GE ENERGY POWER CONVERSION TECHNOLOGY LIMITED (Royaume‑Uni)
Inventeur(s)
El Jihad, Hamza
Savarit, Elise
Siala, Sami
Abrégé
Method of control of a polyphase power converter driven by an algorithm of the pulse width modulation type, in which a control parameter comprising a drive setpoint value or a pulse duration associated with a value of drive setpoint of at least one phase, situated in a non-linearity zone of a chart, is modified (42, 45, 46) by modifying the value of said parameter so that it is in a linearity zone of the chart. The control parameter of each of the phases is modified in the same manner.
H02M 7/5395 - 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 avec commande automatique de la forme d'onde ou de la fréquence de sortie par modulation de largeur d'impulsions
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
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
2.
POWER CONVERTER SUBMODULE WITH A SHORT-CIRCUIT DEVICE AND POWER CONVERTER HAVING SAME
GE ENERGY POWER CONVERSION TECHNOLOGY LTD (Royaume‑Uni)
Inventeur(s)
Geske, Martin
Janning, Joerg
Brueckner, Thomas
Jakob, Roland
Abrégé
A short-circuit device and a protection method for a submodule (12) for a power converter (8, 9) are provided wherein the submodule comprises a bridge circuit (21) having at least one power semiconductor branch (23, 24) extending between a first and a second DC voltage node (26, 27) and having at least one controllable power semiconductor switch (T1-T4) disposed therein to which a freewheeling diode (D1-D4) is connected in anti-parallel, and a capacitor (C, 22) connected in parallel to the bridge circuit (21). The short-circuit device (30) comprises at least one selected of the freewheeling diodes (D1-D4) anti-parallel to the power semiconductor switches (T1-T4) of the bridge circuit (21), wherein the at least one selected freewheeling diode (D1-D4) is manufactured in press pack design and rated such that, when a fault occurs in the submodule (12), the at least one selected freewheeling diode (D1-D4) breaks down due to the fault conditions and provides a durable, stable, low-impedance short circuit path (33) between a first and a second AC voltage connection (28, 29) of the submodule (12).
H02M 1/32 - Moyens pour protéger les convertisseurs autrement que par mise hors circuit automatique
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
GE ENERGY POWER CONVERSION TECHNOLOGY LTD (Royaume‑Uni)
Inventeur(s)
Long, Teng
Wood, Stephen
Mupambireyi, Ushindibaba
Abrégé
A power distribution system is described. The system includes a main ac busbar (42) and an emergency ac busbar (56). A hybrid drive system (32) includes an induction electrical machine (34) and a prime mover (36), the rotor of the electrical machine and the driving end of the prime mover being mechanically coupled to a load (40), e.g., by means of a mechanical linkage such as a gearbox (38). The system includes a first active rectifier/inverter (46) having ac input terminals electrically connected to the main ac busbar (42), and dc output terminals. The system includes a second active rectifier/inverter (48) having dc input terminals electrically connected to the dc output of the first active rectifier/inverter (46) by a dc link (50), and ac output terminals electrically connected to the induction electrical machine (34). A blackout restart system (54) includes a rectifier having ac input terminals selectively electrically connectable to the emergency ac busbar (56) and dc output terminals selectively electrically connectable to the de link (50).
GE ENERGY POWER CONVERSION TECHNOLOGY LIMITED (Royaume‑Uni)
Inventeur(s)
Wagoner, Robert Gregory
Smith, David
Abrégé
Provided is a system for regulating temperature change of semiconductor components within a converter. The system includes a temperature regulator in communication with at least one semiconductor within the converter and a power source, the temperature regulator comprising a controller. Also included is a peak detector in communication with at least one of the semiconductors and configured to identify a maximum temperature of each semiconductor when the semiconductor conducts high current.
GE ENERGY POWER CONVERSION TECHNOLOGY LTD (Royaume‑Uni)
Inventeur(s)
Salter, Benjamin Guy
Eugene, Joseph Christy
Le Flem, Graham Derek
Abrégé
A stator (12) for an electrical machine (e.g., a motor or generator) is described. The stator includes a stator core (20) consisting of a plurality of axially adjacent generally annular laminations (1). The stator (12) has axially extending stator teeth between adjacent pairs of which are formed axially extending stator slots for receiving conductors of a stator winding. At least one of the stator teeth includes an axially extending cooling passageway (36) through which a cooling fluid flows in use. The electrical machine can includes means for circulating cooling fluid through the cooling passageway(s) (36) to cool the stacked laminations (1) and means for circulating air around the stator along an air cooling circuit where the circulated air is cooled by the stator laminations (1) and there is no need for a separate heat exchanger.
GE ENERGY POWER CONVERSION TECHNOLOGY LTD (Royaume‑Uni)
Inventeur(s)
Nies, Jacob Johannes
Abrégé
Provided is a control method and a control system for controlling the insertion of a plurality of magnets within an electrical machine including a stator and a rotor which rotates in relation to the stator around a rotary axis, the control system has plurality of sensors which continuously sense an air gap between the rotor and the stator, an encoder which continuously detects an angular position of the rotor, and a processor which receives data from the sensors and the encoder and determines in real-time an insertion order for inserting the plurality of magnets in a surface of the rotor and applies a feedback loop while performing the insertion process to adjust the insertion order based on changes in the data received.
H02K 15/03 - Procédés ou appareils spécialement adaptés à la fabrication, l'assemblage, l'entretien ou la réparation des machines dynamo-électriques des corps statoriques ou rotoriques comportant des aimants permanents
G05D 3/12 - Commande de la position ou de la direction utilisant la contre-réaction
7.
CIRCUIT ARRANGEMENT AND METHOD FOR GATE-CONTROLLED POWER SEMICONDUCTOR DEVICES
GE ENERGY POWER CONVERSION TECHNOLOGY LTD (Royaume‑Uni)
Inventeur(s)
Brueckner, Thomas
Jakob, Roland
Abrégé
A switch module (11) is provided and includes a collector connection (18), an emitter connection (19), and a gate connection (21). The switch module (11) includes a plurality of parallel connected switching elements (17a, 17b, ..., 17m), e.g., IGBTs, each having a collector electrode (22) electrically connected to the collector connection (18), an emitter electrode (23) electrically connected to the emitter connection (19), and a gate electrode (24) electrically connected to the gate connection (21). A fault protection device (26) is operatively electrically connected between the gate connection (21) and the switching elements (17a, 17b, ..., 17m) and comprises passive electrical components (e.g., first resistances 36a, 36b, ..., 36m and second resistances 38a, 38b, ..., 38n) which are selected such that in the event of a fault in at least one of the plurality of switching elements, a gate-emitter voltage is provided to the gate electrodes (24) of non-faulty switching elements in a passive manner. The applied gate-emitter voltage is sufficient to switch at least some of the non-faulty switching elements to a conducting state or to maintain them in a conducting state, e.g., a gate-emitter voltage that exceeds the voltage threshold of the switching elements is applied to the gate electrodes (24) of the non-faulty switching elements.
H03K 17/00 - Commutation ou ouverture de porte électronique, c. à d. par d'autres moyens que la fermeture et l'ouverture de contacts
H02M 1/32 - Moyens pour protéger les convertisseurs autrement que par mise hors circuit automatique
H03K 17/56 - Commutation ou ouverture de porte électronique, c. à d. par d'autres moyens que la fermeture et l'ouverture de contacts caractérisée par l'utilisation de composants spécifiés par l'utilisation, comme éléments actifs, de dispositifs à semi-conducteurs
H05K 10/00 - Dispositions pour améliorer la sécurité de fonctionnement d'un équipement électronique, p.ex. en prévoyant une unité de réserve similaire
GE ENERGY POWER CONVERSION TECHNOLOGY LTD (Royaume‑Uni)
Inventeur(s)
Yuan, Zhihui
Schroeder, Stefan
Chen, Qingyun
Shen, Jie
Han, Nora Cheng-Huei
Abrégé
An electrical circuit for a multilevel power converter has switching devices coupled to electrically conductive elements. Flying capacitors are coupled to two adjacent electically conductive elements. A processing device includes a model of the circuit. The processing device selects based on the model of the circuit a possible switching state of the circuit from a plurality of possible switching states. Each possible switching state has a voltage level that corresponds to a commanded voltage level for the at least one AC terminal. Each possible switching state defines a switching state of each switching device. Each switching state has a corresponding charging state. The processing device selects based on the model of the circuit and on the selected possible switching state, a possible charging state. Each possible charging state defines a charging state of each flying capacitor. The processing device sets the switching state based on the selected charging state.
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
G05B 17/02 - Systèmes impliquant l'usage de modèles ou de simulateurs desdits systèmes électriques
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
9.
SYSTEMS AND METHODS TO OPTIMIZE ACTIVE CURRENT SHARING OF PARALLEL POWER CONVERTERS
GE ENERGY POWER CONVERSION TECHNOLOGY LTD (Royaume‑Uni)
Inventeur(s)
Basic, Duro
Giroux, Mathieu
Abrégé
Provided is an approach for active control of cross currents flowing among multiple paralleled converters. Control of cross currents is achieved by using at least one proportional-integral (PI) controller and at least one resonant controller to target several selected dominant harmonics with infinite gains to ensure elimination of targeted harmonic cross currents in steady state. The cross currents are decomposed by into (1) common mode and differential mode components or (2) current phase domain components and each component is suppressed to a value approximately near zero using the controller. Also provided is a device comprises instructions, that, when executed by a processor, cause the processor to perform operations, which regulate and suppress cross current within a power system.
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
H02M 1/12 - Dispositions de réduction des harmoniques d'une entrée ou d'une sortie en courant alternatif
H02M 11/00 - Systèmes de transformation de puissance électrique non couverts par les autres groupes de la présente sous-classe
GE ENERGY POWER CONVERSION TECHNOLOGY LIMITED (Royaume‑Uni)
Inventeur(s)
Tenca, Pierluigi
Sihler, Christof Martin
Abrégé
A DC power system features multiple energy sources providing power to several loads via a shared DC bus, which contains positive and negative rails. This bus connects the energy sources and loads and is composed of at least two DC bus subsections with transfer capabilities. A DC bus separator is placed between these subsections, containing positive and negative rail controllable switches linked to respective positive and negative rail inductors for normal current flow. Upon detecting a fault on either the positive rail or the negative rail, the respective positive or negative controllable switch breaks the current path. Moreover, the separator includes positive and negative rail diodes connected in parallel to the respective positive and negative rail inductors, establishing circulating current paths to dissipate inductor currents when the corresponding switches are turned off. The system enables effective power transfer and fault protection.
H02J 1/12 - Fonctionnement de générateurs à courant continu en parallèle avec des convertisseurs, p.ex. avec un redresseur à arc de mercure
H02H 7/26 - Protection sectionnelle de systèmes de câbles ou de lignes, p.ex. pour déconnecter une section dans laquelle un court-circuit, un défaut à la terre, ou une décharge d'arc se sont produits
11.
AN ELECTRIC MOTOR ROTOR OPTIMIZED FOR GREAT POWERS
GE ENERGY POWER CONVERSION TECHNOLOGY LTD (Royaume‑Uni)
Inventeur(s)
Billaud, Antoine
Mauffrey, Thibaut
Abrégé
This rotor for a high-speed electric motor of high power comprises, according to the rotor axis (A), a magnetic mass (10) surrounded on both sides by short-circuit rings (12), and crossed at several notches (18) by electrical conductors connecting the short- circuit rings (12) to form a squirrel cage. Each electrical conductor is formed of a single bar (14) having a trapezoidal section over its entire length.
GE ENERGY POWER CONVERSION TECHNOLOGY LIMITED (Royaume‑Uni)
Inventeur(s)
Tenca, Pierluigi
Sihler, Christof Martin
Abrégé
A direct current power system includes a common direct current (DC) bus configured to supply power to a plurality of loads. A plurality of alternating current (AC) to DC converter bridges supply DC power to the common CD bus. Each of the AC to DC converter bridges is connected to the common DC bus by at least one split DC link. The at least one split DC link includes a small capacitor connected across output terminals of the respective AC to DC converter bridge and at least one diode coupled between two terminals of the small capacitor and the large capacitor in a way to block an instantaneous current flow from the common DC bus to the respective AC to DC converter bridge in case of a fault of the AC to DC converter bridge.
H02J 1/12 - Fonctionnement de générateurs à courant continu en parallèle avec des convertisseurs, p.ex. avec un redresseur à arc de mercure
H02M 1/32 - Moyens pour protéger les convertisseurs autrement que par mise hors circuit automatique
H02M 7/04 - Transformation d'une puissance d'entrée en courant alternatif en une puissance de sortie en courant continu sans possibilité de réversibilité par convertisseurs statiques
13.
MAGNETIC MASS FOR ROTOR, ROTOR MANUFACTURING PROCESS AND CORRESPONDING ELECTRICAL MACHINE
GE ENERGY POWER CONVERSION TECHNOLOGY LTD (Royaume‑Uni)
Inventeur(s)
Bittermann, Mathieu
Le Flem, Graham Derek
Abrégé
The invention relates to a magnetic mass (23) of electric machine rotor extending along a longitudinal axis (X-X') and comprising a plurality of housings, each housing being able to receive a respective electrically conductive bar (28). The magnetic mass (23) further comprises, on at least one portion of its length along the longitudinal axis (X-X'), at least one opening extending radially from one of the housings (32) and opening outwards along a radial direction, substantially perpendicular to the longitudinal axis (X-X').
GE ENERGY POWER CONVERSION TECHNOLOGY LIMITED (Royaume‑Uni)
Inventeur(s)
Qu, Bo
Zhang, Yingqi
Shen, Jie
Chen, Kunlun
Zhang, Ying
Abrégé
Disclosed is a method used to control the operation of a converting device such that it can provide multi-level output voltage for loads. This method comprises at least the steps of: determine whether the load which the converter is providing electricity for is operating under the first condition or the second condition; generate the first pulse signal after determining that this load is operating under the first condition, select at least one of at least three different current paths, such that when the converter is selecting any of the current paths, it can provide output voltage at the same level; as well as generate the second pulse signal after determining that this load is operating under the second condition, such that the converter can perform the regular energy conversion operations. Disclosed are also an energy conversion system and a controller.
H02M 1/32 - Moyens pour protéger les convertisseurs autrement que par mise hors circuit automatique
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
15.
DC POWER TRANSMISSION SYSTEMS AND METHOD OF ASSEMBLING THE SAME
GE ENERGY POWER CONVERSION TECHNOLOGY LIMITED (Royaume‑Uni)
Inventeur(s)
Wijekoon, Piniwan Thiwanka Bandara
Sihler, Christof Martin
Schroeder, Stefan
Shen, Jie
Tenca, Pierluigi
Abrégé
A DC power transmission system is configured to generate an electric field including components substantially constant with respect to time and varying with time. The DC power transmission system includes an AC stage configured to receive AC electrical power. The AC stage includes a transformer including primary windings and secondary windings configured to be electromagnetically coupled to, and electrically isolated from, each other. The AC stage also includes an AC/AC converter having substantially no insulating features against the at least one substantially constant component of the electric field. The AC/AC converter is electrically coupled to the primary windings. The DC power transmission system also includes an AC/DC conversion stage positioned downstream of the AC stage. The AC/DC conversion stage includes an AC/DC rectifier configured to convert AC electrical power to DC electrical power without external control. The AC/DC rectifier is coupled to the secondary windings.
H02J 1/00 - Circuits pour réseaux principaux ou de distribution, à courant continu
H02J 5/00 - Circuits pour le transfert d'énergie électrique entre réseaux à courant alternatif et réseaux à courant continu
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 7/04 - Transformation d'une puissance d'entrée en courant alternatif en une puissance de sortie en courant continu sans possibilité de réversibilité par convertisseurs statiques
16.
BATTERY ENERGY STORAGE SYSTEM WITH ARC FLASH PROTECTION, ENERGY CONVERSION SYSTEM AND PROTECTION METHOD
GE ENERGY POWER CONVERSION TECHNOLOGY LTD (Royaume‑Uni)
Inventeur(s)
Roesner, Robert
Rytz, Christoph
Abrégé
A battery energy storage system (1) is disclosed, the battery energy storage system (1) comprising a rechargeable battery assembly (3) for storing and providing energy and a protection system (19) including an arc flash protection device (26, 26') to protect against risks due to arc flashes. The arc flash protection device (26, 26') comprises an overcurrent protection unit (32) which detects overcurrent conditions indicating arc flash conditions in case of a low impedance of the battery assembly (3) and an undervoltage protection unit (33) which detects undervoltage conditions indicating arc flash conditions in case of a low impedance of the battery assembly (3), wherein upon detecting the overcurrent conditions and/or the undervoltage conditions for a predetermined minimum time period, the arc flash protection device (26, 26') initiates protective measures to prevent further operation of the battery assembly (3). An energy conversion system (34) comprising such a battery energy storage system (1), which can be used for stationary and mobile energy supply or distribution applications, is also disclosed.
H02H 7/00 - 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
H02H 7/10 - 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 redresseurs
H02H 7/18 - 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 accumulateurs
H02J 7/00 - Circuits pour la charge ou la dépolarisation des batteries ou pour alimenter des charges par des batteries
GE ENERGY POWER CONVERSION TECHNOLOGY LTD (Royaume‑Uni)
Inventeur(s)
Zhang, Richard S.
Zhang, Fan
Chen, Kunlun
Schroeder, Stefan
Yuan, Zhihui
Shen, Jie
Abrégé
Provided is an apparatus, including a capacitor module having a plurality of connecting terminals and a plurality of switch elements. Each switch element has at least one switch terminal coupled to a corresponding connecting terminal, wherein the switch elements are configured for mutually exclusive operation via a control device.
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 1/44 - Circuits ou dispositions pour corriger les interférences électromagnétiques dans les convertisseurs ou les onduleurs
18.
BROKEN ROTOR BAR DETECTION BASED ON CURRENT SIGNATURE ANALYSIS OF AN ELECTRIC MACHINE
GE ENERGY POWER CONVERSION TECHNOLOGY LIMITED (Royaume‑Uni)
Inventeur(s)
Neti, Prabhakar
Grubic, Stefan
Zhang, Pinjia
Abrégé
A method for detection of rotor bar faults in an electric machine is provided. The method includes acquiring electrical signals from the electric machine that are representative of the operative condition of the machine. The symmetrical components from the electrical signals are eliminated by squaring an instantaneous value of each data point from the electrical signals and summing the squared values. The method further includes the step of eliminating discontinuities in the electrical signals by applying a window function to compute weighted representation of the squared values. Furthermore, the method includes the step of normalizing the weighted representation to obtain spectral information. The faults in the rotor bar are detected by analyzing the spectral information obtained after normalization.
GE ENERGY POWER CONVERSION TECHNOLOGY LIMITED (Royaume‑Uni)
Inventeur(s)
Schroeder, Stefan
Chen, Qingyun
Abrégé
A method of operating a flying capacitor multilevel converter having a direct current link and a plurality of phase legs each having a plurality of flying capacitors includes employing redundant states to balance flying capacitor voltages by charging or discharging flying capacitors. The redundant states are employed by obtaining a load current of the flying capacitor multilevel converter. If a load current value is lower than a threshold value then a capacitor current of a phase terminal capacitor is utilized to determine redundant states else a load current direction is utilized to determine the redundant states.
H02M 7/44 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant alternatif sans possibilité de réversibilité par convertisseurs statiques
H02P 27/06 - 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
GE ENERGY POWER CONVERSION TECHNOLOGY LIMITED (Royaume‑Uni)
Inventeur(s)
Garces, Luis Jose
Zhang, Richard S.
Harbourt, Cyrus David
Ritter, Allen Michael
Datta, Rajib
Abrégé
A power conversion system includes a first converter effectively connected in series to a second converter. Each converter has a plurality of output levels. A phase- shifted transformer is coupled to the converters. The phase-shifted transformer has a delta-wound winding and an open star winding. The first converter is coupled to the open star winding and the second converter is coupled to the delta winding. The open star winding is configured for direct connection to either of a load or the open star winding of a second phase-shifted transformer, having a delta winding connected to a third converter. One or more DC voltage sources are each connected to the first and second converters by a respective DC link capacitor. Each DC voltage source is connected to a common power grid by an isolated multiphase transformer winding.
H02M 7/44 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant alternatif sans possibilité de réversibilité par convertisseurs statiques
H02M 7/49 - Combinaison des formes de tension de sortie d'une pluralité de convertisseurs
H02M 1/12 - Dispositions de réduction des harmoniques d'une entrée ou d'une sortie en courant alternatif
21.
SHORT CIRCUIT PROTECTION CIRCUIT AND METHOD FOR INSULATED GATE BIPOLAR TRANSISTOR
GE ENERGY POWER CONVERSION TECHNOLOGY LIMITED (Royaume‑Uni)
Inventeur(s)
Wu, Tao
Zhang, Yingqi
Zhang, Fan
Abrégé
An assembly includes an insulated gate bipolar transistor (IGBT), a gate driver and a short-circuit protection circuit. The gate driver is adapted to supply voltage to a gate terminal the IGBT. The short-circuit protection circuit includes an IGBT short-circuit detector for determining whether the IGBT is short-circuited, and a supply voltage regulator for regulating the supply voltage in response to the IGBT short- circuit detector determining that the IGBT is short-circuited.
H03K 17/567 - Circuits caractérisés par l'utilisation d'au moins deux types de dispositifs à semi-conducteurs, p.ex. BIMOS, dispositifs composites tels que IGBT
H02H 7/20 - 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 équipement électronique
H02H 9/00 - Circuits de protection de sécurité pour limiter l'excès de courant ou de tension sans déconnexion
GE ENERGY POWER CONVERSION TECHNOLOGY LIMITED (Royaume‑Uni)
Inventeur(s)
Zhu, Yi
Zhang, Fan
Schroeder, Stefan
Shen, Jie
Zhang, Richard S.
Soua, Samir
Abrégé
A converter includes a first converter module and a second converter module coupled to the first converter module in a nested manner. Each of the first converter module and the second converter module includes a plurality of switch units. When the converter is operated to perform power conversion, at least two of the plurality of switch units is configured to be switched both in a complementary pattern and a non- complementary pattern.
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
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
H02P 27/06 - 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
23.
ROLLER BEARING SET AND CORRESPONDING ROTATING MACHINE
GE ENERGY POWER CONVERSION TECHNOLOGY LTD. (Royaume‑Uni)
Inventeur(s)
Delepine, Xavier
Lacour, Yves
Abrégé
This set of roller bearings, which is a bearing block for a rotating machine, comprises a primary angular contact bearing (16) with a primary external bushing (30), a primary internal bushing (32) and primary rolling elements (34), a secondary angular contact bearing (18) with a secondary external bushing (36), a secondary internal bushing (38) and secondary rolling elements (40), a chassis (20) on which are mounted the primary angular contact bearing and the secondary angular contact bearing. The primary external bushing and the secondary external bushing are positioned directly side-by-side on the chassis; by interposition of an intermediate body, whose axial stiffness is greater than that of the chassis (30) and that of the primary and secondary external bushings. Application to asynchronous motors, for example.
F16C 27/04 - Roulements à billes ou à rouleaux, p.ex. à organes de roulement élastiques
F16C 32/04 - Paliers non prévus ailleurs faisant usage de moyens de support magnétiques ou électriques
F16C 39/02 - Allégement de la charge appliquée aux paliers par moyens mécaniques
24.
HYDROKINETIC TURBINE GENERATOR COMPRISING A STATOR, A ROTOR, A FIRST MAGNETIC BEARING SUPPORT OF THE ROTOR AND A SECOND BEARING SUPPORT WITH ROTATING ELEMENT(S)
GE ENERGY POWER CONVERSION TECHNOLOGY LTD. (Royaume‑Uni)
Inventeur(s)
Duchene, Hugo
Cagnin, Philippe
Abrégé
This hydrokinetic turbine generator comprises a stator (12), a rotor (14), the rotor (14) being capable of being brought in rotation around an axis or rotation (X) by the flow of a liquid, and at least one support bearing (20A, 20B) of the rotor (14), the one or each first bearing (20A, 20B) comprising a magnetic statoric element (46A, 46B) joined to the stator (12) and magnetic rotoric element (48A, 48B) joined to the rotor (14). In addition, the hydrokinetic turbine generator also comprises at least one second support bearing (22A, 22B) of the rotor (14), the one or each second bearing (22A, 22B) comprising at least one rolling element (50).
GE ENERGY POWER CONVERSION TECHNOLOGY LTD. (Royaume‑Uni)
Inventeur(s)
Lambotte, Manea
Durantay, Lionel
Abrégé
The present electric motor comprises a stator (12) and a rotor (14) capable of rotating at speeds in excess of 8000 revolutions per minute, whereby the said rotor (14) comprises a magnetic body (18) carried by a rotating shaft (19) and with the magnetic body (18) defining an outer lateral surface (20). The motor is provided with a protective coating (28) on the outer lateral surface (20) of the magnetic body (18).
H02K 15/02 - Procédés ou appareils spécialement adaptés à la fabrication, l'assemblage, l'entretien ou la réparation des machines dynamo-électriques des corps statoriques ou rotoriques
H02K 1/22 - Parties tournantes du circuit magnétique
H02K 5/12 - Enveloppes ou enceintes caractérisées par leur configuration, leur forme ou leur construction spécialement adaptées à un fonctionnement dans un liquide ou dans un gaz
GE ENERGY POWER CONVERSION TECHNOLOGY LTD. (Royaume‑Uni)
Inventeur(s)
De Lepine, Xavier
Abrégé
This electrical machine, more specifically a motor (2) comprising a stator (6), a rotor (8), a first main bearing (12), suitable for supporting the rotor (8) with respect to the stator (6) in a main speed range and a first secondary bearing (16) suitable for supporting the rotor with respect to the stator should the first main bearing fail. The or each secondary bearing (16) is a passive electrodynamic bearing comprising at least one permanent magnet and a mobile electrically conducting element. Application to electrical machines, in particular to asynchronous or synchronous motors.
F16C 32/04 - Paliers non prévus ailleurs faisant usage de moyens de support magnétiques ou électriques
H02K 7/09 - Association structurelle avec des paliers avec des paliers magnétiques
27.
WATER CURRENT TURBINE ROTOR COMPRISING AT LEAST ONE BLADE THAT CAN ROTATE ABOUT A RADIAL AXIS AND MEANS FOR LIMITING THE ROTATIONAL MOVEMENT OF SAID BLADE, AND WATER CURRENT TURBI NE COMPRISING SUCH A ROTOR
GE ENERGY POWER CONVERSION TECHNOLOGY LTD. (Royaume‑Uni)
Inventeur(s)
Duchene, Hugo
Cagnin, Philippe
Girard-Pecarrere, Antoine
Abrégé
The invention relates to a rotor for a water current turbine, which can be rotated by a stream of liquid. The rotor comprises an inner ring, an outer ring and at least one blade (24) that extends between the inner ring and the outer ring along a radial direction (R), said inner and outer rings being centred on a single longitudinal axis (X). The rotor comprises at least one radial shaft (26) extending radially between the inner ring and the outer ring, and at least one blade (24) can rotate about its corresponding radial shaft (26). The rotor (14) also comprises means (28) for limiting the rotational movement of said at least one blade (24) about its corresponding radial shaft (26).
GE ENERGY POWER CONVERSION TECHNOLOGY LIMITED (Royaume‑Uni)
Inventeur(s)
Clark, Paul Eaton
Abrégé
The present invention provides a permanent magnet rotor arrangement for a rotating electrical machine including a rotor body (6) having an outer rim (4). A circumferential array of magnet carriers (8) is mounted to the rotor body (6) by fixing members (16) and support members (18) and is spaced apart from the rotor body (6) in the radial direction to define a series of axially gaps or spaces (20) which can optionally be used as passages for cooling air. At least one pole piece (10) made of permanent magnet material is located adjacent to a surface of each magnet carrier (8). The magnet carriers (8) and pole pieces (10) preferably have a laminated or divided construction to virtually eliminate eddy currents that may be particularly problematic in certain types and construction of electrical machine. The flux path between adjacent pole pieces (10) flows in the circumferential direction within the magnet carriers (8) and does not use the rotor body (6).
H02K 1/30 - Moyens de montage ou de fixation des parties magnétiques tournantes sur ou aux structures constituant le rotor utilisant des pièces intermédiaires, p.ex. des croisillons
GE ENERGY POWER CONVERSION TECHNOLOGY LIMITED (Royaume‑Uni)
Inventeur(s)
Bradley, Stuart Ian
Alabaster, David
Abrégé
An electrical machine comprises a first stator and a second stator spaced from the first stator, at least one of the first stator and the second stator including a guide arrangement. The electrical machine also includes a plurality of rotor elements located between the first stator and the second stator and cooperating with the guide arrangement for movement relative to the first stator and the second stator. Adjacent rotor elements cooperate with each other so that the rotor elements form a rotor and at least one of the rotor elements includes a coupling element to transfer force to or from the rotor. Each rotor element includes a first support surface which faces towards the first stator and defines a first air gap with the first stator, a second support surface which faces towards the second stator and defines a second air gap with the second stator, and one or more magnets mounted on each of the first and second support surfaces in the first and second air gaps.
GE ENERGY POWER CONVERSION TECHNOLOGY LIMITED (Royaume‑Uni)
Inventeur(s)
Clark, Paul Eaton
Abrégé
The present invention provides an improved single-layer coil (10) for a rotating or linear electrical machine. The coil (10) has a first endwinding (12) that is substantially parallel to a longitudinal axis LA of the coil and a second endwinding (14) that is bent away from, or towards, the longitudinal axis. The coil (10) therefore has differently shaped endwindings with one end (12) being 'straight' and the other end (14) being 'bent'.
H02K 3/04 - Enroulements caractérisés par la configuration, la forme ou le genre de construction du conducteur, p.ex. avec des conducteurs en barre
H02K 3/12 - Enroulements caractérisés par la configuration, la forme ou le genre de construction du conducteur, p.ex. avec des conducteurs en barre disposés dans des encoches
GE ENERGY POWER CONVERSION TECHNOLOGY LIMITED (Royaume‑Uni)
Inventeur(s)
Peters, David J.
Rondot, James Leonard
Abrégé
A synchronous motor system in which recovery due to a failed field excitation supply is achieved automatically without resort to, or by minimizing the length of time in asynchronous operation of the motor. A sensing system is deployed to provide a sensed signal that is caused by a failed field excitation supply to vary from a reference value by a predetermined amount. A control unit responds to detected failure by automatically changing a field winding system of the motor over from the failed field excitation supply to a standby field excitation supply. The standby supply can be shared by several synchronous motors.
H02K 19/12 - Moteurs synchrones pour courant polyphasé caractérisés par la disposition des enroulements d'excitation, p.ex. pour auto-excitation, compoundage ou changement du nombre de pôles
H02P 1/54 - Dispositions de démarrage de moteurs électriques ou de convertisseurs dynamo-électriques pour faire démarrer des machines dynamo- électriques ou des convertisseurs dynamo-électriques pour faire démarrer plusieurs moteurs dynamo-électriques
H02P 6/12 - Contrôle de la commutation; Indication d'un défaut de commutation