Accession Number : ADA566841


Title :   A High Power Solid State Circuit Breaker for Military Hybrid Electric Vehicle Applications


Descriptive Note : Conference paper


Corporate Author : DRS TEST AND ENERGY MANAGEMENT INC HUNTSVILLE AL


Personal Author(s) : Pilvelait, Bruce ; Gold, Calman ; Marcel, Mike


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a566841.pdf


Report Date : Aug 2012


Pagination or Media Count : 10


Abstract : Military vehicle electrical power systems require quickly responding fault protection to prevent mission failure, vehicle damage, or personnel injury. The electromechanical contactors commonly used for HEV protection have slow response and limited cycle life, factors which could result in fuse activation and disabling of the vehicle, presenting a dangerous situation for the soldier. A protection technology not often considered is Solid State Circuit Breakers (SSCB), which have fast response and good reliability. Challenges of extremely high currents and voltages, high temperatures, and harsh conditions have prevented SSCBs from being effective in high power military vehicle electrical systems. Development of an SSCB for military vehicle power systems would increase electrical power system capacity and expand mission capability. The development of a 1.2 kV/200A Silicon-Carbide MOSFET based SSCB for combat HEVs is presented. The key innovation is packaging that minimizes losses, allows high temperature operation, and simplifies cooling requirements. We present results that show response times of less than 5 microseconds, operational ambient temperatures higher than 125 deg C, and a current density of 0.4 A/cu cm. Our next-generation design will achieve a much greater current density of 12 A/cu cm by accommodating up to 2,000 A in a 10 cu in package. We present a compelling case that SSCBs overcome electromechanical contactor limitations while providing additional capacity and mission capability.


Descriptors :   *CIRCUIT BREAKERS , *COMBAT VEHICLES , *HYBRID PROPULSION , HIGH POWER , SOLID STATE ELECTRONICS , SYMPOSIA


Subject Categories : Electrical and Electronic Equipment
      Combat Vehicles


Distribution Statement : APPROVED FOR PUBLIC RELEASE