磁通切换永磁电机的空间矢量脉宽调制控制

Space-vector PWM control of flux-switching permanent magnet motor

针对磁通切换永磁电机采用电流滞环控制方法精确度不高的问题,提出采用空间矢量脉宽调制算法对磁通切换永磁电机进行控制的方法。以一台12/10极磁通切换型永磁电机作为控制对象,建立此控制方法下的电机仿真模型,并采用dSPACE平台进行实验研究。通过改变电机负载来测试此控制方法的动态调速性能及转矩响应速度。静态和动态仿真以及实验结果表明,采用空间矢量脉宽调制算法控制后,电机转速及转矩平稳,电流波形正弦度高,而在负载发生突变时转速经过一个小波动后能迅速恢复为给定值,电流也能迅速地响应变化,并保持较高的正弦度。

As a novel machine having magnet in stator, flux-switching permanent magnet （FSPM） motor, the control precision is low based on the Hysteresis current way. For solving this problem, the space vector pulse-width modulation （SVPWM） strategy is applied to control the FSPM motor in this paper. The simulation model is built by Matlab/SIMULINK, and then experiment is done using dSPACE. Load is changed to testify the good speed adjusting character and speed of torque response. Both the simulated and experimental results of static and dynamic performance verify the theoretical analysis, such as smooth torque and speed, sinusoidal current. Moreover, the motor speed returns to the set value quickly and the currents maintain sinusoidal when the load changes.