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针对三相八开关容错逆变器的PMSM驱动系统, 提出模型预测转矩控制 (MPTC) 策略, 并根据驱动系统的运行模式建立数学模型.取值设计复杂性和定子电流总谐波失真 (THD) 值的降低可利用改进型的MPTC策略来实现, 且该策略还可减少磁链以及转矩脉动.利用电流反馈特性的容错控制可有效抑制直流侧母线电容分压不均衡的问题.通过仿真结果可知, 该方法不仅具有良好的动态性能、较强的抗干扰性以及鲁棒性, 还能降低其开关的损耗和定子电流的总谐波失真值, 从而保证系统的可靠性和稳定性.“,”A novel model predictive torque control (MPTC) strategy is proposed for the PMSM drive system of a threephase eight-switch fault-tolerant inverter, and a mathematical model is established based on the operating mode of the drive system. Value design complexity and stator current total harmonic distortion (THD) values can be reduced with the improved MPTC strategy, and this strategy can also reduce flux linkage and torque ripple. The fault-tolerant control of the current feedback characteristic is used to effectively suppress the imbalance of the DC side bus bar capacitor voltage division.The simulation results show that the proposed method not only has good dynamic performance, strong antiinterference and robustness, but also reduces the loss of its switching and the total harmonic distortion (THD) of the stator current, thus ensuring the system reliability and system stability.