基于磁极偏移的新型永磁同步电机性能研究∗

摘要

48-slot 16-pole surface mounted permanent magnet synchronous generator model was established by Ansoft Maxwell. The cogging torque of permanent magnet generator was analysed in theoretically, and poles are shifted for different angles with the related theory, the original model and the new one that shifted were compared from the running performance of no load and on load. Simulation results show that is helpful to reduce the motor noise, vibration and control precision, to optimize the power quality.%应用Ansoft软件建立了48槽16极的表贴式永磁同步发电机模型，并以减小齿槽转矩为目的，分析了永磁发电机齿槽转矩的来源，依据磁极偏移原理对电机模型部分磁极做了不同角度的偏移，对磁极均分和磁极偏移后的新型电机模型从空载和负载情况下的运行性能做了对比研究。仿真表明，有利于减小电机的噪声、振动及控制精度，优化了电能质量。