DEMONSTRATION OF A 75 kW SILICON-CARBIDE BASED GENERATOR CONTROLLER FOR POWER DENSE APPLICATIONS

The latest military vehicles have been developed with on-board high voltage (600Vdc) power generation systems. The generator controller is an essential part of such a power generation system. It interfaces and converts generator 3-phase ac voltages into vehicle dc bus voltage and is the primary component responsible for vehicle bus stability. Compliance of the controller’s output dc voltage with MIL-PRF-GCS600A(ARMY) is a prerequisite for stability. This paper presents the design, and test results of a 75kW continuous operation power converter achieving a volumetric power density above 7kW/liter at an 85°C coolant temperature. Details regarding power quality and thermal management are discussed. Performance results will be provided, including assessment of the voltage regulation requirements as part of MIL-PRF-GCS600A, efficiency (97%), and temperature results.