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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
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.
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公开(公告)号：US11362595B1
公开(公告)日：2022-06-14
申请号：US17159039
申请日：2021-01-26
Applicant: Rockwell Automation Technologies, Inc.
Inventor： Marius G. Chis , Zhong Y. Cheng , Navid R. Zargari
Abstract: For power converter pre-charge with line synchronization, a method magnetizes a power transformer of a power converter with a supply voltage from a variable voltage variable frequency supply. The method pre-charges power cells of the power converter fed from the power transformer to a specified voltage with the supply voltage. The method further modifies a primary amplitude, a primary phase, and a primary frequency of a primary winding of the power converter with the supply voltage to match a main amplitude, a main phase, and a main frequency of a main voltage of a main power source. In response to matching the primary amplitude, the primary phase, and the primary frequency to the main amplitude, the main phase, and the main frequency, the method connects the main power source to the power transformer.
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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
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.
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14.发明申请METHOD AND APPARATUS FOR BYPASSING CASCADED H-BRIDGE (CHB) POWER CELLS AND POWER SUB CELL FOR MULTILEVEL INVERTER 有权用于多路逆变器的嵌入式H桥（CHB）电源和电源单元的方法和装置公开(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
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。
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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.
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Patent Agency Ranking
公开(公告)号：US10924026B2
公开(公告)日：2021-02-16
申请号：US16837037
申请日：2020-04-01
Applicant: Rockwell Automation Technologies, Inc.
Inventor： Navid R. Zargari , Sarah Badawi , Zhong Y. Cheng , Mehdi Narimani , Ye Zhang
Abstract: For a power supply with a reduced number of semiconductor devices, a transformer receives a three-phase primary voltage and steps the three-phase primary voltage up or down to a secondary voltage with a plurality of secondary winding sets to a plurality of first phase voltages, a plurality of second phase voltages, and a plurality of third phase voltages. A plurality of power cell sets each include a plurality of power cells cascaded connected. Each power cell comprises a rectifier and an inverter. The rectifier includes two first active switches that are serially connected and receive a phase voltage at a first switch midpoint, two second active switches that are serially connected and receive another phase voltage at a second switch midpoint, and two capacitors that are serially connected and receive another phase voltage at a capacitor midpoint between the capacitors.
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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
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.
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公开(公告)号：US20150318791A1
公开(公告)日：2015-11-05
申请号：US14698925
申请日：2015-04-29
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
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.
Abstract translation: 提供了包括整流器和开关逆变器的电动机驱动电力转换系统，其中整流器，逆变器和/或DC / DC转换器的开关装置是碳化硅开关，例如碳化硅MOSFET。 提供驱动器电路用于向碳化硅MOSFET提供双极栅极驱动信号，包括提供用于控制增强型低侧驱动器的截止状态的负栅极电压和用于控制增强模式高侧的截止状态的正栅极 - 源极电压 司机。
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19.发明申请METHOD AND APPARATUS FOR BYPASSING CASCADED H-BRIDGE (CHB) POWER CELLS AND POWER SUB CELL FOR MULTILEVEL INVERTER 有权用于多路逆变器的嵌入式H桥（CHB）电源和电源单元的方法和装置公开(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
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。
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公开(公告)号：US20220103098A1
公开(公告)日：2022-03-31
申请号：US17035889
申请日：2020-09-29
Applicant: Rockwell Automation Technologies, Inc.
Inventor： Navid R. Zargari , Zhongyuan Cheng , Mehdi Narimani , Ahmed Hisham Abuelnaga
Abstract: A system is provided for driving multiple motors. The system includes multiple cascaded H-bridge (CHB) power inverters, a DC bus, and multiple neutral point converter/inverters. Each of the multiple CHB power inverters is connected to a respective motor at one or more AC terminals of the CHB power inverter. Each of the multiple CHB power inverters includes one or more DC terminals configured to receive DC power. Each of the multiple neutral point converter/inverters is connected to a respective CHB power inverter at one or more neutral terminals of the respective CHB power inverter and connected to the DC bus.
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