连续不等齿距削弱横向磁通永磁电机齿槽转矩方法  

Cogging Torque Reduction of Transverse Flux Permanent Magnet Motor By Continuous Unequal Tooth Spacing

作　　者：朱冬梅[1] 王政钢 ZHU Dongmei;WANG Zhenggang(School of Electrical Engineering,Shenyang University of Technology,Shenyang 110870,China)

机构地区：[1]沈阳工业大学电气工程学院,沈阳110870

出　　处：《微特电机》2024年第10期21-25,共5页Small & Special Electrical Machines

摘　　要：横向磁通永磁电机的齿槽转矩大,引起的转矩脉动显著,对电机的控制精度产生不利影响。提出一种连续不等齿距法来削弱横向磁通永磁电机的齿槽转矩。该方法将定子齿沿圆周方向分组,每组定子齿数相等,同组内相邻的齿距呈等差数列,导致同组内每个齿的齿槽转矩产生相位偏移,进而削弱齿槽转矩。结合能量法,推导了横向磁通永磁电机齿槽转矩数学表达式,揭示连续不等齿距法削弱齿槽转矩的原理,通过有限元方法验证,连续不等齿距法可以显著削弱横向磁通永磁电机的齿槽转矩。The transverse flux permanent magnet motor exhibits significant cogging torque,leading to a noticeable torque ripple that adversely affects the motor's control accuracy.A continuous unequal tooth spacing method was proposed to mitigate the cogging torque of transverse flux permanent magnet motors.In this method,stator teeth were grouped along the circumference with an equal number of teeth in each group,and the adjacent tooth spacing within the same group formed an arithmetic sequence.This resulted in a phase shift of the cogging torque within each group,effectively reducing the overall cogging torque.By utilizing the energy method,a mathematical expression for the cogging torque of the transverse flux permanent magnet motor was derived which revealed how the continuous unequal tooth spacing method reduced cogging torque.The finite element method verified that the continuous unequal tooth spacing method can significantly reduce the cogging torque of transverse flux permanent magnet motors.

关 键 词：横向磁通永磁电机 齿槽转矩 能量法 连续不等齿距法 

分 类 号：TM351[电气工程—电机]