DIRECT CURRENT CIRCUIT BREAKER AND PROTECTION SYSTEM

WIPO Patent Application WO/2022/116043

A1

A direct current circuit breaker (100) and a protection system (1), the direct current circuit breaker (100) comprises a switch module (101) comprising a first switch (K1) and a second switch (K2) connected in series between a first terminal (111) of the direct current circuit breaker (100) and a second terminal (112) of the direct current circuit breaker (100); a current injecting module (102) comprising an inductor (L1), a current injecting switch (S1), and a capacitor (C1) connected in series between the first terminal (111) of the direct current circuit breaker (100) and an intermediate node (113) between the first switch (K1) and the second switch (K2); an energy absorbing module (E1) connected in parallel with the current injecting switch (S1) and the capacitor (C1) or in parallel with the first switch (K1) and configured to limit a voltage across the capacitor (C1) to a predetermined level; and a pre-charge module (103) connected in parallel with the capacitor (C1) and configured to pre-charge the capacitor (C1).

MENG JIA (CN)
WANG ZHIXIANG (CN)
ZHANG YIBO (CN)

PCT/CN2020/133364

June 09, 2022

December 02, 2020

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ABB SCHWEIZ AG (CH)
MENG JIA (CN)
WANG ZHIXIANG (CN)
ZHANG YIBO (CN)

H02J1/00; H02H3/08; H02H7/26

CN109103854A	2018-12-28
CN107565524A	2018-01-09
CN104242229A	2014-12-24
JP2006032077A	2006-02-02
CN207251194U	2018-04-17
CN109274076A	2019-01-25
US3868550A	1975-02-25
CN111030076A	2020-04-17

KING & WOOD MALLESONS (CN)

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