Complementary Commutation-Based Π-Type DC SSCB

Reza Kheirollahi, Shuyan Zhao, Hua Zhang, Fei Lu

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations


This digest introduces a new dc solid-state circuit breaker (SSCB) using a complementary commutation technique. The proposed SSCB employs a capacitor-capacitor pair topology in a Π structure, called II-type SSCB. The capacitor-capacitor pair structure helps to achieve a reliable and fast re-closing and re-breaking process. The presented topology mostly benefits from its simplicity. It removes the voltage on passive components during the SSCB OFF-state, which enhances reliability. The II-type SSCB needs no charge/discharge circuits, and it solely depends on the dc system itself. In addition, the introduced SSCB facilities using high-power rating thyristors in the main and auxiliary branches, making it one of the best solutions for medium-voltage section. Two modified topologies are also presented to extend the applications of II-type SSCB in practice. To verify the effectiveness of the proposed topology, experiments of 500 V/50 A prototype are conducted. The results show the reaction time interval of 42 μs under load current interruption, where the peak voltage on the main and auxiliary thyristors reaches 581 V and 500 V, respectively.

Original languageEnglish (US)
Title of host publicationAPEC 2023 - 38th Annual IEEE Applied Power Electronics Conference and Exposition
PublisherInstitute of Electrical and Electronics Engineers Inc.
Number of pages6
ISBN (Electronic)9781665475396
StatePublished - 2023
Externally publishedYes
Event38th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2023 - Orlando, United States
Duration: Mar 19 2023Mar 23 2023

Publication series

NameConference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC


Conference38th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2023
Country/TerritoryUnited States

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering


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