A High Power Density SiC Motor Drive for a 6-Phase PMSM

The advancement towards all-electric transportation brings increasing demands for high power density motor drive. In this paper, a high power density SiC motor drive is proposed for a 6-phase PMSM machine. In order to achieve both the high efficiency and high power density, an electrical-thermal co-design is implemented to balance the system level trade-offs and achieve the design targets. A 6-pack 1.7 kV SiC module is selected and a compact cold plate is optimized based on the co-design method. Finite element method (FEM) simulations of the fluid and thermal domains are used to determine the efficacy of the design before performing experiments on it.