公开(公告)号：US20240204700A1

公开(公告)日：2024-06-20

申请号：US18485818

申请日：2023-10-12

Applicant: LG Electronics Inc.

Inventor： Bohwan SEO ,  Daejoong KIM ,  Daihyun KIM

IPC: H02P3/22 ,  D06F33/46 ,  D06F33/47 ,  D06F34/08 ,  D06F39/30 ,  H02K11/33 ,  H02M1/00 ,  H02P27/08 ,  D06F103/46

CPC classification number: H02P3/22 ,  D06F33/46 ,  D06F33/47 ,  D06F34/08 ,  D06F39/30 ,  H02K11/33 ,  H02M1/0009 ,  H02P27/085 ,  D06F2103/46 ,  H02P2201/13

Abstract: A motor driving device includes a direct current (DC) link capacitor configured to store DC power, and an inverter configured to convert the DC power stored in the DC link capacitor into AC power and supply the AC power to a motor. The motor driving device includes a shunt resistor configured to sense current flowing through the inverter and detect whether the current has reached threshold current for controlling a regenerative voltage during a braking operation. A control unit is configured to control an operation of the inverter and perform a regenerative operation when the braking operation is started. The control unit, during the regenerative operation, switches motive power of a drum connected to the motor into regenerative energy and transmit the regenerative energy to the DC link capacitor, by controlling active component current and reactive component current together in response to the reaching of the threshold current.

公开(公告)号：US09912259B2

公开(公告)日：2018-03-06

申请号：US14765420

申请日：2013-02-14

Applicant: TOSHIBA MITSUBISHI-ELECTRIC INDUSTRIAL SYSTEMS CORPORATION

Inventor： Hiroshi Ogino ,  Akinobu Ando ,  Yasuhiko Hosokawa ,  Ryota Okuyama

IPC: H02P27/06 ,  F25B49/02 ,  H02P1/02 ,  H02M1/32 ,  H02M1/36 ,  H02M5/45 ,  H02M5/452 ,  H02P1/52

CPC classification number: H02P1/022 ,  H02M1/32 ,  H02M1/36 ,  H02M5/4505 ,  H02M5/452 ,  H02P1/52 ,  H02P2201/13

Abstract: A thyristor starting device includes: a converter which converts AC power supplied from an AC power source into DC power; a DC reactor which smooths a DC current; an inverter which converts the DC power provided from the converter into AC power, and supplies the AC power to a synchronous machine; a gate pulse generation circuit which generates a gate pulse to be provided to thyristors of the converter and the inverter; a control unit which sets a phase control angle of the gate pulse to be provided to the thyristors of the converter, by controlling a current of the converter such that the DC current flowing into the DC reactor matches a current command value; and an abnormality detection unit which compares a detection value of the DC current with the current command value, and determines an abnormality in the gate pulse based on a comparison result.

公开(公告)号：US20140265972A1

公开(公告)日：2014-09-18

申请号：US13838925

申请日：2013-03-15

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Chunchun Xu ,  Allen Michael Ritter ,  Cyrus David Harbourt ,  Luis Jose Garces ,  Cheng Luo

IPC: H02P27/06

CPC classification number: H02P27/06 ,  H02M1/12 ,  H02M5/45 ,  H02M7/17 ,  H02M7/19 ,  H02M7/493 ,  H02M7/521 ,  H02P25/024 ,  H02P29/032 ,  H02P2201/13

Abstract: A load commutated inverter (LCI) drive system for a synchronous electrical machine is provided. The system may include a first supply bridge and a second supply bridge, each of which may include an alternating current to direct current (AC-to-DC) source side converter, a DC link circuit, and a DC-to-AC load side inverter. The system may include a controller for selectively controlling at least one of the first supply bridge and the second supply bridge by selective firings of SCRs. The electrical power outputted from the first supply bridge and the second supply bridge may be combined by an output delta-wye electric power transformer and supplied to the electrical machine. The LCI drive system may further include one or more input electric power transformers configured to supply an input electric power to the first supply bridge and the second supply bridge.

Abstract translation: 提供了一种用于同步电机的负载换向逆变器（LCI）驱动系统。 该系统可以包括第一供电桥和第二供电桥，每个电桥可以包括直流（AC至DC）源侧转换器，直流链路电路和直流到交流负载侧的交流电 逆变器。 该系统可以包括控制器，用于通过SCR的选择性启动来选择性地控制第一供电桥和第二供电桥中的至少一个。 从第一供电桥和第二供电桥输出的电力可以由输出三角形电力变压器组合并供给电机。 LCI驱动系统还可以包括一个或多个输入电力变压器，其被配置为向第一供电桥和第二供电桥提供输入电力。

公开(公告)号：US20130057063A1

公开(公告)日：2013-03-07

申请号：US13668660

申请日：2012-11-05

Applicant: General Electric Company

Inventor： Johannes Huber ,  Lembit Salasoo ,  Alexander Walsch ,  Michal-Wolfgang Waszak ,  Alexander Felix Fiseni ,  Stefan Brandhoff ,  Karl Kyrberg

IPC: B60L1/00

CPC classification number: H02J1/102 ,  H02P2201/13 ,  Y10T307/582 ,  Y10T307/707

Abstract: An apparatus includes a DC-link, a voltage converter, a bus voltage controller, and a supervisory controller. The voltage converter is configured to convert a first DC voltage into a second DC voltage based on a command signal and based on an adjustment signal and to supply the second DC voltage to the DC-link. The bus voltage controller is configured to iterate calculation of the adjustment signal to communicate each iterated calculation of the adjustment signal to the voltage converter. The supervisory controller is configured to iterate calculation of the command signal and to communicate each iterated calculation of the command signal to the voltage converter and to the bus voltage controller. A frequency of the bus voltage controller to communicate each iterated calculation of the adjustment signal is higher than a frequency of the supervisory controller to communicate each iterated calculation of the command signal.

Abstract translation: 一种装置包括直流链路，电压转换器，总线电压控制器和监控控制器。 电压转换器被配置为基于指令信号并且基于调整信号将第一直流电压转换为第二直流电压，并将第二直流电压提供给直流链路。 总线电压控制器被配置为迭代调整信号的计算，以将调节信号的每次迭代计算传送到电压转换器。 监控控制器被配置为迭代命令信号的计算，并且将命令信号的每个迭代计算传送到电压转换器和总线电压控制器。 总线电压控制器的频率通过每个迭代计算的调整信号高于监控器的频率来传达每次迭代计算的命令信号。

公开(公告)号：US20110316490A1

公开(公告)日：2011-12-29

申请号：US13228759

申请日：2011-09-09

Applicant: Yongqiang Lang ,  Navid Reza Zargari ,  Manish Pande ,  Bin Wu

Inventor： Yongqiang Lang ,  Navid Reza Zargari ,  Manish Pande ,  Bin Wu

IPC: H02P9/10 ,  H02M5/44

CPC classification number: H02J3/386 ,  H02M1/32 ,  H02M5/4505 ,  H02P9/10 ,  H02P9/48 ,  H02P21/00 ,  H02P2101/15 ,  H02P2201/13 ,  Y02E10/763

Abstract: Switching control systems and methods are presented for controlling power conversion systems to provide electrical power to a grid or other load in which a synchronous machine is driven by a wind turbine or other prime mover to provide generator power to a switching type current source converter (CSC), with a current source rectifier (CSR) of the CSC being switched to provide d-axis control of the synchronous machine current based on grid power factor feedback, and with a current source inverter (CSI) of the CSC being switched to provide leading firing angle control and selective employment of dumping resists to dissipate excess generator energy in a fault mode when a grid voltage drops below a predetermined level.

Abstract translation: 提出了开关控制系统和方法，用于控制功率转换系统以向电网或其他负载提供电力，其中同步电机由风力涡轮机或其它原动机驱动以向开关型电流源转换器（CSC）提供发电机功率 ），CSC的电流源整流器（CSR）被切换以提供基于电网功率因数反馈的同步电机电流的d轴控制，并且CSC的电流源逆变器（CSI）被切换以提供前导 触发角度控制和选择性使用倾卸抗蚀剂，以在电网电压低于预定水平时以故障模式消散过多的发电机能量。

公开(公告)号：US20100253255A1

公开(公告)日：2010-10-07

申请号：US12636422

申请日：2009-12-11

Applicant: Vilanguppam Thathachary Ranganathan ,  Amit Kumar Jain

Inventor： Vilanguppam Thathachary Ranganathan ,  Amit Kumar Jain

IPC: H02P6/14 ,  H02P6/08

CPC classification number: H02P27/14 ,  H02P4/00 ,  H02P23/0027 ,  H02P2201/13

Abstract: A hybrid synchronous motor drive circuit and method operates in one or two or more modes based on the speed of the synchronous machine. In a first mode, the synchronous machine is driven at a relatively low frequency by a current controlled voltage source inverter (VSI). In a second mode, the synchronous machine is driven at a relatively high frequency by a load commutated inverter (LCI) in tandem with the VSI. In the second mode, the LCI acts as the main power source for controlling the machine and determining machine torque and speed. The VSI acts as a harmonic compensator by compensating the dominant harmonic currents fed to the machine from the LCI such that the synchronous machine will see sinusoidal currents and thereby sinusoidal voltages at its terminals. The VSI also functions to provide sufficient reactive power at fundamental frequency so that the thyristors in the inverter are load commutated.

公开(公告)号：US4698739A

公开(公告)日：1987-10-06

申请号：US928145

申请日：1986-11-07

Applicant: Derek A. Paice

Inventor： Derek A. Paice

IPC: H02M7/48 ,  H02M7/49 ,  H02M7/00

CPC classification number: H02M7/49 ,  H02P2201/13

Abstract: The present invention relates to an AC motor drive including two sets of inverters, wherein one transformer is converted on the output of one of the two inverters, the output of the transformer being connected in series with the output of the other inverter.

Abstract translation: 本发明涉及一种包括两组逆变器的交流电动机驱动器，其中一个变压器在两个逆变器之一的输出上转换，变压器的输出与另一个逆变器的输出串联。

公开(公告)号：US4602198A

公开(公告)日：1986-07-22

申请号：US705961

申请日：1985-02-26

Applicant: Herbert W. Weiss ,  Loren H. Walker

Inventor： Herbert W. Weiss ,  Loren H. Walker

IPC: H02J3/18 ,  H02M5/45 ,  H02M7/525 ,  H02P25/02 ,  H02P27/06 ,  H02P5/40

CPC classification number: H02J3/1892 ,  H02M5/4505 ,  H02M7/525 ,  H02P25/024 ,  H02P27/06 ,  H02P2201/13 ,  H02P2207/01

Abstract: A system for controlling the operation of an alternating current induction motor having windings supplied by electrical power from the polyphase alternating current source includes a load commutated inverter circuit which is connected between the power source and the induction motor for furnishing electrical power to the motor. Controllers responsive to a command signal and a feedback signal indicative of motor operating parameters control the operation of said load commutated inverter circuit. There is further provided a fixed capacitor circuit connected between the windings of the motor for supplying reactive volt amperes (VARs) to said load commutated inverter circuit and said motor. Finally, there is provided a variable VAR generator connected between the motor windings for supplying VARs to said load commutated inverter circuit and said motor in response to the output of a third feedback control path which is also responsive to a command signal and prescribed operating parameter(s) of said load and/or said commutated inverter.

公开(公告)号：US4426611A

公开(公告)日：1984-01-17

申请号：US372749

申请日：1982-04-28

Applicant: Paul M. Espelage ,  David L. Lippitt ,  Leland C. Tupper

Inventor： Paul M. Espelage ,  David L. Lippitt ,  Leland C. Tupper

IPC: H02P27/06 ,  H02M5/45 ,  H02P23/00 ,  H02P25/02 ,  H02P5/34

CPC classification number: H02M5/4505 ,  H02P25/024 ,  H02P2201/13

Abstract: A control system for powering an AC load such as a polyphase synchronous motor having at least two sets of three phase (3.phi.) windings. Each three phase winding set is powered by an independently operable six pulse load commutated inverter drive including a source side converter and a load side converter coupled together by means of a DC link and wherein the source side converter and the load side converter are operated in accordance with respective current and load angle regulators which respond to torque command signals generated by speed regulators. The two motor drives operate concurrently in separate control channels which are substantially independent of one another with the exception that in one embodiment, which is the preferred embodiment, the speed regulator and the motor terminal overvoltage regulator are cross-coupled to effect a balanced torque command and motor terminal voltage from each channel while still providing for continued motor operation by one of the motor drive channels in the event that the other becomes inoperative for any reason. In a second embodiment, one of two redundant speed regulators is adapted to provide a common torque command to both channels with the other speed regulator taking over in the event of the failure of said one speed regulator.

Abstract translation: 一种用于为诸如具有至少两组三相（3phi）绕组的多相同步电动机的交流负载供电的控制系统。 每个三相绕组由一个可独立操作的六个脉冲负载换向逆变器驱动器供电，该驱动器包括通过直流链路耦合在一起的源极侧转换器和负载侧转换器，其中源侧转换器和负载侧转换器按照 具有响应由调速器产生的转矩指令信号的各自的电流和负载角调节器。 两个电动机驱动器在独立的控制通道中同时运行，这些控制通道基本上彼此独立，除了在一个实施例中，优选实施例中，速度调节器和电动机端子过电压调节器交叉耦合以实现平衡转矩指令 并且每个通道的电动机端子电压同时由于任何原因而在另一个电机驱动通道不能工作的情况下继续由马达驱动通道运行。 在第二实施例中，两个冗余速度调节器中的一个适于在两个通道中提供公共转矩指令，而另一个调速器在所述一个速度调节器发生故障的情况下接管。

公开(公告)号：US4344025A

公开(公告)日：1982-08-10

申请号：US70725

申请日：1979-08-29

Applicant: Toshiaki Okuyama ,  Yuzuru Kubota ,  Hiroshi Nagase ,  Katsunori Suzuki

Inventor： Toshiaki Okuyama ,  Yuzuru Kubota ,  Hiroshi Nagase ,  Katsunori Suzuki

IPC: H02P23/00 ,  H02J3/18 ,  H02P6/00 ,  H02P6/06 ,  H02P27/05 ,  H02P5/40

CPC classification number: H02J3/1892 ,  H02P23/08 ,  H02P25/26 ,  H02P27/06 ,  H02P21/09 ,  H02P2201/13

Abstract: A motor control system controls to be constant a reactive power consumed by a motor load equipment having a motor to be driven by power supplied from an AC power source and a couple of thyristor converters for regulating the power supplied to the motor. To this end, the motor control system is comprised of a reactor power detector for detecting the reactive power of the motor load equipment, a command circuit for issuing a command to specify the rated reactive power consumed in the rated load running of the motor load equipment, and a reactive power control unit which receives an output signal from the command circuit and an output signal from the reactive power detector to produce a firing phase command signal depending on a difference between them. The firing phase command signal from the reactive power control unit is applied to an automatic pulse phase shifter to control the firing phase of the thyristor converters.

Abstract translation: 电动机控制系统控制由电动机负载设备消耗的无功功率的恒定，所述电动机负载设备具有通过从AC电源提供的电力驱动的电动机和用于调节供应到电动机的功率的一对晶闸管转换器。 为此，电动机控制系统包括用于检测电动机负载设备的无功功率的电抗器功率检测器，用于发出用于指定在电动机负载设备的额定负载运行中消耗的额定无功功率的命令的指令电路 以及无功功率控制单元，其接收来自命令电路的输出信号和来自无功功率检测器的输出信号，以根据它们之间的差异产生触发相位命令信号。 来自无功功率控制单元的点火相位指令信号被施加到自动脉冲移相器以控制晶闸管转换器的点火相位。