ELECTRICAL FAULT CURRENT LIMITER

THE OBJECTIVE OF PHAE I IS TO DETERMINE BY AN ANALYTICAL STUDY THE OPTIMUM DESIGN APPROACH, OR APPROACHES, FOR SOLID-STATE ELECTRICAL FAULT CURRENT LIMITERS FOR THE CURRENT RANGE OF 15 TO 5000 AMPERES. THE ANALYTICAL TRADEOFF STUDY WILL INCLUDE THE FOLLOWING TASKS: 1) DEFINITION OF CURRENT LIMITER REQUIREMENTS, 2) DEFINITION OF TRADEOFF ANALYSIS CRITERIA, 3) DEFINITION OF CANDIDATE CURRENT LIMITER DESIGNS, 4) DEFINITION OF CHARACTERISTICS OF CANDIDATE CURRENT LIMITERS,5) EVALUATION OF CHARACTERISTICS OF CANDIDATE CURRENT LIMITERS, AND 6) REPORT PREPARATION. IT IS ANTICIPATED THAT GENERAL REQUIREMENTS WILL BE BASED ON SPECIFICATION MIL-E-917, AND THAT SPECIFIC REQUIREMENTS WILL BE DEFINED FOR SEMICONDUCTOR APPLICATION AND FUNCTIONAL CHARACTERISTICS. THE EXPECTED TRADEOFF CRITERIA ARE CHARACTERISTICS SUCH AS SIZE, WEIGHT, COST, OPERATING TIME AND RELIABILITY. CANDIDATE DESIGNS ARE EXPECTED TO BE BASED ON SOLID-STATE POWER SWITCHING CIRCUITS THAT UTILIZE BIPOLAR TRANSISTORS, FIELD EFFECT TRANSISTORS, OR GATE-TURN-OFF SILICON CONTROLLED RECIFIERS. PRELIMINARY DESIGNS WILL BE DETAILED TO THE EXTENT NECESSARY TO DEFINE CHARACTERISTICS OF TRADEOFF CRITERIA. THE REPORT WILL INCLUDE THE RESULTS OF ALL PHASE I TASKS INCLUDING ANALYSIS OF CANDIDATE CHARACTERISTICS.