公开(公告)号：US11469685B2

公开(公告)日：2022-10-11

申请号：US17128358

申请日：2020-12-21

Applicant: Rockwell Automation Technologies, Inc.

Inventor： Zhituo Ni ,  Mehdi Narimani ,  Zhongyuan Cheng ,  Navid R. Zargari

IPC: H02M7/00 ,  H02M7/483 ,  H02M5/458 ,  H02M7/5387 ,  H02M1/12 ,  H02M1/00

Abstract: Power conversion systems and methods to control a multiphase multilevel regenerative power converter with multilevel phase circuits that individually include multiple regenerative power stages with respective power stage outputs connected in series, each of the multiple regenerative power stages comprising a DC link circuit a switching rectifier coupled between a respective transformer secondary circuit and the DC link circuit, and a switching inverter coupled between the DC link circuit and the respective power stage output, including a controller that provides inverter switching control signals to control the respective switching inverters, provides rectifier switching control signals to control the respective switching rectifiers, and controls a non-zero phase relationship between the rectifier switching control signals of the respective switching rectifiers.

公开(公告)号：US09912221B2

公开(公告)日：2018-03-06

申请号：US15227407

申请日：2016-08-03

Applicant: Rockwell Automation Technologies, Inc.

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

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

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 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.

公开(公告)号：US09627994B2

公开(公告)日：2017-04-18

申请号：US14636299

申请日：2015-03-03

Applicant: Rockwell Automation Technologies, Inc.

Inventor： Thomas Nondahl ,  Jingbo Liu ,  Zhongyuan Cheng ,  Navid Zargari

IPC: H02M7/49 ,  H02M7/5387 ,  H02M1/12 ,  H02M7/5395 ,  H02M7/483

CPC classification number: H02M7/53871 ,  H02M1/12 ,  H02M7/49 ,  H02M7/5395 ,  H02M2007/4835

Abstract: Cascade H-Bridge inverters and carrier-based level shift pulse width modulation techniques are presented for generating inverter stage switching control signals, in which carrier waveform levels are selectively shifted to control THD and to mitigate power distribution imbalances within multilevel inverter elements using either complementary carrier or complementary reference modulation techniques.

公开(公告)号：US20160344278A1

公开(公告)日：2016-11-24

申请号：US15227407

申请日：2016-08-03

Applicant: Rockwell Automation Technologies, Inc.

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

IPC: H02M1/10 ,  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 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.

Abstract translation: 提出了多电平功率转换器，功率单元和方法，用于选择性地绕过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第一和第二常闭输出控制触点 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：US09372172B2

公开(公告)日：2016-06-21

申请号：US14607540

申请日：2015-01-28

Applicant: ROCKWELL AUTOMATION TECHNOLOGIES, INC.

Inventor： Zhongyuan Cheng ,  Catalin F. Gemanaru ,  Navid Reza Zargari ,  Robert N. Bickford

IPC: G01R31/08 ,  G01N29/00 ,  G01R31/12 ,  G01N29/14 ,  G01R31/02

CPC classification number: G01N29/00 ,  G01N29/14 ,  G01N2291/2697 ,  G01R31/027 ,  G01R31/028 ,  G01R31/1209 ,  G01R31/1272

Abstract: A system for detecting partial discharge in electrical components may include a control system that may operate a drive in an industrial automation system. The industrial automation system may include the electrical components being analyzed for partial discharge. The system may also include one or more acoustic sensors that may detect one or more acoustic waveforms generated within at least one of the electrical components. The system may also include a monitoring system that may receive the acoustic waveforms from the acoustic sensors and determine whether the one electrical component is experiencing partial discharge based on the acoustic waveforms. The monitoring system may then send a notification to the control system when the one electrical component is determined to be experiencing partial discharge, such that the notification indicates that the one electrical component is experiencing partial discharge.

公开(公告)号：US20150137827A1

公开(公告)日：2015-05-21

申请号：US14607540

申请日：2015-01-28

Applicant: ROCKWELL AUTOMATION TECHNOLOGIES, INC.

Inventor： Zhongyuan Cheng ,  Catalin F. Gemanaru ,  Navid Reza Zargari ,  Robert N. Bickford

IPC: G01N29/00 ,  G01R31/02

CPC classification number: G01N29/00 ,  G01N29/14 ,  G01N2291/2697 ,  G01R31/027 ,  G01R31/028 ,  G01R31/1209 ,  G01R31/1272

Abstract: A system for detecting partial discharge in electrical components may include a control system that may operate a drive in an industrial automation system. The industrial automation system may include the electrical components being analyzed for partial discharge. The system may also include one or more acoustic sensors that may detect one or more acoustic waveforms generated within at least one of the electrical components. The system may also include a monitoring system that may receive the acoustic waveforms from the acoustic sensors and determine whether the one electrical component is experiencing partial discharge based on the acoustic waveforms. The monitoring system may then send a notification to the control system when the one electrical component is determined to be experiencing partial discharge, such that the notification indicates that the one electrical component is experiencing partial discharge.

Abstract translation: 用于检测电气部件中的局部放电的系统可以包括可以在工业自动化系统中操作驱动器的控制系统。 工业自动化系统可以包括被分析用于局部放电的电气部件。 系统还可以包括一个或多个声学传感器，其可以检测在至少一个电气部件内产生的一个或多个声波形。 系统还可以包括监测系统，其可以从声学传感器接收声波形，并且基于声波形来确定一个电气部件是否正在经历局部放电。 然后，当确定一个电气部件正在经历局部放电时，监控系统可以向控制系统发送通知，使得通知指示一个电气部件正在经历局部放电。

公开(公告)号：US20150091597A1

公开(公告)日：2015-04-02

申请号：US14043652

申请日：2013-10-01

Applicant: ROCKWELL AUTOMATION TECHNOLOGIES, INC.

Inventor： Zhongyuan Cheng ,  Catalin F. Gemanaru ,  Navid Reza Zargari ,  Robert N. Bickford

IPC: G01R31/12 ,  G01R1/07

CPC classification number: G01N29/00 ,  G01N29/14 ,  G01N2291/2697 ,  G01R31/027 ,  G01R31/028 ,  G01R31/1209 ,  G01R31/1272

Abstract: A system for detecting partial discharge in electrical components may include a control system that may operate a drive in an industrial automation system. The industrial automation system may include the electrical components being analyzed for partial discharge. The system may also include one or more acoustic sensors that may detect one or more acoustic waveforms generated within at least one of the electrical components. The system may also include a monitoring system that may receive the acoustic waveforms from the acoustic sensors and determine whether the one electrical component is experiencing partial discharge based on the acoustic waveforms. The monitoring system may then send a notification to the control system when the one electrical component is determined to be experiencing partial discharge, such that the notification indicates that the one electrical component is experiencing partial discharge.

公开(公告)号：US20220200479A1

公开(公告)日：2022-06-23

申请号：US17128358

申请日：2020-12-21

Applicant: Rockwell Automation Technologies, Inc.

Inventor： Zhituo Ni ,  Mehdi Narimani ,  Zhongyuan Cheng ,  Navid R. Zargari

IPC: H02M7/483 ,  H02M5/458 ,  H02M1/12 ,  H02M7/5387

Abstract: Power conversion systems and methods to control a multiphase multilevel regenerative power converter with multilevel phase circuits that individually include multiple regenerative power stages with respective power stage outputs connected in series, each of the multiple regenerative power stages comprising a DC link circuit a switching rectifier coupled between a respective transformer secondary circuit and the DC link circuit, and a switching inverter coupled between the DC link circuit and the respective power stage output, including a controller that provides inverter switching control signals to control the respective switching inverters, provides rectifier switching control signals to control the respective switching rectifiers, and controls a non-zero phase relationship between the rectifier switching control signals of the respective switching rectifiers.

公开(公告)号：US20180091058A1

公开(公告)日：2018-03-29

申请号：US15296287

申请日：2016-10-18

Applicant: Rockwell Automation Technologies, Inc.

Inventor： Zhongyuan Cheng ,  Navid Zargari

IPC: H02M3/28 ,  H02M1/12 ,  H02M1/32

CPC classification number: H02M3/28 ,  H02M1/12 ,  H02M1/32 ,  H02M7/483 ,  H02M7/49 ,  H02M2001/325 ,  H02M2007/4835

Abstract: Power conversion systems, control apparatus, methods and computer readable mediums to operate a multiphase multilevel inverter that includes M inverter phase leg circuits that individually include N inverter stages with corresponding stage outputs connected in series between a reference node and a corresponding inverter phase output node, M being greater than 2, N being greater than 2, in which the stage outputs of a selected set of M of the inverter stages are bypassed, where the selected set includes a single inverter stage from each of the inverter phase leg circuits, and the selected set of inverter stages are connected to secondaries of a phase shift transformer at M different phase relationships to control harmonic distortion in a current of the transformer primary in response to a suspected inverter stage fault.

公开(公告)号：US09923469B2

公开(公告)日：2018-03-20

申请号：US15149384

申请日：2016-05-09

Applicant: Rockwell Automation Technologies, Inc.

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

IPC: H02M1/14 ,  H02M3/24 ,  H02M1/36

CPC classification number: H02M3/24 ,  H02M1/12 ,  H02M1/36

Abstract: Disclosed examples include methods, power converters and damping circuits to control damping of an input filter circuit, in which a low-voltage secondary winding is wound around a common core with a primary winding connected between an AC input and a rectifier input of the converter, where the secondary winding is coupled in a series circuit with a damping resistor and a switch, and a controller selectively closes the switch with a controlled on-time at system power up and/or in response to detection of oscillation or transients in the power converter.