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作 者:汪倚彤 夏睿 宋剑桥 王洪武[1] WANG Yitong;XIA Rui;SONG Jianqiao;WANG Hongwu(No 21.Research Institute of CETC,Shanghai 200233,China)
机构地区:[1]中国电子科技集团公司第二十一研究所,上海200233
出 处:《微特电机》2023年第3期36-40,共5页Small & Special Electrical Machines
摘 要:齿槽转矩由永磁电机中的永磁体和有槽电枢铁心相互作用产生。基于能量法和有限元仿真分析了永磁体极弧系数对电机齿槽转矩的影响,计算选取出最优极弧系数,通过调整磁极偏心距离进一步降低齿槽转矩,将仿真结果与样机测试数据进行对比证实了优化方案的可行性。结果表明,合理选取极弧系数并结合磁极偏心的方法可以有效降低齿槽转矩。Cogging torque is produced by the interaction between permanent magnet and slotted armature core in permanent magnet motor.Based on the energy method and finite element simulation,the influence of pole arc coefficient of permanent magnet pole on the cogging torque of the motor was analyzed and the optimal pole-arc coefficient was calculated and selected.The cogging torque was further reduced by adjusting the pole-arc center offset of the magnetic pole.The simulation results were compared with the prototype test data to verify the feasibility of the optimization scheme.The results show that the cogging torque can be effectively reduced by reasonably selecting the pole-arc coefficient and combining the center offset of magnetic pole.
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