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    FILTER AND AFE POWER CELL PHASE CONTROL
    21.
    发明申请
    FILTER AND AFE POWER CELL PHASE CONTROL 有权

    公开(公告)号：US20210058003A1

    公开(公告)日：2021-02-25

    申请号：US16546911

    申请日：2019-08-21

    Applicant: Rockwell Automation Technologies, Inc.

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

    IPC: H02M5/458 ,  H02M1/08 ,  H02M1/44

    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, the individual 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.

    Reduced semiconductor device power cell voltage drive
    22.
    发明授权
    Reduced semiconductor device power cell voltage drive 有权

    公开(公告)号：US10651760B1

    公开(公告)日：2020-05-12

    申请号：US16393613

    申请日：2019-04-24

    Applicant: Rockwell Automation Technologies, Inc.

    Inventor： Zhong Y. Cheng ,  Navid R. Zargari ,  Ye Zhang

    IPC: H02M5/45 ,  H02M5/458 ,  H01F30/14

    Abstract: For a power supply with a reduced number of semiconductor devices, a phase shifting transformer receives a three-phase primary voltage and steps the three-phase primary voltage one of up and down to a secondary voltage with a plurality of secondary winding sets. There is phase shifting between different secondary winding sets. A plurality of power cell sets each comprise a plurality of power cells cascaded connected, and each power cell receives one of a single phase and a three-phase voltage of a distinct secondary winding set of the phase shifting transformer. Each power cell comprises no more than eight power semiconductor devices organized as a rectifier and an inverter. Each power semiconductor device is one of a diode and an active switch. Each power cell set generates one phase of a three-phase alternating current output.

    POWER CONVERSION SYSTEM
    27.
    发明申请
    POWER CONVERSION SYSTEM 有权

    公开(公告)号：US20170302244A1

    公开(公告)日：2017-10-19

    申请号：US15132477

    申请日：2016-04-19

    Applicant: Rockwell Automation Technologies, Inc.

    Inventor： Zhongyuan Cheng ,  Navid R. Zargari

    IPC: H03H7/20 ,  H02M1/14 ,  H02M1/12

    CPC classification number: H03H7/20 ,  H02M1/12 ,  H02M1/14 ,  H02M5/14 ,  H02M7/487 ,  H02M7/49

    Abstract: For power conversion, a power conversion system includes a plurality of power converters and a phase shifting transformer. The phase shifting transformer includes 3-phase primary windings, a core and a plurality of m secondary winding groups. Each of the secondary winding groups includes n secondary windings in electromagnetic communication with a corresponding primary winding and feeding the plurality of power converters. Phase angle sets of the secondary winding groups are all different with a non-zero secondary winding phase shift between any two secondary winding groups.

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