低损耗双向Z源固态直流断路器设计

Translated title of the contribution: Design of Bidirectional Z-source Solid-state DC Circuit Breaker with Low Loss

Yufei Tao, Zhongzheng Zhou, Xue Jiang, Yufeng Wang, Weilin Li

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

With the continuous development of DC transmission and distribution technology, the problem of DC fault protection is becoming more prominent. As an important device for fault protection, the circuit breaker is gradually developing in the direction of low loss and fast operation. The Z-source solid-state DC circuit breaker has the characteristics of simple structure, rapid response, and arc-free disconnection, which provides a new solution to DC protection. Therefore, this paper proposes a novel bidirectional Z-source solid-state DC circuit breaker. Based on the analysis of its working principle, its design method is given, and the protection characteristics of the existing typical Z-source DC circuit breakers are compared. The novel circuit breaker uses capacitors to replace the reverse blocking effect of diodes in the traditional structure, reduces on-state loss of the circuit breaker, and realizes bidirectional energy flow through reverse-parallel thyristors, without additional detection and control circuits. And the rapid and automatic response to short-circuit faults can be realized through the design of impedance network parameters. Finally, the validity of the designed solid-state DC circuit breaker is verified by simulations and principle prototype experiments.

Translated title of the contributionDesign of Bidirectional Z-source Solid-state DC Circuit Breaker with Low Loss
Original languageChinese (Traditional)
Pages (from-to)153-161
Number of pages9
JournalDianli Xitong Zidonghua/Automation of Electric Power Systems
Volume46
Issue number4
DOIs
StatePublished - 25 Feb 2022

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