Abrégé

A transformer core and methods to form the transformer core are provided. At least one lamination layer of the plurality of lamination layers of the transformer core includes a first side limb component, a second side limb component, an upper yoke component including one or more upper yoke segments, a lower yoke component including one or more lower yoke segments, and an intermediate limb component including a first intermediate limb segment and a second intermediate limb segment. The upper yoke component is disposed in between an upper end of the first and second side limb component, the lower yoke component is disposed in between a lower end of the first and second side limb component, and a first end and a second end of the intermediate limb component is disposed in between two consecutive upper yoke segments and two consecutive lower yoke segments, respectively, where at least one of the upper yoke segment and the lower yoke segment is trapezoidal in structure.

Classes IPC  ?

• H01F 3/02 - Noyaux, culasses ou induits en feuilles
• H01F 27/245 - Noyaux magnétiques fabriqués à partir de tôles, p.ex. à grains orientés
• H01F 27/26 - Fixation des parties du noyau entre elles; Fixation ou montage du noyau dans l'enveloppe ou sur un support
• H01F 41/02 - Appareils ou procédés spécialement adaptés à la fabrication ou à l'assemblage des aimants, des inductances ou des transformateurs; Appareils ou procédés spécialement adaptés à la fabrication des matériaux caractérisés par leurs propriétés magnétiques pour la fabrication de noyaux, bobines ou aimants

Abrégé

A power supporting arrangement (10) for a power grid (24) and comprising a DC network (16) comprising a first DC line (DCL1) with a first DC potential, a second DC line (DCL2) with a second DC potential and an energy storage system comprising a first energy storage unit (18) between the first and the second DC lines, a first group of wye-connected phase arms (12) between the power grid and the first DC line (DCL1), a second group of wye-connected phase arms (14) between the power grid (22) and the second DC line (DCL2), where the first and second groups of phase arms are controllable as a voltage source converter for supportingthe power grid with active power from the energy storage system, and a third group of phase arms (24) connected to the power grid in a wye-configuration, having a neutral point and being controllable to support the power grid with reactive power.

Classes IPC  ?

• H02J 3/18 - Dispositions pour réglage, élimination ou compensation de puissance réactive dans les réseaux
• H02M 1/42 - Circuits ou dispositions pour corriger ou ajuster le facteur de puissance dans les convertisseurs ou les onduleurs
• H02M 5/458 - Transformation d'une puissance d'entrée en courant alternatif en une puissance de sortie en courant alternatif, p.ex. pour changement de la tension, pour changement de la fréquence, pour changement du nombre de phases avec transformation intermédiaire en courant continu par convertisseurs statiques utilisant des tubes à décharge ou des dispositifs à semi-conducteurs pour transformer le courant continu intermédiaire en courant alternatif utilisant des dispositifs du type triode ou transistor exigeant l'application continue d'un signal de commande utilisant uniquement des dispositifs à semi-conducteurs

Abrégé

A hybrid transformer core (10) comprises columns (21-23) of grain-oriented steel and yokes (11, 12). A yoke (11, 12) comprises a plurality of second plies comprising sheets of amorphous steel adhered to each other by an adhesive coating on an outer peripheral area of major faces of the sheets of amorphous steel.

Classes IPC  ?

• H01F 41/02 - Appareils ou procédés spécialement adaptés à la fabrication ou à l'assemblage des aimants, des inductances ou des transformateurs; Appareils ou procédés spécialement adaptés à la fabrication des matériaux caractérisés par leurs propriétés magnétiques pour la fabrication de noyaux, bobines ou aimants
• H01F 3/10 - Dispositions composites de circuits magnétiques
• H01F 27/245 - Noyaux magnétiques fabriqués à partir de tôles, p.ex. à grains orientés

Abrégé

There is provided a hybrid wireless-optical power electronics system (PES). The PES comprises a set of N power electronics components (PECs). The PES further comprises a set of Q first wireless transceiver units. The PECs are operatively connected to the first wireless transceiver units over a first fiber optical communication network. The first wireless transceiver units are configured to communicate with a controller of the PES over a wireless communication network for facilitating communication of signals between the controller and the PECs.

Classes IPC  ?

• H02J 13/00 - Circuits pour pourvoir à l'indication à distance des conditions d'un réseau, p.ex. un enregistrement instantané des conditions d'ouverture ou de fermeture de chaque sectionneur du réseau; Circuits pour pourvoir à la commande à distance des moyens de commutation dans un réseau de distribution d'énergie, p.ex. mise en ou hors circuit de consommateurs de courant par l'utilisation de signaux d'impulsion codés transmis par le réseau
• H02J 3/36 - Dispositions pour le transfert de puissance électrique entre réseaux à courant alternatif par l'intermédiaire de haute tension à courant continu
• H02M 1/092 - Circuits spécialement adaptés à la production d'une tension de commande pour les dispositifs à semi-conducteurs incorporés dans des convertisseurs statiques pour la commande simultanée de dispositifs à semi-conducteurs connectés en série ou en parallèle les signaux de commande étant transmis optiquement

Abrégé

An apparatus (100) for operating an electric switching device is provided. The apparatus (100) comprises: a main shaft (7) configured to be rotated to a plurality of predetermined positions to change a state of the electric switching device; a motor (5) configured to rotate the main shaft (7) via a transmission mechanism when the apparatus (100) operates in an electric operating mode; a braking mechanism (6) configured to brake the motor (5) in response to the main shaft (7) being rotated to each of the plurality of predetermined positions when the apparatus (100) operates in the electric operating mode; a disc (8) coupled to the main shaft (7) and being rotatable along with the main shaft (7), the disc (8) comprising a plurality of blocking parts (82) and a plurality of slots (83) between the plurality of blocking parts (82); and a manual lever (9) comprising a rotatable part (90) and a projecting part (91) arranged at an end of the rotatable part (90), wherein in a manual operating mode of the apparatus (100), the projecting part (91) is configured to be able to be rotated into the disc (8) via one of the plurality of slots (83) when the main shaft (7) is located at one of the plurality of predetermined positions, and be able to slide out from the disc (8) via another one of the plurality of slots (83) when the main shaft (7) is rotated to another one of the plurality of predetermined positions.

Classes IPC  ?

• H01H 3/32 - Mécanismes-moteurs, c. à d. pour transmettre la force motrice aux contacts
• H01H 3/40 - Mécanismes-moteurs, c. à d. pour transmettre la force motrice aux contacts utilisant la friction ou des appareillages dentés ou à vis écrou

Abrégé

A wireless data transmission system (30) for transmitting measurement data of a power utility (20) is adapted such that the measurement data is transmitted in a first operating mode and wireless transmission of the measurement data is paused in a second operating mode. The wireless data transmission system (30) operates in the first or second operating mode as a function of temperature.

Classes IPC  ?

• H02J 13/00 - Circuits pour pourvoir à l'indication à distance des conditions d'un réseau, p.ex. un enregistrement instantané des conditions d'ouverture ou de fermeture de chaque sectionneur du réseau; Circuits pour pourvoir à la commande à distance des moyens de commutation dans un réseau de distribution d'énergie, p.ex. mise en ou hors circuit de consommateurs de courant par l'utilisation de signaux d'impulsion codés transmis par le réseau

Abrégé

The invention relates to a shaft system for transmitting a torque. The shaft system comprises a first component configured to deliver torque from a drive shaft, a first shaft connectable to the first component, and a second shaft connectable to, and axial extendable relative to, the first shaft. The first shaft comprises a toothed structure configured to mate with a toothed structure of the first component in a first coupling, and to mate with a toothed structure of the second shaft in a second coupling, such that in operation of the shaft system, torque is transferred from the first component to the second shaft via the first shaft.

Classes IPC  ?

• F16D 1/108 - Accouplements à action rapide dans lesquels les pièces sont simplement présentées dans l'axe dont les moyens de retenue tournent avec l'accouplement et agissent par parties s'engageant l'une dans l'autre, c.à d. accouplement positif

Abrégé

There is provided mechanisms for communication with PCUs in a HVDC transmission system. A method is performed by a VCU. The method comprises wirelessly communicating, over a first communication channel, firing pulses and indication pulses with the PCUs. The indication pulses are communicated as unmodulated symbols over the first communication channel. The method comprises wirelessly communicating, over a second communication channel, keep-alive messages with the PCUs. The second communication channel is separated from the first communication channel.

Classes IPC  ?

• H02M 1/088 - Circuits spécialement adaptés à la production d'une tension de commande pour les dispositifs à semi-conducteurs incorporés dans des convertisseurs statiques pour la commande simultanée de dispositifs à semi-conducteurs connectés en série ou en parallèle

Abrégé

There is provided mechanisms for controlling MMCs in a HVDC transmission system. A method is performed by a VCU of the MMCs. The method comprises wirelessly receiving, during a current update period, voltage measurements of a previous update period from PCUs of the MMCs. The current update period subsequently follows the previous update period. The method comprises determining a switching command for the PCUs for a next update period based on the voltage measurements of the previous update period. The next update period subsequently follows the current update period. The method comprises controlling the MMCs by, during the next update period, wirelessly transmitting the switching command to the PCUs.

Classes IPC  ?

• H02M 7/49 - Combinaison des formes de tension de sortie d'une pluralité de convertisseurs
• H02M 1/08 - Circuits spécialement adaptés à la production d'une tension de commande pour les dispositifs à semi-conducteurs incorporés dans des convertisseurs statiques
• H02M 7/483 - Convertisseurs munis de sorties pouvant chacune avoir plus de deux niveaux de tension
• H02M 1/00 - APPAREILS POUR LA TRANSFORMATION DE COURANT ALTERNATIF EN COURANT ALTERNATIF, DE COURANT ALTERNATIF EN COURANT CONTINU OU VICE VERSA OU DE COURANT CONTINU EN COURANT CONTINU ET EMPLOYÉS AVEC LES RÉSEAUX DE DISTRIBUTION D'ÉNERGIE OU DES SYSTÈMES D'ALI; TRANSFORMATION D'UNE PUISSANCE D'ENTRÉE EN COURANT CONTINU OU COURANT ALTERNATIF EN UNE PUISSANCE DE SORTIE DE CHOC; LEUR COMMANDE OU RÉGULATION - Détails d'appareils pour transformation

Abrégé

A socket, connectable to a plug-in device, wherein the plug-in device is a bushing and/or a plug-in cable termination, is described. The socket includes a current conduction path and a field control unit. The field control unit includes a layer arrangement with at least three conductive layers arranged around the current conduction path and separated by an insulating material

Classes IPC  ?

• H01R 13/53 - Socles ou boîtiers pour dures conditions de service; Socles ou boîtiers avec des moyens pour éviter l'effet couronne ou l'amorçage d'un arc
• H02G 15/072 - Boîtes, châssis ou autres structures terminales avec des moyens pour atténuer la contrainte électrique du type condensateur
• H01R 13/523 - Boîtiers protégés contre la poussière, les projections, les éclaboussures, l'eau ou les flammes pour l'emploi sous l'eau

Abrégé

Embodiments of the present disclosure relate to nominal contact finger and circuit breaker. A nominal contact finger for use in a circuit breaker includes a contact finger spring made by a conductive wire.

Classes IPC  ?

• H01H 1/38 - Contacts à fiche et prise
• H01H 1/025 - Matériau composite avec du cuivre comme matériau de base
• H01H 33/12 - Contacts auxiliaires sur lesquels l'arc est transféré des contacts principaux

Abrégé

An electromagnetic device comprises an enclosure (12), at least one winding (16, 18) in the interior of the enclosure, at least one wireless sensor (26A, 26B, 26C, 26D) attached to the winding for sensing at least one property or deficiency of the electromagnetic device and at least one active communication unit (14A, 14B) comprising transceiving circuitry and at least one antenna, wherein the transceiving circuitry is placed on the exterior of the enclosure (12) and the least one antenna is placed inside the enclosure (12) for communication with the at least one sensor (26A, 26B, 28A), wherein the at least one sensor comprises at least one sensor attached to the winding, and wherein the at least one sensor (26A) attached to the winding is a printed electronic sensor comprising electronics (PE) printed on an insulating substrate (S), where the substrate faces the at least one winding (18).

Classes IPC  ?

• H01F 27/40 - Association structurelle de composants électriques incorporés, p.ex. fusibles
• H01F 27/02 - Enveloppes
• G08C 17/02 - Dispositions pour transmettre des signaux caractérisées par l'utilisation d'une voie électrique sans fil utilisant une voie radio

Abrégé

A transformer comprises a tank (20) having tank walls (21, 22, 25). The tank walls (21, 22, 25) comprise composite panels (40) having a core (41). The tank (20) has a fluid-tight insert (30).

Classes IPC  ?

• H01F 27/02 - Enveloppes
• H01F 27/12 - Refroidissement par huile
• B32B 3/12 - Produits stratifiés caractérisés essentiellement par le fait qu'une des couches comporte des discontinuités ou des rugosités externes ou internes, ou bien qu'une des couches est de forme générale non plane; Produits stratifiés caractérisés essentiellement par des particularismes de forme caractérisés par une couche discontinue, c. à d. soit continue et percée de trous, soit réellement constituée d'éléments individuels caractérisés par une couche d'alvéoles disposées régulièrement, soit formant corps unique dans un tout, soit structurées individuellement ou par assemblage de bandes indépendantes, p.ex. structures en nids d'abeilles
• B32B 3/02 - Caractérisés par des caractéristiques de forme en des endroits déterminés, p.ex. au voisinage des bords
• B32B 3/06 - Caractérisés par des caractéristiques de forme en des endroits déterminés, p.ex. au voisinage des bords pour attacher le produit à quelque chose d'autre p.ex. à un support
• B65D 90/02 - Structure des parois

Abrégé

Techniques for assessing a health of a transformer breather (40) are provided. The transformer breather (40) contains a desiccant and is in fluid communication with an expansion tank (30) of a fluid-insulated transformer (20). A weight measurement that is dependent on a weight of the transformer breather (40) or of a component or sub-assembly thereof is processed to assess the health of the transformer breather (40).

Classes IPC  ?

• H01F 27/14 - Chambres d'expansion; Conservateurs d'huile; Matelas de gaz; Dispositions pour la purification, le séchage ou le remplissage
• H01F 27/40 - Association structurelle de composants électriques incorporés, p.ex. fusibles

Abrégé

A system and method for forming electrical devices via additive manufacturing processes that utilize starting materials that are in a solid state at least prior to, as well as after, the formation of the electrical device. A first solid starting material can be configured to form one or more insulator layers of the electrical device, while another solid starting material can be applied to form one or more electrically conductive layers. The starting materials can be applied layer-by-layer during formation of the electrical device such that the electrically conductive layers can become automatically embedded within the insulating layers, and vice versa. The additive manufacturing process(es) utilized to form the electrically conductive layers from solid starting materials can be different than the additive manufacturing process(es) utilized to form the insulator layers.

Classes IPC  ?

• B23K 1/005 - Brasage par énergie rayonnante
• B29C 64/118 - Procédés de fabrication additive n’utilisant que des matériaux liquides ou visqueux, p.ex. dépôt d’un cordon continu de matériau visqueux utilisant un matériau filamentaire mis en fusion, p.ex. modélisation par dépôt de fil en fusion [FDM]
• B29C 64/209 - Têtes; Buses

Abrégé

Embodiments of present disclosure relate to a capacitor assembly and a dry-type capacitor. The capacitor assembly comprises: a first layer of capacitor elements; a second layer of capacitor elements, wherein the first layer of capacitor elements is stacked on the second layer of capacitor elements; a first busbar comprising a first conductive plate provided with a plurality of holes, wherein the first conductive plate is electrically coupled to the capacitor elements of the first layer via a plurality of connecting elements arranged at the respective holes of the first conductive plate; and a second busbar electrically coupled to the first busbar and comprising a second conductive plate provided with a plurality of holes, wherein the second conductive plate is electrically coupled to the capacitor elements of the second layer via a plurality of connecting elements arranged at the respective holes of the second conductive plate, and wherein the first and second conductive plates are arranged between the first layer of capacitor elements and the second layer of capacitor elements.

Classes IPC  ?

• H01G 4/38 - Condensateurs multiples, c. à d. combinaisons structurales de condensateurs fixes

Abrégé

A heat exchanger (12) comprising a primary side (20); a secondary side (22); at least one primary structure (26, 42, 50) on the primary side (20) defining at least one primary space (34, 46) on the primary side (20); and at least one secondary structure (28, 44, 50) on the secondary side (22) defining at least one secondary space (36, 48) on the secondary side (22); wherein one or more of the at least one primary structure (26, 42, 50) and one or more of the at least one secondary structure (28, 44, 50) delimit a coolant volume (38) separated from the at least one primary space (34, 46) and separated from the at least one secondary space (36, 48); wherein one or more of the at least one primary structure (26, 42) and/or one or more of the at least one secondary structure (28, 44) comprises a three dimensional lattice body; and wherein the heat exchanger further comprises a separation structure (32), and wherein the separation structure (32) is configured to allow coolant to flow between the primary side (20) and the secondary side (22).

Classes IPC  ?

• H01F 27/12 - Refroidissement par huile
• F28F 7/02 - Blocs traversés par des passages pour sources de potentiel calorifique
• F28D 15/02 - Appareils échangeurs de chaleur dans lesquels l'agent intermédiaire de transfert de chaleur en tubes fermés passe dans ou à travers les parois des canalisations dans lesquels l'agent se condense et s'évapore, p.ex. tubes caloporteurs
• F28D 15/04 - Appareils échangeurs de chaleur dans lesquels l'agent intermédiaire de transfert de chaleur en tubes fermés passe dans ou à travers les parois des canalisations dans lesquels l'agent se condense et s'évapore, p.ex. tubes caloporteurs avec des tubes ayant une structure capillaire

Abrégé

Embodiments of the disclosure includes operating a power grid, including: generating, by a power management system of the power grid, a power grid resource allocation profile indicative of an operation of the power grid constrained by operational information of the power grid; generating a difference between a value of upper bounds from a plurality of obtained convergence paths and a value of lower bounds from the obtained convergence paths, the obtained convergence paths being based on a plurality of different initial conditions for the generated power grid resource allocation profile; and generating a resource allocation schedule for power grid resources operating within the power grid if the generated difference is smaller than a pre-determined threshold, the resource allocation schedule corresponding to a convergence path associated with the value of the upper bounds, the resource allocation schedule being configured to be received at the power grid resources.

Classes IPC  ?

• H02J 3/38 - Dispositions pour l’alimentation en parallèle d’un seul réseau, par plusieurs générateurs, convertisseurs ou transformateurs
• H02J 3/46 - Dispositions pour l’alimentation en parallèle d’un seul réseau, par plusieurs générateurs, convertisseurs ou transformateurs contrôlant la répartition de puissance entre les générateurs, convertisseurs ou transformateurs
• H02J 3/28 - Dispositions pour l'équilibrage de charge dans un réseau par emmagasinage d'énergie

Abrégé

An electric arrangement (10) comprising a casing (14); a heat generating electric component (18) arranged inside the casing (14); and a heat exchanger (12) comprising a three dimensional lattice cell structure (22), the three dimensional lattice cell structure (22) being arranged to conduct a dielectric cooling fluid (16) from the casing (14) at an exterior side of the casing (14) for heat exchange with an ambient fluid (20), and back towards the casing (14) for cooling of the electric component (18). A panel (60) for a heat exchanger (12) and a heat exchanger (12) comprising a plurality of panels (60) are also provided.

Classes IPC  ?

• F28F 7/02 - Blocs traversés par des passages pour sources de potentiel calorifique

Abrégé

A control device (20) for a voltage source converter (15) of a power supporting arrangement (10), where the voltage source converter (15) operates as a virtual synchronous machine. The control device (20) obtains a measured power level of the converter (15), processes the obtained power level using a differential equation of the angular velocity of the virtual synchronous machine in order to obtain a control contribution, provides the phase angle of a physical quantity used to control the converter (15) based on the control contribution, monitors the ability of the converter (15) to act as a virtual synchronous machine, and adjusts the control contribution based on the monitored ability.

Classes IPC  ?

• H02J 3/24 - Dispositions pour empêcher ou réduire les oscillations de puissance dans les réseaux
• H02J 3/18 - Dispositions pour réglage, élimination ou compensation de puissance réactive dans les réseaux

Abrégé

A component for manufacturing an insulating spacer for electromagnetic induction apparatuses. Said component is formed by a body of plastic material having opposite first and second surfaces, opposite first and second sides and opposite third and fourth sides, a first distance between said first and second surfaces. At least one of said first and second sides comprises coupling means for coupling with complementary coupling means of a further one of such component for manufacturing said insulating spacer.

Classes IPC  ?

• H01F 27/32 - Isolation des bobines, des enroulements, ou de leurs éléments

Abrégé

The present application relates to a grid forming vector current control system for controlling a grid intertie, the system comprising a first terminal configured to be connected to a first power grid, the first terminal comprising a first current control unit, a first virtual admittance unit, and a first phase locked loop, PLL, unit, a second terminal configured to be connected to a second power grid, the second terminal comprising a second current control unit, a second virtual admittance unit, and a second PLL unit and a controller being configured to use the transient power consumed by a first virtual synchronous machine to generate a power-equivalent current reference to control a second virtual current source and to use the transient power consumed by a second virtual synchronous machine to generate a power-equivalent current reference to control a first virtual current source. The application also relates to a respective method.

Classes IPC  ?

• H02J 3/38 - Dispositions pour l’alimentation en parallèle d’un seul réseau, par plusieurs générateurs, convertisseurs ou transformateurs
• H02J 3/28 - Dispositions pour l'équilibrage de charge dans un réseau par emmagasinage d'énergie

Abrégé

The present subject matter describes fault detection during power swing in a power transmission system. Voltage and current measurements are obtained for each phase at a terminal of the power transmission system. Based on measurements obtained, a value of change in an impedance angle for each phase-to-ground loop and each phase-to-phase loop for each sampled value of voltage and current is calculated, where the value of change in the impedance angle is a difference between impedance angles of two samples separated by a predetermined interval. Further, the average values for change in impedance angle based on a predetermined number of values of the change in the impedance angle for each phase-to-ground loop and each phase-to-phase loop is calculated. The average values calculated are compared with a threshold of change in impedance angle and based on the comparison a fault in one or more of the phase-to-ground loops or phase-to-phase loops is detected and classified.

Classes IPC  ?

• H02H 1/04 - Dispositions pour prévenir la réponse à des conditions transitoires anormales, p.ex. à la foudre
• G01R 31/08 - Localisation de défauts dans les câbles, les lignes de transmission ou les réseaux
• H02H 3/38 - Circuits de protection de sécurité pour déconnexion automatique due directement à un changement indésirable des conditions électriques normales de travail avec ou sans reconnexion sensibles à l'angle de déphasage entre tension et courant
• H02H 3/40 - Circuits de protection de sécurité pour déconnexion automatique due directement à un changement indésirable des conditions électriques normales de travail avec ou sans reconnexion sensibles au rapport de la tension et du courant

Abrégé

LTLH11×T223123LT11×T2231233 = 110 [mm]. The leg plate top portion (20T) is arranged in a mating reception (18) of the top clamp structure (16). Further, leg plate (20) for a transformer (10) and a lifting structure (30) for a transformer (10) is described.

Classes IPC  ?

• H01F 27/26 - Fixation des parties du noyau entre elles; Fixation ou montage du noyau dans l'enveloppe ou sur un support
• H01F 27/00 - AIMANTS; INDUCTANCES; TRANSFORMATEURS; EMPLOI DE MATÉRIAUX SPÉCIFIÉS POUR LEURS PROPRIÉTÉS MAGNÉTIQUES - Détails de transformateurs ou d'inductances, en général
• H01F 30/12 - Transformateurs diphasés, triphasés ou polyphasés

Abrégé

The present invention relates to a voltage link arrangement (100) connectable between power distribution grids (102, 104), the voltage link arrangement comprising: a medium-voltage direct current (MVDC) link (106) connectable to a first power distribution grid (102) and a second power distribution grid (104), and a breaker (108) arranged in parallel with the MVDC-link and connectable to the first power distribution grid and the second power distribution grid, wherein the voltage link arrangement is operable in at least: a first mode where the breaker is closed, a second mode where the MVDC-link is closed and the breaker is open, and a third mode where the breaker and the MVDC-link are open, wherein the voltage link arrangement is responsive to switch between modes based on operation information indicating operation status of at least one of the first power distribution grid and the second power distribution grid.

Classes IPC  ?

• H02J 3/06 - Commande du transfert de puissance entre réseaux connectés; Commande du partage de charge entre réseaux connectés
• H02J 3/36 - Dispositions pour le transfert de puissance électrique entre réseaux à courant alternatif par l'intermédiaire de haute tension à courant continu

Abrégé

A rupture reduction system for fluid-immersed electrical equipment includes a turret for mounting of a bushing. The turret is expandable in volume in response to a surge in pressure of the fluid in the turret. The expansion volume can be provided by an expandable section of the turret, which may include a bellows.

Classes IPC  ?

• H01F 27/04 - Passages de conducteurs ou d'axes à travers les enveloppes, p.ex. pour dispositifs de changement de prise
• H01F 27/14 - Chambres d'expansion; Conservateurs d'huile; Matelas de gaz; Dispositions pour la purification, le séchage ou le remplissage
• F16J 3/04 - Soufflets

Abrégé

A method of estimating future aging of a transformer includes generating probabilistic models of factors that affect effective aging of the transformer, generating probabilistic profiles of the factors that affect effective aging of the transformer based on the probabilistic models, generating expected hot spot profiles from the probabilistic profiles, simulating a plurality of aging scenarios of the transformer based on the expected hot spot profiles and ambient temperature profiles, and estimating future aging of the transformer from the plurality of aging scenarios.

Classes IPC  ?

• G01R 31/62 - Test de transformateurs

Abrégé

An apparatus (20) for driving a body of a HV switch. The apparatus (20) comprises a pin (22), a mechanism (40) assembly comprising a first bar (42), a cam (24) comprising a cam groove (241); a motor (26) adapted to cause the pin (22) to move from a first position to a second position in a first direction. The pin (22) is adapted to move in a first groove (421) of the first bar (42) to cause the first bar (42) to rotate to generate a first signal, the first signal indicating a first status of the HV switch; and enter the cam groove (241) from the first groove (421) at a first driving position between the first and second positions to cause a moving contact of the body of the HV switch to move. It may achieve improved approach to indicate the opening and closing positions until the moving contact of the body of the HV switch has physically reached the final opening and closing position.

Classes IPC  ?

• H01H 33/42 - Mécanismes moteurs
• H01H 71/04 - Moyens pour indiquer l'état du dispositif de commutation

Abrégé

The present disclosure relates to a transformer system (10) comprising a power transformer (1) comprising a metal tank (2) filled with an electrically insulating liquid (3), and a wireless sensor arrangement (11) submerged in the insulating liquid within the tank. The sensor arrangement comprises a radio transmitter (12) for wirelessly transmitting sensor readings to the outside of the transformer through an opening (4a and/or 4b) in the tank, said opening being provided with a liquid-tight seal comprising a solid insulator for preventing leakage from the tank of the insulating liquid and wherein the radio transmitter (12) is configured for transmitting the sensor readings using a carrier frequency within the range of from 100 kHz to 1 MHz.

Classes IPC  ?

• H01F 27/40 - Association structurelle de composants électriques incorporés, p.ex. fusibles
• G08C 17/02 - Dispositions pour transmettre des signaux caractérisées par l'utilisation d'une voie électrique sans fil utilisant une voie radio

Abrégé

A power supporting arrangement (10) for a power grid (24) comprises a first and a second voltage source converter (14, 8) with an AC side and a DC side, a DC link (16) interconnecting the DC sides of the voltage source converters (14, 18), a first switching arrangement (20) with a number of settable positions and a first synchronous machine (12). The AC side of the second voltage source converter (18) is connected to the power grid (24) and the first switching arrangement (20) is connected between the first synchronous machine (12), the AC side of the first voltage source converter (14) and the power grid (24) and operable to selectively connect the first synchronous machine (12) to the power grid (24) or to the AC side of the first voltage source converter (14).

Classes IPC  ?

• H02J 3/40 - Synchronisation d'un générateur pour sa connexion à un réseau ou à un autre générateur
• H02J 3/18 - Dispositions pour réglage, élimination ou compensation de puissance réactive dans les réseaux
• H02M 5/44 - Transformation d'une puissance d'entrée en courant alternatif en une puissance de sortie en courant alternatif, p.ex. pour changement de la tension, pour changement de la fréquence, pour changement du nombre de phases avec transformation intermédiaire en courant continu par convertisseurs statiques utilisant des tubes à décharge ou des dispositifs à semi-conducteurs pour transformer le courant continu intermédiaire en courant alternatif

Abrégé

Embodiments of present disclosure relates to an electric device. The electric device comprises a first voltage sensor, a second voltage sensor, a current sensor, an actuator and 5 a controller. The first voltage sensor is configured to sense a first voltage at a first contact of a switch inside the electric device and to generate a first voltage signal indicating the first voltage, the first contact of the switch coupled to a source line. The second voltage sensor configured to sense a second voltage at a second contact of the switch and to generate a second voltage signal indicating the second voltage. The second contact of the switch is coupled to a reactive component. The current sensor is configured to sense a current at the second contact of the switch and to generate a current or voltage output signal indicating the current. The controller is coupled to the first and second voltage sensors, the current sensor and the actuator. The controller is configured to cause, based on at least one of the first and second voltage signals and the current signal, the actuator to actuate one of the first 15 and second contacts to execute switching at a predetermined point of the first voltage. By utilizing embodiments herein, the switching can be controlled at a desired point of wave of the voltage to reduce transients.

Classes IPC  ?

• H01H 9/16 - Indicateurs de position, p.ex. "marche" ou "arrêt"
• H01H 9/56 - Circuits non adaptés à une application particulière du dispositif de commutation non prévus ailleurs pour assurer le fonctionnement de l'interrupteur en un point déterminé de la période du courant alternatif
• H01H 33/59 - Circuits non adaptés à une application particulière de l'interrupteur et non prévus ailleurs, p.ex. pour assurer le fonctionnement de l'interrupteur en un point déterminé de la période du courant alternatif
• H01H 33/02 - Interrupteurs pour haute tension ou courant fort comportant des moyens d'extinction ou de prévention des arcs - Détails
• H02J 3/18 - Dispositions pour réglage, élimination ou compensation de puissance réactive dans les réseaux

Abrégé

A power module device (100) is provided, which comprises in an order from a first main side (102) to a second main side (104): a base plate (110); an electrically insulating ceramic layer (120) on the base plate (110); an electrically insulating first insulating layer (130) on the ceramic layer (120), wherein the first insulating layer (130) comprises prepreg material and has a layer thickness (d4) of less than 100 µm; an electrically conductive lead frame (140) on the first insulating layer (130), wherein the lead frame (140) is electrically insulated from the base plate (110); a power semiconductor device (150) on the lead frame (140); and an electrically insulating second insulating layer (160) on the power semiconductor device (150) so that the power semiconductor device (150) is embedded between the lead frame (140) and the second insulating layer (160).

Classes IPC  ?

• H01L 23/14 - Supports, p.ex. substrats isolants non amovibles caractérisés par le matériau ou par ses propriétés électriques
• H01L 23/538 - Dispositions pour conduire le courant électrique à l'intérieur du dispositif pendant son fonctionnement, d'un composant à un autre la structure d'interconnexion entre une pluralité de puces semi-conductrices se trouvant au-dessus ou à l'intérieur de substrats isolants
• H01L 23/373 - Refroidissement facilité par l'emploi de matériaux particuliers pour le dispositif

Abrégé

A power semiconductor device (100) is provided which comprises a thyristor structure (50) and a bipolar junction transistor (60) integrated in the same semiconductor wafer (110). The thyristor structure (50) comprises a gate electrode (161), a first main electrode (162) arranged on a first main side (111) of the semiconductor wafer (110) and a second main electrode (163) arranged on a second main side (112) of the semiconductor wafer (110). The bipolar junction transistor (60) comprises a base electrode (171) electrically separated from the gate electrode (161), a third main electrode (172) arranged on the first main side (111) and a fourth main electrode (173) arranged on the second main side (112). The base electrode (171) corresponds to a base terminal of the bipolar junction transistor (60). The third main electrode (172) corresponds to one of a collector terminal and an emitter terminal of the bipolar junction transistor (60), and the fourth main electrode (173) corresponds to the other one of the collector terminal and the emitter terminal of the bipolar junction transistor (60). The first main electrode (162) is electrically connected to the third main electrode (172), and the second main electrode (163) is electrically connected to the fourth main electrode (173).

Classes IPC  ?

• H01L 29/06 - Corps semi-conducteurs caractérisés par les formes, les dimensions relatives, ou les dispositions des régions semi-conductrices
• H01L 29/74 - Dispositifs du type thyristor, p.ex. avec un fonctionnement par régénération à quatre zones
• H01L 27/07 - Dispositifs consistant en une pluralité de composants semi-conducteurs ou d'autres composants à l'état solide formés dans ou sur un substrat commun comprenant des éléments de circuit passif intégrés avec au moins une barrière de potentiel ou une barrière de surface le substrat étant un corps semi-conducteur comprenant une pluralité de composants individuels dans une configuration non répétitive les composants ayant une région active en commun
• H01L 29/732 - Transistors verticaux

Abrégé

The invention relates to an electrical interconnection circuit, for a solid-state-transformer (SST) system (1). The interconnection circuit comprises a plurality of medium voltage direct current, MVDC, to low voltage direct current, LVDC, direct current to direct current, DC/DC, converters (3a, 3b); at least two independent low voltage direct current, LVDC, buses (6); and at least one interconnecting DC/DC converter (5) connecting the at least two independent LVDC buses (6). The invention also relates to a solid-state-transformer (SST) system for transforming medium voltage alternating current (MVAC) to low voltage direct current (LVDC).

Classes IPC  ?

• H02J 1/08 - Systèmes à trois fils; Systèmes ayant plus de trois fils
• H02J 1/10 - Fonctionnement de sources à courant continu en parallèle
• H02J 1/12 - Fonctionnement de générateurs à courant continu en parallèle avec des convertisseurs, p.ex. avec un redresseur à arc de mercure
• H02J 7/02 - Circuits pour la charge ou la dépolarisation des batteries ou pour alimenter des charges par des batteries pour la charge des batteries par réseaux à courant alternatif au moyen de convertisseurs

Abrégé

Exemplary of embodiments of the disclosure include a method which includes determining, by a first device, whether the first device has a current time and transmitting a request for the current time to a second device if the first device does not have the current time. The second device is in a local network. The method further includes receiving, by the first device, the current time from the second device, authenticating a certificate based on the current time received from the second device, and establishing a network connection to the local network based on the authenticated certificate.

Classes IPC  ?

• H04W 12/069 - Authentification utilisant des certificats ou des clés pré-partagées
• H04W 12/61 - Sécurité dépendant du contexte dépendant du temps
• H04W 56/00 - Dispositions de synchronisation
• H04L 29/06 - Commande de la communication; Traitement de la communication caractérisés par un protocole

Abrégé

An apparatus includes a connector port configured to be selectably connected with and disconnected from a peripheral device. A detector is configured to provide an output indicating the connection of the peripheral device with the connector port with a time delay between connection of the peripheral device with the connector port and outputting the signal. A data switch is operatively coupled with the detector and a communication pin of the connector port and to selectably enable and disable data communication between the communication pin and a computer board in response to the output of the detector. A power switch is operatively coupled with the detector, the power supply pin, and a DC power supply and is configured to selectably connect and disconnect the power supply and the power supply pin in response to the output of the detector.

Classes IPC  ?

• G06F 13/38 - Transfert d'informations, p.ex. sur un bus

Abrégé

An insulated gate structure is provided, which comprises a wide bandgap material layer (50) comprising a channel region (53) of a first conductivity type, a gate insulating layer (100a) arranged directly on the channel region (53), the gate insulating layer (100a) comprising a first nitride layer, which is arranged directly on the channel region (53); and an electrically conductive gate electrode layer (200) on the gate insulating layer (100a), so that the gate electrode layer (100a) is separated from the wide bandgap material layer (50) by the gate insulating layer (100a). A concentration of carbon atoms in the gate insulating layer (100a) is less than 1018 atoms/cm-3 at a distance of 3 nm from an interface (151) between the silicon carbide layer (50) and the first nitride layer. The first nitride layer (102) comprises a stochiometric silicon nitride layer, an aluminum nitride layer, a boron nitride layer or a phosphorous nitride layer.

Classes IPC  ?

• H01L 21/28 - Fabrication des électrodes sur les corps semi-conducteurs par emploi de procédés ou d'appareils non couverts par les groupes
• H01L 21/441 - Dépôt de matériaux conducteurs ou isolants pour les électrodes
• H01L 29/51 - Matériaux isolants associés à ces électrodes
• H01L 29/16 - Corps semi-conducteurs caractérisés par les matériaux dont ils sont constitués comprenant, mis à part les matériaux de dopage ou autres impuretés, seulement des éléments du groupe IV de la classification périodique, sous forme non combinée
• H01L 29/20 - Corps semi-conducteurs caractérisés par les matériaux dont ils sont constitués comprenant, à part les matériaux de dopage ou autres impuretés, uniquement des composés AIIIBV
• H01L 29/24 - Corps semi-conducteurs caractérisés par les matériaux dont ils sont constitués comprenant, à part les matériaux de dopage ou autres impuretés, uniquement des matériaux semi-conducteurs inorganiques non couverts par les groupes , ,  ou

Abrégé

A semiconductor device comprises in an order from a first main side (21) to a second main side (22): a first semiconductor layer (3) of a first conductivity type, a third semiconductor layer (41) of a second conductivity type forming a pn junction (5) with the first semiconductor layer (3), a fifth semiconductor layer (43) of the second conductivity type, and a fourth semiconductor layer (42) of the second conductivity type, wherein a maximal doping concentration of the fifth semiconductor layer (43) is lower than a maximal doping concentration of the fourth semiconductor layer (42) and higher than a maximal doping concentration of the third semiconductor layer (41), and wherein a first and a second semiconductor region (51, 52) of the first conductivity type are completely embedded in the fifth semiconductor layer (43). During reverse recovery, a first conductivity type charge carrier injection duration of the first semiconductor region (51) is different from a first conductivity type charge carrier injection duration of the second semiconductor region (52).

Classes IPC  ?

• H01L 29/861 - Diodes
• H01L 29/06 - Corps semi-conducteurs caractérisés par les formes, les dimensions relatives, ou les dispositions des régions semi-conductrices
• H01L 21/329 - Procédés comportant plusieurs étapes pour la fabrication de dispositifs du type bipolaire, p.ex. diodes, transistors, thyristors les dispositifs comportant une ou deux électrodes, p.ex. diodes
• H01L 29/36 - Corps semi-conducteurs caractérisés par la concentration ou la distribution des impuretés

Abrégé

The present disclosure relates to an electrical insulator (5), for an inductive device filled with an electrically insulating cooling fluid. The insulator defines a plurality of internal channels (6) for allowing the fluid to flow there through to improve circulation of the fluid within the inductive device.

Classes IPC  ?

• H01F 27/12 - Refroidissement par huile
• H01F 27/30 - Fixation ou serrage de bobines, d'enroulements ou de parties de ceux-ci entre eux; Fixation ou montage des bobines ou enroulements sur le noyau, dans l'enveloppe ou sur un autre support
• H01F 27/32 - Isolation des bobines, des enroulements, ou de leurs éléments

Abrégé

There is provided a pressboard for high-voltage devices, the pressboard having a density of 0.6-1.3 g/cm3 according to IEC60641-2, and comprising 1-15 % microfibrillated cellulose, MFC, based on the total dry weight of the pressboard. There is also provided an insulation element (101) comprising such pressboard, wherein the pressboard is impregnated with an electrically insulating compound (104). There is also provided use of such insulation element in a high-voltage device (100) as well as a high-voltage device comprising such insulation element, wherein the high-voltage device may be a power transformer.

Classes IPC  ?

• H01B 3/52 - Isolateurs ou corps isolants caractérisés par le matériau isolant; Emploi de matériaux spécifiés pour leurs propriétés isolantes ou diélectriques composés principalement de substances organiques matériaux fibreux carton

Abrégé

Provided are a switch (200), a contact protection assembly (100) for a switch (200) and a manufacturing method thereof. The contact protection assembly (100) comprises a protection cover assembly (101) rotatably coupled to a moveable blade (201) of the switch (200), the moveable blade (201) being rotatable about a first shaft (203) of the switch (200) to change an engagement status of contact fingers (2011) of the moveable blade (201) with a fixed contact (202); a second shaft (103) arranged at a distance from the first shaft (203); and an actuation rod (102) coupled between the protection cover assembly (101) and the second shaft (103) and configured to be rotatable about the second shaft (103) with a rotation of the moveable blade (201), wherein the second shaft (103) is arranged parallel to the first shaft (203) to enable the actuation rod (102) to push or pull the protection cover assembly (101) to rotate between a covering position and an exposing position, wherein the protection cover assembly (101) covers the contact fingers (2011) at the covering position and exposes the contact fingers (2011) at the exposing position. With the contact protection assembly (100), foreign objects like ice covering the contact fingers (2011) can be easily removed with the rotation of the protection cover assembly (101). This arrangement makes the switch (200) such as an earthing switch meet requirements of relevant standards, which require that the engagement of contact fingers (2011) with the fixed contact (202) cannot be affected in a case where the contact fingers (2011) are covered by a 20mm ice layer. In this way, the stability of the switch (200) is improved.

Classes IPC  ?

• H01H 31/02 - Interrupteurs à coupure dans l'air pour haute tension sans moyen d'extinction ou de prévention des arcs - Détails
• H01H 31/28 - Interrupteurs à coupure dans l'air pour haute tension sans moyen d'extinction ou de prévention des arcs avec contact mobile demeurant électriquement connecté à une ligne en position d'ouverture de l'interrupteur avec contact à déplacement angulaire
• H01H 1/64 - Enceintes de protection, chicanes ou écrans pour contacts

Abrégé

The present disclosure relates to a protection device (7) configured for being electrically connected to a test tap (9) of a HV bushing for protecting the bushing from transient overvoltages. The protection device comprises at least two parallel connected protection branches (20) connected between the test tap and a ground connector (24) configured for connecting to ground. Each of the protection branches comprises a plurality of parallel connected gas discharge tubes (21), a Transient-Voltage-Suppression (TVS) diode (22) connected in series with the gas discharge tubes, and a resistor (23) connected in series with the gas discharge tubes and across the TVS diode.

Classes IPC  ?

• H02H 9/04 - Circuits de protection de sécurité pour limiter l'excès de courant ou de tension sans déconnexion sensibles à un excès de tension
• H02H 9/06 - Circuits de protection de sécurité pour limiter l'excès de courant ou de tension sans déconnexion sensibles à un excès de tension utilisant des éclateurs à étincelles
• G01R 31/12 - Test de la rigidité diélectrique ou de la tension disruptive

Abrégé

An assembly comprises a first connection terminal (AC1), a second connection terminal (AC2) and at least two circuit arrangements, each circuit arrangement comprising a first series connection of two switches (T1A, T1B; T2A, T2B; T3A, T3B) and a capacitor (CA; CB; CC) having a first end with a first electrical terminal (TEC1A; TEC1B; TEC1C) and a second end with a second electrical terminal (TEC2A; TEC2B; TEC2C); where a first terminal (TES1A; TES1B; TES1C) of the first series connection is connected with the first electrical terminal (TEC1A; TEC1B; TEC1C) and a second terminal (TES2A; TES2B; TES2C) of the first series connection is connected with the second electrical terminal (TEC2A; TEC2B; TEC2C). A parallel branch is electrically connected between the first and second electrical terminals (TEC1A, TEC2A; TEC1B, TEC2B; TEC1C, TEC2C) and comprises a switching element (CBA; CBB; CBC). An impedance (ZAC, ZAB, ZBC) is connected between the electrical terminals (TEC1A, TEC1B, TEC1C) at one end of the capacitors (CA, CB, CC).

Classes IPC  ?

• H02M 1/32 - Moyens pour protéger les convertisseurs autrement que par mise hors circuit automatique
• H02M 7/483 - Convertisseurs munis de sorties pouvant chacune avoir plus de deux niveaux de tension

Abrégé

Examples for protecting a power transmission line in response to a fault occurring within a monitored zone in a power transmission system are described. In an example, an occurrence of the fault in at least one phase of the power transmission line may be identified. Thereafter, an actual rate of change of incremental current is calculated based on calculated incremental currents. With the actual rate of change determined, a threshold for rate of change of incremental current is calculated based on calculated incremental voltages, the calculated incremental currents, line parameters, and a zone setting for the monitored zone. Based on comparison of the actual rate of change and the threshold for the rate of change, the fault is determined to have occurred in the monitored zone. Thereafter, a trip signal may be generated for controlling a switching device associated with the power transmission line.

Classes IPC  ?

• H02H 3/40 - Circuits de protection de sécurité pour déconnexion automatique due directement à un changement indésirable des conditions électriques normales de travail avec ou sans reconnexion sensibles au rapport de la tension et du courant
• H02H 3/44 - Circuits de protection de sécurité pour déconnexion automatique due directement à un changement indésirable des conditions électriques normales de travail avec ou sans reconnexion sensibles aux taux de variation de quantités électriques

Abrégé

An insulation end ring and a transformer. The insulation end ring (100) comprises a ring body (101) adapted to be arranged between two coils (202) helically wound in a layer around a core (203), wherein circumferential edges (1013) of the ring body (101) are in helical shapes and allow the coils (202) to be synchronously wound along a respective one of the circumferential edges (1013) to form helical shapes of the adjacent coils (202). By both of the circumferential edges (1013) of the ring body (101) being in helical shapes, the coils (202) of the split-coil transformer sharing one common core (203) can be synchronously wound along the circumferential edges (1013), respectively. In this way, the efficiency for winding the coils (202) is significantly improved. Furthermore, the spacer plate is no longer needed. As a result, the total height of the split-coil winding is reduced, thereby reducing the weight and the volume of the transformer.

Classes IPC  ?

• H01F 27/28 - Bobines; Enroulements; Connexions conductrices

Abrégé

Embodiments of present disclosure relates to a method for monitoring vacuum interrupter's condition of an electric device. The method comprises receiving a first voltage signal indicating a first voltage at a first contact of a switch inside the electric device. The first contact of the switch is coupled to a source line. The method further comprises receiving a second voltage signal indicating a second voltage at a second contact of the switch. The second contact of the switch is coupled to a reactive component. The method comprises receiving a current signal indicating a current at the second contact of the switch. The method comprises determining occurrence of a restrike in response to determining increasing amplitudes of the first voltage signal, the second voltage signal and the current signal in a time slot. The method further comprises determining the vacuum interrupter condition based on the determined occurrence of the restrike. By utilizing the embodiments herein, vacuum condition can be reliably monitored in a nonintrusive manner without significant cost.

Classes IPC  ?

• H01H 33/668 - Moyens pour obtenir ou surveiller le vide

Abrégé

Disclosed is an integrated gate-commutated thyristor (IGCT) comprising a semiconductor wafer having a first main side and a second main side opposite to the first main side and a plurality of first type thyristor cells and second type thyristor cells. The cathode electrode of the first type thyristor cells forms an ohmic contact with the cathode region and the cathode electrode of the second type thyristor cells is insulated from the cathode region. A predefined percentage of second type thyristor cells of the overall amount of first type thyristor cells and second type thyristor cells in a segment ring is larger than 0% and equal to or less than 75%.

Classes IPC  ?

• H01L 29/06 - Corps semi-conducteurs caractérisés par les formes, les dimensions relatives, ou les dispositions des régions semi-conductrices
• H01L 29/08 - Corps semi-conducteurs caractérisés par les formes, les dimensions relatives, ou les dispositions des régions semi-conductrices avec des régions semi-conductrices connectées à une électrode transportant le courant à redresser, amplifier ou commuter, cette électrode faisant partie d'un dispositif à semi-conducteur qui comporte trois électrodes ou plus
• H01L 29/10 - Corps semi-conducteurs caractérisés par les formes, les dimensions relatives, ou les dispositions des régions semi-conductrices avec des régions semi-conductrices connectées à une électrode ne transportant pas le courant à redresser, amplifier ou commuter, cette électrode faisant partie d'un dispositif à semi-conducteur qui comporte trois électrodes ou plus
• H01L 21/332 - Thyristors
• H01L 29/744 - Dispositifs désamorçables par la gâchette
• H01L 29/36 - Corps semi-conducteurs caractérisés par la concentration ou la distribution des impuretés
• H01L 29/423 - Electrodes caractérisées par leur forme, leurs dimensions relatives ou leur disposition relative ne transportant pas le courant à redresser, à amplifier ou à commuter

Abrégé

The present disclosure relates to a bushing (1) comprising an electrical conductor (2) comprising a terminal (3) at a first end of the bushing. The bushing also comprises an electrically insulating condenser core (5) arranged around the conductor and defining a central longitudinal through-hole (9) through which the conductor extends. The bushing also comprises a plurality of concentric field-grading layers (6) arranged in the condenser core, comprising an inner field-grading layer (6a) and an outer field-grading layer (6b). The bushing also comprises an electrically conductive head (4) electrically connected with the conductor passing there through, forming a gas-tight cap of the first end of the bushing outside of the condenser core, sealingly engaging a circumferential lateral outer surface of the condenser core and sealingly engaging the conductor. The bushing also comprises an electrically conductive connection (11) between the inner field-grading layer and the head.

Classes IPC  ?

• H01B 17/28 - Isolateurs d'entrée; Isolateurs de traversée du type condensateur
• H02G 15/072 - Boîtes, châssis ou autres structures terminales avec des moyens pour atténuer la contrainte électrique du type condensateur

Abrégé

A power equipment and method for providing the same are disclosed. The power equipment comprises a high voltage part (14, 24, 34), a low voltage part (16, 26, 36), and an insulation oil adapted to impregnate the high voltage part (14, 24, 34) and insulate the high voltage part (14, 24, 34) from the low voltage part (16, 26, 36). The insulation oil is partially filled with polymer particles (5) with a lower thermal expansion coefficient than the insulation oil. The degree of expansion of the insulation medium can be reduced in a cost-effective way.

Classes IPC  ?

• H01B 17/34 - Isolateurs à liquide, p.ex. à huile

Abrégé

A method of analyzing dissolved gas in an oil-filled transformer includes determining a centroid of a polygon that represents a plurality of dissolved gas concentrations. A fault region in which the centroid of the polygon is located is determined, where the plurality of fault regions are defined in a composite fault region map that is a composite of a Duval Pentagons 1 and 2. The method classifies a fault experienced by the transformer based on the determined fault region within the composite fault region map. The classification is done by a machine learning classification technique. Further embodiments classify faults based on dissolved gas levels without determining a centroid of a polygon representing the dissolved gas levels. Related systems are also disclosed.

Classes IPC  ?

• G01N 33/28 - Huiles

Abrégé

Embodiments of present disclosure relate to a connecting unit (10) for use with a gas insulated switchgear (1). The gas insulated switchgear (1) comprises a plurality of busbar disconnectors (2) or busbar units (3) coupled in series, the connecting unit (10) comprising: a hollow plug contact (12) and a bolt (15). The hollow plug contact (12) defines a central axis (A) and comprises a tubular portion (14), a mounting portion (162) and a mounting opening (17). The tubular portion (14) is arranged around the central axis (A) and comprises a first end (16) and a second end (18) opposite to the first end (16). The mounting portion (162) covering the first end (16) of the tubular portion (14) and is provided with a through hole (13) extending parallel to the central axis (A). The mounting opening (17) is arranged at the second end (18) of the tubular portion (14), a busbar conductor (20) of one of the busbar disconnectors (2) or the busbar units (3) being able to be inserted into the mounting opening (17). The bolt (15) is adapted to pass through the through hole (13) to couple to another one of the busbar disconnectors (2) or the busbar units (3). A window (11) is formed on the tubular portion (14) and is suitable for a tool to pass through to access the bolt (15). According to embodiments of present disclosure, the replacement and repair of the busbar disconnectors (2) or the busbar units (3) becomes much easier than conventional solutions.

Classes IPC  ?

• H02B 1/20 - Schémas de barres omnibus ou d'autres fileries, p.ex. dans des armoires, dans les stations de commutation

Abrégé

Disclosed is a power semiconductor module comprising a baseplate, a wide bandgap material die comprising an array of multiple semiconductor circuits in the wide bandgap material die attached to the base plate, wherein the semiconductor circuits are separated by an edge termination area from each other, a metal preform pressed against each of the multiple semiconductor circuits to electrically contact each of the multiple semiconductor circuits and being adapted to form an at least temporary conducting path through the wide bandgap material die, when heated by an overcurrent, wherein the semiconductor circuits are connected in parallel via the base plate and the metal preform.

Classes IPC  ?

• H01L 23/00 - DISPOSITIFS À SEMI-CONDUCTEURS NON COUVERTS PAR LA CLASSE - Détails de dispositifs à semi-conducteurs ou d'autres dispositifs à l'état solide
• H01L 25/07 - Ensembles consistant en une pluralité de dispositifs à semi-conducteurs ou d'autres dispositifs à l'état solide les dispositifs étant tous d'un type prévu dans le même sous-groupe des groupes , ou dans une seule sous-classe de , , p.ex. ensembles de diodes redresseuses les dispositifs n'ayant pas de conteneurs séparés les dispositifs étant d'un type prévu dans le groupe
• H01L 23/62 - Protection contre l'excès de courant ou la surcharge, p.ex. fusibles, shunts
• H01L 27/082 - Dispositifs consistant en une pluralité de composants semi-conducteurs ou d'autres composants à l'état solide formés dans ou sur un substrat commun comprenant des éléments de circuit passif intégrés avec au moins une barrière de potentiel ou une barrière de surface le substrat étant un corps semi-conducteur comprenant uniquement des composants semi-conducteurs d'un seul type comprenant uniquement des composants bipolaires
• H01L 25/18 - Ensembles consistant en une pluralité de dispositifs à semi-conducteurs ou d'autres dispositifs à l'état solide les dispositifs étant de types prévus dans plusieurs sous-groupes différents du même groupe principal des groupes , ou dans une seule sous-classe de ,

Abrégé

A balance spring assembly for a disconnector(200). The balance spring assembly comprises a push rod (101)partially and coaxially arranged in a blade (201)of the disconnector(200) which is rotatable about a first shaft(103) to change an operation status of the disconnector(200), a first end of the push rod(101) fixed to a second shaft(202) so that the push rod (101)is rotatable about the second shaft(202); and a spring(102) arranged in the blade (201)and around the push rod(101), the spring(102) held between a second end of the push rod(101)and an end of the blade (201)adjacent to the first shaft(103), wherein the second shaft(202) is arranged parallel to the first shaft (103)to enable the push rod(101)to axially move in the blade(201) with a rotation of the blade(201) to thereby compress or decompress the spring(102). By arranging the balance spring assembly at least in part in the blade(201) of the disconnector(200), only one set of the spring(102) is needed. Furthermore, extra components such as the protective tube, the auxiliary spring and some connection elements are no longer needed. In this way, the manufacturing and assembling costs are significantly reduced. Furthermore, with this arrangement, the spring(102) can fully work during the whole process when the blade(201) is rotated from the open position to the close position.

Classes IPC  ?

• H01H 71/10 - Mécanismes d'actionnement ou de déclenchement
• H01H 3/30 - Dispositions comportant une énergie à l'intérieur de l'interrupteur pour actionner le mécanisme d'entraînement utilisant un moteur à ressort

Abrégé

The invention relates to a reverse conducting power semiconductor device in which a plurality of thyristor cells (50) and a freewheeling diode (60) are integrated in a semiconductor wafer. A diode anode layer (32) comprises plural first diode anode layer segments (321) that are stripe-shaped in an orthogonal projection onto a plane parallel to a second main side (22) of the semiconductor wafer (20), a longitudinal main axis MA of each first diode anode layer segment (321) extends in a direction away from a lateral center of the semiconductor wafer (20). A first lateral width (w1) of each first diode anode layer segment (321) in a direction perpendicular to its longitudinal main axis (MA) is at any position along the longitudinal axis at least 1000 µm, or at least 1200 µm. The device further comprises plural stripe-shaped local lifetime control regions (91). The diode cathode layer (33) comprises plural stripe-shaped diode cathode layer segments (331). In the orthogonal projection each local lifetime control region (91) and each diode cathode layer segment (331) is arranged within a corresponding first diode anode layer segment (321), respectively.

Classes IPC  ?

• H01L 29/74 - Dispositifs du type thyristor, p.ex. avec un fonctionnement par régénération à quatre zones
• H01L 29/861 - Diodes
• H01L 29/08 - Corps semi-conducteurs caractérisés par les formes, les dimensions relatives, ou les dispositions des régions semi-conductrices avec des régions semi-conductrices connectées à une électrode transportant le courant à redresser, amplifier ou commuter, cette électrode faisant partie d'un dispositif à semi-conducteur qui comporte trois électrodes ou plus
• H01L 29/06 - Corps semi-conducteurs caractérisés par les formes, les dimensions relatives, ou les dispositions des régions semi-conductrices
• H01L 29/10 - Corps semi-conducteurs caractérisés par les formes, les dimensions relatives, ou les dispositions des régions semi-conductrices avec des régions semi-conductrices connectées à une électrode ne transportant pas le courant à redresser, amplifier ou commuter, cette électrode faisant partie d'un dispositif à semi-conducteur qui comporte trois électrodes ou plus
• H01L 29/423 - Electrodes caractérisées par leur forme, leurs dimensions relatives ou leur disposition relative ne transportant pas le courant à redresser, à amplifier ou à commuter
• H01L 29/32 - Corps semi-conducteurs ayant des surfaces polies ou rugueuses les défectuosités étant à l'intérieur du corps semi-conducteur

Abrégé

A power semiconductor module (10), comprising: a substrate (12) with a metallization layer (14), which is structured; at least one semiconductor chip (18) bonded to the metallization layer (14) with a first side; a metal clip (20), which is a strip of metal, bonded with a first planar part (20a) to a second side of the semiconductor chip (18) opposite to the first side and bonded with a second planar part (20b) to the metallization layer (14); a mold encapsulation (30) at least partially enclosing the substrate (12), the at least one semiconductor chip (18) and the metal clip (20), the mold encapsulation (30) having a recess (32) approaching towards the first planar part (20a) of the metal clip (20); a circuit board (34) attached to the mold encapsulation (30) above the recess (32); wherein the semiconductor chip (18), to which the metal clip (20) is bonded, is completely enclosed by the mold encapsulation (30), the substrate (12) and the metal clip (20); wherein the first planar part (20a) of the metal clip (20) is at least partially exposed by the recess (32); wherein the circuit board (34) carries a sensor (36, 38, 40) accommodated in the recess (32).

Classes IPC  ?

• H01L 23/48 - Dispositions pour conduire le courant électrique vers le ou hors du corps à l'état solide pendant son fonctionnement, p.ex. fils de connexion ou bornes
• H01L 23/34 - Dispositions pour le refroidissement, le chauffage, la ventilation ou la compensation de la température
• H01L 23/473 - Dispositions pour le refroidissement, le chauffage, la ventilation ou la compensation de la température impliquant le transfert de chaleur par des fluides en circulation par une circulation de liquides
• H01L 23/62 - Protection contre l'excès de courant ou la surcharge, p.ex. fusibles, shunts
• H01L 25/07 - Ensembles consistant en une pluralité de dispositifs à semi-conducteurs ou d'autres dispositifs à l'état solide les dispositifs étant tous d'un type prévu dans le même sous-groupe des groupes , ou dans une seule sous-classe de , , p.ex. ensembles de diodes redresseuses les dispositifs n'ayant pas de conteneurs séparés les dispositifs étant d'un type prévu dans le groupe
• H01L 23/31 - Capsulations, p.ex. couches de capsulation, revêtements caractérisées par leur disposition

Abrégé

A power semiconductor module (10) comprises at least one semiconductor board (16) comprising at least two semiconductor chips (24), each semiconductor chip (24) having two power electrodes (26, 28); an adapter board (14) attached to the semiconductor board (16) above the at least two semiconductor chips (24), the adapter board (14) comprising a terminal area (46) for each semiconductor chip (24) on a side facing away from the semiconductor board (16); wherein the adapter board (14), in each terminal area (46), provides a power terminal (42) for each power electrode (26, 28) of the semiconductor chip (24) associated with the terminal area (46); wherein each power terminal (42) is electrically connected via an electrical conductive vertical post (34, 36) below the terminal area (46) with the semiconductor chip (24).

Classes IPC  ?

• H01L 23/538 - Dispositions pour conduire le courant électrique à l'intérieur du dispositif pendant son fonctionnement, d'un composant à un autre la structure d'interconnexion entre une pluralité de puces semi-conductrices se trouvant au-dessus ou à l'intérieur de substrats isolants
• H01L 25/07 - Ensembles consistant en une pluralité de dispositifs à semi-conducteurs ou d'autres dispositifs à l'état solide les dispositifs étant tous d'un type prévu dans le même sous-groupe des groupes , ou dans une seule sous-classe de , , p.ex. ensembles de diodes redresseuses les dispositifs n'ayant pas de conteneurs séparés les dispositifs étant d'un type prévu dans le groupe
• H02M 7/00 - Transformation d'une puissance d'entrée en courant alternatif en une puissance de sortie en courant continu; Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant alternatif
• H05K 1/14 - Association structurale de plusieurs circuits imprimés
• H05K 3/22 - Traitement secondaire des circuits imprimés
• H01L 23/498 - Connexions électriques sur des substrats isolants
• H01L 23/373 - Refroidissement facilité par l'emploi de matériaux particuliers pour le dispositif
• H05K 1/02 - Circuits imprimés - Détails

Abrégé

Examples of fault location in a power transmission line connecting a first and a second terminal is described. In an example, arrival times of a first peak, a second peak, and a third peak of a travelling wave detected from measurements carried out at the first and second terminals is detected. A rise time associated with the first peak of the travelling wave is calculated. One of a first half and a second half of the power transmission line is identified, as having a fault, based on a comparison of the rise time. One of a first segment, a second segment, a third segment, and a fourth segment of the power transmission line is identified as having the fault. Length of the power transmission line is estimated. The fault location is estimated based on identification of one of the first, second, third, and fourth segments as having the fault.

Classes IPC  ?

• G01R 31/08 - Localisation de défauts dans les câbles, les lignes de transmission ou les réseaux

Abrégé

A method for manufacturing an electric winding of an electromagnetic induction apparatus, comprising the following steps: - providing a conductor structure (1) comprising a conductor element (2) extending longitudinally along a main extension direction (L) and one or more spacer bands (3) arranged on corresponding lateral surfaces of said conductor element, each spacer band including a supporting structure (30) made of electrically insulating material and spacer elements (31) made of electrically insulating material arranged on said supporting structure, said spacer elements being spaced one from another along said supporting structure; - forming an electric winding (100) by means of said conductor structure, said electric winding extending axially along a winding direction (DW) and having a plurality of turns (101) arranged around said winding direction; Each turn of said electric winding is formed by a corresponding longitudinal portion of said conductor element. Said spacer elements are interposed between adjacent turns of said electric winding at opposite sides of said turns.

Classes IPC  ?

• H01F 27/32 - Isolation des bobines, des enroulements, ou de leurs éléments
• H01F 5/06 - Isolement des enroulements
• H01F 27/28 - Bobines; Enroulements; Connexions conductrices
• H01F 41/12 - Isolement d'enroulements

Abrégé

A locking arrangement (16) for securing electric module cards (14) between two side walls (18) of a housing (12), the locking arrangement (16) comprising two side members (26) for fixed arrangement with the respective side walls (18); an opening (32) for accommodating electric contacts (24) of the electric module cards (14) defined between the side members (26); a first and a second transverse member (28) configured to form a frame with the side members (26) in order to lock the electric module cards (14) within the housing (12); and at least one locking mechanism (34) configured to detachably connect at least one of the transverse members (28) to at least one of the side members (26) by means of a snap-fit. A housing (12) for accommodating electric module cards (14) and an electric device (10) comprising a housing (12) are also provided.

Classes IPC  ?

• H05K 7/14 - Montage de la structure de support dans l'enveloppe, sur cadre ou sur bâti

Abrégé

An epoxy formulation is provided with improved properties for electrical components exposed to a voltage differential. The improved electrical properties can include increased glass transition temperature, increased breakdown strength and/or lower loss factor. Electrical components may be formed from the epoxy formulation by 3D printing the epoxy formulation and curing the formulation with UV radiation. The epoxy formulation may include epoxy, a photoinitiator and an accelerator.

Classes IPC  ?

• C08G 59/24 - Composés diépoxydés carbocycliques
• B29C 64/124 - Procédés de fabrication additive n’utilisant que des matériaux liquides ou visqueux, p.ex. dépôt d’un cordon continu de matériau visqueux utilisant des couches de liquide à solidification sélective
• C08G 59/68 - Macromolécules obtenues par polymérisation à partir de composés contenant plusieurs groupes époxyde par molécule en utilisant des agents de durcissement ou des catalyseurs qui réagissent avec les groupes époxyde caractérisées par les catalyseurs utilisés
• C08G 65/18 - Oxétanes

Abrégé

A method for manufacturing an electric winding of an electromagnetic induction apparatus, comprising the following steps: - providing a conductor structure (1) including a conductor element (2) extending longitudinally along a main extension direction (L) and one or more spacer tapes (3) of electrically insulating material around said conductor element along said main extension direction (L), each spacer tape having spacer portions (3A, 3B) at corresponding lateral surfaces (2A, 2B) of said conductor element, said spacer portions (3A, 3B) being spaced one from another along the lateral surfaces (2A, 2B) of said conductor element; - forming an electric winding (100) by means of said conductor structure, said electric winding extending axially along a winding direction (DW) and having a plurality of turns (101) arranged around said winding direction. Each turn (101) of said electric winding (100) is formed by a corresponding longitudinal portion (2E, 2F) of said conductor element (2). The spacer portions (3A, 3B) of each spacer tape (3) are interposed between adjacent turns of said electric winding (100) at opposite sides (101A, 101B) of said turns (101). The spacer portions (3A; 3B) are respectively positioned spaced one from another to define an empty space (3C) to form a radial channel (104) of the electric winding (100), wherein the radial channel (104) is configured for a passage of an electrically insulating medium.

Classes IPC  ?

• H01F 27/32 - Isolation des bobines, des enroulements, ou de leurs éléments
• H01F 5/06 - Isolement des enroulements
• H01F 27/28 - Bobines; Enroulements; Connexions conductrices
• H01F 41/12 - Isolement d'enroulements

Abrégé

There are provided mechanisms for assigning channels to end-nodes (120a-120N) in a wireless communication system (100). A method is performed by a network controller (200) of the wireless communication system (100). The method comprises classifying (S102) each available channel in the wireless communication system (100) into one of multiple channel categories according to performance and usability characteristics of each available channel. The method comprises ranking (S104) the channels per each category. The method comprises assigning (S106), according to the channels as ranked, at least one of the channels to each of the end-nodes (120a- 120N). The method comprises providing (S108), in a channel list and to the end- nodes (120a-120N), information of which at least one channel has been assigned to each end-node (120a-120N).

Classes IPC  ?

• H04L 27/00 - Systèmes à porteuse modulée
• H04W 16/14 - Dispositions de partage du spectre de fréquence
• H04W 72/04 - Affectation de ressources sans fil

Abrégé

An apparatus and method of power transmission, the apparatus of power transmission implemented at a transmitting station comprises: a first converter (210) configured to convert a first three-phase AC component of a first frequency into a second three-phase AC component of a second frequency, the second frequency being less than the first frequency and greater than a predetermined frequency; and a first controller (220) coupled to the first converter (210) and configured to cause the second three-phase AC component to be transmitted in an AC transmission line (150). The apparatus of power transmission implemented at a receiving station comprises: a second controller (510) configured to cause the second three-phase AC component to be received from the AC transmission line (150); and a second converter (520) coupled to the second controller (510) and configured to convert the second three-phase AC component into the first three-phase AC component. In this way, the limitation from the space charge accumulation of cable system can be eliminated, and an improvement of the power transmission capacity can be facilitated.

Classes IPC  ?

• H02J 3/00 - Circuits pour réseaux principaux ou de distribution, à courant alternatif

Abrégé

Systems, methods, techniques and apparatuses of state estimation are disclosed. One exemplary embodiment is a method comprising determining, with a state estimator, a state estimate based on power grid data corresponding to characteristics of a power grid; calculating, with the state estimator, a gradient based on the state estimate; calculating, with the state estimator, a first gain matrix based on a Gauss-Newton method and a second gain matrix based on Newton's method; selecting, with the state estimator, either the first gain matrix or the second gain matrix for calculating a correction of the state estimate; calculating, with the state estimator, the correction of the state estimate; updating, with the state estimator, the state estimate; and determining, with the state estimator, whether the updated state estimate has converged.

Classes IPC  ?

• H02J 13/00 - Circuits pour pourvoir à l'indication à distance des conditions d'un réseau, p.ex. un enregistrement instantané des conditions d'ouverture ou de fermeture de chaque sectionneur du réseau; Circuits pour pourvoir à la commande à distance des moyens de commutation dans un réseau de distribution d'énergie, p.ex. mise en ou hors circuit de consommateurs de courant par l'utilisation de signaux d'impulsion codés transmis par le réseau
• G01R 19/25 - Dispositions pour procéder aux mesures de courant ou de tension ou pour en indiquer l'existence ou le signe utilisant une méthode de mesure numérique
• G01R 21/133 - Dispositions pour procéder aux mesures de la puissance ou du facteur de puissance en utilisant des techniques numériques

Abrégé

The present disclosure relates to an air-to-air through-wall bushing (1) comprising a conductor (11), insulation (13) surrounding the conductor, a ventilation inlet at a first end (15a) of the bushing, and a ventilation outlet at a second end (15b) of the bushing. The bushing is arranged through a wall and a pressure difference between a first pressure (P1) on a first side of the wall and a second pressure (P2) on a second side of the wall is provided The inlet and outlet allow cooling air to pass through a ventilation channel (14) within the bushing driven by the provided pressure difference.

Classes IPC  ?

• H01B 17/26 - Isolateurs d'entrée; Isolateurs de traversée

Abrégé

A dry-type transformer (100), comprises a magnetic core (180), at least one high voltage (HV) winding (110), and at least one low voltage (LV) winding (120) inductively coupled to the magnetic core (180). The transformer (100) is made by determining a shape of an electric field that is generated, 3D printing a dielectric structure (130) shaped to conform to the determined shape of the electric field, and mounting the dielectric structure (130) between the HV and LV windings (110, 120). A dielectric barrier arrangement for electrically isolating a coil (2) of a transformer assembly from a further coil (4) of the transformer assembly or from a core (6) of the transformer assembly comprises a first dielectric structure (10; 130) having a first cylindrical dielectric structure (12; 135) extending along a longitudinal axis (L), and a second dielectric structure (20; 130) having a second cylindrical dielectric structure (22; 135), extending along the longitudinal axis (L). The second cylindrical dielectric structure (22; 135) at least partially coaxially surrounds the first cylindrical dielectric structure (12; 135). The barrier arrangement is designed such that the second dielectric structure (20; 130) is separate from the first dielectric structure (10; 130).

Classes IPC  ?

• H01F 27/30 - Fixation ou serrage de bobines, d'enroulements ou de parties de ceux-ci entre eux; Fixation ou montage des bobines ou enroulements sur le noyau, dans l'enveloppe ou sur un autre support
• B29C 64/00 - Fabrication additive, c. à d. fabrication d’objets en trois dimensions [3D] par dépôt additif, agglomération additive ou stratification additive, p.ex. par impression en 3D, stéréolithographie ou frittage laser sélectif
• G06F 30/23 - Optimisation, vérification ou simulation de l’objet conçu utilisant les méthodes des éléments finis [MEF] ou les méthodes à différences finies [MDF]
• H01F 27/32 - Isolation des bobines, des enroulements, ou de leurs éléments
• H01F 41/12 - Isolement d'enroulements
• H01F 27/08 - Refroidissement; Ventilation
• H01F 30/12 - Transformateurs diphasés, triphasés ou polyphasés

Abrégé

The present disclosure provides a contact actuating unit for an electrical circuit breaker. The contact actuating unit comprises an electro-mechanical device. An actuator of the electro-mechanical device is connected to a contact arrangement in the electrical circuit breaker. The contact actuating unit further comprises a control unit. The control unit is configured to control the electro-mechanical device to move the actuator and to bring the contact arrangement from a first to a second position. The contact actuating unit further comprises a command feed forward or motion trajectory and feed forward controller, configured to provide one or more data signals. At least one of the provided data signals is indicative of a predetermined force and/or torque value, adapted to command the control unit to move the contact arrangement with the actuator to a predetermined position.

Classes IPC  ?

• H01H 9/56 - Circuits non adaptés à une application particulière du dispositif de commutation non prévus ailleurs pour assurer le fonctionnement de l'interrupteur en un point déterminé de la période du courant alternatif
• H01H 33/59 - Circuits non adaptés à une application particulière de l'interrupteur et non prévus ailleurs, p.ex. pour assurer le fonctionnement de l'interrupteur en un point déterminé de la période du courant alternatif
• H02P 27/08 - Dispositions ou procédés pour la commande de moteurs à courant alternatif caractérisés par le type de tension d'alimentation utilisant une tension d’alimentation à fréquence variable, p.ex. tension d’alimentation d’onduleurs ou de convertisseurs utilisant des convertisseurs de courant continu en courant alternatif ou des onduleurs avec modulation de largeur d'impulsions

Abrégé

A shunt reactor comprising a primary winding (1) and a steel core (2) is presented. The steel core comprises a bottom yoke (3), a top yoke (4), a first core limb (5), a second core limb (6), and a main limb (7). The first core limb, the second core limb and the main limb are arranged in parallel and in between the top yoke and the bottom yoke to form a support for a magnetic flux through the steel core. The primary winding is wound around the main limb to generate the magnetic flux through the steel core. The shunt reactor further comprises an auxiliary winding (8; 8') arranged wound around the bottom yoke, top yoke, first core limb, or second core limb, and is configured to generate auxiliary power from the magnetic flux generated by the primary winding. The primary and the auxiliary windings are electrically insulated from the steel core and from each other. A cooling fan (12) is configured to be driven by the auxiliary power generated by the auxiliary winding.

Classes IPC  ?

• H01F 27/38 - Organes de noyaux auxiliaires; Bobines ou enroulements auxiliaires
• H01F 37/00 - Inductances fixes non couvertes par le groupe

Abrégé

A method for power transfer between medium voltage, MV, feeders in a power distribution network is presented. The power distribution network comprises at least two MV feeders (F1, F2, F3, F4) and at least two MV direct current, MVDC, links (MVDC1, MVDC2, MVDC3) arranged between the at least two MV feeders. The method is performed in a controller (1) and comprises detecting (S100) overload in one of the at least two MV feeders, checking (S110) power headroom in an MV feeder adjacent the detected overloaded MV feeder or in an MVDC link connected to the detected overloaded MV feeder, thereafter checking (S120) power headroom in the connected MVDC link or in the adjacent MV feeder, changing (S130) a power set point of the connected MVDC link to reduce the detected overload, and when (S140) part of the overload remains, checking (S150) power headroom in a next MV feeder adjacent the detected overloaded MV feeder or in a next MVDC link connected to the detected overloaded MV feeder,and changing a power set point of the next connected MVDC link to further reduce the remaining overload.A controller implementing the method is also presented.

Classes IPC  ?

• H02J 3/00 - Circuits pour réseaux principaux ou de distribution, à courant alternatif
• H02J 5/00 - Circuits pour le transfert d'énergie électrique entre réseaux à courant alternatif et réseaux à courant continu
• H02M 7/521 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant alternatif sans possibilité de réversibilité par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande utilisant des dispositifs du type thyratron ou thyristor exigeant des moyens d'extinction utilisant uniquement des dispositifs à semi-conducteurs dans une configuration en pont
• H02J 3/36 - Dispositions pour le transfert de puissance électrique entre réseaux à courant alternatif par l'intermédiaire de haute tension à courant continu

Abrégé

1n1n1n1nn.

Classes IPC  ?

• H01B 17/28 - Isolateurs d'entrée; Isolateurs de traversée du type condensateur
• B33Y 80/00 - Produits obtenus par fabrication additive
• H01G 4/32 - Condensateurs enroulés
• H02G 15/072 - Boîtes, châssis ou autres structures terminales avec des moyens pour atténuer la contrainte électrique du type condensateur

Abrégé

Ud0Uq0q0]TNTUdαUdβdβ]TUqαUqβqβ]TUU) for controlling the phase and amplitude of the SFC's output. A first component of the composite control signal is a sum of a first component of the fundamental control signal and a first component of the transformed first modulating signal. A second component of the composite control signal is a sum of a second component of the fundamental control signal and a first component of the transformed second modulating signal.

Classes IPC  ?

• H02M 1/12 - Dispositions de réduction des harmoniques d'une entrée ou d'une sortie en courant alternatif
• H02M 7/5387 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant alternatif sans possibilité de réversibilité par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande utilisant des dispositifs du type triode ou transistor exigeant l'application continue d'un signal de commande utilisant uniquement des dispositifs à semi-conducteurs, p.ex. onduleurs à impulsions à un seul commutateur dans une configuration en pont
• G01R 31/00 - Dispositions pour tester les propriétés électriques; Dispositions pour la localisation des pannes électriques; Dispositions pour tests électriques caractérisées par ce qui est testé, non prévues ailleurs

Abrégé

An electrical apparatus (100) comprises a housing (110) including an observing window (112), a movable component (120) located inside the housing (110) and adapted to be moved in a direction, and a positioning mark (130) located on the movable component (120) and adapted to be captured through the observing window (112) by an imaging device (140). Position of the positioning mark (130) on the movable component (120) indicates a closing status of the electrical apparatus (100). The electrical apparatus (100) achieves a position monitoring system which can accurately record the position information with high operational reliability and long-term stability.

Classes IPC  ?

• H01H 9/16 - Indicateurs de position, p.ex. "marche" ou "arrêt"

Abrégé

It relates to an electrical apparatus. The electrical apparatus comprises a housing (110) including an observing window (112); and a thermochromic indicator (120) located inside the housing (110) and adapted to be captured through the observing window (112) by an imaging device (140), an image of the thermochromic indicator (120) indicating a temperature inside the housing (110) of the electrical apparatus. It may achieve a temperature monitoring system which can accurately determine the temperature with high operational reliability and long-term stability.

Classes IPC  ?

• H02B 13/025 - Dispositions pour la sécurité, p.ex. en cas de surpression ou d'incendie causés par un défaut électrique
• G01J 5/48 - Thermographie; Techniques utilisant des moyens entièrement visuels
• G01K 11/12 - Mesure de la température basée sur les variations physiques ou chimiques, n'entrant pas dans les groupes , , ou utilisant le changement de couleur, de translucidité ou de réflectance

Abrégé

A tuned mass damper (14) comprising an elongated element (22)having a free end (40) and a joint end (42) opposite to the free end (40); a fixation member (24) for being fixed to the structure (12); a mass arrangement (26) connected to the elongated element (22); a joint (28) arranged between the joint end (42) and the fixation member (24), the joint (28) being arranged to allow movements of the elongated element (22) in at least one displacement plane (XZ, YZ) comprising a neutral axis (44) in a neutral position (38) of the elongated element (22); a spring arrangement (30, 32) arranged to exert a restoring spring force to the elongated element (22) when the elongated element (22) is displaced from the neutral position (38); and a damping arrangement (34, 36) arranged to exert a damping force against movements of the elongated element (22) from the neutral position (38). A system (10) comprising a structure (12) and a tuned mass damper(14) is also provided.

Classes IPC  ?

• F16F 7/10 - Amortisseurs de vibrations; Amortisseurs de chocs utilisant un effet d'inertie
• F16F 7/104 - Amortisseurs de vibrations; Amortisseurs de chocs utilisant un effet d'inertie l'élément d'inertie étant monté de manière élastique
• F16F 15/02 - Suppression des vibrations dans les systèmes non rotatifs, p.ex. dans des systèmes alternatifs; Suppression des vibrations dans les systèmes rotatifs par l'utilisation d'organes ne se déplaçant pas avec le système rotatif

Abrégé

An inductive power device with variable active winding size, comprises first circuitry, multiple winding segments (3.1, 3.2, 3.3, 3.4) and switching circuitry (4) operable to connect selectable combinations of the winding segments serially to the first circuitry via taps (7). At least two of the winding segments are of unequal size, wherein said at least two winding segments are provided as sequential portions of a total winding (5) magnetically coupled to an opposite winding (6), wherein the winding segments have uniform polarity with respect to said magnetic coupling. The switching circuitry comprises an arrangement of semiconductor switches (8.1, 8.2, …, 8.8) which are operable to include or exclude each winding segment independently. In an embodiment, the arrangement of switches comprises at least one half-bridge structure.

Classes IPC  ?

• H01F 29/04 - Transformateurs ou inductances variables non couverts par le groupe avec possibilités de regroupement ou d'interconnexion des enroulements avec possibilité de changer de prise sans interrompre le courant de charge
• H01F 29/02 - Transformateurs ou inductances variables non couverts par le groupe avec possibilités de regroupement ou d'interconnexion des enroulements
• H02P 13/06 - Dispositions de commande de transformateurs, réactances ou bobines d'arrêt de façon à obtenir les caractéristiques désirées à la sortie par modification des connexions des enroulements

Abrégé

The invention is concerned with a transformer arrangement (10) wherein active and/or reactive power can be injected in an alternating current link (ACL) using a current regulator (20) and a voltage regulator portion (16), wherein at least one winding with which the current regulator is connected in parallel is at least one tertiary winding (12TA, 12TB, 12TC, 12TD, 12TE; 12T), and wherein the current regulator comprises a number of current regulator sections (20A, 20B, 20C, 20D, 20E), each connected to a corresponding voltage regular section (16A, 16B, 16C, 16D) of a voltage regulator portion (16) via a corresponding dc link (DCL).

Classes IPC  ?

• H02J 3/18 - Dispositions pour réglage, élimination ou compensation de puissance réactive dans les réseaux

Abrégé

Systems, methods, techniques and apparatuses of asynchronous communication is distributed systems are disclosed. One exemplary embodiment is a method determining, with a plurality of agent nodes structured to communicate asynchronously in a distributed system, a first set of iterations including an iteration determined by each of the plurality of agent nodes; determining, with a first agent node of the plurality of agent nodes, a local vector clock; receiving, with the first agent node, a first iteration of the first set of iterations and a remote vector clock determined based on the first iteration; updating, with the first agent node, the local vector clock based on the received remote vector clock; and determining a first iteration of a second set of iterations based on the first set of iterations after determining all iterations of the first set of iterations have been received based on the local vector clock.

Classes IPC  ?

• H04L 29/08 - Procédure de commande de la transmission, p.ex. procédure de commande du niveau de la liaison

Abrégé

The invention is concerned with a transformer arrangement (10) comprising a transformer (12) with a primary and a secondary winding (12P, 12S) and a chain link (14) of switching blocks connected in series between one of the windings and a load (L), where the switching blocks comprise a first set of voltage contribution blocks and a second set of circuit breaker blocks, where the first set of voltage contribution blocks is configured to adjust a voltage output by the transformer (12) with an offset voltage and the second set of circuit breaker blocks is configured to interrupt a current running through the chain link (14).

Classes IPC  ?

• H01H 9/54 - Circuits non adaptés à une application particulière du dispositif de commutation non prévus ailleurs
• G05F 1/10 - Régulation de la tension ou de l'intensité
• G05F 1/30 - Régulation de la tension ou de l'intensité là où la variable effectivement régulée par le dispositif de réglage final est du type alternatif utilisant des transformateurs montés en série ou en opposition comme dispositifs de réglage final associés à des tubes à décharge ou à des dispositifs à semi-conducteurs à des dispositifs à semi-conducteurs uniquement
• H02M 3/335 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant continu avec transformation intermédiaire en courant alternatif par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrodes de commande pour produire le courant alternatif intermédiaire utilisant des dispositifs du type triode ou transistor exigeant l'application continue d'un signal de commande utilisant uniquement des dispositifs à semi-conducteurs
• H02M 5/04 - Transformation d'une puissance d'entrée en courant alternatif en une puissance de sortie en courant alternatif, p.ex. pour changement de la tension, pour changement de la fréquence, pour changement du nombre de phases sans transformation intermédiaire en courant continu par convertisseurs statiques
• H02M 5/257 - Transformation d'une puissance d'entrée en courant alternatif en une puissance de sortie en courant alternatif, p.ex. pour changement de la tension, pour changement de la fréquence, pour changement du nombre de phases sans transformation intermédiaire en courant continu par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande utilisant des dispositifs du type thyratron ou thyristor exigeant des moyens d'extinction utilisant uniquement des dispositifs à semi-conducteurs

Abrégé

A transformer, in particular a medium frequency transformer for a resonant DC/DC converter or a dual active bridge DC/DC converter, comprising, b) a core, in particular a core having an air gap; c) a first coil surrounding a first section of the core; d) an electric insulation, in particular a medium voltage electric insulation, surrounding the first coil; e) wherein the first coil comprises a plurality of M first windings; f) each of the plurality of M first windings comprising i) a first termination and a second termination, ii) a conductor wound around the first portion of the core in at least one turn between the first and second termination, g) a plurality of M first terminals provided outside of the insulation, each of said first terminals connected to a different one of the first terminations by one of a plurality of M first connectors, thus connecting each first terminal to a respective first termination; the transformer further comprising: h) a first channel extending from an outside of the electric insulation into and at least partially through said electric insulation, wherein the plurality of M first connectors extend through the first channel; wherein i) the plurality of M first connectors are insulated against one another by means of a low voltage insulation within the channel, and wherein preferably no medium voltage and/or high voltage insulation is present between any two of the first connectors; j) the second terminations are connected to one another within or inside the electric insulation; k) a second terminal (421) is provided outside of the electric insulation, and connected to the second terminations by a second connector (423).

Classes IPC  ?

• H01F 27/04 - Passages de conducteurs ou d'axes à travers les enveloppes, p.ex. pour dispositifs de changement de prise
• H01F 27/29 - Bornes; Aménagements de prises
• H01F 27/32 - Isolation des bobines, des enroulements, ou de leurs éléments
• H01F 27/02 - Enveloppes
• H01F 27/28 - Bobines; Enroulements; Connexions conductrices

Abrégé

The invention relates to a power semiconductor module (100). The power semiconductor module (100) comprises a substrate (102) with a terminal area (108), at least one power semiconductor chip (104) electrically connected to the terminal area (108), and at least two terminals (116, 118) embedded in a thermosetting polymer to form a terminal block (114). The terminal block (114) exposes an end (120, 122) of each of the terminals (116, 118) and the end (120) of each terminal (116, 118) is connected to the terminal area (108).

Classes IPC  ?

• H01L 25/07 - Ensembles consistant en une pluralité de dispositifs à semi-conducteurs ou d'autres dispositifs à l'état solide les dispositifs étant tous d'un type prévu dans le même sous-groupe des groupes , ou dans une seule sous-classe de , , p.ex. ensembles de diodes redresseuses les dispositifs n'ayant pas de conteneurs séparés les dispositifs étant d'un type prévu dans le groupe
• H01L 23/049 - Conteneurs; Scellements caractérisés par la forme le conteneur étant une structure creuse ayant une base conductrice qui sert de support et en même temps de connexion électrique pour le corps semi-conducteur les autres connexions étant perpendiculaires à la base
• H01L 23/498 - Connexions électriques sur des substrats isolants

Abrégé

The invention relates to an electrical vehicle (1) comprising an energy transfer device (2) configured for electrically connecting the electrical vehicle (1) to a charging station (3), whereby the energy transfer device (2) comprises a lengthwise link (4) and a crosswise link (9) each having an upper end and lower end, the lower ends are arranged on the electrical vehicle (1) slidably in crosswise direction of the electrical vehicle (1), the upper end of the crosswise link (9) is connected to the lengthwise link (4) between its ends such that by sliding the lower ends of the lengthwise link (4) and the crosswise link (9) towards each other the upper end of the lengthwise link (4) is moved away from the electrical vehicle (1) for connecting to the charging station (3).

Classes IPC  ?

• B60L 5/00 - Collecteurs de courant pour lignes d'alimentation en énergie sur les véhicules propulsés électriquement
• B60L 5/08 - Structure des sabots curseurs ou de leurs dispositifs de montage
• B60L 5/34 - Collecteurs de courant pour lignes d'alimentation en énergie sur les véhicules propulsés électriquement avec dispositifs permettant à un véhicule d'en croiser un autre en utilisant la même ligne d'alimentation

Abrégé

Electrical bushing for medium and high voltage, the bushing comprising a fluid filled insulation volume; a sensor unit in contact with the fluid in the fluid filled insulation volume; wherein the sensor unit is configured to measure a breakdown voltage of the fluid.

Classes IPC  ?

• G01R 31/12 - Test de la rigidité diélectrique ou de la tension disruptive
• H01B 17/26 - Isolateurs d'entrée; Isolateurs de traversée

Abrégé

A tulip contact for a power switch comprises a rotationally symmetric contact body (100) having a first end (120) and a second end (130), and a plurality of slits (210, 220). The slits are arranged in the body and extend parallel to a symmetrical axis (140) of the body. The slits define a length between the first end and a root of the slits, wherein the length of the slit is shorter than a length of the contact body (100). The slits have a first width at the first end (120) and a second width at the root of the slits, wherein the first width is bigger than the second width. A hook-shape extension (500) of the slit reduces gas-turbulence inside the tulip contact as well as providing stress-relief.

Classes IPC  ?

• H01H 1/38 - Contacts à fiche et prise

Abrégé

The present specification provides a method and device for determining a disturbance condition in a power transmission line. The method includes obtaining (302) a plurality of sample values corresponding to an electrical parameter measured in each phase. The method further includes determining (304) a plurality of magnitudes of the electrical parameter corresponding to each phase based on the corresponding plurality of sample values and determining (306) a plurality of difference values for each phase based on the corresponding plurality of magnitudes. The method includes processing (308) the plurality of difference values using a machine learning technique to determine the disturbance condition. The disturbance condition is one of a load change condition, a power swing condition and an electrical fault condition. The method also includes performing (310) at least one of a protection function and a control function based on the disturbance condition.

Classes IPC  ?

• H02H 1/00 - CIRCUITS DE PROTECTION DE SÉCURITÉ - Détails de circuits de protection de sécurité
• G01R 31/08 - Localisation de défauts dans les câbles, les lignes de transmission ou les réseaux
• H02H 3/44 - Circuits de protection de sécurité pour déconnexion automatique due directement à un changement indésirable des conditions électriques normales de travail avec ou sans reconnexion sensibles aux taux de variation de quantités électriques
• H02H 7/22 - Circuits de protection de sécurité spécialement adaptés pour des machines ou appareils électriques de types particuliers ou pour la protection sectionnelle de systèmes de câble ou ligne, et effectuant une commutation automatique dans le cas d'un chan pour dispositifs de commutation

Abrégé

The present disclosure relates to a bushing comprising a conductor tube (20), a support tube (21), arranged within the conductor tube, a draw-rod (22) configured to run through the support tube, and a contact arrangement (26) arranged to be drawn into the conductor tube by the draw-rod. The contact arrangement comprises a sealing plug (28) arranged for sealingly engaging an inside wall of the conductor tube to prevent liquid from passing the sealing plug into the conductor tube.

Classes IPC  ?

• H01B 17/30 - Scellement
• H01F 27/04 - Passages de conducteurs ou d'axes à travers les enveloppes, p.ex. pour dispositifs de changement de prise

Abrégé

The present disclosure relates to a condenser core configured for surrounding an electrical conductor. The condenser core comprises an insulation material and a plurality of electrically conducting capacitive layers (5) for modifying electrical fields formed by a current flowing in the electrical conductor. At least one of the electrically conducting capacitive layers comprises a first foil (5a) and a second foil (5b). Each of the first and second foils of an outermost capacitive layer is connected with a grounding arrangement (10a, 10b) for grounding the foils.

Classes IPC  ?

• H01G 4/16 - Diélectriques organiques en matériau fibreux, p.ex. en papier
• H01G 4/242 - Bornes l'élément capacitif entourant la borne
• H01G 4/32 - Condensateurs enroulés
• H01G 4/35 - Condensateurs de traversée ou condensateurs antiparasites
• H01B 17/28 - Isolateurs d'entrée; Isolateurs de traversée du type condensateur

Abrégé

A transformer assembly (1) for electric grids comprising: - an electric transformer (2) comprising a magnetic core (20), a first side (2A) including one or more first windings (21) enchained with said magnetic core and adapted to be electrically connected to a first grid section (50) and a second side (2B) including one or more second windings (22) enchained with said magnetic core and adapted to be electrically connected to a second grid section (60); - a tap changer (3) operatively associated with said electric transformer (2) to vary the number of turns enchained with said magnetic core (20) for said first windings (21). The transformer assembly comprises a control unit (6) operatively coupled with said tap changer (3) to control the operation of said tap changer, said control unit being configured to: - acquire input data (IN) indicative of an electrical connectivity condition of said second grid section (60) with said second windings (22); - basing on said input data (IN), determine whether said transformer (2) is in a load condition or in a no-load condition; - if said transformer (2) is in a no-load condition, command said tap changer to set a maximum available number of turns for said first windings (21).

Classes IPC  ?

• G05F 1/14 - Régulation de la tension ou de l'intensité là où la variable effectivement régulée par le dispositif de réglage final est du type alternatif utilisant des transformateurs à prises ou des inductances à changement de prises comme dispositifs de réglage final
• H02M 5/12 - Transformation d'une puissance d'entrée en courant alternatif en une puissance de sortie en courant alternatif, p.ex. pour changement de la tension, pour changement de la fréquence, pour changement du nombre de phases sans transformation intermédiaire en courant continu par convertisseurs statiques utilisant des transformateurs pour la transformation de l'amplitude de la tension ou du courant seulement
• H02P 13/06 - Dispositions de commande de transformateurs, réactances ou bobines d'arrêt de façon à obtenir les caractéristiques désirées à la sortie par modification des connexions des enroulements

Abrégé

A circuit breaking apparatus (100) comprises a circuit breaker (110), a motor drive system (120), and a controller (150). The circuit breaker (110) is electrically connectable to a power line (115). The motor drive system (120) is mechanically coupled to the circuit breaker (110) and configured to operate the circuit breaker (110) such as to perform a movement including at least an opening movement from a closed position to an open position, thereby electrically interrupting the power line (115). The controller (150) includes a model (155) of at least one of the motor drive system (120) and the circuit breaker (110). The controller (150) is configured to receive reference travel curve information (200) of the movement; generate actuator information (210) from the reference travel curve information (200) based on the model (155); and output the actuator information (210) to the motor drive system (120) to control a travel curve via model -based control.

Classes IPC  ?

• H01H 11/00 - Appareillages ou procédés spécialement adaptés à la fabrication d'interrupteurs électriques
• G06F 17/10 - Opérations mathématiques complexes
• H01H 9/54 - Circuits non adaptés à une application particulière du dispositif de commutation non prévus ailleurs
• H01H 9/56 - Circuits non adaptés à une application particulière du dispositif de commutation non prévus ailleurs pour assurer le fonctionnement de l'interrupteur en un point déterminé de la période du courant alternatif
• H01H 33/59 - Circuits non adaptés à une application particulière de l'interrupteur et non prévus ailleurs, p.ex. pour assurer le fonctionnement de l'interrupteur en un point déterminé de la période du courant alternatif
• H01H 71/70 - Mécanismes de réarmement à moteur actionnés par un moteur électrique

Abrégé

Disclosed is an insulated gate bipolar transistor comprising at least following layers: a source layer of a first conductivity type, a base layer of a second conductivity type, wherein the source layer and the base layer electrically contact the source electrode, a drift layer of the first conductivity type and a collector layer of the second conductivity type arranged between the drift layer and the collector electrode and which electrically contacts the collector electrode. The insulated gate bipolar transistor further comprises at least two trench gate electrodes and at least one trench Schottky electrode and collection areas of the second conductivity type arranged at the electrodes bottom. The collection areas are located in the drift layer and are laterally separated from each other by the drift layer. The Schottky layer forms a Schottky contact to the collection area at a contact area.

Classes IPC  ?

• H01L 29/739 - Dispositifs du type transistor, c.à d. susceptibles de répondre en continu aux signaux de commande appliqués commandés par effet de champ
• H01L 29/06 - Corps semi-conducteurs caractérisés par les formes, les dimensions relatives, ou les dispositions des régions semi-conductrices
• H01L 29/417 - Electrodes caractérisées par leur forme, leurs dimensions relatives ou leur disposition relative transportant le courant à redresser, à amplifier ou à commuter
• H01L 29/40 - Electrodes
• H01L 29/872 - Diodes Schottky

Abrégé

The present disclosure relates to a coil block for supporting at least one coil winding in an electrical transformer, wherein the at least one coil winding is arranged concentrically about a longitudinal axis, the coil block comprising: a first element having at least one supporting surface for contacting the at least one coil winding and a first clamping surface; and a second element having a fastening means and a second clamping surface for contacting the first clamping surface, wherein the fastening means restricts rotation of the coil block about an axis parallel to the longitudinal axis of the at least one coil winding, and wherein the first clamping surface is a recess configured for accepting the second element, wherein the recess extends in a radial direction perpendicular to the longitudinal axis such that rotation of the second element with respect to the first element is restricted.

Classes IPC  ?

• H01F 27/30 - Fixation ou serrage de bobines, d'enroulements ou de parties de ceux-ci entre eux; Fixation ou montage des bobines ou enroulements sur le noyau, dans l'enveloppe ou sur un autre support
• H01F 27/32 - Isolation des bobines, des enroulements, ou de leurs éléments

Abrégé

A static electric induction system (10) comprising a heat generating electric component (24); a dielectric cooling fluid (14); a cooling passage structure (44) along the electric component (24); and a pump arrangement (20) arranged to alternatingly be controlled in a first mode (74) and in a second mode (80), wherein in the first mode (74), the pump arrangement (20) pumps the cooling fluid (14) to be driven through the cooling passage structure (44) in a forward direction (76) to cool the electric component (24), and wherein in the second mode (80), the pump arrangement (20) pumps the cooling fluid (14) to be driven through the cooling passage structure (44) in a reverse direction (82), opposite to the forward direction (76), to cool the electric component (24). A method of controlling a static electric induction system (10) is also provided.

Classes IPC  ?

• H05B 6/06 - Commande, p.ex. de la température, de la puissance
• H05B 6/10 - Appareils de chauffage par induction, autres que des fours, pour des applications spécifiques
• H05B 6/42 - Refroidissement des bobines
• H01F 27/12 - Refroidissement par huile
• H01F 27/10 - Refroidissement par liquide

Abrégé

An insulation assembly for use in a transformer, a transformer assembly for use in a transformer, and a dry type transformer are provided. The insulation assembly (3) comprises a plurality of tubular insulation barriers (31) adapted to be arranged around an inner coil (11) of the transformer (1) to electrically isolate the inner coil (11) from an outer coil (12) of the transformer (1), each pair of adjacent tubular insulation barriers (31) being separated by a gap (32); and an air blocking element (33) arranged in at least one gap (32) between the plurality of tubular insulation barriers (31) to at least partially block an air flow from passing through the at least one gap (32). The air blocking element (33) is provided in at least one gap (32) between the tubular insulation barriers (31) so as to block the cool air from passing through the at least one gap (32). In this way, more cool air may pass through gas channels (14, 15) near to the inner and outer coils (11, 12) and take way more heat generated by the transformer (1), improving the cooling efficiency of the transformer (1).

Classes IPC  ?

• H01F 27/08 - Refroidissement; Ventilation

Abrégé

A method of monitoring condition of a modular multilevel converter, wherein the modular multilevel converter comprises submodules having a capacitor and controllable switches. The method comprising selecting a submodule, lowering the voltage of the capacitor of the selected submodule to a desired value, and performing measurements on at least one controllable switch of the selected sub-module.

Classes IPC  ?

• H02M 7/483 - Convertisseurs munis de sorties pouvant chacune avoir plus de deux niveaux de tension
• H02M 1/32 - Moyens pour protéger les convertisseurs autrement que par mise hors circuit automatique

Abrégé

The present disclosure relates to an insulator for electrically insulating an electrical conductor. The insulator comprises a roll defining a central longitudinal through hole along a longitudinal axis of the insulator. The through hole is arranged for allowing an electrical conductor to pass there through. The insulator also comprises at least one shed (2) arranged on an outer surface of the roll. The shed comprises a shed tip (10) having an outer non-flat curvature (11) defined by a plurality of different radii of curvature and comprising a most distal point of the shed. An end radius of curvature (R) at the most distal point of the curvature is larger than a first radius of curvature (r1) at one side of the most distal point and a second radius of curvature (r2) at the other side of the most distal point.

Classes IPC  ?

• H01B 17/ -

Abrégé

A telescopic electric conductor (16) comprising an electrically conductive first tube (20) having a longitudinal axis (24); an electrically conductive second tube (22) movable relative to the first tube (20) along the longitudinal axis (24) while being at least partly received within the first tube (20); and an electrically conductive flexible element (40) arranged inside the first tube (20), the flexible element (40) being mechanically and electrically connected to the first tube (20) and to the second tube (22), and the flexible element (40) being arranged to elastically deform along the longitudinal axis (24). A high voltage arrangement (10) comprising a telescopic electric conductor (16) is also provided.

Classes IPC  ?

• H02B 1/54 - Dispositifs ou installations antisismiques
• H01B 5/00 - Conducteurs ou corps conducteurs non isolés caractérisés par la forme
• H02B 5/00 - Postes de transformation d'extérieur; Postes de transformation comportant des installations d'intérieur et d'extérieur
• H02G 5/02 - Installations ouvertes
• H01R 41/00 - Collecteurs de courant non rotatifs pour maintenir un contact entre les parties fixe et mobile d'un circuit électrique
• H02G 11/00 - Installations de câbles ou de lignes électriques entre deux pièces en mouvement relatif
• H01R 4/60 - Connexions entre ou avec des conducteurs tubulaires
• H02G 5/00 - Installations de barres omnibus

Abrégé

The present invention relates to a method and device for controlling operating of a switching device in a power system comprising a power source connected with a load in a three- phase configuration. There is coupling between at least two phases of the load. Voltage measurements for the three phases are obtained at source side. Closing angles of gap voltage for each pole of the switching device are estimated based on a switching criteria, a switching sequence and the measured voltages. Here, closing angle for each pole is estimated according to one or more of phase angles of voltages measured in a corresponding phase, phase difference between voltages measured in two phases, and a gap voltage parameter. A signal for the switching device is generated based on the estimated closing angles such that it operates according to the switching criteria and switching sequence, while minimizing possibility of switching transients.

Classes IPC  ?

• H01H 9/56 - Circuits non adaptés à une application particulière du dispositif de commutation non prévus ailleurs pour assurer le fonctionnement de l'interrupteur en un point déterminé de la période du courant alternatif
• H01H 33/59 - Circuits non adaptés à une application particulière de l'interrupteur et non prévus ailleurs, p.ex. pour assurer le fonctionnement de l'interrupteur en un point déterminé de la période du courant alternatif
• H01H 7/16 - Dispositifs assurant le fonctionnement de l'interrupteur en un point déterminé d'une période de courant alternatif
• H01H 11/00 - Appareillages ou procédés spécialement adaptés à la fabrication d'interrupteurs électriques
• H01H 71/12 - Mécanismes de déclenchement automatique avec ou sans déclenchement manuel
• H02H 9/00 - Circuits de protection de sécurité pour limiter l'excès de courant ou de tension sans déconnexion

Abrégé

11), a first conductor (16) interconnecting a first end of the string of switches with a first end of the string of capacitors, a second conductor (18) interconnecting a second end of the string of switches with a second end of the string of capacitors, a first string of components connected between the first end of the string of switches and the first end of the string of capacitors and a second string of components connected between the second end of the string of switches and the second end of the string of capacitors, wherein the first string of components comprises at least one snubber component (20, 22) for the first switch (S1) and the second string of components comprises at least one snubber component (24, 26) for the second switch (S2).

Classes IPC  ?

• H02M 1/34 - Circuits d'amortissement
• H02M 7/483 - Convertisseurs munis de sorties pouvant chacune avoir plus de deux niveaux de tension

Abrégé

A method is provided for detecting an anomalous frequency response analysis (FRA) test of a transformer. The method uses frequency response analysis to measure voltage amplitudes and frequencies in one winding of the transformer which result from an AC voltage applied to another winding of the transformer. Two statistical distributions are generated from the measured data and the statistical distributions are combined such that one distribution defines one axis, the other distribution defines another axis, and the probabilities of the distributions defines another axis.

Classes IPC  ?

• G01R 31/62 - Test de transformateurs

Abrégé

A breather device (1) for dehumidifying air to be supplied into an expansion vessel (103) of a power electrical apparatus (100), said breather device comprising an air demoisturizer unit (2) including one or more tanks (2) having an internal volume (20) accommodating a moisture absorbing substance and being adapted to be in fluid-dynamic communication with the external environment and with said expansion vessel. The breather device comprises one or more capacitive electric arrangements (10) accommodated in said one or more tanks (2). Each capacitive electric arrangement comprises first and second electrodes (11, 12) arranged spaced one from another in the internal volume (20) of a corresponding tank (2) and a quantity of said moisture absorbing substance between said first and second electrodes. The breather device breather device further comprises or is operatively coupleable with a detection device (50) electrically connectable with the capacitive electric arrangement of a tank and adapted to provide at least first measurement data (C) indicative of the equivalent capacitance of said capacitive electric arrangement.

Classes IPC  ?

• H01F 27/14 - Chambres d'expansion; Conservateurs d'huile; Matelas de gaz; Dispositions pour la purification, le séchage ou le remplissage
• B01D 53/04 - SÉPARATION Épuration chimique ou biologique des gaz résiduaires, p.ex. gaz d'échappement des moteurs à combustion, fumées, vapeurs, gaz de combustion ou aérosols par adsorption, p.ex. chromatographie préparatoire en phase gazeuse avec adsorbants fixes
• B01D 53/26 - Séchage des gaz ou vapeurs

Abrégé

An insulation member for being arranged adjacent to a transformer coil is provided. The insulation member comprises a flat base comprising a first half and a second half defined along a symmetry plane and a plurality of discrete spacers projecting from the plane of the base. The spacers are attached to the first and second halves for allowing a cooling fluid to circulate between the coil and the flat base. The first half comprises at least four zones, each zone having spacers arranged according to a predetermined orientation with respect to an orientation axis. The orientation of spacers between adjacent zones is different. The spacers at a first zone are oriented at an angle of between (120 – 150) degrees, in a second zone at between (80 – 100) degrees, in a third zone at between (30).

Classes IPC  ?

• H01F 27/32 - Isolation des bobines, des enroulements, ou de leurs éléments