知搜-全球专利检索

  1. Login
  2. Sign Up

Search Results

18 records (took 0.016 seconds)

    POWER CONVERSION DEVICE
    1.
    发明申请
    POWER CONVERSION DEVICE 有权

    公开(公告)号：US20210391807A1

    公开(公告)日：2021-12-16

    申请号：US17417774

    申请日：2019-03-01

    Applicant: Mitsubishi Electric Corporation

    Inventor： Kimiyuki KOYANAGI ,  Masashi SHIGEMITSU

    IPC: H02M7/483 ,  H02M7/49

    Abstract: In a power conversion device in which cell converters are connected in series, each cell converter includes: main circuit conductors connecting switching elements and a capacitor to each other; a bypass portion disposed between two external terminals connected to other cell converters; external output conductors connecting the external terminals and the main circuit conductors to each other; and bypass connection conductors connecting the external output conductors and the bypass portion to each other. The bypass connection conductors or the external output conductors are disposed so as to oppose each other at a high-potential side and a low-potential side thereof. The conductors are bent so as to have portions at which currents in parts of the conductors have the same direction. Thus, mutual inductances and self-inductances are increased, whereby short-circuit current flowing to the bypass portion at the time of double failures is suppressed.

    POWER CONVERSION DEVICE
    4.
    发明申请
    POWER CONVERSION DEVICE 审中-公开
    电源转换器件

    公开(公告)号：US20170012521A1

    公开(公告)日：2017-01-12

    申请号：US15120683

    申请日：2015-02-26

    Applicant: MITSUBISHI ELECTRIC CORPORATION ,  TOSHIBA MITSUBISHI-ELECTRIC INDUSTRIAL SYSTEMS CORPORATION

    Inventor： Takushi JIMICHI ,  Kimiyuki KOYANAGI ,  Sadao FUNAHASHI ,  Taichiro TSUCHIYA ,  Yasuhiro SHINOMIYA

    IPC: H02M1/32

    CPC classification number: H02M1/32 ,  H02M1/38 ,  H02M7/483 ,  H02M2001/322 ,  H02M2001/325 ,  H02M2007/4835

    Abstract: A power conversion device in which a plurality of converter cells are connected in series with one another. The converter cells each include two or more semiconductor devices, an energy storage element and a bypass element including a constituent element for setting the bypass element to be close-circuited by detecting abnormality of a converter cell, and including a constituent element for controlling, among the semiconductor devices, a semiconductor device connected in parallel with the bypass element to set in a turn-on state, at the same time when the bypass element is set close-circuited or in advance of its close circuit.

    Abstract translation: 一种电力转换装置，其中多个转换器单元彼此串联连接。 转换器单元各自包括两个或更多个半导体器件，能量存储元件和旁路元件，其包括用于通过检测转换器单元的异常来设置旁路元件来闭合的构成元件，并且包括用于控制的构成元件 半导体器件，与旁路元件并联连接以设置为导通状态的半导体器件，同时旁路元件被设置为接近或其闭合电路之前。

    POWER CONVERSION DEVICE
    5.
    发明公开
    POWER CONVERSION DEVICE 审中-公开

    公开(公告)号：US20240251519A1

    公开(公告)日：2024-07-25

    申请号：US18289899

    申请日：2021-05-13

    Applicant: Mitsubishi Electric Corporation

    Inventor： Yusuke HIGAKI ,  Takushi JIMICHI ,  Kimiyuki KOYANAGI ,  Takuya KAJIYAMA ,  Akito NAKAYAMA

    IPC: H05K7/14 ,  H02M3/00

    CPC classification number: H05K7/14322 ,  H02M3/003 ,  H05K7/14329

    Abstract: Unit converters each comprises a capacitor, a switching element having a flat surface on one side, a P-pole connection conductor where a second terminal hole at one end for fixing an electrode corresponding to a P-pole of the switching element and a first terminal hole at the other end for fixing a terminal of the capacitor are formed, and an N-pole connection conductor where a second terminal hole at one end for fixing an electrode corresponding to a N-pole of the switching element and a first terminal hole at the other end for fixing a terminal of the capacitor are formed. The unit-converters each including the connection conductors arranged to overlap in the thickness direction with their insulation maintained make the cooling surfaces of the switching elements be opposed to each other with a cooling device therebetween.

    ELECTRIC POWER CONVERSION DEVICE
    7.
    发明申请
    ELECTRIC POWER CONVERSION DEVICE 有权
    电力转换装置

    公开(公告)号：US20160190924A1

    公开(公告)日：2016-06-30

    申请号：US14650741

    申请日：2013-09-02

    Applicant: MITSUBISHI ELECTRIC CORPORATION ,  TOSHIBA MITSUBISHI-ELECTRIC INDUSTRIEAL SYSTEMS CORPORATION

    Inventor： Kimiyuki KOYANAGI ,  Takushi JIMICHI ,  Satoshi AZUMA ,  Yasuhiko HOSOKAWA ,  Shinzo TAMAI ,  Sadao FUNAHASHI ,  Kotaro HIGASHI

    IPC: H02M3/158

    CPC classification number: H02M3/158 ,  H02M1/0845 ,  H02M7/483 ,  H02M2001/0006 ,  H02M2001/325 ,  H02M2007/4835

    Abstract: An electric power conversion device includes a plurality of cell converters connected in cascade and including main circuits, drive circuits, and self-feeding devices for supplying power to the drive circuits by being supplied with power from the main circuits. The drive circuit is supplied with power via a first feed line from the self-feeding device in the corresponding cell converter, and supplied with power from the self-feeding device in another cell converter via a second feed line on which an insulation input/output circuit is provided. When the self-feeding device is abnormal, the drive circuit is supplied with power from the self-feeding device in the other cell converter, whereby the electric power conversion device continuously provides a desired output.

    Abstract translation: 电力转换装置包括串联连接的多个电池转换器，包括主电路，驱动电路和用于通过从主电路供电来向驱动电路供电的自供电装置。 驱动电路通过来自相应电池转换器中的自供电装置的第一馈电线供电，并通过第二馈电线从另一电池转换器中的自供电装置供电，绝缘输入/输出 提供电路。 当自动馈送装置异常时，驱动电路从另一个电池转换器中的自供给装置供电，由此电力转换装置连续地提供期望的输出。

    POWER CONVERSION DEVICE
    8.
    发明申请
    POWER CONVERSION DEVICE 有权

    公开(公告)号：US20220385164A1

    公开(公告)日：2022-12-01

    申请号：US17770659

    申请日：2019-12-13

    Applicant: Mitsubishi Electric Corporation

    Inventor： Kimiyuki KOYANAGI

    IPC: H02M1/00 ,  H02M3/156

    Abstract: The power conversion device includes: a series unit composed of two switching elements; and a plurality of DC capacitors each connected in parallel to the series unit. The two switching elements and the plurality of DC capacitors are disposed in this order such that positive terminals and negative terminals thereof are aligned on a same side. Among busbars making connection between the respective DC capacitors and the switching elements, a busbar other than the busbar connected to the DC capacitor disposed at a farthest position has an inductance adjustment portion providing a bypass.

    POWER CONVERSION APPARATUS
    9.
    发明申请
    POWER CONVERSION APPARATUS 有权

    公开(公告)号：US20210044215A1

    公开(公告)日：2021-02-11

    申请号：US17040551

    申请日：2019-05-15

    Applicant: Mitsubishi Electric Corporation

    Inventor： Ryoji TSURUTA ,  Takushi JIMICHI ,  Kimiyuki KOYANAGI

    IPC: H02M7/219 ,  H02M7/483 ,  H02M1/32

    Abstract: A submodule includes a bridge circuit including two main power semiconductors connected in series for performing power conversion by on/off control and an electric energy storage element connected in parallel with a path of the two main power semiconductors connected in series, a bypass unit including a bypass power semiconductor), a bypass unit drive device to drive the bypass unit, a first external terminal, and a second external terminal. The first external terminal is connected to a node between the two main power semiconductors. The power conversion apparatus further includes an optical power-feed system for feeding power to the bypass unit drive device.

    ELECTRIC POWER CONVERSION DEVICE
    10.
    发明申请
    ELECTRIC POWER CONVERSION DEVICE 审中-公开

    公开(公告)号：US20180076734A1

    公开(公告)日：2018-03-15

    申请号：US15561660

    申请日：2016-03-29

    Applicant: Mitsubishi Electric Corporation

    Inventor： Takushi JIMICHI ,  Kimiyuki KOYANAGI ,  Takeshi KIKUCHI

    IPC: H02M7/483 ,  H02M7/217 ,  H02M7/00

    CPC classification number: H02M7/483 ,  H02M1/32 ,  H02M7/003 ,  H02M7/2173 ,  H02M7/5388 ,  H02M2001/0003 ,  H02M2001/0054 ,  H02M2001/325 ,  H02M2007/4835

    Abstract: In an electric power conversion device which performs power conversion between multiphase AC and DC, a first converter cell of a first arm for each phase of a power converter includes: a capacitor; a Leg A having upper and lower arms having switching elements; and a Leg B having upper and lower arms one of which has a switching element and the other of which has only a diode, and a second converter cell of a second arm includes: a capacitor; and a Leg Aa having upper and lower arms having switching elements. A control device has a steady mode and a protection mode. When short-circuit between DC terminals of the power converter is detected, the control device switches from the steady mode to the protection mode, turns off all the switching elements of the first converter cell of the first arm, and controls the second converter cell of the second arm so as to perform reactive power compensation operation.

Patent Agency Ranking