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公开(公告)号：US20240162828A1
公开(公告)日：2024-05-16
申请号：US18280115
申请日：2021-03-04
申请人： Hitachi Energy Ltd
发明人： Alexandre CHRISTE
摘要： A method is configured for operating a converter (10) which is implemented as a modular-multilevel converter and comprises a control arrangement (38) and a number M of phase-legs (21 to 29). The method comprises detecting whether the converter (10) has to be set into one mode of a group comprising a static synchronous compensator mode or a grid unbalance mode, generating mode control signals (MCS) depending on the detected mode, generating balance voltage reference signals (ubal,ref) depending on a first side frequency (ωg), a second side frequency (ωm), second side current reference signals (im,ref) and the mode control signals (MCS), generating a phase-leg control signal (uref), generating cell control signals (51 to S4) and providing the cell control signals (51 to S4) to semiconductor switches (41 to 44) of cells (31) of the phase-legs (21 to 29).
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公开(公告)号：US20210175712A1
公开(公告)日：2021-06-10
申请号：US16988401
申请日：2020-08-07
申请人： Third Equation Ltd.
发明人： Matthew WILLIAMS , Andrew SCOBIE
IPC分类号： H02J3/28 , H02M5/42 , H02M5/04 , H02M5/297 , H02J3/18 , H02J1/14 , G05F1/33 , H02M5/27 , H02M5/16 , H01F29/14 , H02M5/10 , H01F38/04 , H02J3/01 , G05F1/325 , H02M5/451 , G05F1/335
摘要： An electrical power distribution network includes: a plurality of electrical power control apparatuses, each of which include one or more signal conversion components receiving electrical power in the form of a first signal and generating a corresponding second signal, a controller that controls operation of the signal conversion components, electrical power generation components acting as sources of electrical power to at least some of the electrical power control apparatuses, and electrical power consumption components acting as sinks of electrical power from at least some of the electrical power control apparatuses. The electrical power control apparatuses operate autonomously but are interconnected so that the electrical power control apparatuses collectively maintain the voltages and frequencies of electrical power signals flowing through the electrical power distribution network at target values to compensate for variations in the sinks and/or sources of electrical power.
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公开(公告)号：US20210152106A1
公开(公告)日：2021-05-20
申请号：US17127484
申请日：2020-12-18
申请人： Kohler Co.
发明人： Isaac S. Frampton , Adam Larson
IPC分类号： H02P5/74 , H02M5/27 , H02K19/26 , H02P9/42 , B60L1/00 , H02P27/08 , H02P27/16 , H02P9/14 , H02J7/00 , H02J7/14 , B60L58/10 , H02J7/24 , H02J7/02
摘要： An apparatus includes a first inverter circuit and a second inverter circuit. The first invertor circuit is configured to couple an alternator and a load device to deliver a driving signal from the alternator to the load device. The second invertor circuit is configured to couple the alternator to the load device to deliver a driving signal from the alternator to the load device and configured to couple a battery to the alternator to deliver a charging signal from the alternator the battery
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公开(公告)号：US20200290470A1
公开(公告)日：2020-09-17
申请号：US16502634
申请日：2019-07-03
发明人： Tsung-Yuan WU
摘要： An intelligent current control apparatus provides a current control for a power supply branch and a load. The intelligent current control apparatus includes at least one power conversion unit and a control unit. The control unit controls a total phase current, which is composed of a single-phase current and a household phase current in the same phase, to be less than or equal to a rated phase current of the power supply branch.
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公开(公告)号：US10594227B1
公开(公告)日：2020-03-17
申请号：US16362533
申请日：2019-03-22
发明人： Vladimir Blasko
摘要： A matrix converter system having a current control mode operation is provided. The system includes a matrix converter having a switching matrix. The matrix converter is coupled at its low-voltage side to a generator and at its output load side to a load. A controller having a pulse width modulation (PWM) control circuit is configured to control the matrix converter via its switching matrix to increase energy within the internal inductances of the generator when the switching matrix causes a short circuit. A feed forward calculator is configured to calculate a feed forward output phase angle. The feed forward output phase angle is an estimation of an angle between an output current vector and an output voltage vector that represent feedback signals of current and voltage output by the matrix converter. The angular position of the voltage output vector is adjusted as a function of the feed forward output phase angle to align angular position or phase angle of the voltage output vector that represents the voltage output with a selected angular position or phase angle.
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公开(公告)号：US10110139B1
公开(公告)日：2018-10-23
申请号：US15787006
申请日：2017-10-18
IPC分类号： H02P6/16 , H02M5/27 , H02P25/062
CPC分类号： H02M5/27 , H02M5/293 , H02P21/16 , H02P23/14 , H02P25/062
摘要： A matrix converter includes a power converter circuit connectable on one side thereof with an alternating-current supply via a high-frequency filter and connectable on another side thereof with an alternating-current motor; a snubber circuit connected with a one-side line for connecting the high-frequency filter and the power converter circuit; a discharge switch discharging a charge accumulated in the snubber circuit depending on a voltage of the snubber circuit; and a control circuit configured to execute controlling the power converter circuit on the basis of a carrier frequency in test such that a test voltage is applied to the alternating-current motor, changing the carrier frequency in test on the basis of an operation state of the discharge switch, and determining constants of the alternating-current motor on the basis of a response state of the alternating-current motor at the time when the test voltage is applied.
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公开(公告)号：US10003272B2
公开(公告)日：2018-06-19
申请号：US15554130
申请日：2016-03-25
发明人： Satoshi Ichiki
摘要： A configuration for the object includes: a bidirectional switch circuit which turns ON/OFF supply of input three-phase AC power to a load LD; and a control unit which performs virtual AC/DC conversion processing in which a plurality of interline voltage generation sections selecting two phases among the input three-phase AC power are obtained according to a plurality of modes classified according to a magnitude relationship between voltages of respective phases in the input three-phase AC power within a predetermined switching cycle and generates a switching pattern of the bidirectional switch circuit so as to perform virtual DC/AC conversion processing corresponding to the plurality of interline voltage generation sections from a second carrier waveform pattern according to the plurality of modes and a U-phase control signal and a V-phase control signal corresponding to a phase of an output side.
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8.发明申请公开(公告)号：US20180062291A1
公开(公告)日：2018-03-01
申请号：US15688300
申请日：2017-08-28
发明人： Stefan Götz
IPC分类号： H01R12/72 , H01R13/629 , H01R13/703 , H02M5/297 , H02M5/27 , H02M7/00
CPC分类号： H01R12/721 , H01R13/629 , H01R13/7034 , H02M5/271 , H02M5/297 , H02M7/003
摘要： A device and a method for integrating at least one electrical element into an electrical circuit during ongoing operation of the electrical circuit. In addition, a meta module for dynamic extension of an electrical circuit is possible to add any desired number of electrical elements.
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公开(公告)号：US09673724B2
公开(公告)日：2017-06-06
申请号：US14112997
申请日：2012-04-19
申请人： Mark Davies , Mike Dommaschk , Jörg Lang , Klaus Würflinger
发明人： Mark Davies , Mike Dommaschk , Jörg Lang , Klaus Würflinger
CPC分类号： H02M5/293 , H02M5/271 , H02M5/297 , H02M7/49 , H02M2007/4835 , Y10T307/549
摘要： A matrix inverter is connected to a first and a second multi-phase A.C. voltage network. First inductive elements are connected to the first A.C. voltage network and second inductive elements are connected to the second A.C. voltage network. A switch matrix connects the ends of the first inductive elements, to the ends of the second inductive elements. The switch matrix has inverter units. A regulation arrangement is connected to control inputs of the inverter units. The matrix inverter has a first inverter unit, which is arranged between the ends of the first inductive circuit elements and earth potential. The matrix inverter has a second inverter unit, connected between the ends of the first inductive circuit elements and the ends of the second inductive circuit elements. The regulation arrangement insures that the electrical power flowing to the matrix inverter is equal to the electrical power flowing out of the matrix inverter.
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公开(公告)号：US08872466B2
公开(公告)日：2014-10-28
申请号：US13391947
申请日：2009-08-24
摘要： A synchronous-machine starting device includes an electric power conversion unit for converting supplied electric power into AC power for supply to the armature of the synchronous machine, a rotor position detection unit for detecting a position of the rotor of the synchronous machine based on an AC voltage in the armature of the synchronous machine detected by an AC voltage detection unit, an electric power conversion control unit for controlling the electric power conversion unit based on the position of the rotor detected by the rotor position detection unit, and an abnormality detection unit detecting a rotation abnormality of the synchronous machine based on the AC voltage detected by the AC voltage detection unit after supply of the field current to the rotor of the synchronous machine is started.
摘要翻译： 同步机启动装置包括：电力转换单元，用于将所供电的电力转换成用于供给同步电机的电枢的交流电;转子位置检测单元，用于基于AC检测同步电机的转子的位置; 由交流电压检测单元检测到的同步电机的电枢中的电压;电力转换控制单元，用于基于由转子位置检测单元检测到的转子的位置来控制电力转换单元;以及异常检测单元检测 开始基于在向同步电机的转子提供励磁电流之后由AC电压检测单元检测到的AC电压的同步电机的旋转异常。
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