Invention Grant
- Patent Title: Arc-free DC circuit breaker
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Application No.: US15493635Application Date: 2017-04-21
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Publication No.: US10374417B2Publication Date: 2019-08-06
- Inventor: Yi Wu , Mingzhe Rong , Yifei Wu , Fei Yang , Chunping Niu
- Applicant: XI'AN JIAOTONG UNIVERSITY
- Applicant Address: CN Xi'An, Shaanxi
- Assignee: XI'AN JIAOTONG UNIVERSITY
- Current Assignee: XI'AN JIAOTONG UNIVERSITY
- Current Assignee Address: CN Xi'An, Shaanxi
- Agency: Dragon Sun Law Firm, PC
- Agent Jinggao Li, Esq.
- Priority: CN2016109933291 20161111
- Main IPC: H02H9/02
- IPC: H02H9/02 ; H01H9/54 ; H01H33/59 ; H02H3/087 ; H02H7/26 ; H01H33/14

Abstract:
The present disclosure provides an arc-free DC circuit breaker that combines magnetic induction transfer and resistive current limiting. The circuit breaker comprises a main current circuit and a transfer current circuit. The transfer current circuit has a bridge structure; with a group of unidirectional components having a breaking function, bidirectional current breaking is implemented, such that compared with the prior art, usage of the turn-off devices may be reduced to half. By controlling action sequences of the trigger gap, high-speed switch, and power semiconductor, fast switching arc-free opening of the main current circuit is implemented; meanwhile, the breaking capability of the circuit breaker is significantly improved. By virtue of the current limiting module circuit inside the transfer current circuit, the present disclosure quickly limits short-circuit fault current, and then reduces the number of parallel groups of full-controlled devices of the breaking module circuit. Compared with the existing circuit breaker structures, usage of turn-off devices and cost of the circuit breaker may be significantly reduced.
Public/Granted literature
- US20180138695A1 ARC-FREE DC CIRCUIT BREAKER Public/Granted day:2018-05-17
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