公开(公告)号：US10302688B2

公开(公告)日：2019-05-28

申请号：US15410000

申请日：2017-01-19

Applicant: Rockwell Automation Technologies, Inc.

Inventor： Jiangang Hu ,  Zhijun Liu ,  Jeffrey D. McGuire ,  Lixiang Wei

IPC: G01R27/18 ,  G01R31/02 ,  G01R31/40 ,  B60L3/00 ,  B60L3/04 ,  B60L3/12 ,  G01R31/08 ,  H02H3/16 ,  H02H7/12

Abstract: Power conversion systems, disclosed examples include power conversion systems, ground fault detection apparatus and methods to detect and identify ground faults in a power conversion system using AC coupling to sense a system voltage to determine a leakage flux linkage, and to identify a faulted converter phase based on a phase shift angle of the leakage flux linkage.

公开(公告)号：US09973137B2

公开(公告)日：2018-05-15

申请号：US15283507

申请日：2016-10-03

Applicant: Rockwell Automation Technologies, Inc.

Inventor： Yogesh Patel ,  Lixiang Wei

IPC: H02P29/68 ,  H02M1/32 ,  H02M1/42 ,  H02M7/217 ,  H02M7/219 ,  H02P27/06 ,  H02M1/00

CPC classification number: H02P29/68 ,  H02M1/32 ,  H02M1/4216 ,  H02M1/4225 ,  H02M7/217 ,  H02M7/219 ,  H02M2001/0022 ,  H02M2001/327 ,  H02P27/06 ,  Y02B70/126

Abstract: Methods and apparatus are presented for controlling a power converter to protect input filter inductors from overheating, in which an active front end (AFE) rectifier is operated in a boost mode to provide a boosted DC voltage at a derated output current value selected according to the DC bus voltage boost amount corresponding to a maximum load condition for which the filter inductors will not overheat.

公开(公告)号：US09960723B2

公开(公告)日：2018-05-01

申请号：US15173767

申请日：2016-06-06

Applicant: Rockwell Automation Technologies, Inc.

Inventor： Shaofeng Zhang ,  Haihui Lu ,  Yogesh P. Patel ,  Ahmed Mohamed Sayed Ahmed ,  Lixiang Wei ,  Richard Lukaszewski

IPC: H02M1/14 ,  H02P27/06 ,  H02M7/217 ,  H02M1/12 ,  H02M1/00

CPC classification number: H02P27/06 ,  H02M1/126 ,  H02M1/32 ,  H02M1/36 ,  H02M5/4585 ,  H02M7/217 ,  H02M7/219 ,  H02M2001/0009 ,  Y02B70/1441

Abstract: Disclosed examples include power conversion systems, computer readable mediums and methods for mitigating input filter resonance, in which a controller operates an active front end (AFE) rectifier in a first mode to turn a single rectifier switching device on and off and measures a filter voltage or current signal while all of the rectifier switches are off. The controller determines a resonant frequency based on a transient response of the measured voltage or current signal, and selectively adjusts a rectifier control parameter to mitigate filter resonance based on the resonant frequency.

公开(公告)号：US20180026544A1

公开(公告)日：2018-01-25

申请号：US15722071

申请日：2017-10-02

Applicant: Rockwell Automation Technologies, Inc.

Inventor： Kevin Baumann ,  Richard Lukaszewski ,  Rangarajan Tallam ,  Lixiang Wei ,  Lee Gettelfinger ,  Garron Morris ,  Bruce Weiss ,  Neil Gollhardt ,  Navid R. Zargari ,  William Brumsickle ,  Robert Wright Reese ,  Stephen E. Denning

IPC: H02M5/458 ,  H02P27/06 ,  H02M1/08

CPC classification number: H02M5/458 ,  H02M1/08 ,  H02M5/4585 ,  H02P27/06 ,  Y02B70/1483

Abstract: Motor drive power conversion systems are provided including a rectifier and a switching inverter, wherein the switching devices of the rectifier, the inverter and/or of a DC/DC converter are silicon carbide switches, such as silicon carbide MOSFETs. Driver circuits are provided for providing bipolar gate drive signals to the silicon carbide MOSFETs, including providing negative gate-source voltage for controlling the off state of enhancement mode low side drivers and positive gate-source voltage for controlling the off state of enhancement mode high side drivers.

公开(公告)号：US20170131341A1

公开(公告)日：2017-05-11

申请号：US15410000

申请日：2017-01-19

Applicant: Rockwell Automation Technologies, Inc.

Inventor： Jiangang Hu ,  Zhijun Liu ,  Jeffrey D. McGuire ,  Lixiang Wei

IPC: G01R31/02 ,  G01R31/40

CPC classification number: G01R31/025 ,  B60L3/0069 ,  B60L3/04 ,  B60L3/12 ,  B60L2220/42 ,  G01R31/086 ,  G01R31/40 ,  H02H3/16 ,  H02H7/1216 ,  Y02T10/646

Abstract: Power conversion systems, disclosed examples include power conversion systems, ground fault detection apparatus and methods to detect and identify ground faults in a power conversion system using AC coupling to sense a system voltage to determine a leakage flux linkage, and to identify a faulted converter phase based on a phase shift angle of the leakage flux linkage.

公开(公告)号：US20160248334A1

公开(公告)日：2016-08-25

申请号：US14630866

申请日：2015-02-25

Applicant: Rockwell Automation Technologies, Inc.

Inventor： Yogesh P. Patel ,  Lixiang Wei

IPC: H02M5/458 ,  H03H7/01 ,  H03H7/06

CPC classification number: H02M1/126 ,  H02M5/4585 ,  H03H7/06 ,  H03H7/1741

Abstract: Power conversion systems, filter circuits and integrated filter resistor and inductor apparatus are presented, in which a damping resistor is integrated with a filter inductor by winding joined resistor winding portions proximate to one another at least partially around a filter inductor core leg to form an integrated filter resistor and inductor apparatus for interconnection with filter capacitors to provide an input filter or an output filter for a motor drive or other power conversion system.

Abstract translation: 提供了功率转换系统，滤波器电路和集成的滤波电阻器和电感器装置，其中阻尼电阻器与滤波器电感器集成，通过将接合的电阻器绕组部分至少部分地围绕滤波器电感器芯腿彼此缠绕以形成集成 用于与滤波电容器互连的滤波电阻器和电感器装置，以提供用于电机驱动器或其它功率转换系统的输入滤波器或输出滤波器。

公开(公告)号：US09425705B2

公开(公告)日：2016-08-23

申请号：US14628334

申请日：2015-02-23

Applicant: Rockwell Automation Technologies, Inc.

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

IPC: H02M7/49 ,  H02M1/32 ,  H02M5/458

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

Abstract: 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 one or more 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.

Abstract translation: 提出了多电平功率转换器，功率单元和方法，用于选择性地旁路多电平逆变器电路的功率级，其中单个继电器或接触器包括耦合在给定功率单元开关电路和给定功率之间的一个或多个常闭输出控制触点 电池输出以及耦合在功率级输出端的常开旁路触点与本地或中央控制器通电给定电池的继电器或接触器的线圈绕过该电池。

公开(公告)号：US09383399B2

公开(公告)日：2016-07-05

申请号：US14043065

申请日：2013-10-01

Applicant: ROCKWELL AUTOMATION TECHNOLOGIES, INC.

Inventor： Lixiang Wei ,  Jiangang Hu ,  Jeffrey D. McGuire

IPC: G01R31/14 ,  G01R31/02 ,  G01R31/42

CPC classification number: G01R31/025 ,  G01R31/42

Abstract: A HRG ground fault detector and method for detecting a ground fault in a High Resistance Ground (HRG) system are provided. The HRG ground fault detector in one example embodiment includes a first input A coupled to a first phase PHA of the HRG system, a second input B coupled to a second phase PHB, and a third input C coupled to a third phase PHC, with the HRG ground fault detector generating a simulated neutral voltage VN′ from the first phase PHA, the second phase PHB, and the third phase PHC. The simulated neutral voltage VN′ has a zero voltage potential when the first phase PHA, the second phase PHB, and the third phase PHC are equal. The HRG ground fault detector further compares the simulated neutral voltage VN′ to a predetermined fault voltage threshold, and detects a HRG ground fault if the simulated neutral voltage VN′ exceeds the threshold.

Abstract translation: 提供了一种用于检测高阻地（HRG）系统中的接地故障的HRG接地故障检测器和方法。 一个示例性实施例中的HRG接地故障检测器包括耦合到HRG系统的第一相PHA的第一输入A，耦合到第二相PHB的第二输入B和耦合到第三相PHC的第三输入C， HRG接地故障检测器从第一相PHA，第二相PHB和第三相PHC产生模拟中性点电压VN'。 当第一相PHA，第二相PHB和第三相PHC相等时，模拟中性点电压VN'具有零电压电位。 HRG接地故障检测器还将模拟中性点电压VN'与预定的故障电压阈值进行比较，并且如果模拟中性点电压VN'超过阈值，则检测HRG接地故障。

公开(公告)号：US20160111967A1

公开(公告)日：2016-04-21

申请号：US14978571

申请日：2015-12-22

Applicant: Rockwell Automation Technologies, Inc.

Inventor： Lixiang Wei ,  Yuan Xiao ,  Haihui Lu ,  Douglas B. Weber

IPC: H02M5/458

CPC classification number: H02M5/458 ,  H02M7/49 ,  H02M2001/325

Abstract: Multilevel inverters, power cells and bypass methods are presented in which a power cell switching circuit is selectively disconnected from the power cell output, and a bypass which is closed to connect first and second cell output terminals to selectively bypass a power stage of a multilevel inverter, with an optional AC input switch to selectively disconnect the AC input from the power cell switching circuit during bypass.

Abstract translation: 提出了多电平逆变器，功率单元和旁路方法，其中功率单元开关电路与功率单元输出选择性地断开，并且闭合的旁路连接第一和第二单元输出端子以选择性地旁路多电平逆变器的功率级 具有可选的AC输入开关，用于在旁路期间选择性地断开AC电源与电源开关电路的输入。

公开(公告)号：US20150229257A1

公开(公告)日：2015-08-13

申请号：US14696648

申请日：2015-04-27

Applicant: Rockwell Automation Technologies, Inc.

Inventor： Haihui Lu ,  Zhenhuan Yuan ,  Lixiang Wei ,  Russel J. Kerkman ,  Richard Lukaszewski ,  Ahmed Mohamed Sayed Ahmed

IPC: H02P9/00

CPC classification number: H02P9/006 ,  F03D7/0224 ,  F03D7/0284 ,  F03D7/0288 ,  F03D7/04 ,  F03D9/255 ,  H02H7/06 ,  H02H7/12 ,  H02H9/002 ,  H02J3/386 ,  H02J2003/001 ,  H02P9/007 ,  H02P9/102 ,  H02P9/48 ,  H02P2101/15 ,  Y02E10/723 ,  Y02E10/763

Abstract: A double fed induction generator (DFIG) converter, methods and computer readable mediums are presented in which rotor side current spikes are attenuated by selectively activating at least one series damping circuit to conduct current through a series damping circuit resistance coupled in series between one or more DFIG rotor leads and a grid side converter in response to a grid fault occurrence or a grid fault clearance, and selectively bypassing the series damping circuit resistance after activating the series damping circuit.

Abstract translation: 提出了一种双馈感应发电机（DFIG）转换器，方法和计算机可读介质，其中通过选择性地激活至少一个串联阻尼电路来使转子侧电流尖峰衰减，以将电流传导通过串联耦合在一个或多个 DFIG转子引线和电网侧转换器响应于电网故障发生或电网故障间隙，并且在启动串联阻尼电路之后选择性地旁路串联阻尼电路电阻。