Evaluation of Bidirectional Silicon Carbide Solid-State Circuit Breaker v3.2

Report No. ARL-MR-0845
Authors: D. Urciuoli
Date/Pages: July 2013; 20 pages
Abstract: Although solid-state switches can be actuated several orders of magnitude faster than electromechanical ones, most solid-state circuit breakers require some form of sensing, filtering, triggering, latching, and reset capability for control. These functions can contribute to undesirable delays that limit performance. Modifications were made to the design of a small-scale 600-V, 5-A silicon carbide (SiC) junction field-effect transistor (JFET) based bidirectional solid-state circuit breaker (BDSSCB) to reduce self-trigging and reset response times, and increase rated current to 10 A. Additional current rating increases are possible, while maintaining the small-scale BDSSCB footprint area of 32.2 cm2 (5.0 in2), using custom power stage designs. Experimental results are presented for both BDSSCBs evaluated in a pulsed current test circuit.
Distribution: Approved for public release
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Last Update / Reviewed: July 1, 2013