一种改进的永磁同步电机矢量控制系统的研究

针对采用传统PI电流、转速调节器的永磁同步电机(PMSM)矢量控制系统中存在启动转速、转矩波动大,电流跟踪效果不理想等问题,分别设计了采用积分分离的电流调节器和采用模糊一PI双模控制策略的速度调节器,并在Matab环境下搭建了模型进行仿真分析。仿真结果表明,该控制系统较传统控制系统具有更好的动静态特性,最后针对所提出的方法进行实验验证,实验结果进一步证明了该结论的正确性。

Research on an Improved PMSM Vector Control System

The traditional current and speed PI control method of permanent magnet synchronous motor(PMSM) vector control system has problems such as large fluctuation of start-up torque and speed,and bad tracking performance of current and so on.Aiming at these problems,the current regulator which adopts integral separation control strategy and speed regulator with fuzzy-PI double mode control strategy are designed,and simulation model was built in Matlab /Simulation.The simulation result indicates that this improved control system has better dynamic and static characteristic than traditional control system.Finally,experiments based on the proposed method are done to verify the correctness of the conclusion further.