1. A Series-Type Hybrid Circuit Breaker Concept for Ultrafast DC Fault Protection.
- Author
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Shen, Zheng John, Zhou, Yuanfeng, Na, Risha, Cooper, Triston, Ashi, Mahmoud Al, and Wong, Thomas
- Subjects
- *
HYBRID integrated circuits , *POWER semiconductor switches , *WIRE , *SEMICONDUCTOR switches , *FAULT currents , *PULSE width modulation - Abstract
A new series-type hybrid circuit breaker (S-HCB) concept for dc fault protection is reported that is fundamentally different from other prior-art hybrid circuit breakers (HCB) or solid-state circuit breakers (SSCB) in the literature. The S-HCB conducts its load current through metal wires instead of power semiconductor switches and curtails its fault current to near zero throughout the entire opening process of a series mechanical switch. It offers the low on-resistance of the conventional mechanical contacts for normal operation and µs-scale fault response even faster than the fast-acting SSCBs. A proof-of-concept S-HCB prototype experimentally demonstrates the interruption of a fault current of 30 A within 10 μs at a dc voltage of 600 V. The operating principle, simulation, and experimental results are discussed in this letter. [ABSTRACT FROM AUTHOR]
- Published
- 2022
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