转子有辅助槽的表贴式永磁电机解析法建模与优化  

Analytical modeling and optimization of a surface-mountedpermanent magnet machine with auxiliary slots in rotor

作　　者：倪有源[1] 崔征山 王群京[2] NI You-yuan;CUI Zheng-shan;WANG Qun-jing(School of Electrical Engineering&Automation,Hefei University of Technology,Hefei 230009,China;College of Electrical Engineering&Automation,Anhui University,Hefei 230601,China)

机构地区：[1]合肥工业大学电气与自动化工程学院,合肥230009 [2]安徽大学电气工程与自动化学院,合肥230601

出　　处：《电机与控制学报》2021年第2期65-71,共7页Electric Machines and Control

基　　金：国家自然科学基金(51637001);安徽省自然科学基金(2008085ME179);高等学校学科创新引智计划资助(BP0719039)。

摘　　要：通过在表贴式永磁电机的的转子上开辅助槽,可间接改善电机的齿槽转矩脉动状况。但目前相关文献大都基于有限元法,需要反复修改模型参数,且尚未得出明确的槽型优化方法。本文选取磁场中的标量磁位为求解变量,在电机的气隙区域、永磁体区域分别建立拉普拉斯和准泊松方程。对于不规则的永磁体形状,采用分块累加方法,提出了一种转子含有半圆形辅助槽的表贴式永磁电机解析模型。之后,推导了齿槽转矩峰值与槽型尺寸的解析关系,对辅助槽型尺寸进行优化分析,可获得齿槽转矩脉动的极小值。最后,利用有限元法对所提出的解析模型进行了验证。The cogging torque ripple of surface mounted permanent magnet motor can be reduced by opening auxiliary slots on the rotor.However,the analyses are mainly based on the finite element method,which requires repeated modification of the parameters of the model,and there is no clear method to optimize the geometry.In this paper,taking the scalar magnetic potential as variable,the Laplace and Quasi Poisson equations were established in the air gap and permanent magnet region respectively.For the irregular shape of magnet,an analytical model of surface-mounted permanent magnet motor with auxiliary slots in the rotor was proposed based on the principle of superposition.Then,the relationship between the peak cogging torque and the auxiliary slot size was derived.The auxiliary slot size was optimized and the cogging torque was minimized.Finally,the finite element method was used to validate the presented analytical model.

关 键 词：辅助槽 解析法 表贴式永磁电机 齿槽转矩 优化 

分 类 号：TM351[电气工程—电机]