A Novel Double-Sided Cooling Inverter Leg for High Power Density EV Based on Customized SiC Power Module

Abstract

Double-sided cooling (DSC) power module is particularly attractive for EV due to its low parasitic inductance and high thermal performance. This paper proposed a novel double-ended input terminals double-sided cooling SiC power module inverter leg. It has lower parasitic, lower thermal resistance and symmetrical current sharing. The simulations of thermal resistance and parasitic are compared for different types of module structures in this paper. The results shown that the double-ended structure has the optimal parasitic inductance with 10.6nH. Details of the DSC module layout, fabrication processes are discussed for a 294A/1200V module. The static and dynamic experimental results verify the design.