电动汽车用永磁同步电机超前角弱磁控制

提出了一种电动汽车用内置式永磁同步电机超前角弱磁控制方案,实现了高倍、平滑扩速和降低控制系统成本的目的.该控制方案以电机端电压对变频器直流母线电压的利用率为基础,通过构建一个新的电压指数外环,从而确定定子电流矢量角的偏移度,最终实现弱磁扩速的目的.该方案弱磁过渡平滑,且与电机参数无关,并能实现电动汽车用永磁同步电机的高...

A Leading Angle Field Weakening Control Method for Permanent Magnet Synchronous Motor on Electric Vehicles

This paper presented a method of leading angle flux-weakening control for interior permanent magnet synchronous motor (IPMSM) on the electric vehicles, and achieved the purposes of high times, smooth and wide-speed operation and low cost of control systems. The control algorithm based on the utilization of inverter''s DC bus voltage determines the deviation degree of the rotor synchronization rotation angle by constructing a new index loop of voltage and achieves the purpose of extending the operation speed range. The transition of flux-weakening is smooth, and the algorithm of leading angle flux-weakening control has nothing with parameters and realizes the high-time flux-weakening control of IPMSM. It not only meets the requirements of wide speed operation, but also reduces the cost of the whole system. The effectiveness of the proposed control scheme is verified by computer simulation and experimental results.