公开(公告)号：US20240402260A1

公开(公告)日：2024-12-05

申请号：US18201580

申请日：2023-05-24

Applicant: Rockwell Automation Technologies, Inc.

Inventor： Zhongyuan Cheng ,  Navid Zargari ,  Yuan Xiao

IPC: G01R31/42 ,  G01R27/08 ,  G01R27/26 ,  G01R31/64

Abstract: A component includes a power suspension module that suspends providing power from a DC source to a DC link capacitor and from the capacitor to a load. A bleeding resistor is connected in parallel with the capacitor and an auxiliary power supply draws power from the capacitor. The component includes a measurement module that measures a first, second and third capacitor voltage at a first, second, time, and third time in response suspending power between the DC source and the load. The component includes a capacitance module that uses bleeding resistor resistance, the voltages and the times to determine a current capacitance of the capacitor, a capacitance comparison module that compares the current capacitance with an initial capacitance of the capacitor, and an alert module that sends an alert in response to determining that a difference between the current capacitance and the initial capacitance is above a capacitance degradation threshold.

公开(公告)号：US20180145578A1

公开(公告)日：2018-05-24

申请号：US15876812

申请日：2018-01-22

Applicant: Rockwell Automation Technologies, Inc.

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

IPC: H02M1/10 ,  H02M7/49 ,  H02M5/458 ,  H02M1/32 ,  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：US20180083514A1

公开(公告)日：2018-03-22

申请号：US15293899

申请日：2016-10-14

Applicant: Rockwell Automation Technologies, Inc.

Inventor： Yuan Xiao ,  Navid Reza Zargari ,  Lixiang Wei ,  James A. Ulrich

IPC: H02K11/33 ,  H02K11/22 ,  H02P27/06

CPC classification number: H02K11/33 ,  H02K11/022

Abstract: The disclosed apparatus provides a simple and low cost solution of reducing voltage stress on AC motors and cables in VFD fed motor systems without connecting apparatus to live circuits. Disclosed examples include apparatus to couple a motor drive to a motor, including a cable with a first end coupled with an output of a motor drive, a second end coupled with a motor, a plurality of conductors to convey an output signal of the motor drive between the first and second ends to drive the motor, and a plurality of shields, with a conductive junction to couple tap points of at least two of the shields together. Resistors can be used to connect the tap points to the conductive junction to provide an impedance in series with the corresponding shield to reduce voltage stress to the motor or the cable. In certain examples, the shields include a semiconductor material to provide an impedance between the first end and the conductive junction to reduce voltage stress to the motor or the cable.

公开(公告)号：US09625519B2

公开(公告)日：2017-04-18

申请号：US14159258

申请日：2014-01-20

Applicant: ROCKWELL AUTOMATION TECHNOLOGIES, INC.

Inventor： Yuan Xiao ,  Lixiang Wei ,  Doyle F. Busse

IPC: G01R31/34 ,  H01G2/12 ,  G01R31/28 ,  H02H7/12 ,  H02H7/16 ,  H02J3/18 ,  H02M5/458 ,  H02M1/42 ,  H02P29/024 ,  H02H7/08 ,  G01R31/42 ,  H02J3/26

CPC classification number: G01R31/2843 ,  G01R31/42 ,  H02H7/0811 ,  H02H7/1203 ,  H02H7/16 ,  H02J3/1821 ,  H02J3/26 ,  H02M1/42 ,  H02M5/458 ,  H02P29/0241 ,  Y02E40/30 ,  Y02E40/50

Abstract: The present techniques include methods and systems for detecting a failure in a capacitor bank of an electrical drive system. Embodiments include using discharge resistors to discharge capacitors in the capacitor bank, forming a neutral node of the capacitor bank. In different capacitor configurations, the neutral node is measured, and the voltage is analyzed to determine whether a capacitor bank unbalance has occurred. In some embodiments, the node is a neutral-to-neutral node between the discharged side of the discharge resistors and a neutral side of the capacitor bank, or between the discharged side of the discharge resistors and a discharged side of a second set of discharge resistors. In some embodiments, the node is a neutral-to-ground node between the discharged side of the discharge resistors and a ground potential.

公开(公告)号：US20170324333A1

公开(公告)日：2017-11-09

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: 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.

公开(公告)号：US20170178782A1

公开(公告)日：2017-06-22

申请号：US14972588

申请日：2015-12-17

Applicant: Rockwell Automation Technologies, Inc.

Inventor： Xikai Sun ,  Wei Qian ,  Shaofeng Zhang ,  Haihui Lu ,  Lixiang Wei ,  Yuan Xiao ,  Jiangang Hu ,  Richard A. Lukaszewski

IPC: H01F27/08 ,  H02M7/02 ,  H01F27/28

CPC classification number: H01F27/085 ,  H01F3/10 ,  H01F27/306

Abstract: For reducing volume requirements and magnetic flux leakage, a compact inductor includes a first planar core with a first core thickness along a first axis orthogonal to a plane of the first planar core. In addition, the inductor includes a second planar core disposed parallel to the first planar core with a second core thickness along the first axis. The inductor further includes a plurality of electrical windings disposed between and adjacent to an inside plane of the first planar core and an inside plane of the second planar core. The electrical windings may include insulated electrical wires. No magnetic teeth may be disposed between the first planar core and the second planar core. The first axis is parallel to a magnetic axis of each electrical winding.

公开(公告)号：US10389213B2

公开(公告)日：2019-08-20

申请号：US15293899

申请日：2016-10-14

Applicant: Rockwell Automation Technologies, Inc.

Inventor： Yuan Xiao ,  Navid RezA Zargari ,  Lixiang Wei ,  James A. Ulrich

IPC: H02K11/00 ,  H02K11/33 ,  H02K11/22

Abstract: Disclosed examples include apparatus to couple a motor drive to a motor, including a cable with a first end coupled with an output of a motor drive, a second end coupled with a motor, a plurality of conductors to convey an output signal of the motor drive between the first and second ends to drive the motor, and a plurality of shields, with a conductive junction to couple tap points of at least two of the shields together. Resistors can be used to connect the tap points to the conductive junction to provide an impedance in series with the corresponding shield to reduce voltage stress to the motor or the cable. In certain examples, the shields include a semiconductor material to provide an impedance between the first end and the conductive junction to reduce voltage stress to the motor or the cable.

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.

公开(公告)号：US09787213B2

公开(公告)日：2017-10-10

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 ,  H02M7/49 ,  H02M1/32

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.

公开(公告)号：US20150171733A1

公开(公告)日：2015-06-18

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: 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 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。