Cogging Torque Reduction Method of Permanent Magnet Motor Based on Optimization of Stator Structure
In order to reduce the cogging torque of permanent magnet motor,the method of stator teeth open-ing auxiliary slot to optimize structure was studied.The mechanism and suppressing method of cogging torque was analyzed theoretically.By using finite element analysis software JMAG,the simulation model of surface mounted permanent magnet synchronous motor with 9-slot 6-pole was established,and auxiliary slots was set up on the stator teeth.The influence of the number,position angle,depth and width on the cogging torque of slot was analyzed,and the influence of simultaneous changes in dual parameters on cogging torque was ana-lyzed.Prototypes was made for testing,to compare the performance parameters of the motor before and after the slotting.The results show that reasonable position and size of the stator slot can effectively reduce the cogging torque of permanent magnet synchronous motor.
万方数据
维普
