摘要
对称V型异步启动永磁同步电机具有较好的启动性能和低耗电量,但齿槽效应明显。为降低齿槽转矩,首先,基于能量法推导出电机齿槽转矩解析式,确定以永磁体宽度、极弧系数、定子槽口宽度、转子轴向长度和转子齿宽为优化参数组合;然后,提出一种参数分层与响应面法相结合的齿槽转矩优化方法,通过最大-最小蚁群系统算法对响应面模型求取最优解;最后,利用有限元法对模型进行仿真实验,对优化结果进行了分析对比。结果表明,采用最优参数解的电机,齿槽转矩降低了73.9%,转矩脉动降低了10.1%,气隙磁密基波幅值提高了0.03 T,电机效率提高了1.5%。
Although a symmetrical V-type line-start permanent magnet synchronous motor(LSPMSM)has a better starting performance and low power consumption,the corresponding cogging effect is obvious.To reduce the cogging torque,the analytical formula for cogging torque was derived based on the energy method at first,and the optimal combination of permanent magnet width,pole arc coefficient,stator slot width,rotor axial length,and rotor tooth width was determined.Then,a novel optimization method for cogging torque based on the combination of parameter stratification and response surface method was proposed,and the optimal solution to the response surface model was found by using the max-min ant system algorithm.Finally,simulation experiments were conducted using the finite element method,and the optimization results were analyzed and compared.Results show that by using the motor with optimal parameters,the cogging torque was reduced by 73.9%,the torque ripple was reduced by 10.1%,the amplitude of air-gap magnetic-density fundamental wave was improved by 0.03 T,and the motor efficiency was improved by 1.5%.
作者
李晓峰
高锋阳
齐晓东
李昭君
李浩武
LI Xiaofeng;GAO Fengyang;QI Xiaodong;LI Zhaojun;LI Haowu(School of Automation and Electrical Engineering,Lanzhou Jiaotong University,Lanzhou 730070,China;Gansu Jiaoda Engineering Inspection Co.,Ltd,Lanzhou 730070,China)
出处
《电力系统及其自动化学报》
CSCD
北大核心
2021年第5期1-8,共8页
Proceedings of the CSU-EPSA
基金
国家重点研发计划资助项目(2018YFB1201602-06)。
关键词
异步启动永磁同步电机
能量法
参数分层
响应面法
有限元
齿槽转矩
line-start permanent magnet synchronous motor(LSPMSM)
energy method
parameter stratification
response surface method
finite element
cogging torque
