Study on the the control effect of zero voltage vector in DTC and a modified strategy of DTC of PMSM. The simulation experiment results show that they could restrain torque ripple availably.

• 研究了零电压矢量在直接转矩控制中的作用和一种改进的永磁同步电机直接转矩控制策略，仿真结果表明将零电压矢量引入控制和改进的策略都能明显抑制系统转矩脉动。