交流牵引电机温度场分析绕组气隙优化建模方法  

Optimization modeling method for air gap analysis of an AC traction motor temperature field

作　　者：姜海鹏 郭宇轩 张小平 张铸[2] 朱广辉[3] JIANG Haipeng;GUO Yuxuan;ZHANG Xiaoping;ZHANG Zhu;ZHU Guanghui(National-Local Joint Engineering Laboratory of Marine Mineral Resources Exploration Equipment and Safety Technology,Hunan University of Science and Technology,Xiangtan 411201,China;College of Information and Electrical Engineering,Hunan University of Science and Technology,Xiangtan 411201,China;Xiangtan Electric Manufacturing Group Corporation Ltd.,Xiangtan 411101,China)

机构地区：[1]湖南科技大学海洋矿产资源探采装备与安全技术国家地方联合工程实验室,湖南湘潭411201 [2]湖南科技大学信息与电气工程学院,湖南湘潭411201 [3]湘潭电机股份有限公司,湖南湘潭411101

出　　处：《电力系统保护与控制》2021年第12期141-147,共7页Power System Protection and Control

基　　金：湖南省教育厅科学研究项目资助(19C0791);长株潭国家自主创新示范区专项资助项目(2017XK2303)。

摘　　要：针对交流牵引电机定子绕组间存在不规则气隙,而采用常规等效建模法所建模型准确性不高的问题,提出一种绕组气隙优化建模方法。确定了电机定子绕组等效模型的基本结构,提出了等效模型中绕组气隙最佳宽度确定方法,即根据所确定的等效气隙模型并采用有限元法对电机进行温度场分析以得到绕组模型表面某点对应的温度值。通过获取不同气隙宽度下模型表面某点对应的温度数据并采用数值拟合方法得到两者间的函数关系,根据所得函数关系并实测上述模型表面某点对应的实际温度,即可得到绕组等效气隙模型相应的最佳气隙宽度。该方法有效提高了交流牵引电机定子绕组建模的准确性,由此显著提升了其温度场分析结果的准确性,具有较好的应用价值。A winding air gap optimization modeling method is proposed to address the problem of irregular air gaps between the stator windings of an AC traction motor and the inaccuracy of the model built by conventional equivalent modeling methods.In this paper,the basic structure of the stator winding equivalent model is determined,and the optimal width of the winding air gap in the equivalent model is proposed,i.e.,according to the equivalent air gap model and using the finite element method to analyze the temperature field of the motor to obtain the temperature value corresponding to a certain point on the winding model surface.The best air gap width corresponding to the equivalent air gap model can be obtained according to the functional relationship obtained and the actual temperature corresponding to a point on the surface of the model.This method effectively improves the accuracy of the stator winding modeling of an AC traction motor,thus significantly improving the accuracy of its temperature field analysis,and has good application value.

关 键 词：交流牵引电机 温度场分析 绕组气隙 优化建模方法 

分 类 号：TM922.71[电气工程—电力电子与电力传动]