Development of permanent magnet synchronous motor for electric vehicle

Electric Vehicle (EV) is a dream for the human being city traffic without exhausting gas and with low noise. Permanent magnet synchronous motor (PMSW) became at the top of AC motors in high performance drive systems such as EV. This paper describes a full digital system to control a PMSM used in EV driving by TMS320F2812 DSP. Based on the analysis of the mathematical model of PMSM, the constant torque and flux-weakening control for electric vehicle are realized. The system will be tested under various operating conditions. Experimental results show that the system has high performance comparing with the design value, it also verified the correctness of the design of PMSM and the computing platform.