一种改进的永磁同步电机直接转矩控制仿真

Improved Direct Torque Control Simulation for Permanent Magnet Synchronous Motor

在转子旋转的坐标系d-q中建立永磁同步电机数学模型,建立了针对永磁同步电机的直接转矩控制系统的模型。采用空间电压矢量调制与获得空间电压矢量(SVPWM)的优化组合,实现转矩、磁链误差的精确补偿,同时保证功率器件开关频率恒定。SVM-DTC系统可有效提高永磁同步电机直接转矩控制系统的稳态和动态运行性能。

PMSM mathematics model under the d - q coordinates was build up. A novel DTC method using space vector pulse width modulation （SVPWM） with constant switching frequency was proposed. The SVM - DTC system can effectively reduce the flute and torque ripple and improve the performance of control system with stable and dynamic operation property.