基于SVPWM的永磁同步电机直接转矩控制系统的仿真研究

针对永磁同步电机直接转矩控制系统的磁链和转矩脉动的问题,设计了基于SVPWM的永磁同步电机直接转矩控制系统。实现了电压空间矢量的连续调节,定子磁链近似圆形,解决了常规直接转矩控制系统电磁转矩脉动较大的问题。在matlab/simulink仿真环境下,对该控制系统进行了建模与仿真,验证了控制理论的正确性和有效性。

Study on the System of PMSM Direct Torque Control Based on SVPWM

To solve the problem of torque and stator flux linkage ripples in direct torque control （DTC） for a permanent magnet synchronous motor （PMSM）, the space voltage vector pulse width modulation （SVPWM） strategy in DTC for PMSM was designed. Continuous adjustment of space voltage vector is realized. The obvious ripples in the conventional DTC system are reduced effectively because of the circular stator flux. The modeling and simulation of this system were introduced based on MATLAB/SIMULINK, which verifies the validity and the correctness of the control strategy.