H-bridge Based Bidirectional Z-Source DC Circuit Breaker with Improved Device Stress and Automatic Reclosing Capability

DC microgrid is gaining more popularity due to the advent and advancements in renewable energy sources, however, there are some challenges in its development such as protection of dc equipment from short-circuit faults. This paper proposes a modified solid-state dc circuit breaker for bidirectional...

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Bibliographic Details
Published inIECON 2021 – 47th Annual Conference of the IEEE Industrial Electronics Society pp. 1 - 6
Main Authors I, Venkata Raghavendra, Naik, B. Satish, Sreekanth, T.
Format Conference Proceeding
LanguageEnglish
Published IEEE 13.10.2021
Subjects
bidirectional loads
Circuit breakers
Coupled inductor
dc circuit breaker
dc microgrid
fault protection
Prototypes
Rectifiers
Renewable energy sources
Semiconductor diodes
Topology
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Summary:DC microgrid is gaining more popularity due to the advent and advancements in renewable energy sources, however, there are some challenges in its development such as protection of dc equipment from short-circuit faults. This paper proposes a modified solid-state dc circuit breaker for bidirectional power flow protection that reduces current stress on semiconductor devices during commissioning and reclosing. And also a method of system re-breaking or reclosing depending on the fault existence has been proposed. This circuit breaker topology has been verified with varying system parameters using the spice simulation tool. The protection of dc system by the proposed circuit breaker is experimentally verified for a system rating of 100V/10A.
ISSN:2577-1647
DOI:10.1109/IECON48115.2021.9589108