永磁无刷直流电机定子齿部辅助槽对转矩特性的影响分析  

Research on the Influence of Auxiliary Slots on the Torque Characteristics of Permanent Magnet Brushless DC Motor

作　　者：段锦锋 郭建宁 王永嘉 杨小青 DUAN Jinfeng;GUO Jianning;WANG Yongjia;YANG Xiaoqing(Shaanxi Aerospace Times Navigation Equipment Co.,Ltd.,Baoji 721000,China)

机构地区：[1]陕西航天时代导航设备有限公司,宝鸡721000

出　　处：《微特电机》2024年第10期16-20,25,共6页Small & Special Electrical Machines

摘　　要：推导了齿槽转矩表达式并分析了电机槽极配合对齿槽转矩和转矩波动的影响。基于一款6槽8极的永磁无刷直流电机,研究定子齿顶开槽对齿槽转矩的抑制作用。有限元仿真分析表明,电机齿槽转矩和转矩特性与辅助槽数量和槽口尺寸有较大关系,当定子齿顶开2个辅助槽、槽深0.6 mm槽宽2.0 mm时,齿槽转矩下降了69.1%。样机实测数据验证了有限元分析的结果。The expression of cogging torque was derived and the influence of motor slot-pole combination on cogging torque and torque fluctuation was analyzed.Based on a 6-slot 8-pole permanent magnet brushless DC motor,the suppression effect of stator tooth top slot on cogging torque was studied.Finite element simulation analysis showed that the cogging torque and torque characteristics of the motor were closely related to the number of auxiliary slots and slot size.When two auxiliary slots were opened at the top of the stator teeth,with a slot depth of 0.6 mm and a slot width of 2.0 mm,the cogging torque decreased by 69.1%.The prototype test data validated the results of finite element analysis.

关 键 词：永磁无刷直流电机 定子齿顶矩形辅助槽 齿槽转矩 转矩特性 样机测试 

分 类 号：TM351[电气工程—电机]