关键词: 内置式永磁同步电机, 矢量控制, 模糊优化, 弱磁调速

Abstract:

Based on the vector control algorithm of IPMSM used in electric vehicle (EV), a fuzzy-PI controller was designed and embedded in the vector control simulation system. The fuzzy control rules suitable to the motor control system were made by referring to experts experience and motor response curve. A double-condition was made that considering both of speed and duty cycle to judge whether the flux-weakening control was necessary. The strategy that directed axis current equals to zero under the turning speed and flux-weakening control above that was utilized. The simulation of fuzzy-PI vector control was completed and compared with PI vector control. Finally, by the experiments of IPMSM, it is proved that the response performance and running stability of motor are  improved and the controllable speed range is widened. The algorithm herein will enhance the driving performance of EV. 

Key words: interior permanent magnet synchronous motor(IPMSM), vector control, fuzzy optimum, flux-weakening control