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    TRANSFORMER
    1.
    发明申请
    TRANSFORMER 审中-公开

    公开(公告)号：US20170288559A1

    公开(公告)日：2017-10-05

    申请号：US15509296

    申请日：2015-10-09

    申请人： Sumitomo Electric Industries, Ltd. ,  NATIONAL UNIVERSITY CORPORATION TOYOHASHI UNIVERSITY OF TECHNOLOGY

    发明人： Hideaki Nakahata ,  Kenichi Hirotsu ,  Takashi Ohira ,  Kyohei Yamada ,  Daiya Egashira

    IPC分类号： H02M5/12 ,  H02M5/22

    CPC分类号： H02M5/12 ,  H02M3/158 ,  H02M5/22 ,  H02M5/293

    摘要： A transformer includes a front stage circuit and a rear stage circuit. As a front stage circuit, a switch series unit, which is connected in parallel to a power supply, includes odd-numbered switches and even-numbered switches alternately turned ON. Mutual connection points of the respective switches and points at both ends of the switch series unit are regarded as m nodes in total. Capacitors are provided on at least one of a first electrical path combining odd nodes to lead them to a first output port, and a second electrical path combining even nodes to lead them to a second output port. The capacitors are present so as to correspond to at least (m−1) nodes. The rear stage circuit includes an element series unit, which is composed of a pair of semiconductor elements connected in series to each other for conducting operations of mutually opposite polarities, and necessary inductors.

    TRANSFORMER
    4.
    发明申请
    TRANSFORMER 审中-公开

    公开(公告)号：US20170294829A1

    公开(公告)日：2017-10-12

    申请号：US15509313

    申请日：2015-10-09

    申请人： Sumitomo Electric Industries, Ltd. ,  NATIONAL UNIVERSITY CORPORATION TOYOHASHI UNIVERSITY OF TECHNOLOGY

    发明人： Hideaki Nakahata ,  Satoshi Hatsukawa ,  Kenichi Hirotsu ,  Takashi Ohira ,  Kyohei Yamada ,  Daiya Egashira

    IPC分类号： H02M1/08

    CPC分类号： H02M1/08 ,  H02M3/158 ,  H02M5/293

    摘要： A front stage circuit of a transformer includes a switch series unit, capacitors, and a ground electrical path. The switch series unit, connected in parallel to a power supply, includes odd-numbered/even-numbered switches configured to be alternately turned ON. Assuming that mutual connection points of the switches and points at both ends of the switch series unit are m nodes in total, and one of the points at the both ends is a ground node, the capacitors are provided on at least one of a first electrical path that combines odd nodes and leads them to a first output port, and a second electrical path that combines even nodes and leads them to a second output port, and the capacitors are present to correspond to (m−1) nodes excluding the ground node. The ground electrical path connects the ground node directly to the first output port without an interposed capacitor.

    Transformer
    5.
    发明授权
    Transformer 有权

    公开(公告)号：US10693387B2

    公开(公告)日：2020-06-23

    申请号：US14911245

    申请日：2014-08-29

    申请人： SUMITOMO ELECTRIC INDUSTRIES, LTD. ,  NATIONAL UNIVERSITY CORPORATION TOYOHASHI UNIV OF TECHNOLOGY

    发明人： Hideaki Nakahata ,  Kenichi Hirotsu ,  Nobuo Shiga ,  Takashi Ohira ,  Kyohei Yamada ,  Daiya Egashira

    IPC分类号： H02M5/12 ,  H02M5/293 ,  H02M3/06 ,  H02M5/06

    摘要： A transformer is provided between a power supply and a load, and includes a front stage circuit and a rear stage circuit each having a function of performing switching so as to alternately invert a polarity of output relative to input. The transformer further includes: a series unit provided in at least one of both circuits and composed of a pair of reactance elements connected in series to each other via a connection point; and a switch device which, with both ends of the series unit serving as a first port, causes a part between one end of the series unit and the connection point, and a part between the other end of the series unit and the connection point, to serve as a second port alternately through switching while inverting a polarity, and executes power transmission from the first port to the second port or vice versa.