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    DIRECT CURRENT CIRCUIT BREAKER
    1.
    发明公开
    DIRECT CURRENT CIRCUIT BREAKER 审中-公开

    公开(公告)号：EP3200213A4

    公开(公告)日：2018-06-13

    申请号：EP15844233

    申请日：2015-06-05

    申请人： MITSUBISHI ELECTRIC CORP

    发明人： HORINOUCHI KATSUHIKO ,  SATO MOTOHIRO ,  TAKAHASHI KAZUKI ,  KAMIMAE RYO ,  TOKOYODA SHO

    IPC分类号： H01H33/59

    CPC分类号： H02H3/087 ,  H01H9/54 ,  H01H33/59 ,  H01H33/596 ,  H01H33/6661 ,  H01H77/02

    摘要： A DC circuit breaker includes: a mechanical switch (2) provided on an electrical path (1) through which a direct current flows; and a semiconductor switch (20) connected in parallel with the mechanical switch (2). The mechanical switch (2) includes a gas disconnector (3) and a vacuum circuit breaker (4) connected in series. Normally, the direct current flows through the mechanical switch (2). When interrupting the direct current, the vacuum circuit breaker (4) is made nonconductive to allow the direct current to be commutated to the semiconductor switch (20), and subsequently the gas disconnector (3) and the semiconductor switch (20) are made nonconductive. A vacuum circuit breaker (4) having a low withstand voltage can be used.

    DC BREAKER DEVICE
    2.
    发明公开
    DC BREAKER DEVICE 审中-公开
    DC-SCHUTZSCHALTER

    公开(公告)号：EP3082208A4

    公开(公告)日：2017-08-16

    申请号：EP14869389

    申请日：2014-04-11

    申请人： MITSUBISHI ELECTRIC CORP

    发明人： HORINOUCHI KATSUHIKO ,  SATO MOTOHIRO

    IPC分类号： H02H3/087 ,  H01H9/54 ,  H01H33/59 ,  H03K17/0812

    CPC分类号： H02H3/38 ,  H01H9/54 ,  H01H9/547 ,  H01H33/596 ,  H01H2009/544 ,  H02H3/087 ,  H03K17/08128 ,  H03K17/567

    摘要： In a DC circuit breaker device (100), first and second semiconductor switches (2L, 2R) are connected in series on a main circuit line such that current-carrying directions of the switches are opposite to each other. A first diode (3L) is connected in anti-parallel with the first semiconductor switch (2L), and a second diode (3R) is connected in anti-parallel with the second semiconductor switch (2R). First and second mechanical circuit breakers (4L, 4R) are connected in series with each other and in parallel with the whole of the first and semiconductor switches (2L, 2R). First and second backward current generation circuits (7L, 7R) are connected in series with each other and in parallel with the whole of the first and second mechanical circuit breakers (4L, 4R). An injection switch (8) is connected between a node (N3) between the first and second mechanical circuit breakers (4L, 4R) and a node (N4) between the first and second backward current generation circuits (7L, 7R).

    摘要翻译： 在直流断路器装置（100）中，第一和第二半导体开关（2L，2R）在主电路线上串联连接，使得开关的电流方向彼此相反。 第一二极管（3L）与第一半导体开关（2L）反并联连接，第二二极管（3R）与第二半导体开关（2R）反并联连接。 第一和第二机械断路器（4L，4R）彼此串联连接并与整个第一和半导体开关（2L，2R）并联。 第一和第二反向电流产生电路（7L，7R）彼此串联连接并且与整个第一和第二机械断路器（4L，4R）并联。 在第一和第二机械断路器（4L，4R）之间的节点（N3）与第一和第二反向电流产生电路（7L，7R）之间的节点（N4）之间连接注入开关（8）。