永磁同步电机弱磁控制研究

Research of flux-weakening control for permanent magnet synchronous motor

为提高永磁同步电机(PMSM)的调速范围,使其在基频以上获得更好的动静态性能,选用梯度下降法的弱磁控制策略,对永磁同步电机的弱磁控制系统和弱磁控制原理进行分析。在现有磁同步电机矢量控制的基础上,在MATLAB/SIMULINK环境中搭建PMSM弱磁控制仿真模型,实现PMSM的弱磁调速控制。仿真结果说明该系统增大了永磁同步电机的调速范围,证明该仿真系统的有效性。

To improve the speed range of permanent magnet synchronous motor（PMSM）and obtain the better dynamic and static performance on the fundamental frequency,the gradient descent method was selected to analyze the control system and its principle.Based on the existing permanent magnet synchronous motor vector control,the simulation model of PMSM flux-weakening control was established in MATLAB/SIMULINK environment,which achieved the flux-weakening speed control of PMSM.Simulation results show that the system increases the speed range of permanent magnet synchronous motor,and prove the validity of the simulation system.