基于三电平的永磁同步电机矢量控制的研究

Study on Vector Control for PMSM Based on Three-level Inverter

基于三电平的空间矢量脉宽调制技术的控制方法,对永磁同步电机进行了控制策略研究。采用将三电平空间矢量分解为六个小的两电平空间矢量的方法,转换为对两电平空间矢量的控制,简化了算法。永磁同步电机采用id=0的矢量控制方法,使用了基于电流反馈解耦,在MATLAB2007b/simulink中建立了永磁同步电机三电平SVPWM控制系统的模型,并进行了仿真实验,仿真结果表明永磁同步电机三电平SVPWM控制系统的正确性。

Based on three-level space vector pulse width modulation control method,there is a study on permanent magnet synchronous motor（PMSM） control strategy.Decompose the three-level space vector into six small two-level space vector,the control method is converted to the two-level space vector control and the algorithm is simplified.This paper presents a decoupling method with current feedback.A three-level PMSM based on SVPWM strategy is simulated using MATLAB 2007b/simulink.The simulation results show that the control system of PMSM provides excellent performance.