公开(公告)号：EP3335308A1

公开(公告)日：2018-06-20

申请号：EP16760833.0

申请日：2016-06-30

申请人： General Electric Company

发明人： SHE, Xu ,  CHOKHAWAL, Rahul, Shantilal ,  BRAY, James, William ,  SOMMERER, Timothy, John ,  ZHOU, Rui ,  ZHANG, Di

IPC分类号： H02M5/456 ,  H02J3/36 ,  H02M7/19 ,  H02M7/219 ,  H02M7/213

CPC分类号： H02M5/458 ,  H02J3/36 ,  H02M5/456 ,  H02M7/19 ,  H02M7/213 ,  H02M7/219 ,  Y02E60/60

摘要： A high-voltage direct-current (HVDC) transmission system includes an alternating current (AC) electrical source and a power converter channel that includes an AC-DC converter electrically coupled to the electrical source and a DC-AC inverter electrically coupled to the AC-DC converter. The AC-DC converter and the DC-AC inverter each include a plurality of legs that includes at least one switching device. The power converter channel further includes a commutating circuit communicatively coupled to one or more switching devices. The commutating circuit is configured to “switch on” one of the switching devices during a first portion of a cycle of the H-bridge switching circuits and “switch off” the switching device during a second portion of the cycle of the first and second H-bridge switching circuits.