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为了提高永磁同步电机的调速性能和控制精度、改善系统的动态性能,提出运用基于转子磁链定向的不同电压空间矢量的SVPWM控制方法,根据不同坐标系下的电机数学模型、三种坐标系之间的变换以及空间矢量控制原理,运用i_d=0的控制策略,建立了一个基于电压空间矢量控制的永磁同步电机模型。通过仿真,结果表明永磁同步电机矢量控制系统改善了电机的暂态特性,控制更简单,运行更平稳,动态性能良好,可以实现更好地快速响应和速度控制特性。
In order to improve the speed regulation performance and control accuracy of the PMSM and to improve the dynamic performance of the system, a SVPWM control method based on rotor flux orientation with different voltage space vectors is proposed. According to the motor mathematical model under different coordinate systems, And the space vector control principle, the control strategy of i_d = 0 is used to establish a permanent magnet synchronous motor model based on voltage space vector control. The simulation results show that the PMSM vector control system can improve the transient characteristics of the motor. The control is simpler, the operation is more stable, the dynamic performance is good, and the response and speed control characteristics are better.