定子齿表面开槽对永磁无刷直流电机齿槽转矩的影响  

Influence of Slotting on the Teeth on the Cogging Torque of Permanent Magnetic Brushless DC Motor

作　　者：张颖[1,2] 林明耀[3] 

机构地区：[1]江苏食品职业技术学院 [2]东南大学,南京210096 [3]东南大学

出　　处：《电气技术》2008年第1期16-19,36,共5页Electrical Engineering

摘　　要：齿槽转矩是由永磁体磁场与磁槽之间相互作用而产生的,它会引起转矩脉动,甚至可能发生与电机共振的现象。影响齿槽转矩的因素很多,如磁极、槽的数量,齿槽形状以及磁钢的极弧系数等,因此,准确计算齿槽转矩较为复杂。本文利用麦克斯韦张量法计算和分析定子表面开槽对齿槽转矩的影响,为永磁无刷直流电机设计提供理论参考。Cogging torque is produced by the interaction of permanent magnet and the tooth-slot.It'll make the torque pulsating,and even produce resonance with electric motor.It's more complicated to calculate the cogging torque precisely,because it's related to many effects,such as the number of poles and tooth,poles-arc coefficient,kinds of slot and so on.In this paper,the effects of slotting on the stator teeth on the cogging torque of permanent magnet brushless DC motor is investigated by using the Maxwell stress method,and this is useful for the machine design.

关 键 词：齿槽转矩 麦克斯韦张量 永磁无刷直流电机 

分 类 号：TM351[电气工程—电机]