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    Redundancy of a resonant converter stage by frequency adaptation
    1.
    发明授权
    Redundancy of a resonant converter stage by frequency adaptation 有权

    公开(公告)号：US12119750B2

    公开(公告)日：2024-10-15

    申请号：US17753963

    申请日：2020-09-18

    申请人： ABB Schweiz AG

    发明人： Uwe Drofenik ,  Ki-Bum Park ,  Thomas Bernhard Gradinger

    IPC分类号： H02M3/335 ,  H02M1/00 ,  H02M3/00 ,  H02M7/493

    CPC分类号： H02M3/33523 ,  H02M1/0009 ,  H02M1/0058 ,  H02M3/01 ,  H02M3/015 ,  H02M3/33571 ,  H02M7/493

    摘要： A resonant DC/DC converter which has a first DC link, preferably including a first DC link capacitor; a DC/AC converter which has a first plurality of N>1 converter bridges connected in parallel to the first DC link; each converter bridge comprising a plurality of switches each of which may be switched between a conducting state and a non-conducting state. The resonant DC/DC converter also includes an AC intermediate circuit having an input connected to an output of the DC/AC converter and comprising: a transformer, preferably a medium frequency transformer, having a primary side and a secondary side; the primary side comprising at least one primary winding; a first plurality of N capacitors, wherein for each converter bridge, a different one from the first plurality of capacitors is connected between said converter bridge and the at least one primary winding.

    Electric-power converter
    2.
    发明授权
    Electric-power converter 有权

    公开(公告)号：US12113457B2

    公开(公告)日：2024-10-08

    申请号：US18005765

    申请日：2020-10-28

    申请人： TMEIC Corporation

    发明人： Kazuki Aoyagi ,  Issei Fukasawa

    IPC分类号： H02M7/493 ,  H02H7/12 ,  H02M1/00 ,  H02S40/32

    CPC分类号： H02M7/493 ,  H02H7/1213 ,  H02M1/0009 ,  H02S40/32

    摘要： An electric-power converter includes a plurality of direct-current power supplies, a plurality of power conversion circuits provided corresponding to the respective direct-current power supplies, an alternating-current power system configured to cause a plurality of alternating-current ends provided in the respective power conversion circuits to be directly connected in parallel through a parallel connection point, and to supply the alternating-current power output from the plurality of alternating-current ends to an alternating-current side through the parallel connection point, a plurality of grounding wires each configured to connect at least two of a plurality of direct-current negative buses between the plurality of direct-current power supplies and the plurality of power conversion circuits, to earth, and a plurality of diodes inserted in series into the respective grounding wires, and each including a cathode side connected to the corresponding direct-current negative bus and an anode side grounded.

    Switching synchronization for modular multilevel converters
    5.
    发明授权
    Switching synchronization for modular multilevel converters 有权

    公开(公告)号：US12081140B2

    公开(公告)日：2024-09-03

    申请号：US17714992

    申请日：2022-04-06

    申请人： GE Energy Power Conversion Technology Limited

    发明人： Nathaniel B. Hawes ,  Jovan Z. Bebic ,  Xiaohong Li

    IPC分类号： H02M7/483 ,  H02M7/493

    CPC分类号： H02M7/4835 ,  H02M7/493

    摘要： Provided is a modular multilevel converter and a method for synchronizing outputs of sub-modules of the converter. The modular multilevel converter includes sub-modules connected in parallel, and each sub-module generates an output. The modular multilevel converter also includes a controller that is communicatively coupled to the sub-modules. The controller controls a flow of one or more synchronizing signals between the plurality of sub-modules, such that each sub-module receives the synchronizing signals in opposite directions simultaneously, thereby controlling a synchronization of the outputs generated by the sub-modules.

    Drive device for rotary electric machine
    9.
    发明授权
    Drive device for rotary electric machine 有权

    公开(公告)号：US11973448B2

    公开(公告)日：2024-04-30

    申请号：US17212655

    申请日：2021-03-25

    申请人： DENSO CORPORATION

    发明人： Hirofumi Kinjo ,  Takashi Kashiwazaki ,  Makoto Taniguchi

    IPC分类号： H02M7/493 ,  H02M1/08 ,  H02M7/5387 ,  H02P27/08

    CPC分类号： H02P27/08 ,  H02M1/08 ,  H02M7/53871

    摘要： A drive device for a rotary electric machine includes a first inverter that has high-potential side and low-potential side switching elements corresponding to phases of the rotary electric machine and is connected to a DC power supply, a second inverter that has high-potential side and low-potential side switching elements corresponding to the phases and is connected to the first inverter via a connection line, and a controller that controls the first and second inverters so that if a percentage modulation expressed by a fundamental wave component amplitude of a phase winding voltage and a DC voltage is a threshold value or more, percentage modulations of output phase voltages of the first and second inverters are more than 1, and so that a phase difference between a phase of the output phase voltage of the first inverter section and that of the second inverter section changes depending on the percentage modulation.