改进滑模变结构的永磁同步电机控制方法

Control Method of PMSM Based on Improved Sliding Mode Variable Structure

永磁受到多种因素影响,具有复杂变化特性。传统方法存在抗干扰能力弱、系统响应时间长,稳定性差等问题。为了获得更优的磁同步电机控制效果,提出了改进滑模变结构的永磁同步电机控制方法,在Matlab 2014的平台上与其他方法进行了仿真对比实验。结果表明,所提方法可以准确实现磁同步电机进行控制,当负载发突变时,能够在短时间内做出响应,抗负载扰动能力强,提高了系统动态性能。实验结果验证了所提方法对永磁同步电机控制的有效性和优越性。

Permanent magnet synchronous motor （PMSM） has advantages of high efficiency, and energy saving, however, it is affected by many factors, and has the characteristics of complex changes. The traditional method has some problems, such as weak anti-interference ability, long system response time, poor stability and so on. In order to obtain the better control effect of PMSM, a new control method of PMSM by using improved sliding mode variable structure is proposed in this paper. The simulation experiment is carried out on Matlab 2014 and the results of the experiment are compared with those obtained by other methods. The results show that the proposed method can control the PMSM accurately, and the response time is short when load is in a mutation, and it has strong ability to resist the load disturbance and improve the dynamic performance of the system. The experimental results verify effectiveness and superiority of the proposed method in the control of permanent magnet synchronous motor.