基于空间矢量脉宽调制的永磁同步电机驱动技术研究

Research on SVPWM Based Permanent Magnet Synchronous Motor Drive Technology

随着永磁同步电机应用的普及,出现了很多不同的控制方法。空间矢量脉宽调制(SVPWM)是通过功率器件不同的开关模式进行切换产生特定的脉宽调制波,从而使输出的电压尽可能接近正弦波。结合SVPWM的基本原理推导出在A-B-C坐标系下的等效调制波方程,并建立仿真模块验证SVPWM算法。仿真试验结果表明,SVPWM算法的正确性和良好的控制性能,为永磁同步电机驱动技术提供了良好的理论基础。

With the popularity of permanent magnet synchronous motor applications,many different control methods have emerged.Space vector pulse width modulation(SVPWM)is used to generate a specific pulse width modulated waveform by switching different switching modes of the power device so that the output voltage is as close to a sinusoidal waveform as possible.The basic principle of SVPWM is combined to derive the equivalent modulating wave equation in ABC coordinate system,and a simulation module is built to verify the SVPWM algorithm.The simulation test results show the correctness and good control performance of the SVPWM algorithm,which provides a good theoretical basis for the permanent magnet synchronous motor drive technology.