A differential protection device monitors a first object to be protected in an electrical energy supply network. The differential protection device has a measuring unit configured to acquire measurement values at one end of the first object to be protected, a communication unit configured to exchange measurement values with a differential protection device arranged at another end of the first object to be protected, the communication unit has a physical interface for transmitting and receiving the measurement values, and an evaluation unit configured to form a differential value and to generate a fault signal indicating a fault with regard to the first object to be protected if the differential value exceeds a predefined threshold value. Ideally, the differential protection device is configured to monitor further objects to be protected and to exchange respective further measurement values with regard to each further object to be protected.
H02H 3/30 - Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition, with or without subsequent reconnection responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at two spaced portions of a single system, e.g. at opposite ends of one line, at input and output of apparatus using pilot wires or other signalling channel
H02J 13/00 - Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
2.
ELECTROMAGNETIC DRIVE FOR A POWER CIRCUIT-BREAKER WITH A VACUUM INTERRUPTER
A drive unit is provided for a moving contact of a vacuum tube. The drive unit has a tube pin which is conductively connected to the moving contact, a drive which is connected to the tube pin, and a conductor bridge. The drive moves the tube pin. The conductor bridge is directly conductively connected to the tube pin and a stationary conductor and bridges a travel of the tube pin between a conductive switching state of the vacuum tube and a non-conductive switching state. A magnet drive is provided, which contains a first magnet element, which is connected to the tube pin, and a second magnet element. The two magnet elements are configured to build up a magnetic force between them when current is flowing through the vacuum tube and in this way generates a contact-pressure force of the moving contact onto a fixed contact of the vacuum tube.
A camera system for monitoring an installation, in particular switchgear, has at least one camera, a display device, a switchover device and a power supply which, in an active state, supplies the camera with power via the switchover device. The switchover device is configured to transmit an image signal from the camera automatically to either the display device or to an interface to which a computer can be connected. There is also described a method for monitoring an installation, in particular switchgear, by way of the camera system.
Examples of techniques for event prediction in a control communication network are disclosed. Aspects include determining state data associated with one or more devices associated with a control communication network, generating, by a machine learning model, a feature vector comprising a plurality of features extracted from the state data, and determining one or more event predictions associated with the control communication network based at least in part on the feature vector.
G05B 13/02 - Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion electric
G05B 13/04 - Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion electric involving the use of models or simulators
G05B 19/418 - Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control (DNC), flexible manufacturing systems (FMS), integrated manufacturing systems (IMS), computer integrated manufacturing (CIM)
H02J 13/00 - Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
5.
RADIATOR FOR COOLING A TRANSFORMER OR A CHOKE, UNIT INCLUDING A TRANSFORMER OR A CHOKE AND METHOD FOR PRODUCING A RADIATOR
87188366 ABSTRACT A radiator for cooling a transformer, preferably a power transformer, or a choke, includes a plurality of plate-shaped radiator elements which are disposed parallel to one another and through which a coolant can flow in parallel. At least one elastically deformable element is provided at least between two adjacent radiator elements and is constructed in such a way that it counteracts an expansion of the radiator elements perpendicular to the surface of the radiator elements. Plastic deformation of the walls of the radiator elements can be prevented by the elastically deformable elements. A unit including a transformer or a choke and a method for producing a radiator are also provided. Date Recue/Date Received 2020-11-12
H01F 27/14 - Expansion chambers; Oil conservators; Gas cushions; Arrangements for purifying, drying, or filling
F28D 1/03 - Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or mo with the heat-exchange conduits immersed in the body of fluid with plate-like or laminated conduits
F28F 3/00 - Plate-like or laminated elements; Assemblies of plate-like or laminated elements
A variable frequency drive system includes a power converter with a plurality of power cells supplying power to one or more output phases, each power cell having multiple switching devices incorporating semiconductor switches; a plurality of sensors monitoring values of the power converter; and a control system in communication with the power converter and controlling operation of the plurality of power cells, the control system comprising a processor configured via executable instructions to access a first reduced order model of the power converter; receive the values provided by the plurality of sensors; analyze the values in connection with the first reduced order model to determine one or more operating modes; and output one or more determined operating modes of the power converter.
H02M 7/00 - Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
H02M 7/525 - Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only with automatic control of output waveform or frequency
H02M 7/529 - Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only with automatic control of output waveform or frequency by pulse width modulation using digital control
H02M 7/5387 - Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration
H02M 7/539 - Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters with automatic control of output wave form or frequency
H02M 7/758 - Conversion of ac power input into dc power output; Conversion of dc power input into ac power output with possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only with automatic control of output waveform or frequency
7.
SYSTEM AND METHOD FOR PROTECTING AN ELECTRICAL LOAD OF A DRIVE SYSTEM
A drive system (500) includes a power converter (510) with power modules (312) supplying power to one or more output phases (A, B, C), a central control system (512) in communication with the power converter (510) and controlling operation of the power modules (312), wherein the central control system (512) comprises an advanced protection module (APM 514) configured via executable instructions to receive input data from an electrical load (520) operably coupled to the one or more output phases (A, B, C) utilizing power converter feedback from the electrical load (520), determine one or more operating conditions of the electrical load (520) based on the input data; and output one or more protection parameters based on a determined operating condition of the electrical load (520) for protecting the electrical load (520).
The invention relates to an electrical feedthrough (1) for a pressure housing (3). The electrical feedthrough (1) comprises two feedthrough elements (5, 6), which each run in a straight line along an element axis (5.1, 6.1) between a first element end portion (5.2, 6.2) and a second element end portion (5.3, 6.3) and the outer shape and dimensions of which are substantially the same, and a connection element (8), which is releasably connected to feedthrough elements (5, 6) arranged one on each of two opposite sides. The connection element (8) comprises at least one electrical connection conductor (25), and at least one feedthrough element (5, 6) comprises an electrical feedthrough conductor (22) for each connection conductor (25), each of which feedthrough conductors runs along the element axis (5.1, 6.1) of the feedthrough element (5, 6) and bears against the connection conductor (25).
The invention relates to a switchgear (1) with an optical monitoring system (20) for examining the switchgear switching position, wherein the switchgear (1) has at least one isolating switch (420), the at least one isolating switch (420) is accommodated in an encapsulated housing (400), the encapsulated housing (400) is arranged in an installation housing (3), and the encapsulated housing (400) has a first transparent window (410) in one region, wherein a fiber-optic system leads from an outer side of the installation housing (3) to the first transparent window (410).
H01H 9/16 - Indicators for switching condition, e.g. "on" or "off"
G02B 23/26 - Instruments for viewing the inside of hollow bodies, e.g. fibrescopes using light guides
H01H 33/64 - Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid wherein the break is in gas
10.
SWITCHGEAR WITH A MODULAR OPTICAL MONITORING SYSTEM
The invention relates to a switchgear (1) with a modular optical monitoring system (20) for examining the switchgear switching positions, wherein the switchgear (1) has at least one isolating switch (420), the at least one isolating switch (420) is accommodated in an encapsulated housing (400), the encapsulated housing (400) is arranged in an installation housing (3), and the encapsulated housing (400) has a first transparent window (410) in one region, wherein a fiber-optic system leads from an outer side of the installation housing (3) to the first transparent window (410).
H01H 9/16 - Indicators for switching condition, e.g. "on" or "off"
G02B 23/26 - Instruments for viewing the inside of hollow bodies, e.g. fibrescopes using light guides
H01H 33/64 - Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid wherein the break is in gas
11.
REDUCING INPUT HARMONIC DISTORTION IN A POWER SUPPLY
Provided are embodiments for a system for reducing input harmonic distortion of a power supply. The system includes a power source coupled to a power supply. The power supply includes an input stage that is configured to receive an input signal from the power- supply, wherein the input signal is received at known input frequency, and a converting stage that is operated to convert the input signal to an output signal, wherein the output signal has an output frequency. The power supply also includes an output stage that is operated to generate output power based on the output signal, and a controller that is configured to provide control signals to the output stage of the power supply to modify the output signal. Also provided are embodiments for a power supply and method for reducing input harmonic distortion of the power supply.
H02M 7/49 - Combination of the output voltage waveforms of a plurality of converters
H02M 7/5395 - Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters with automatic control of output wave form or frequency by pulse-width modulation
In a method for controlling a plurality of semiconductors that form a power converter, a protocol for controlling the plurality of semiconductors is transmitted via a signal line between a control unit and the semiconductors. Additionally transmitted via the signal line is a sign-of-life signal, wherein the semiconductors are switched off, when the sign-of life signal is absent, and the semiconductors of the power converter are switched using optimized pulse patterns.
H03K 17/0812 - Modifications for protecting switching circuit against overcurrent or overvoltage without feedback from the output circuit to the control circuit by measures taken in the control circuit
H03K 17/0412 - Modifications for accelerating switching without feedback from the output circuit to the control circuit by measures taken in the control circuit
13.
EXTENDED BRAKING WITH VARIABLE FREQUENCY DRIVE WITHOUT INPUT POWER
A variable frequency drive system (300) includes a power converter (310) with a plurality of power cells supplying power to one or more output phases (A, B, C), a main power source (320) for providing main input power to the power converter (310), an auxiliary power source (330) for providing auxiliary input power to the power converter (310), and a control system (314) in communication with the power converter (310) and controlling operation of the plurality of power cells, wherein the control system (314) comprises one or more processor(s) (315) configured via computer executable instructions to detect a main input voltage drop of the main power source (320) below a predefined power threshold, disconnect the main power source (320) in response to the main input voltage drop, and enable the auxiliary power source (330) to provide auxiliary input power to the power converter (310) in response to the main input voltage drop.
H02J 3/00 - Circuit arrangements for ac mains or ac distribution networks
H02J 9/06 - Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over
Disclosed is an improved electrical power conversion system for converting a high voltage (HV) from a HV electrical power supply to a low voltage, wherein the electrical power conversion system comprises: at least one power converter, and at least one RC network comprising a plurality of resistive components and a plurality of capacitive components electrically connected in series, wherein the at least one RC network is in series connection with the at least one power converter, and the at least one RC network and at least one power converter are arranged to be connected across a line potential of the HV electrical power supply.
H02M 5/04 - Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters
H05K 1/16 - Printed circuits incorporating printed electric components, e.g. printed resistor, capacitor, inductor
15.
FREQUENCY CONVERTER CABINET BODY AND FREQUENCY CONVERTER
The prevent invention provides a frequency changer cabinet and a frequency changer. The frequency changer cabinet comprises: a transformer cabinet used to accommodate a transformer, wherein a first air outlet is disposed at the top of the transformer cabinet, and a first air inlet is disposed at a side wall thereof; a power unit cabinet used to accommodate at least one power unit, wherein a second air inlet is disposed at a front side wall of the power unit cabinet, and a rear side of the power unit cabinet is connected to the transformer cabinet; wherein the transformer cabinet comprises a first air passage baffle and a second air passage baffle respectively disposed at an upper end and a lower end of a secondary coil, such that air entering from the power unit cabinet to the transformer cabinet can be directly sent to the secondary coil; and wherein air entering from the first air inlet can pass through a primary coil and the secondary coil, and then flow out of the transformer cabinet via the first air outlet, and air entering from the second air inlet can sequentially pass through respective power units and the secondary coil, and then flow out of the transformer cabinet via the first air outlet. The frequency changer cabinet and the frequency changer of the present application can reduce fan performanance requirements for frequency changers.
H05K 7/20 - Modifications to facilitate cooling, ventilating, or heating
H02M 1/00 - APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF - Details of apparatus for conversion
16.
CONTROL SYSTEM FOR MEDIUM VOLTAGE VARIABLE FREQUENCY DRIVE
A drive system (300) includes a plurality of power cells (312) supplying power to one or more output phases (A, B, C), each power cell (312) having multiple switching devices (315a-d) incorporating semiconductor switches, 5 and a control system (400) in communication with the plurality of power cells (312) and controlling operation of the plurality of power cells (312), wherein the control system (400) includes a system on chip (410) with one or more central processing units (412, 414) and a field programmable gate array (416) in communication with the one or more central processing units (412, 414).
H02M 7/49 - Combination of the output voltage waveforms of a plurality of converters
H02M 7/00 - Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
H02M 7/483 - Converters with outputs that each can have more than two voltage levels
H02M 1/00 - APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF - Details of apparatus for conversion
17.
CURRENT-MEASURING TRANSDUCER DEVICE HAVING A CURRENT-MEASURING TRANSDUCER AND METHOD FOR CALIBRATING A CURRENT-MEASURING TRANSDUCER
The invention relates to a current-measuring transducer device (10) having a current-measuring transducer (12) for measuring an electric current along a conduction path (14), the current-measuring transducer (12) having a magnetic-field-sensitive element (18) for converting the magnetic field resulting from the current flow along the conduction path (14) into at least one physical quantity and a measuring device (24) for measuring the physical quantity. According to the invention, the current-measuring transducer device (10) also has a coil assembly (26) for simulating the magnetic field resulting from the current flow along the conduction path (14), which coil assembly comprises at least one coil (28). The invention further relates to a method for calibrating a corresponding current-measuring transducer (12) and to a corresponding computer program product for carrying out the calibration method.
G01R 35/00 - Testing or calibrating of apparatus covered by the other groups of this subclass
G01R 35/02 - Testing or calibrating of apparatus covered by the other groups of this subclass of auxiliary devices, e.g. of instrument transformers according to prescribed transformation ratio, phase angle, or wattage rating
G01R 15/20 - Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using galvano-magnetic devices, e.g. Hall-effect devices
G01R 15/24 - Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using light-modulating devices
The invention relates to a modular power converter (1) with wide-bandgap semiconductors (2), in particular SiC semiconductors. The aim of the invention is to optimize the power converter with respect to the use of wide-bandgap semiconductors. This is achieved in that the modular power converter (1) has at least two base units (10). The base units (10) are connected together on the input side, and one base unit has an input circuit (11) on the input side and an output circuit (12) on the output side. The input circuit (11) and the output circuit (12) are each formed by the wide-bandgap semiconductors (2) which are arranged in a B6-bridge circuit, wherein an intermediate circuit capacitor (3) is connected in parallel with the input circuit (11) and with the output circuit (12), thus interconnecting the intermediate circuits of the input circuit (11) and the output circuit (12) in order to form an intermediate circuit (13). The input circuits (11) of the base units (10) or a sub-quantity of the base units (10) are arranged in a series circuit, wherein at least one inductor (15) is arranged between each pair of input circuits (11). The invention additionally relates to a vehicle (100), in particular a rail vehicle, comprising such a modular power converter (1), said modular power converter (1) being part of the drive (101) of the vehicle (100).
H02M 7/5387 - Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration
B60L 15/00 - Methods, circuits or devices for controlling the propulsion of electrically-propelled vehicles, e.g. their traction-motor speed, to achieve a desired performance; Adaptation of control equipment on electrically-propelled vehicles for remote actuation from a stationary place, from alternative parts of the vehicle or from alternative vehicles of the same vehicle train
19.
METHOD, DEVICE AND COMPUTER PROGRAM FOR MANAGEMENT OF UNITS OF BULK MATERIAL
Method, device and computer program for managing units of bulk material of an ore mine with a throughput of a few tons of bulk material per minute, wherein a material property of each unit, in particular on a conveyor system, is determined, an entry for each unit containing the respective material property of the unit and the position of each unit are stored in a database, and additional includes at least one (i) determining a transport path downstream for the each unit based on the respective entry in the database, (ii) adapting the subsequent processing of each unit based on the material property of the unit, and creating a virtual model of the repository if a unit is supplied to a repository, where a position of each unit is stored, together with its respective material property, in the database.
The invention relates to a storage unit (11) for electrical energy and a method for monitoring a storage unit (11) of this kind. The storage unit (11) has at least one storage element (1) for the short-term storage of electrical energy, for example a battery or capacitor. A means (3) for detecting physical variables, more particularly a pressure (p) or temperature (T), in the direct surroundings of the storage element (1) is allocated to the storage element (1), wherein the means (3) is designed to detect the physical variable, more particularly to detect a change over time of the physical variable, wherein the means (3) for detecting the physical variable is designed to provide a signal if a predefinable change over time of the physical variable is exceeded. Use in an intermediate circuit capacitor in a rail vehicle is one advantageous use of the invention.
H01G 11/18 - Arrangements or processes for adjusting or protecting hybrid or EDL capacitors against thermal overloads, e.g. heating, cooling or ventilating
H01M 10/48 - Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
H02H 5/08 - Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection responsive to abnormal fluid pressure, liquid level or liquid displacement, e.g. Buchholz relays
H02H 7/16 - Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from norm for capacitors
H02H 7/18 - Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from norm for accumulators
21.
TURBINE EXHAUST CRACK MITIGATION USING PARTIAL COLLARS
An exhaust apparatus (10) for a gas turbine (1) includes an annular duct (12) with a plurality of struts (18) extending at least from an outer duct-wall (14) to an inner duct-wall (16) of the annular duct (12). Each strut (18) is encapsulated in a respective strut shield (20). An interface (22, 24) of the strut shield (20) with a respective duct-wall (14, 16) includes at least one collar (26) extending along a partial length of the perimeter of the strut shield (20) at the respective interface (22, 24). The collar (26) includes a first section (32) extending radially and being aligned with the strut shield (26), and a second section (34) oriented at an angle to the first section (32) and being aligned with the respective duct-wall (14, 16). The first section (32) is attached to the strut shield (20) along a first joint (42) and the second section (34) is attached to the respective duct-wall (14, 16) along a second joint (44). An intersection (40) of the first and second sections (32, 34) is formed by a smooth curve defined by a radius configured to distribute stresses at the respective interface (22, 24).
A sealed core-coil assembly includes a coil assembly having an inner coil with inner, outer, upper, and lower surfaces, and an outer coil with inner, outer, upper, and lower surfaces, a core assembly including a core window and core column of a magnetically-permeable material, the core column and core window having inner side surfaces, and an expandable sealing member including an inner cavity that is fillable or evacuatable. An expandable sealing member is provided between: one or more inner side surfaces of the core column and one or more inner surfaces of the inner coil, the outer surface of the inner coil and the inner surface of the outer coil, and between the upper and lower surfaces of the inner and outer coils and the inner side surfaces of the core window. Core-coil assemblies, sealing assemblies, and sealing methods are provided, as are numerous other aspects.
A shielded coil assembly (106, 108, 110) and a dry-type transformer (100) formed using the shielded coil assembly (106, 108, 110), comprising a coil (114) having an outer surface (202, 218a, 220a), an inner surface (204, 218b, 220b), an upper end surface (206, 218c, 220c) and a lower end surface (208, 218d, 220d) and a first insulating material (216) formed over the outer surface (202, 218a, 220a), inner surface (204, 218b, 220b), upper end surface (206, 218c, 220c) and lower end surface (208, 218d, 220d) of the coil (114); and a conductive shield (210) comprising a conductive paint applied along the first insulating material (216) so that the conductive paint extends over at least a portion of each of the outer surface (202, 218a, 220a), inner surface (204, 218b, 220b), upper end surface (206, 218c, 220c), and lower end surface (208, 218d, 220d) of the coil (114).
H01F 27/32 - Insulating of coils, windings, or parts thereof
H01F 41/04 - Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils or magnets for manufacturing coils
24.
METHOD AND ARRAGEMENT FOR ACTUATING A METAL-OXIDE-SEMICONDUCTOR FIELD-EFFECT TRANSISTOR
The invention relates to a method and an actuating arrangement for controlling a MOSFET, in particular wide-bandgap MOSFET. A change of an actuating variable, which actuates the MOSFET as a function of an operating characteristic variable that influences the switching behavior of the MOSFET is stored in a characteristic block. The change counteracts a reference actuating value of the actuating variable. An actual value of the operating characteristic variable is determined during operation of the MOSFET. The actuating variable is changed from the reference actuating value as a function of the actual value commensurate with the change of the actuating variable stored in the characteristic block. The change stored in the characteristic block can include a change in the switch-on or switch-off voltage or gate resistance of the MOSFET as a function of the operating temperature or the operating voltage of the MOSFET.
In order to create a full variable shunt reactor having two magnetically controllable high-voltage throttles which is compact and at the same time can also provide capacitive reactive power, auxiliary windings are used which are inductively coupled to the high-voltage throttles. The auxiliary windings are connected to at least one capacitively acting component.
G05F 1/38 - Regulating voltage or current wherein the variable is actually regulated by the final control device is ac using magnetic devices having a controllable degree of saturation as final control devices combined with discharge tubes or semiconductor devices semiconductor devices only
H01F 29/14 - Variable transformers or inductances not covered by group with variable magnetic bias
H02J 3/14 - Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load by switching loads on to, or off from, network, e.g. progressively balanced loading
H02J 3/18 - Arrangements for adjusting, eliminating or compensating reactive power in networks
H02P 13/12 - Arrangements for controlling transformers, reactors or choke coils, for the purpose of obtaining a desired output by varying magnetic bias
26.
METHOD AND ARRANGEMENT FOR ACTUATING A METAL-OXIDE-SEMICONDUCTOR FIELD-EFFECT TRANSISTOR
The invention relates to a method and an actuation assembly (3) for actuating a MOSFET (1), in particular a MOSFET (1) based on a semiconductor with a wide band gap. According to the invention, a monitoring process is carried out to determine whether the body diode (2) of the MOSFET (1) is electrically conductive. If the body diode (2) is electrically conductive, the MOSFET (1) is activated, and if the body diode (2) is electrically blocking, the MOSFET is actuated on the basis of an actuation signal (S1).
H02M 1/08 - Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
H02M 3/158 - Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
H03K 17/082 - Modifications for protecting switching circuit against overcurrent or overvoltage by feedback from the output to the control circuit
H03K 17/16 - Modifications for eliminating interference voltages or currents
H02M 1/00 - APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF - Details of apparatus for conversion
27.
SYSTEM FOR CONTROLLING A COOLING UNIT OF A TRANSFORMER
The invention relates to a system (1) for controlling a cooling unit (3) of a transformer (2), more particularly a traction transformer of a rail vehicle (8) and a corresponding method for controlling a system (1) of this kind. The problem addressed is that of improving the efficiency and life of a transformer (2) having a cooling unit (3). To solve this problem, the system (1) according to the invention comprises a transformer (2), a cooling unit (3), which is configured to cool the transformer (2), and a control unit (4), which is configured to control the cooling unit (3) for cooling the transformer (2). The control unit (4) is configured to control the cooling unit (3) using measurement data representing at least one state of the system (1) and/or using environmental data in expectation of a change in the temperature of the transformer (2) as a result of the utilisation of the transformer (2) and/or as a result of environmental influences. This prevents the transformer (2) from overheating, thereby increasing the efficiency and life of the transformer (2).
H01F 27/42 - Circuits specially adapted for the purpose of modifying, or compensating for, electric characteristics of transformers, reactors or choke coils
28.
METHOD AND DEVICE FOR IDENTIFYING AN INTER-TURN SHORT CIRCUIT IN PARALLEL WINDINGS
The invention relates to a method for monitoring an electrical assembly (1) which comprises a plurality of electrical coils (L1, L2, L3) connected in parallel. In the method, the difference in current (?I1, ?I2, ?I3) between the current (I1, I2, I3) flowing through the coils and the mean value (lav) of the currents (I1, I2, I3) flowing through the coils is ascertained for each of the coils (L1, L2, L3) connected in parallel. The differences in current (?I1, ?I2, ?I3) are used to identify when an inter-turn short circuit occurs in one of the coils.
H02H 3/44 - Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition, with or without subsequent reconnection responsive to the rate of change of electrical quantities
H02H 3/04 - Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition, with or without subsequent reconnection - Details with warning or supervision in addition to disconnection, e.g. for indicating that protective apparatus has functioned
H02H 7/04 - Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from norm for transformers
87278243 ABSTRACT A capacitor bank (1) which has a plurality of capacitor units (C1 _ C12), in which each capacitor has a plurality of electrical capacitor elements (CE1 _ CEm), and the capacitor units (C1 _ C12) are divided into a plurality of groups of capacitor units (C1 _ C4, C5 _ C8, C9 _ C12). The arrangement has a plurality of group monitoring units (52, 64, 68), with one of the group monitoring units (52, 64, 68) associated with each group of capacitor units (C1 _ C4, C5 _ C8, C9 _ C12). At least one of the group monitoring units (52) is configured so that it monitors the respective group of capacitor units (C1 _ C4) for a failure of a capacitor element (CE1 _ CEm) in one of the capacitor units (C1 _ C4) of the group and, when such a failure of a capacitor element (CE3) is detected, transmits data which describe this failure of the capacitor element (CE3) to a monitoring receiver (72). Date Recue/Date Received 2020-12-07
H01G 9/26 - Structural combinations of electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices with each other
H01G 11/10 - Multiple hybrid or EDL capacitors, e.g. arrays or modules
H01G 11/16 - Arrangements or processes for adjusting or protecting hybrid or EDL capacitors against electric overloads, e.g. including fuses
G01R 31/36 - Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
H01G 2/16 - Protection against electric or thermal overload with fusing elements
H01G 4/38 - Multiple capacitors, i.e. structural combinations of fixed capacitors
H01G 4/40 - Structural combinations of fixed capacitors with other electric elements not covered by this subclass, the structure mainly consisting of a capacitor, e.g. RC combinations
H01G 9/00 - Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
H01G 9/28 - Structural combinations of electrolytic capacitors, rectifiers, detectors, switching devices with other electric components not covered by this subclass
H02H 7/16 - Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from norm for capacitors
A method of controlling a combustion system of a gas turbine engine (10). The gas turbine engine (10) has a combustor (28) with a primary combustion zone (110), of which a condition in the primary combustion zone (110) is defined by a primary zone control parameter. The method comprises controlling the primary zone control parameter (PZCP) to be substantially constant value over a range of values of compressor inlet air temperature (T1).
A compressor aerofoil (70) for a turbine engine. The compressor aerofoil (70) comprises a tip portion (100) which extends in a first direction R b from a main body portion (102). The main body portion (102) is defined by a suction surface wall (88) having a suction surface (89) and a pressure surface wall (90) having a pressure surface (91). The suction surface wall (88) and the pressure surface wall (90) meet at a leading edge (76) and a trailing edge (78). The tip portion (100) comprises a tip wall (106) which extends continuously along a camber line (107) of the aerofoil, the camber line (107) extending from the aerofoil leading edge (76) to the aerofoil trailing edge (78). A shoulder (104, 105) is provided on each of the suction surface wall (88) and pressure surface wall (90). A transition region (108, 109) tapers from each of the shoulders (104, 105) in a direction towards the tip wall (106). The tip wall (106) defines a squealer (110) with a tip surface (118) which increases in width w s from the leading edge (76) to a point of maximum width, and then decreases in width w s all the way to the trailing edge (78).
The invention relates to a grid influencing system of an electricity grid (4), comprising a current-conducting grid influencing component (6) and a short-circuiting device (8) that includes a circuit breaker (10). The invention in characterized in that the circuit breaker (10) is a vacuum circuit breaker having a vacuum circuit breaker tube that includes an at least partly integrated pre-arcing unit (12) for actively generating an arc (14) between two contacts (19, 34).
A tap changer assembly of a dry-type transformer. The tap changer assembly includes a first molding including multiple taps, a semi-conductive coating applied to the first molding, a conductive shield provided overtop some of the semi-conductive coating, a grounding member comprising a ring of bosses interconnected by a grounding conductor connected to the conductive shield, a second molding applied over at least a portion of the conductive shield and the grounding conductor, the second molding forming a molded sealing surface, a conductive cover coupled to the ring of bosses; and a sealing member sealing a space between the molded sealing surface and the conductive cover. Dry-type transformers and methods of forming a tap changer assembly of a dry-type transformer are provided, as are numerous other aspects.
A transformer core for a dry-type transformer includes a laminated construction having several groups of stacked laminations that form a step-lap sequence of laminations. Each group in the step-lap sequence has a mean length different than an adjacent group in the step-lap sequence and has at least two identical laminations per group, wherein at least one group has at least four identical laminations. Methods of assembling a transformer core are also provided, as are other aspects.
The invention relates to a high-voltage transducer (1) having a housing (2), which physically encloses at least one electric measuring device (3) and an insulating gas (4), and to a method for measuring with the high-voltage transducer (1). The insulating gas (4) is clean air, via which electrical insulation in the housing (2) of the high-voltage transducer (1) is carried out.
A rotor shaft cap (300) for a gas turbine, comprising: a disk-shaped body (310) defining: a first axial face (312), a second axial face (314), and an outer radial face (316), the disk-shaped body (310) comprising: a first annular jaw (330) provided on the first axial face (312), the first annular jaw (330) comprising a plurality of teeth (332) projecting from the first axial face (312); a plurality of apertures (340) defined by the disk-shaped body (310), each aperture (342, 344, 346) of the plurality of apertures (340) extending through the disk-shaped body (310) along an axial direction (30).
A circuit arrangement and to a method for operating the circuit arrangement, particularly a circuit arrangement for the DC power supply of a plurality of parallel electrolysers, where the circuit arrangement has a rectifier which converts an input-side alternating voltage into an output-side first DC voltage. Each electrolyser is respectively connected in parallel to the output of the rectifier by a down converter converting the first DC voltage into a second DC voltage such that the second DC voltage drops over the electrolyser. Each of the down converters is controllable and/or regulatable in order to adapt the level of the second direct voltage.
The invention relates to a device (1) for reactive power compensation in a high-voltage network (17) comprising at least one phase conductor (16, 18, 19). A high-voltage connection (8) is provided for each phase of the high-voltage network. Each high-voltage connection (8) is connected to a first high-voltage winding (5) which surrounds a first core portion (3) and to a second high-voltage winding (6) which surrounds the second core portion (4). The core portions (3, 4) are part of a closed magnetic circuit. The low-voltage ends of each high-voltage winding can be connected to at least one saturation switching branch (10, 11) which is designed to saturate the core portions (3, 4) and has actuatable power semiconductor switches (20, 21, 22, 23). A control unit (26) is also provided for actuating the power semiconductor switches (20, 21, 22, 23). In order to manufacture the device as cheaply as possible, each saturation switching branch (10, 11) has at least one two-pole submodule (12) having a bridge circuit which has power semiconductor switches (20, 21, 22, 23) and a DC voltage source (24) so that, depending on the actuation of the power semiconductor switches (20, 21, 22, 23), the DC voltage source (24) can either be connected in series to at least one high-voltage winding (5, 6) or can be bridged.
85000022 Abstract The invention relates to a method for controlling the operation of an energy supply network by means of a network control system. For providing system services reliably, it is proposed that measured values indicating an electrical state of the energy supply network are recorded with a local control device of a distribution network, wherein a deviation of the present operational state from a required operational state is determined and control measures are defined for restoring the required operational state. Control data are transmitted to the control device. Appropriate control commands are determined for the devices of the distribution network. Estimated control data are defined and the communication connection to the network control system is monitored. In the event of a fault in the communication connection, the control commands are defined using the estimated control data instead of the received control data. Date Recue/Date Received 2020-05-19
H02J 13/00 - Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
G05B 13/02 - Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion electric
40.
METHODS, APPARATUS AND SYSTEMS FOR DRY-TYPE TRANSFORMERS
In some embodiments, a connection bar is provided for connecting multiple high voltage coils of a dry-type transformer along a top or bottom of the dry-type transformer. The connection bar includes (1) an electrically insulating body having a plurality of openings, each opening sized to receive at least one of high voltage terminals of the transformer; (2) an electrical connection pathway within the electrically insulating body configured to create a predetermined electrical connection between multiple high voltage coils of the transformer; (3) external connector terminals embedded within and extending from the electrically insulating body, the external connector terminals connected to the electrical connection pathway; and (4) a ground shield embedded within the electrically insulating body and configured to shield high voltage terminals of each high voltage coil of the transformer. Numerous other aspects are provided.
H01F 27/30 - Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support
The invention relates to a core for a transformer. Said core comprises a multiplicity of bent metal sheets bonded together to form a structure surrounding a core opening and forming the core. Said metal sheets comprise sheet ends not touching one another within the core, causing the core with said metal sheets to form at least one air gap at said sheet ends within the core or at a periphery of the core. Said air gap forms magnetic resistance that increases with the width of said air gap. This causes no-load losses. An object of the invention is to minimize those no-load losses in the transformers through the lowest possible magnetic resistances. A lacquer is provided which contains magnetic particles. Said lacquer impregnates or coats the core at least at said sheet ends of said metal sheets and fills each air gap between said sheet ends of said metal sheets.
H01F 27/245 - Magnetic cores made from sheets, e.g. grain-oriented
H01F 3/02 - Cores, yokes or armatures made from sheets
H01F 41/02 - Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils or magnets
The gas turbine comprising a plurality of combustors for igniting gas. The method comprising receiving first temperature measurements for a first plurality of probing points, each associated with one of the plurality of combustors (S0). The method comprising receiving second temperature measurements for a second plurality of probing points, each located downstream of the plurality of combustors (S1). The method comprising determining an association between the first plurality of probing points and the second plurality of probing points. The determining comprising using the first and second temperature measurements and position information for the first and second plurality of probing points to determine swirl characteristics for the gas turbine. The swirl characteristics representing the angular shift between the ignited gas at the plurality of combustors and the ignited gas at the second plurality of probing points (S2). A computer readable medium and gas turbine are also provided.
A controller (600) for a gas turbine (100) is described. The gas turbine (100) comprises the compressor (101) arranged to operate at a rotational speed n, the combustor (102) and the fuel supply means (127) comprising the first fuel supply means and the second fuel supply means, wherein the compressor (101) is arranged to provide air to the combustor (102) at a steady state air mass flow rate mss and wherein the fuel supply means (127) is arranged to supply fuel at a fuel mass flow rate mtotal to the combustor (102). The controller (600) is arranged to, responsive to a load change ?L to the load L, control the compressor (101) to provide air to the combustor (102) at a new air mass flow rate m TR , wherein the new air mass flow ratem TR is within a range between a first threshold m LBO and a second threshold m SUR .
A controller (700) for a gas turbine (100) is described. The gas turbine (100) comprises the compressor (101) arranged to operate at a rotational speed n, the combustor (102) and the fuel supply means (127) comprising the first fuel supply means and the second fuel supply means, wherein the compressor (101) is arranged to provide air to the combustor (102) at a steady state air mass flow rate mss and wherein the fuel supply means (127) is arranged to supply fuel at a fuel mass flow rate m total to the combustor (102). The controller (700) is arranged to, responsive to the load change ?L to the load L, control the fuel supply means to supply a proportion Z of the fuel mass flow rate m total as a fuel mass flow rate m fuel pilot via the first fuel supply means based, at least in part, on a combustor mass flow rate m t.
Abstract The invention relates to a method for testing a component (1) non- destructively, particularly for internal defects (6, 7), comprising the following steps: a) a rotationally symmetrical component (1) having a plurality of preferably cylindrical recesses, which are arranged at one or more hole circles (3, 5) is provided, b) a transmitter probe (12) serving as an ultrasound transmitter and a receiver probe (13) serving as an ultrasound receiver are arranged spaced apart from each other outside the component (1) such that ultrasound waves can be irradiated into a shaded area (11) located behind one of the recesses (2) in the component (1) by means of the transmitter probe (12) and ultrasound waves which are diffracted at least at one defect (7) present in the shaded area (11) can be received by the receiver probe (13), and c) time of flight diffraction is used to determine whether one or more faults (7) are present in the shaded area (7). The invention also relates to an apparatus for carrying out such a method. Date Recue/Date Received 2020-08-21
G01N 29/07 - Analysing solids by measuring propagation velocity or propagation time of acoustic waves
G01N 29/22 - Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object - Details
46.
ELECTRIC DEVICE WITH PRESSING PLATES FOR CLAMPING A MAGNETIZABLE CORE
The invention relates to an electric device (1), for example a track transformer, for connecting to a high-voltage line. The electric device (1) has a magnetizable core (2), at least one winding (5, 6) which is arranged in the vicinity of the core (2), and a housing (9, 10) which is filled with an insulating fluid and in which at least one winding (5, 6) is arranged. The core (2) is arranged at least partly outside of the housing (9, 10). In order to allow a stable mounting of a core consisting of two halves, the core (2) is arranged completely between two opposing pressing plates (11, 12), between which tension elements (13) for clamping the core (2) extend.
The invention relates to a current converter (1). The current converter (1) comprises: a primary conductor (11); a housing (9), through which the primary conductor (11) is led; an inductive alternating-current sensor (13), which has at least one secondary coil (21) arranged in the housing (9); and a compensation current sensor (15), having a compensation coil (23) arranged in the housing (9) for producing a compensation magnetic field, which compensates a primary magnetic field produced by the primary conductor (11), and having a magnetometer (25) for detecting a sum of the primary magnetic field and the compensation magnetic field.
G01R 15/18 - Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using inductive devices, e.g. transformers
48.
AN INTEGRATED AIR COOLING AND ARC RESISTANT SYSTEM FOR MEDIUM VOLTAGE DRIVE
An integrated air cooling and arc resistant system is provided for a voltage drive. The system comprises a cabinet including a back, an upper portion and a lower portion. The system further comprises a plurality of power cells disposed in the cabinet. The system further comprises a central chimney vertically disposed in the cabinet. The system further comprises a transformer disposed in the cabinet and being underneath the plurality of power cells. The transformer has a top end and a bottom end. The system further comprises a vertical plenum disposed in the back of the cabinet. The vertical plenum is configured to flow cool air passing from the plurality of power cells towards the bottom end of the transformer.
Various embodiments of the invention help to implement integrity verification of sensors (101-104) and signaling lines of the sensors. According to various embodiments, this is achieved by performing an analysis of a noise signal on the signaling line and transmitting check data indicative of a result of the analysis.
G01D 3/08 - Measuring arrangements with provision for the special purposes referred to in the subgroups of this group with provision for safeguarding the apparatus, e.g. against abnormal operation, against breakdown
G01D 18/00 - Testing or calibrating apparatus or arrangements provided for in groups
G08C 25/00 - Arrangements for preventing or correcting errors; Monitoring arrangements
G01R 29/26 - Measuring noise figure; Measuring signal-to-noise ratio
50.
METHOD FOR THE COMPUTER-AIDED PROCESSING OF OPERATING DATA RELATING TO A TECHNICAL SYSTEM
The invention relates to a method for the computer-aided processing of operating data (BD) relating to a technical system (M), wherein the operating data (BD) have been captured during operation of the technical system (M) in a predefined operating interval (BI) and are stored as digital data in a memory (SP). A pair of first state variables (v11, v12) and one or more second state variables (v2) with corresponding state values of the technical system (M) at the particular operating time (BZ) are extracted from the operating data (BD) by means of the method according to the invention. A two-dimensional representation is generated on a display (DI) of a user interface (UI) by means of these state variables (v11, v12, v2). Bar charts for different state ranges (ZB) of the pairs of first state variables (v11, v12) are generated in this representation (AS) on the basis of the evaluation of a threshold value criterion, wherein the bar charts represent, inter alia, how many states of the technical system (M) within the particular state range (ZB) can be classified as critical.
G05B 19/042 - Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
G05B 19/418 - Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control (DNC), flexible manufacturing systems (FMS), integrated manufacturing systems (IMS), computer integrated manufacturing (CIM)
A controller (300) for a gas turbine engine (10) which operates to a control method. The gas turbine engine (10) comprises a compressor (14) having a casing (50) which extends along, and is centred on, an operational axis (20). An array (48) of compressor blades are coupled to a rotatable engine shaft (22) which extends along the operational axis (20). A first variable guide vane (8a) is axially spaced apart from the compressor blade array (48) along the operational axis (20), wherein the first variable guide vane (8a) is rotatably mounted at a first location (202) on the casing (50), having a vane axis of rotation (121) at right angles to the operational axis (20). The first variable guide vane (8a) is coupled to an adjustment drive (154) operable to rotate the first variable guide vane (8a) about its axis of rotation (121) to a range (A-D) of angles relative to the operational axis (20). The controller (300) is operable to control the rotation of the first variable guide vane (8a) in dependence of engine shaft speed wherein over a first range (A-B) of engine shaft speed the angle of the first variable guide vane (8a) relative to the operational axis (20) decreases with increasing engine speed and over a second range (B-C) of engine shaft speeds the angle of the first variable guide vane (8a) relative to the operational axis (20) : increases with increasing engine speed.
A method and controller for creating a digital twin of a pump. The method includes receiving, by a controller, a specification curve corresponding to a centrifugal pump. The method includes building and executing, by the controller, a first model of the centrifugal pump, based on the specification curve. The method includes receiving sensor data corresponding to and during the operation of the pump. The method includes updating the first model according to the sensor data to produce an updated model and storing the updated model as a digital twin of the centrifugal pump.
F04D 15/00 - Control, e.g. regulation, of pumps, pumping installations, or systems
G05B 13/04 - Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion electric involving the use of models or simulators
53.
COMMUNICATION MODULE FOR A COMMUNICATION OR AUTOMATION DEVICE
The invention relates to a communication module for a communication or automation device having a housing (11) that has a connection region able to be brought into contact with a base module (2) of the communication or automation device. There is provision in the connection region for at least two centring pins (12) that are insertable into corresponding receptacles in the base module (2). Between the centring pins (12), a fastening screw (13) having a threaded section (14) penetrates the housing (11). The threaded section (14) of the fastening screw (13) is able to be screwed into a threaded hole (22) in the base module (2). Additionally, there is provision for a passage (17) for receiving the fastening screw (13), said passage being arranged substantially centrally in the housing (11) and running at right angles to the connection region. The fastening screw (13) has a driver ring (16) connected to it that surrounds a section of a shaft (15) of the fastening screw. Along the passage (17), there is provision in the housing (11) for a cutout (18) for the driver ring (16), said driver ring being axially displaceable inside the cutout.
H05K 7/14 - Mounting supporting structure in casing or on frame or rack
H01R 12/52 - Fixed connections for rigid printed circuits or like structures connecting to other rigid printed circuits or like structures
H04L 67/12 - Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
A heat shield (60) for a gas turbine engine (10), the heat shield (10) comprising a main body (61) having a first surface (70) and a second surface (72), the first surface (70) being exposed to a hot working gas in use, a plurality of walls (74, 76, 78, 80) upstanding from the second surface (72) and an impingement plate (86). The impingement plate (86) is located on top of at least one wall of the plurality of walls (74, 76, 78, 80) and forms a chamber (88) with the second surface (72) and plurality of walls (74, 76, 78, 80) and comprises an array of impingement holes (90). At least one pair of divider walls (92, 94) comprising a first divider wall (92) and a second divider wall (94) formed within the chamber (88) and extending between the impingement plate (86) and the second surface (72). The first divider wall (92) having a length that extends from a first wall (74, 76, 78, 80) of the plurality of walls (74, 76, 78, 80) towards a second wall (74, 76, 78, 80), the second wall (74, 76, 78, 80) opposing the first wall (74, 76, 78, 80), the second divider wall (94) having a length that extends from the second wall (74, 76, 78, 80) towards the first wall (74, 76, 78, 80). The first divider wall (92) and second divider (94) wall both extend such that there is no clear line of sight in a perpendicular direction (96) to the first divider wall (92) and/or second divider wall (94) and the first divider wall (92) and second divider wall (94) are spaced apart with respect to the perpendicular direction.
An internally-cooled turbomachine component, comprising: a main body (200) comprising; a first end wall (210), a second end wall (212) spaced apart from the first end wall (210), and a sidewall (220) which extends between the first end wall (210) and the second end wall (212) such that the first end wall (210), the second end wall (212) and the sidewall (220) define a cooling passage (230) extending between a fluid inlet (202) and a fluid outlet (204), a pedestal bank (240) comprising a plurality of pedestals (241) which span the cooling passage (230) between the first end wall (210) and the second end wall (212), wherein the pedestal bank (240) is spaced from the sidewall (220) to define a flow channel (250) therebetween; and a flow guide (260) for directing cooling flow away from the flow channel (250), the flow guide (260) extending from the flow channel (250) into the pedestal bank (240).
The invention relates to a redundant electrical machine for driving a propulsion means at an increased level of operational safety. The machine comprises, for example, two systems consisting in each case of a stator winding system and a rotor, which is assigned thereto and has permanent magnets, the rotors being fastened to a common shaft for driving the propulsion means. If a defect occurs in one of the stator winding systems, the rotor, which continues to rotate, has to be prevented from inducing electrical voltages in this stator winding system, since this can lead to a fire in the machine. Therefore, a demagnetisation device is provided, which brings about targeted demagnetisation of the permanent magnets of the rotor that is assigned to the defective stator winding system, and so the induction of electrical voltages is prohibited.
A nickel base super alloy or blade alloy having Ni as a main constituent and the following elements or portions in wt%: Fe: 2 to 8, Al: 6.1 to 6.8, Cr: 12.5 to 15, W: 1.5 to 4.5, Ta: 2.5 to 5.5, Hf: 1.2 to 2, C: 0.03 to 0.13, B: 0.005 to 0.02, Zr: 0.005 to 0.02, and Si: 0.005 to 0.02.
A connecting element electrically and mechanically connects two electrolytic cell stacks. An electrolysis device includes at least one connecting element of this type and the electrolytic cell stacks are connected by the connecting element. For the hydraulic connection of the electrolytic cell stacks, the connecting element has at least two hydraulic interfaces for each of two water circuits, which water circuits are independent of each other. Furthermore, the connecting element has electrical connection points electrically connected to each other, in order to connect the electrolytic cell stacks in a common circuit. By the connecting element, the connected electrolytic cell stacks can be hydraulically separated or connected to each other, depending on the design.
A converter station has two line-commutated converters for energy transmission via a bipolar high voltage direct current transmission line. In a first operating mode of the converter station the two converters are electrically connected in an anti-parallel circuit to the same pole of the high voltage direct current transmission link and one of the converters is operated as a rectifier and the other converter is operated as an inverter in an network. In a second operating mode the two converters are connected to different poles of the high voltage direct current transmission link and both converters are operated as either rectifiers or inverters in the AC network. In both operating modes a station active power exchanged between the converter station and the AC network is controlled by real power specifications for converter active powers which are exchanged between the converters and the AC network.
H02M 7/757 - Conversion of ac power input into dc power output; Conversion of dc power input into ac power output with possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only
H02M 1/36 - Means for starting or stopping converters
H02M 7/493 - Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode the static converters being arranged for operation in parallel
H02J 3/36 - Arrangements for transfer of electric power between ac networks via a high-tension dc link
H02M 7/77 - Conversion of ac power input into dc power output; Conversion of dc power input into ac power output with possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means arranged for operation in parallel
60.
POWER TRANSMISSION VIA A BIPOLAR HIGH-VOLTAGE DC TRANSMISSION LINK
A converter station includes two line-commutated converters for energy transmission through a bipolar high voltage direct current transmission link. The two converters are electrically connected in an anti-parallel circuit to the same pole of the high-voltage direct current transmission link. One of the converters is operated as a rectifier in an AC grid and the other converter is operated as an inverter in the AC grid. A station reactive power exchanged by the converter station with the AC grid is controlled by real power stipulations for converter real powers which are exchanged between the converters and the AC grid. A method for operating the converter station is also provided.
The aim of the invention is to create a transformer (20) for mounting on a mast of an air-insulated energy distribution network, the core of which transformer is protected against corrosion and environmental influences, while at the same time stable retention is provided. This aim is achieved, according to the invention, in that the transformer (20) has a winding block (1) having a solid insulating body, in which at least one upper voltage winding and at least one lower voltage winding are arranged. The winding block (1) delimits a completely peripherally closed central retention opening (25). Furthermore, a core unit (26) is provided, which has at least one magnetizable core (2.1, 2.2) and is inductively coupled to each lower voltage winding by means of each upper voltage winding. The core unit (26) extends through the retention opening (25) by means of at least one core leg and annularly extends around the winding block (1) on the outside by means of a ring portion (27). Retention means (7.1, 7.3, 5, 8.1) are provided for fastening the ring portion to the mast (8).
Abstract The invention relates to a winding unit (10) for connecting to a high-voltage network. The winding unit has a winding (12), which is embedded in a solid insulating body (11), and a first main connection terminal (19), which is connected to a first winding end of the winding (12) and is arranged on a first support (1) formed on insulating body (11). Furthermore, a second main connection terminal (20) is provided, which is connected to a second winding end of the winding (12). The winding has partial windings (13, 14) and taps (17), by means of which the number of windings of the partial windings (13, 14) connected in series can be set. By means of outgoing lines (15, 16, 18) extending in the insulating body (11), the taps (17) are connected to a tap connection terminal (3, 4, 5, 6, 7, 8) accessible from the outside. In order to encapsulate the upper voltage in the resin block over the entire periphery by means of a shielding cage, according to the invention, the tap connection terminals (3, 4, 5, 6, 7, 8) are formed on the support (1). Date Recue/Date Received 2020-04-28
In a cost-effective and qualitatively better method for producing spacers for a winding unit of an electrical high- voltage device, at least two starting components are mixed together in a mixing chamber under vacuum to form a component mixture. The component mixture is transferred to an extrusion housing, likewise under vacuum, of an extruder in which a transport device is arranged and which is equipped with a mouthpiece delimiting an outlet opening. The extrudate exiting from the mouthpiece is cured by the addition of heat in a vacuum in order to obtain the spacers.
B29C 39/00 - Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor
B29C 48/00 - Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
B29C 48/14 - Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the particular extruding conditions, e.g. in a modified atmosphere or by using vibration
B29C 48/25 - Component parts, details or accessories; Auxiliary operations
B29C 48/28 - Storing of extruded material, e.g. by winding up or stacking
B29C 48/29 - Feeding the extrusion material to the extruder in liquid form
B29C 48/475 - Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using pistons, accumulators or press rams
B29C 39/42 - Casting under special conditions, e.g. vacuum
H01F 27/30 - Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support
H01F 27/32 - Insulating of coils, windings, or parts thereof
B29B 13/00 - Conditioning or physical treatment of the material to be shaped
B29C 39/10 - Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor for making articles of definite length, i.e. discrete articles incorporating preformed parts or layers, e.g. casting around inserts or for coating articles
64.
PULSE WIDTH MODULATION CONTROL FOR A MULTILEVEL CONVERTER
A method for controlling multiple switching devices (15a-d, 75a-b) of a multilevel converter (1, 70) includes providing a plurality of carrier signals (C1-C6) and a reference signal (34, 80), the reference signal (34, 80) having a waveform range divided in a plurality of contiguous bands (B1-B6), dynamically allocating the plurality of carrier signals (C1-C6) to the multiple switching devices (15a-d, 75a-b), and generating pulse width modulation signals (18, 77) to generate switching events of the multiple switching devices (15a-d, 75a-b) based on a comparison of dynamically allocated carrier signals (C1-C6) with the reference signal (34, 80), wherein the plurality of carrier signals (C1-C6) have a phase shift between the carrier signals (C1-C6), and wherein the plurality of carrier signals (C1-C6) are dynamically allocated to the multiple switching devices (15a-d, 75a-b) such that for each switching device (15a-d, 75a-b) the plurality of carrier signals (C1-C6) are rotated and selected based on a position of the reference signal (34, 80) with respect to the plurality of bands (B1-B6).
H02M 7/49 - Combination of the output voltage waveforms of a plurality of converters
H02M 1/12 - Arrangements for reducing harmonics from ac input or output
H02M 7/5395 - Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters with automatic control of output wave form or frequency by pulse-width modulation
A method of controlling a gas turbine engine (10) having in axial flow series a compressor (14), a combustor (16), a compressor-turbine (18) and an exhaust (30) and preferably a power turbine (19) located between the turbine (18) and the exhaust (30), the power turbine (9) is connected to a shaft (28) for driving a load (26). The gas turbine is capable of operating in at least a high output power range 65R, a medium-high output power range 67R, a medium- low output power range 70R, 70R' and a low output power range 72R. The method comprising the steps during the medium-high output power range 67R bleeding a gas from a downstream part (36) of the compressor (14) to an upstream part (38) of the compressor (14) so that a first predetermined temperature T1 of the combustor is maintained, during the medium-low output power range 70R, 70R' bleeding a gas from a downstream part (36) of the compressor (14) to an upstream part (38) of the compressor (14) and bleeding a gas from the downstream part (36) of the compressor (14) to the exhaust (30) so that a second predetermined temperature T2 of the combustor is maintained.
F02C 9/18 - Control of working fluid flow by bleeding, by-passing or acting on variable working fluid interconnections between turbines or compressors or their stages
A method of controlling a gas turbine engine (10), the gas turbine engine (10) having in axial flow series a compressor (14), a combustor (16), a compressor-turbine (18) and an exhaust (30), the gas turbine capable of operating in at least a high output power range (65R), a medium-high output power range (82R), a medium output power range (67R), a medium-low output power range (70R, 70R') and a low output power range (72R). The method comprising the steps during the medium-high output power range (82R) varying the angle of the variable guide vanes (46) so that a third predetermined temperature (T3) of the combustor (16) is maintained, during the medium output power range (67R) the variable guide vanes (46) are closed and bleeding a gas from a downstream part (36) of the compressor (14) to an upstream part (38) of the compressor (14) so that a first predetermined temperature (T1) of the combustor (16) is maintained, during the medium-low output power range (70R, 70R') the variable guide vanes (46) are closed and bleeding a gas from a downstream part (36) of the compressor (14) to an upstream part (38) of the compressor (14) and bleeding a gas from the downstream part (36) of the compressor (14) to the exhaust (30) so that a second predetermined temperature (T2) of the combustor (16) is maintained.
F02C 9/28 - Regulating systems responsive to plant or ambient parameters, e.g. temperature, pressure, rotor speed
F02C 9/18 - Control of working fluid flow by bleeding, by-passing or acting on variable working fluid interconnections between turbines or compressors or their stages
F02C 9/20 - Control of working fluid flow by adjusting vanes
A compressor aerofoil (70) for a turbine engine. The compressor aerofoil (70) comprises a tip portion (100) comprising a tip wall (106) which extends from the aerofoil leading edge (76) to the aerofoil trailing edge (78). The tip wall (106) defines a squealer (110) which extends between the leading edge (76) the trailing edge (78). A shoulder (104, 105) is provided on one of the suction surface wall (88) or pressure surface wall (90) which extends between the leading edge (76) and the trailing (78). A transition region (108) tapers from the shoulder (104) in a direction towards the tip wall (106). The other of the suction surface wall (88) or pressure surface wall (90) extends towards the tip wall (106).
Method and detection device for detecting a high-impedance ground fault in an electrical energy supply network with a grounded neutral point The invention relates to a method for detecting a high-impedance ground fault in an electrical energy supply network (12) with a grounded neutral point, in which a test signal is fed with a detection device (10) into the energy supply network (12), wherein the test signal has a frequency which differs from the network frequency of the energy supply network (12), and the presence of a high-impedance ground fault is inferred on the basis of a measuring signal produced by the test signal. In order to enable a reliable detection, with low equipment costs, of high-impedance ground faults in energy supply networks with a grounded neutral point, it is proposed that a three-phase test signal is fed into the phase conductors of the energy supply network (12) as a test signal, a measuring signal which indicates the displacement voltage of the test signal is generated with the detection device (10), the displacement voltage is compared with a threshold value using a test device (15) of the detection device (10), and the presence of a high-impedance ground fault is detected if the displacement voltage exceeds the threshold value. The invention also relates to a correspondingly designed detection device (10).
A temperature control system (300) for a variable frequency drive (10, 100) includes a sealed enclosure (310), a power electronic component (330) and/or a power magnetic component (320) positioned inside the sealed enclosure (310), and a controller (400) configured to control a temperature of the power electronic component (330) and/or the power magnetic component (320) relative to an internal air temperature (Tair) inside the sealed enclosure (310) prior to an electrical energy application and operation of the power electronic component (320) and/or power magnetic component (320) to prevent condensation induced electrical failure of the power electronic component (330) and/or power magnetic component (320) utilizing a cooling system (340) and/or a heating system (350).
An assembly for connecting to a high-voltage grid includes a plurality of single-phase transformers, each of which has a transformer tank that is filled with a fluid and is equipped with a core with at least one coil. The coils of the single- phase transformers are at least partly connected together, thereby forming a neutral or star point. In order to permit the assembly to be quickly assembled in situ while at the same time providing a reliable current path for compensation and grounding currents, the coils are connected together by a neutral or star point conductor or rail in order to form the neutral or star point. The neutral or star point conductor or rail is retained in an insulated manner on the transformer tank.
H01F 27/00 - MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES - Details of transformers or inductances, in general
H01F 27/40 - Structural association with built-in electric component, e.g. fuse
The invention relates to a high-voltage device (1) having a housing (2) and at least one component (3) which is electrically insulated from the housing (2). The at least one component (3) is spaced from the housing (2) and mechanically connected to the housing (2). There is at least one ceramic spacer element (6) between the housing (2) and the at least one component (3). The use according to the invention of the high-voltage device (1) includes heat which is produced at connection elements of the at least one component (3) which is electrically insulated from the housing (2) being transferred from the component (3) via the at least one ceramic spacer element (6) to the housing (2), and being emitted from the housing (2) to the environment.
A polymeric tank for housing power components in a dry or fluid filled environment is disclosed. A mounting receptacle and plug pair used to secure the power components within the interior walls of the tank. The mounting receptacle configured to be an integral part of the interior wall. A permeable shield is insertable within the interior walls of the tank to safeguard against electromagnetic radiation.
The invention relates to a method for providing data packets (5) from a CAN bus (2), in particular a charging station for a motor vehicle. In order to permit a resource-saving and nevertheless secure possible way of providing data packets (5), steps are provided: detection of the data packets (5) from at least one component (3) of the CAN bus (2) by a detection unit (10) which is part of the CAN bus (3), creation of at least one web resource (6) which contains the data packets (5) in accordance with a predetermined specification by a computing unit (11), wherein only data packets (5) which are related in accordance with the predetermined specification are combined in the at least one web resource (6), transmission of a content of the at least one web resource (6) from the computing unit (11) to a receiving device (4) by means of a communication unit (12) via a data link (7) having a transmission protocol that differs from the CAN bus (2).
H04L 67/02 - Protocols based on web technology, e.g. hypertext transfer protocol [HTTP]
H04L 67/12 - Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
A controller (50) for a gas turbine arranged to supply a load L is described. The gas turbine comprises a fuel supply means arranged to supply fuel at a fuel flow rate FF to a combustor. The fuel supply means comprises a first fuel supply means and a second fuel supply means. The controller (50) is arranged to control a proportion P of the fuel flow rate FF supplied via the first fuel supply means based, at least in part, on the fuel flow rate FF. A gas turbine comprising such a controller (50) and a method of controlling such a gas turbine are described.
A controller (50) for a gas turbine is described. The gas turbine is arranged to supply a load L. The gas turbine comprises a fuel supply means arranged to supply fuel at a fuel flow rate FF to a combustor, wherein the fuel supply means comprises a first fuel supply means and a second fuel supply means. The controller (50) is arranged to determine one or more ratios R of one or more combustor operating parameters COP respectively at the load L to respective reference combustor operating parameters COPR at a reference load LR. The controller (50) is further arranged to control a proportion P of the fuel flow rate FF supplied via the first fuel supply means based, at least in part, on the determined one or more ratios R. A gas turbine (600) and a method of controlling a gas turbine are also described.
A method for identifying a secondary part during use in a linear-motor-based system, wherein a primary part includes primary-part coils in the linear-motor-based system, the secondary part has a magnetic active part and the primary-part coils can be actuated via a drive current such that an advancing force acting on the secondary part and movement of the secondary part along the primary part is achievable, where at least one secondary-part winding in a circuit is provided on the secondary part, selected primary-part coils are energized via a primary current at one or more test signal frequencies to induce a secondary current in the secondary- part winding to identify the rotor, a characteristic property of the secondary-part winding or the circuit is representative of the secondary part, and where the secondary current influences a current response of the primary-part coils and the characteristic property is measured using the current response.
B65G 23/23 - Arrangements or mountings of driving motors of electric linear motors
B65G 54/02 - Non-mechanical conveyors not otherwise provided for electrostatic, electric, or magnetic
G01V 3/10 - Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination or deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils
77.
METHOD FOR OPERATING A SYSTEM, SYSTEM AND COMPUTER PROGRAM PRODUCT
In a method for operating a system, a first vibration is imparted to a component of the system and the first vibration of the component is detected by a sensor. The sensor generates a sensor signal for transmission to a control device, which analyzes the sensor signal and determines whether a buildup is present on the component based upon the analysis of the sensor signal. A second vibration is imparted to the component to remove the buildup when the buildup has been detected.
B02C 17/18 - Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls - Details
B02C 23/00 - Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in groups or not specially adapted to apparatus covered by one only of groups
B02C 25/00 - Control arrangements specially adapted for crushing or disintegrating
B65D 88/66 - Large containers characterised by means facilitating filling or emptying preventing bridge formation using vibrating or knocking devices
B65D 90/48 - Arrangements of indicating or measuring devices
78.
METHOD AND DEVICE FOR DETACHING AN ADHERING CHARGE FROM THE INNER SIDE OF A GRINDING PIPE OF A TUBE MILL
85871043 ABSTRACT In a method for detaching a frozen charge from an inner wall of a grinding tube of a tube mill, a motor of a drive system is operated in a first mode to rotate the grinding tube for grinding. In a second mode, the motor of the drive system is operated to remove the frozen charge from the inner wall of the grinding tube such that operation of the motor to effect a rotational movement of the grinding tube is repeatedly disturbed by a disturbance signal to cause a repeated disturbance within a variable time interval, with the time interval of the repeated disturbance being shortened. Date Recue/Date Received 2020-11-05
B02C 17/18 - Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls - Details
A gas turbine combustor assembly with a trapped vortex feature A combustor assembly (100) of a gas turbine engine (10) having a trapped vortex feature to reduce emissions is presented. The trapped vortex is formed using ammonia injected into an annular cavity (60) located in a wall surrounding a combustion chamber (28) of the combustor assembly. The annular cavity (60), and therefore the trapped vortex, is positioned such that when the combustion occurs within the combustion chamber the position of the annular cavity, and therefore of the trapped vortex, is downstream of a flame front (9). The emissions resulting from combustion travel through the combustion chamber (28) and pass by the annular cavity (60) before exiting the combustion chamber. The trapped vortex in the combustion chamber supplies NH2radicals, resulting from the ammonia of the trapped vortex, to the passing by emissions and converts NOx and/or N20 in the emissions to non-polluting products, mainly water and nitrogen.
The invention relates to a functional structure (1) for use in an energy converter and/or a turbomachine. The structure (1) comprises a lattice comprising at least one lattice cell (2), comprising lattice nodes (3) and lattice connecting elements (4) connected to the lattice nodes (3), the lattice cell (2) also comprising a gyrating mass (5) which is connected to the lattice nodes (3) by means of at least one arm (6), the gyrating mass (5) being designed to receive mechanical energy (W) when the structure (1) is in use. A lattice constant (C) of the lattice cell (2) has a dimension of less than 100 mm.
A compressor aerofoil (70) rotor blade for a turbine engine. The compressor aerofoil (70) comprises a root portion (72) spaced apart from a tip portion (100) by a main body portion (102). The main body portion (102) is defined by a suction surface wall (88) having a suction surface (89) and a pressure surface wall (90) having a pressure surface (91). The suction surface wall (88) and the pressure surface wall (90) meet at a leading edge (76) and a trailing edge (78). The tip portion (100) comprises a shoulder (104) provided on the pressure surface wall (90). A tip wall (106) extends from the aerofoil leading edge (76) to the aerofoil trailing edge (78). A transition region (108) of the pressure surface wall (90) tapers from the shoulder (104) in a direction towards the tip wall (106). The tip wall (106) comprises a squealer (110) defined by a first tip wall region (112) which extends from the trailing edge (78) to a winglet (114).
An additive manufacturing technique is presented. A first layer of powdered material is spread on a build platform, with or without having a workpiece positioned therein. The build platform is in a part building module of an additive manufacturing apparatus. The powdered material is a precipitation-hardened superalloy such as a Nickel-based superalloy, for example a Nickel-based superalloy having a percentage by volume of gamma prime phase equal to or greater than 45 percentage by volume. The first layer forms at least a part of a powder bed formed of the powdered material on the build platform. The powdered material of the first layer is heated to a temperature between 65 percent and 70 percent of a liquidus temperature of the precipitation-hardened superalloy. After aforementioned pre-heating, portions of a surface of the first layer are selectively scanned by using an energy beam arrangement to melt or sinter the selectively scanned portions.
B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
B22F 5/00 - Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
B22F 5/04 - Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product of turbine blades
B22F 7/08 - Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting of composite workpieces or articles from parts, e.g. to form tipped tools with one or more parts not made from powder
B22F 7/06 - Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting of composite workpieces or articles from parts, e.g. to form tipped tools
83.
TURBINE ASSEMBLY FOR IMPINGEMENT COOLING AND METHOD OF ASSEMBLING
The present invention relates to a turbine assembly (10) and a method of assembling such an assembly. The turbine assembly (10) comprises a basically hollow aerofoil (12), an impingement tube (15), and an impingement tube sleeve (200). The impingement tube sleeve (200) comprises at least one impingement tube sleeve segment (201), the hollow aerofoil (12) having at its interior surface (210) longitudinal ribs (211) extending from a leading edge (16) towards a trailing edge (20) of the hollow aerofoil (12). A first impingement tube sleeve segment (202) of the at least one impingement tube sleeve segment (201) provides a slotted flow blocker (204) at a surface (205) of the first impingement tube sleeve segment (202), the first impingement tube sleeve segment (202) being inserted into the hollow aerofoil (12) such that the ribs (211) of the hollow aerofoil (12) engage with corresponding slots (208) of the slotted flow blocker (204) and such that the surface (205) of the first impingement tube sleeve segment (202) rests on the ribs (211). The impingement tube (15) is inserted into the hollow aerofoil (12) such that the at least one impingement tube sleeve segment (201) is arranged between the interior surface (210) of the hollow aerofoil (12) and an exterior surface (220) of the impingement tube (15).
A compressor aerofoil (70) for a turbine engine. The compressor aerofoil (70) comprises a root portion (72) spaced apart from a tip portion (100) by a main body portion (102). The main body portion (102) is defined by : a suction surface wall (88) having a suction surface (89), and a pressure surface wall (90) having a pressure surface (91). The suction surface wall (88) and the pressure surface wall (90) meet at a leading edge (76) and a trailing edge (78). The tip portion (100) comprises a tip wall (106) which extends from the aerofoil leading edge (76) to the aerofoil trailing edge (78). The tip wall (106) defines a squealer (110) comprising : a first tip wall region (112) which extends from the leading edge (76); a second tip wall region (114) which extends from the trailing edge (78); and a third tip wall region (116) which extends between the first tip wall region (112) and the second tip wall region (114).
The invention relates to a method for identifying an outgoing circuit having an earth fault in a three-phase power supply system, wherein the zero voltage (U0) occurring at a neutral point and the zero currents (I01, I02,, I0n) of the outgoing circuits (A1, A2,, An) are measured and stored at periodically recurring times, wherein a space vector representation of the zero voltage (U0_RZ) and an active component of the space vector representation of the zero currents (I01_RZ_WK, I02_RZ_WK,, I0n_RZ_WK) are determined on the basis of the space vector representation of the zero voltage (U0_RZ) by means of transformation and, after an earth fault has been determined at a first time (t1), a second time (t2) at which the space vector representation of the zero voltage (U0_RZ) has a local minimum is determined, and a third time (t3) at which the space vector representation of the zero voltage (U0_RZ) has a local maximum is determined, wherein the trapezoidal sum of the active component of the space vector representation of the zero currents (I01_RZ_WK, I02_RZ_WK,, I0n_RZ_WK) is determined between the second time (t2) and the third time (t3) and is used to determine the outgoing circuit having the earth fault in that manner, and wherein the trapezoidal sum of the active component of the space vector representation of the zero currents (I01_RZ_WK, I02_RZ_WK,, I0n_RZ_WK) is compared with a predefined variable threshold value and an earth fault is determined if this threshold value is exceeded.
G01R 31/52 - Testing for short-circuits, leakage current or ground faults
H02H 3/16 - Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition, with or without subsequent reconnection responsive to fault current to earth, frame or mass
H02H 3/33 - Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition, with or without subsequent reconnection responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors using summation current transformers
H02H 3/38 - Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition, with or without subsequent reconnection responsive to phase angle between voltage and current
86.
TRANSFER APPARATUS AND METHOD FOR TRANSFERRING ARTICLES
The invention proposes a transfer apparatus (1), comprising a conveying unit (2), a sorting unit (10), which is designed for receiving and sorting articles from the conveying unit (2), a transfer unit (15) with a feeding unit (50), said transfer unit forming a transporting connection between the conveying unit (2) and the sorting unit (10), and a discharging unit (20), which is positioned on a portion of the conveying unit (2) and is designed to discharge an article (4, 5, 6) onto the transfer unit (15) only when said article (4, 5, 6) is at a predefined minimum distance from a previously discharged article (4, 5, 6). The invention also proposes a method for transferring articles.
A system for autonomous generative design in a system having a digital twin graph a requirements distillation tool for receiving requirements documents of a system in human-readable format and importing useful information contained in the requirements documents into the digital twin graph, and a synthesis and analysis tool in communication with the digital twin graph, wherein the synthesis and analysis tool generates a set of design alternatives based on the captured interactions of the user with the design tool and the imported useful information from the requirements documents. The system may include includes a design tool with an observer for capturing interactions of a user with the design tool, In addition to the observer, an insighter in communication with the design tool and with the digital twin graph receives design alternatives from the digital twin graph and present the received design alternatives to a user via design tool.
CA 03058356 2019-09-27 85426641 , ABSTRACT A method for starting a vertical forced-flow steam generator in a waste-heat steam generator, wherein feed water is fed to the forced-flow steam generator as working fluid, and there flows firstly through a feed-water preheater and then through an evaporator and is at least partly evaporated, wherein the partly evaporated working fluid is fed to a water separation system, in which non-evaporated working fluid is separated from evaporated working fluid and is collected, in which at least part of the non-evaporated working fluid is fed geodetically to the evaporator and, beginning from a certain quantity of accumulating non- evaporated working fluid, a remaining part is automatically removed from the water separation system. A corresponding device is for starting a vertical forced- flow steam generator according to the method.
F22B 29/12 - Steam boilers of forced-flow type of once-through type, i.e. built-up from tubes receiving water at one end and delivering superheated steam at the other end of the tubes operating with superimposed recirculation during starting and low-load periods, e.g. composite boilers
F01K 13/02 - Controlling, e.g. stopping or starting
F22B 29/06 - Steam boilers of forced-flow type of once-through type, i.e. built-up from tubes receiving water at one end and delivering superheated steam at the other end of the tubes
F22B 35/10 - Control systems for steam boilers for steam boilers of forced-flow type of once-through type
F22B 35/14 - Control systems for steam boilers for steam boilers of forced-flow type during the starting-up periods, i.e. during the periods between the lighting of the furnaces and the attainment of the normal operating temperature of the steam boilers
89.
METHOD AND APPARATUS FOR ROBUST REDUCTION OF SHAPE ERROR IN LASER POWDER DEPOSITION BASED ADDITIVE MANUFACTURING PROCESS DUE TO UNCERTAINTY
A method of optimizing an additive manufacturing (AM) process includes receiving at least one design parameter of the AM process, receiving information relating to uncertainty in at least one other parameter of the AM process, performing uncertainty quantification in the optimization processor based on the at least one design parameters and uncertainty information to identify a shape error in an object being produced, updating the at least one design parameter of the AM process and utilizing the updated at least one design parameter in the AM process. A system for optimizing an AM process includes a design processor to produce at least one design parameter for an object to be manufactured, and an optimization processor to receive the at least one design parameter and uncertainty information to identify a shape error in the object to be manufactured and update the design parameters based on the shape error, prior or during the manufacturing process.
G05B 13/02 - Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion electric
G05B 19/4099 - Surface or curve machining, making 3D objects, e.g. desktop manufacturing
90.
METHOD FOR MINIMIZING FORCES ACTING ON TURBINE BLADES IN SPECIFIC FREQUENCY RANGES
A gas turbine engine (100) has a circumferential staging configuration of fuel injectors in a combustor. As a turbine blade revolves within the gas turbine engine it is subjected to lift and drag forces based on the configuration of lit injectors (14b). A configuration of lit injectors (14b) that results in the minimum unsteady forces the turbine blade (13) experiences is determined in order to increase the life span of the turbine blade (13) and limit any structural failures.
A method of additively manufacturing a ceramic matrix composite material includes providing a ceramic fiber and powdery base material for a ceramic matrix composite and layer-by-layer building up the ceramic matrix material for the ceramic matrix composite by irradiating of a powder bed formed by the base material with an energy beam according to a predetermined geometry, wherein the base material is remelted, solidified and adhesively joined to the ceramic fiber in that parameters of the energy beam are locally chosen such that in the contact region of the ceramic fiber and the powder bed, the ceramic fiber is only partly remelted.
C04B 35/565 - Shaped ceramic products characterised by their composition; Ceramic compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxides based on carbides based on silicon carbide
The invention relates to a burner tip (19), suitable for use in a pilot burner, e.g. in a gas turbine. The invention further relates to a method for producing the burner tip (19) by an additive production process such as selective laser melting. According to the invention, a part of the wall (25) of the burner tip (19) is made porous with pores or as a space grid, wherein the air can be transported from the air duct through the intermediate spaces in the space grid or the open pores. In this way, the air can cool the material of the burner tip (19) which results in a lesser thermal load. The wall structure (25) can be built up in multiple layers (26, 27, 28) of differing porosity or with a differing grid structure.
F23R 3/28 - Continuous combustion chambers using liquid or gaseous fuel characterised by the fuel supply
F23D 14/22 - Non-premix gas burners, i.e. in which gaseous fuel is mixed with combustion air on arrival at the combustion zone with separate air and gas feed ducts, e.g. with ducts running parallel or crossing each other
A system for determining the location of pipelines using at least one geopig that is introduced into a pipeline, advances therein and that has a magnetic source for generating a magnetic field, wherein at least one unmanned aerial vehicle is provided with magnetic field sensors and position determination devices, a controller is provided for determining the field strength profile of the magnetic field and for positioning the unmanned aerial vehicle at a defined distance from the at least one geopig, and a device is provided for determining the location Of the at least one geopig from the position of the unmanned aerial vehicle and the defined distance between the at least one geopig and the unmanned aerial vehicle.
G01V 3/08 - Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination or deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices
F16L 55/48 - Indicating the position of the pig or mole in the pipe or conduit
G01V 3/15 - Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination or deviation specially adapted for use during transport, e.g. by a person, vehicle or boat
G01V 3/16 - Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination or deviation specially adapted for use during transport, e.g. by a person, vehicle or boat specially adapted for use from aircraft
94.
PARTIALLY-CAST, MULTI-METAL CASING FOR COMBUSTION TURBINE ENGINE
An end or intermediate casing for a combustion turbine engines includes prefabricated vanes of a first metal. Ends of the prefabricated vanes are then embedded within cast-in place inner and outer, annular-shaped ring castings, formed from a second metal having a lower melting point than the first metal. The respective ends of the prefabricated vanes include first and second shanks, with respective first and second surface features that are oriented transverse to the central axis of the vane are encapsulated in the molten second metal during the inner and outer ring casting. Once the castings harden, the first and second surface features, such as for example circumferential fillets projecting outwardly from the airfoil portion of the vane, inhibit separation of the vanes from the respective inner and outer rings.
A nickel-based superalloy without titanium and a corresponding powder. A process for producing a component, wherein the alloy or the powder is used, in particular for a process for additive manufacture, especially selective laser sintering or selective laser melting. A component having an alloy or produced from the powder or produced by the process.
The aim of the invention is to create an electrical appliance (2) that can be connected to a high-voltage network in a flexible and cost-effective manner. To this end, a device (1) with a housing (12) filled with an insulating fluid is provided, a high-voltage bushing (16) comprising a high-voltage conductor (15) extending through a bushing insulator (17) being fixed to the housing (12). A cable connection (9) is also provided on the housing (12) in order to connect a high-voltage cable (8). In the housing (12), a jumper (14) surrounded by the insulating liquid produces a direct electrical connection between the cable connection (9) and the high-voltage conductor (15) of the high-voltage bushing (16). According to the invention, the high-voltage bushing is no longer placed in a boiler filled with oil, but is part of a mobile device connected to a winding in said boiler by means of a cable.
H01F 27/04 - Leading of conductors or axles through casings, e.g. for tap-changing arrangements
H01B 17/34 - Insulators containing liquid, e.g. oil
H01R 13/53 - Bases or cases for heavy duty; Bases or cases with means for preventing corona or arcing
H02B 5/00 - Non-enclosed substations; Substations with enclosed and non-enclosed equipment
H02G 1/02 - Methods or apparatus specially adapted for installing, maintaining, repairing, or dismantling electric cables or lines for overhead lines or cables
A method of machining a tip (512) profile of a blade (130, 140) for a turbomachine is provided. The method comprises coupling the blade (130, 140) to a component (110, 112, 114, 120, 124) of the turbomachine; supporting the component (110, 112, 114, 120, 124) on a machining apparatus (450), the machining apparatus (450) being configured to remove material from the blade (130, 140) according to a cutting path defined within a coordinate system of the machining apparatus (450), wherein the component (110, 112, 114, 120, 124) is supported such that a datum axial end face (D) of the component (110, 112, 114, 120, 124) is aligned with a datum (462) of the coordinate system of the machining apparatus (450); and machining the blade (130, 140) according to the cutting path. A system for machining a tip (512) profile of a blade (130, 140) for a turbomachine is also provided.
F01D 11/00 - Preventing or minimising internal leakage of working fluid, e.g. between stages
B24B 5/00 - Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
F01D 11/14 - Adjusting or regulating tip-clearance, i.e. distance between rotor-blade tips and stator casing
F01D 25/28 - Supporting or mounting arrangements, e.g. for turbine casing
98.
A TECHNIQUE FOR CONTROLLING OPERATING POINT OF A COMBUSTION SYSTEM BY USING PILOT-AIR
A method for controlling pilot-fuel/pilot-air ratio provided to a burner of a combustion system for altering its operating point is presented. First, a value of a first parameter e.g. temperature, is checked, and if the value equals or exceeds a predetermined maximum limit of the first parameter that places the operating point in a first undesired region of operation, then a pilot-fuel/pilot-air ratio is altered such that the value of first parameter is moved to below the first parameter's predetermined maximum limit. Similarly, a value of a second parameter e.g. pressure, is checked, and if the value equals or exceeds a predetermined maximum limit of the second parameter that places the operating point in a second undesired region of operation, then again the pilot-fuel/pilot-air ratio is altered such that the value of second parameter is moved to below the second parameter's predetermined maximum limit. A combustion system is also presented.
The invention relates to a system (1) and to a method for switching high voltages with a switching path which comprises at least two serially connected switching units (2, 3). Each switching unit (2, 3) comprises at least one support element (4, 5) and elements of a kinematic chain (7) for transferring a switching movement from at least one drive (8). The support elements (4, 5) of the at least one switching unit (2, 3) are interconnected by means of at least one coupling element (10).
Embodiments include methods, network security computer systems, and computer program products for identifying deviant engineering modifications to programmable logic controllers. Aspects include: collecting, by a network traffic collection device of the network security computer, network traffic data from one or more engineering stations, and storing, by a network traffic data storage device, the network traffic data collected. Each of the engineering stations may include one or more programmable logic controllers. The method also may include: comparing, by a network traffic comparison module, the network traffic data collected, detecting, by an abnormality detection module, any deviant engineering modifications to the programmable logic controllers in the engineering stations; and generating, by an alarming and correction module, one or more reports for the deviant engineering modifications to programmable logic controllers. The alarming and correction module may generate one or more alarms and block any network traffic associated with the deviant engineering modifications.
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