Using FPGA to Control Six-phase PMSM and Externally Excited Motors Fed by SiC Inverters
This project is to apply 1200V SiC MOSFET modules and FPGA to a 400V/100kW EV motor drive, particularly the six-phase PMSM or externally excited motor. The six-phase motor offers higher power density while the externally excited motor eliminates the needs of the rare earth.
The UTK team will work with Mercedes-Benz team to simulate the six-phase motor control and externally excited motor control. After that, the UTK team will lay out the SiC inverter, code the control algorithm in Xilinx FPGA and do the high-power test using high-power dyno in CURENT. Given SiC devices have much higher switching frequency than Si, it can potentially reduce the differential-mode current while yielding higher common-mode voltage current. The project expects to generate a mixed PWM pattern under different speed/torque scenarios to comprehensively reduce the common-mode and differential-mode current, all implemented in the high-resolution FPGA.
How WBG Can Help
The project anticipates to provide EV companies a compact, light, efficient and super high-power inverter converter, with comprehensive motor control software. More importantly it is going to offset the side effect brought by SiC devices thereby expediting WBG application in EV industry.
- Ximu Zhang
- Jared Walden