摘  要：基于永磁同步电机直接转矩控制系统定子磁链幅值、转矩角和转矩的控制规律，针对实验用电机提出了一种简单的电压矢量选择策略。仿真结果表明：与开关表控制相比，本文提出的电压矢量选择策略可始终满足系统对转矩的控制要求，消除因开关表失效引起的不合理转矩脉动，无需转子位置信息，易于实现。
关键词：永磁同步电机；直接转矩控制；开关表；电压矢量

Abstract:  Based on control principles of the amplitude of stator flux, toque angle and torque of permanent magnet synchronous motor (PMSM) direct torque control (DTC) system, a simplified voltage vector selection strategy for tested PMSM was proposed in this paper. Simulation results show: compared with switching table, voltage vector selection strategy proposed in this paper can always satisfy the control of torque, suppress unreasonable torque ripple, doesn′t need rotor position information and is easy to implement.
Key words:  permanent magnet synchronous motor; direct torque control; switching table; voltage vector