Bidirectional Silicon Carbide Solid-state Circuit Breaker Development

Report No. ARL-TR-6120
Authors: D. Urciuoli
Date/Pages: September 2012; 22 pages
Abstract: Bidirectional solid-state circuit breaker (BDSSCB) technology is being developed as a versatile high-speed, high-reliability alternative to electromechanical switching devices for 600-V applications. Providing four-quadrant switch operation, the BDSSCB topology is applicable to AC and DC systems. Two BDSSCB iterations, designed to support up to a 100-A rated switch stage, were packaged with a footprint area of 32.2 cm2 (5.0 in2). Both designs were evaluated with low current switch stages in an inductive pulsed current test circuit. The self and external trip times were reduced, and the reset function was improved to support a pre-charge operation. BDSSCB conduction losses at the self trip current were also reduced to a 0.13% loss for a 600-V system.
Distribution: Approved for public release
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Last Update / Reviewed: September 1, 2012