公开(公告)号：US20190207599A1

公开(公告)日：2019-07-04

申请号：US16223590

申请日：2018-12-18

申请人： GENERAL ELECTRIC COMPANY

发明人： Marius Mechlinski ,  Zhihui Yuan ,  Jingkui Shi ,  Stefan Schroeder

IPC分类号： H03K17/0812 ,  G01R19/165 ,  G01R31/327

CPC分类号： H02M1/32 ,  H02M1/088 ,  H02M2001/325 ,  H03K17/0822 ,  H03K17/18 ,  H03K17/74 ,  H03K2217/0027

摘要： Embodiments of the present disclosure relate to a detection device for a circuit comprising a plurality of switch devices coupled in series. The detection device comprises a plurality of detecting circuits, wherein each detecting circuit is integrated with a gate driver of a corresponding switch device. Each detecting circuit comprises a voltage divider and a signal processor. The voltage divider is coupled in parallel with the corresponding switch device and comprises a plurality of voltage dividing components coupled in series. The signal processor is coupled with one of the voltage dividing components and configured to receive a divided voltage across the voltage dividing component and output an output signal indicating the voltage across the switch device. Embodiments of the present disclosure also relate to a system and method for protecting series-connected switch devices.

公开(公告)号：US20190181747A1

公开(公告)日：2019-06-13

申请号：US16142827

申请日：2018-09-26

申请人： Toyota Jidosha Kabushiki Kaisha

发明人： Toshihiro Yasuda

IPC分类号： H02M1/36 ,  H02M1/08

CPC分类号： H02M1/36 ,  H02M1/08 ,  H02M3/1584 ,  H02M2001/325 ,  H02M2003/1586 ,  H02P27/08

摘要： A converter control system includes first and second step-up converters and first and second electronic control units. The first and second electronic control units are respectively configured to generate first and second PWM driving signals for the first and second step-up converters. The second electronic control unit is configured to determine whether a first carrier and a second carrier are synchronous with each other based on the first PWM driving signal, a first duty ratio, and the second carrier. The second electronic control unit is configured to, when the second electronic control unit determines that the first carrier and the second carrier are not synchronous with each other, shut down the second step-up converter and then restart generation of the second PWM driving signal with the second carrier synchronous with the first carrier with the use of the first PWM driving signal and the first duty ratio.

公开(公告)号：US20180358891A1

公开(公告)日：2018-12-13

申请号：US16007968

申请日：2018-06-13

申请人： Bertrand Diotte ,  Jason Rau ,  Hassan lhs

发明人： Bertrand Diotte ,  Jason Rau ,  Hassan lhs

IPC分类号： H02M1/32 ,  H02M3/158 ,  H02M1/08

CPC分类号： H02M1/32 ,  H02M1/08 ,  H02M3/1584 ,  H02M2001/325

摘要： A deglitch circuit, or look-back, may be used to reduce or avoid reacting to a transient overvoltage situation by a voltage regulator. The voltage regulator may delay reacting to an overvoltage situation unless the overvoltage situation persists for more than a first programmable number of cycles.

公开(公告)号：US20180337590A1

公开(公告)日：2018-11-22

申请号：US15775246

申请日：2016-11-10

申请人： Marquette University

发明人： Jiangbiao He ,  Nabeel A.O. Demerdash

IPC分类号： H02M1/32 ,  H02M7/5395 ,  H02P27/08 ,  H02M7/487 ,  H02P29/028 ,  H02M1/08

CPC分类号： H02M7/487 ,  H02M1/32 ,  H02M2001/325 ,  H02M2001/327

摘要： Systems and methods of fault tolerant power conversion include an inverter with a plurality of inverter phase legs. Each phase leg includes a positive switch, a negative switch, and a bi-directional midpoint switch. Redundant phase leg includes a positive redundant switch connected between the positive switches and the bi-directional midpoint switches. The redundant phase leg includes a negative redundant switch connected between the negative switches and the bi-directional midpoint switches. Upon detection of a fault condition in at least one switch of the plurality of inverted phase legs, one of the positive redundant switch and the negative redundant switch is closed to bypass at least one switch with the fault condition to maintain operation of the power converter.

公开(公告)号：US20180331616A1

公开(公告)日：2018-11-15

申请号：US16042025

申请日：2018-07-23

申请人： FUJI ELECTRIC CO., LTD.

发明人： Masaki HIRAKATA ,  Akihiro ODAKA

IPC分类号： H02M1/08 ,  H02M7/48 ,  H03K17/687

CPC分类号： H02M1/08 ,  H02M1/32 ,  H02M7/48 ,  H02M7/5387 ,  H02M2001/0006 ,  H02M2001/0009 ,  H02M2001/325 ,  H03K17/567 ,  H03K17/687 ,  H03K2217/0081

摘要： A power conversion device, that includes a drive circuit 11a that drives a switching element 4 included in an upper-arm for one of three phases, a drive circuit 11b that drives a switching element 5 included in a lower-arm for the one phase, and a control circuit 9 that transmits a control signal to the drive circuits 11a, 11b, is provided. The power conversion device includes power supply circuits 12a, 12b that provide power to the drive circuits 11a, 11b, respectively, a low-voltage power supply 6 that supplies power to one of the power supply circuits, 12a, and a high-voltage power supply 1 that supplies power to the other of the power supply circuits, 12b. Accordingly, it is possible to reliably protect a system: by realizing minimal redundancy of the power supply, the power supply generation circuit, etc.; and by realizing the short-circuit mode at the time of error occurrence.

公开(公告)号：US10084387B2

公开(公告)日：2018-09-25

申请号：US15522954

申请日：2016-04-11

申请人： ZHEJIANG UNIVERSITY

发明人： Zheng Xu ,  Shijia Wang ,  Huangqing Xiao

IPC分类号： H02J3/36 ,  H02M5/458

CPC分类号： H02M5/4585 ,  H02J3/36 ,  H02J2003/365 ,  H02M7/7575 ,  H02M2001/325 ,  H02M2007/4835 ,  Y02E60/60

摘要： The present invention discloses an LCC and MMC series-connected HVDC system with DC fault ride-through capacity, comprising rectifier and inverter linked by DC transmission line; Both the positive pole and the negative pole of the rectifier and the inverter consist of line-commutated converter and modular converter in series-connection; the modular converter adopts one MMC or several parallel-connected MMCs. The present invention has the advantage of low cost, low power loss and high reliability of the LCC, as well as flexible control, low harmonics and AC voltage support of the MMC. Further, the present invention is able to deal with DC fault by itself, hence additional DC fault clearing equipment is not needed. As a result, the present invention is suitable for the field of long-distance large-capacity power transmission and has broad development potential.

公开(公告)号：US10081255B2

公开(公告)日：2018-09-25

申请号：US15493254

申请日：2017-04-21

申请人： Toyota Jidosha Kabushiki Kaisha

发明人： Kenji Yamada ,  Toshihiro Yamamoto ,  Masashi Mizuno

IPC分类号： H02P29/024 ,  B60L11/18 ,  H02M7/5387 ,  H02P27/08 ,  H02M1/088 ,  H02M1/32 ,  H02M1/00

CPC分类号： B60L11/1803 ,  B60L50/51 ,  H02M1/088 ,  H02M1/32 ,  H02M7/53871 ,  H02M2001/0009 ,  H02M2001/325 ,  H02P27/085 ,  H02P29/024 ,  H02P29/0241

摘要： A vehicle includes an electronic control unit configured to perform control of an inverter by switching a plurality of controls including: first PWM control of generating a first PWM signal of a plurality of switching elements by comparison of voltage commands of respective phases based on a torque command of a motor with a carrier voltage and switching the plurality of switching elements; and second PWM control of generating a second PWM signal of the plurality of switching elements based on a modulation factor of a voltage and a voltage phase based on the torque command and the number of pulses in a predetermined period of an electrical angle of the motor and switching the plurality of switching elements. The electronic control unit is configured to limit execution of the second PWM control when an abnormality occurs in at least one of the current sensor or the voltage sensor.

公开(公告)号：US20180212532A1

公开(公告)日：2018-07-26

申请号：US15832761

申请日：2017-12-05

申请人： Delta Electronics (Shanghai) Co., Ltd.

发明人： Desheng Guo ,  Weiqiang Zhang ,  Baoyu Liu

IPC分类号： H02M7/25 ,  H02M7/00 ,  H02M7/219

CPC分类号： H02M7/25 ,  H02M7/003 ,  H02M7/219 ,  H02M2001/325 ,  H02M2007/4835

摘要： Disclosed is a power module cascaded converter system, a control sub-system thereof includes a master controller, and is provided with switch modules corresponding one-to-one to power modules. For each switch module, before the corresponding power module is removed, a driver circuit thereof can drive the switch circuit into a closed state through a control signal sent from the master controller, so as to bypass the power module. An optical-electric module in the power module cascaded converter system converts an optical signal input from an optical fiber into an electrical signal. With a first control port of each switch module, which is detachably and electrically coupled to a second control port of the power module, the power module cascaded converter system can support insertion and extraction of the power module without cutting off electricity, thereby adding flexibility and convenience for replacing power modules.

公开(公告)号：US20180159316A1

公开(公告)日：2018-06-07

申请号：US15736147

申请日：2015-06-23

申请人： Mitsubishi Electric Corporation

发明人： Takuo ARAMAKI

IPC分类号： H02H7/26 ,  H02M7/217 ,  H02M1/08 ,  H02M1/32

CPC分类号： H02H7/268 ,  H02H3/08 ,  H02H7/12 ,  H02H7/1216 ,  H02J1/00 ,  H02M1/08 ,  H02M1/32 ,  H02M7/217 ,  H02M7/483 ,  H02M2001/325 ,  H02M2007/4835 ,  Y02E60/60

摘要： A power conversion device used in a DC power transmission system having a multipolar configuration includes: a self-excited AC/DC converter configured to convert electric power between an AC system and a main line; and a controller. The controller is configured to: receive an input of a current value between a neutral point and a DC terminal of the AC/DC converter; control an operation of the AC/DC converter; and control a switch to be opened and closed, the switch being provided between the DC terminal and the neutral point. When the current value is equal to or greater than a predetermined threshold value, the controller stops a plurality of cells and subsequently closes a bypass switch. When the current value is equal to or greater than a predetermined threshold value, the controller opens the switch.

公开(公告)号：US20180145578A1

公开(公告)日：2018-05-24

申请号：US15876812

申请日：2018-01-22

申请人： Rockwell Automation Technologies, Inc.

发明人： Navid R. Zargari ,  Yuan Xiao ,  Lixiang Wei ,  Zhongyuan Cheng

IPC分类号： H02M1/10 ,  H02M7/49 ,  H02M5/458 ,  H02M1/32 ,  H02M1/00

CPC分类号： H02M1/10 ,  H02M1/32 ,  H02M5/458 ,  H02M5/4585 ,  H02M7/49 ,  H02M2001/007 ,  H02M2001/325 ,  Y10T307/549 ,  Y10T307/658 ,  Y10T307/685

摘要： Multilevel power converters, power cells and methods are presented for selectively bypassing a power stage of a multilevel inverter circuit, in which a single relay or contactor includes first and second normally closed output control contacts coupled between a given power cell switching circuit and the given power cell output, along with a normally open bypass contact coupled across the power stage output, with a local or central controller energizing the coil of the relay or contactor of a given cell to bypass that cell.