Design and Performance of Compact Air-Cooled SiC MOSFET Inverters for Low-Power Variable Speed Drive Applications

Monday, 6 October 2014: 13:40
Expo Center, 1st Floor, Universal 20 (Moon Palace Resort)
D. M. Bellur, S. Kunin, E. Ayana, B. Palmer (Cummins Power Generation), J. Leonarski, S. Varigonda (Cummins Corporate Research and Technology), and K. Shenai (Argonne National Laboratory)
Design and experimental results of scalable and modular air-cooled power inverters using commercial SiC power MOSFETs are reported. Compared to the well-established silicon IGBT power inverter, the new SiC power MOSFET inverter offers 40% more output power and 4% higher efficiency for a 12 kW, 20 kHz air-cooled design.  A detailed design and performance tradeoff will be presented from a system-level perspective in terms of cost/kW for WBG inverter applications for vehicle electrification and power generation applications. The design is based on a simple circuit simulation model developed from measurements made on commercial packaged SiC power MOSFETs.