公开(公告)号：US09712079B2

公开(公告)日：2017-07-18

申请号：US14541029

申请日：2014-11-13

申请人： KABUSHIKI KAISHA YASKAWA DENKI

发明人： Sadao Ishii ,  Katsutoshi Yamanaka ,  Tsuyoshi Higuchi ,  Takashi Kuboyama ,  Yutaro Ihara

IPC分类号： H02M7/48 ,  H02M7/219 ,  H02M5/27 ,  H02M7/5395 ,  H02M7/797 ,  H02M1/12

CPC分类号： H02M7/219 ,  H02M5/272 ,  H02M7/48 ,  H02M7/5395 ,  H02M7/797 ,  H02M2001/123

摘要： An electric power converter according to an embodiment includes a switching unit, a controller, and a second bidirectional switch. The switching unit includes a plurality of first bidirectional switches disposed between a DC power source and an AC load or between a DC load and an AC power source. The controller controls the switching unit to perform power conversion between DC power and AC power. When turning off the second bidirectional switch disposed on a path between one pole of the DC power source or the DC load and the switching unit, the controller turns on the first bidirectional switch connected between the other pole of the DC power source and the AC load or between the other pole of the DC load and the AC power source.