The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 06, 2019
Filed:
Apr. 21, 2017
Xi'an Jiaotong University, Xi'an, Shaanxi, CN;
Yi Wu, Xi'an, CN;
Mingzhe Rong, Xi'an, CN;
Yifei Wu, Xi'an, CN;
Fei Yang, Xi'an, CN;
Chunping Niu, Xi'an, CN;
XI'AN JIAOTONG UNIVERSITY, Xi'An, Shaanxi, CN;
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.