公开(公告)号：US20180019084A1

公开(公告)日：2018-01-18

申请号：US15540953

申请日：2015-12-24

申请人： HYOSUNG CORPORATION

发明人： Byung Choul KIM ,  Se Hee HAN ,  Jung Ki HONG ,  Young Seong HAN

IPC分类号： H01H33/59 ,  H02H3/087 ,  H02H3/02 ,  H01H33/14 ,  H01H33/70

CPC分类号： H01H33/596 ,  H01H33/143 ,  H01H33/703 ,  H02H3/021 ,  H02H3/087

摘要： Disclosed is a DC circuit breaker capable of interrupting fault currents flowing in both forward and backward directions. The DC circuit breaker includes: a first mechanical switch for interrupting a current in a DC transmission line; a first diode connected in parallel with the first mechanical switch; a second mechanical switch, connected in series with the first mechanical switch, for interrupting a current in the DC transmission line; a second diode connected in parallel with the second mechanical switch; an LC circuit connected in parallel with the first and second mechanical switches and including a capacitor and a reactor connected in series to induce LC resonance; a first unidirectional switching device connected in parallel with the LC circuit and switching a current to induce LC resonance; and a bidirectional switching device connected in series with the LC circuit and switching currents flowing in both forward and backward directions.