As the PID regulator has disadvantages and the direct torque control has higher torque and flux linkage ripples and unfixed switching frequency, the SVM (Space Vector Modulated) direct torque control for PMSM(Permanent Magnet Synchronous Motor) based on ADRC (Active-Disturbance Rejection Control) is proposed. The ADRC speed regulator is designed with the given speed and real speed as inputs and the given electromagnetic torque as output to improve the anti-interference ability of system. The realization of SVM is analyzed. The errors of torque and stator flux linkage are accurately compensated and ripples are reduced,while the constant switching frequency of inverter is guaranteed. Simulative and experimental results verify its feasibility and effectiveness.%针对PID调节器的不足及传统直接转矩控制转矩和磁链脉动大、开关频率不恒定等问题,提出基于自抗扰控制器(ADRC)永磁同步电机电压空间矢量调制(SVM)直接转矩控制方法.以给定转速和实际转速作为输入信号,给定电磁转矩作为输出信号,设计了ADRC速度调节器,提高系统的抗干扰能力.在此基础上,详细分析了SVM的实现方式,实现对转矩和磁链偏差的精确补偿,降低转矩和磁链脉动,并保证逆变器开关频率恒定.仿真和实验结果验证了方法的可行性和有效性.
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