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Research on Dual 12-Phase 12-Slot Winding Permanent-Magnet Propulsion System Based on All-SiC Power Module

All-SiC power modules have lately received great attention for multiphase motor propulsion systems due to their low radiator temperature and high efficiency. However, the application of all-SiC power modules for dual 12-phase 12-slot winding permanent-magnet propulsion systems remains an ongoing challenge, owing to synchronous operation. In an effort to overcome this challenge, this article quantified and compared the all-SiC power module with Si-insulated gate bipolar transistor (IGBT) to underpin the all-SiC power module as the preferred choice for propulsion inverter application. The motor mathematical model and control strategy were illustrated in detail. Moreover, the crucial features of the propulsion inverter and synchronous control were elucidated by the theoretical and experimental analysis. The synchronous switching of the dual all-SiC power modules allowed the same slot windings to achieve excellent operation. The experimental results were given for the operation of propulsion systems based on all-SiC power modules. The motor operations under different speeds were investigated as well. Finally, the fault tolerance of the dual 12-phase 12-slot permanent magnet synchronous motor (PMSM) was validated under an open circuit.