COMMON MODE VOLTAGE SUPPRESSION METHOD BASED ON MODEL PREDICTIVE CONTROL FOR A PERMANENT MAGNET SYNCHRONOUS MOTOR CONSIDERING CURRENT ERROR LIMIT

The common mode voltage (CMV) generated by the inverter will lead to bearing damage and electromagnetic interference issues. This paper studies the CMV suppression method based on finite control set model predictive control (FCS-MPC) for permanent magnet synchronous motor (PMSM) drive fed by voltage source inverter. The advantage of the method proposed in this paper is that it balances both current quality assurance and CMV suppression. The balance of the current quality and CMV suppression can be achieved by adjusting a single parameter. Meanwhile, the method can maintain low switching frequency. The performance of the proposed method was evaluated by computer simulation and compared with other methods.