基于多场耦合的电机暂态温度场研究  

Research on Transient Temperature Field of Motor Based on Multifield Coupling

作　　者：宋贺 吴尧辉[1,2] 吴昊珍 SONG He;WU Yaohui;WU Haozhen(School of Electrical Engineering and Automation,Henan Polytechnic University,Jiaozuo 454000,China;Direct Drive Elevator-Engineering Technology Research Center of Henan Province,Jiaozuo 454000,China;Zhengzhou Technology and Business University,Zhengzhou 451400,China)

机构地区：[1]河南理工大学电气工程与自动化学院,河南焦作454000 [2]直驱电梯-河南省工程技术研究中心,河南焦作454000 [3]郑州工商学院,河南郑州451400

出　　处：《电子科技》2020年第5期15-20,共6页Electronic Science and Technology

基　　金：国家自然科学基金(61340015);教育部协同育人项目(201701056027,201702064052);教育部创新创业联合基金(201802060039);河南省教育厅自然科学研究计划项目(2010A470003,2009B470003)。

摘　　要：针对复杂工况下电机不稳定发热引起的温度场暂态计算问题,根据不稳定发热的规律建立电磁场与温度场的二维耦合模型。文中依据小型式异步电机的结构特点,进行电磁场-热场二维模型的结构参数、边界条件参数、材料的电、热物理参数的计算、等效及配置;依据复杂工况下发热变化的规律,进行耦合频率、热源耦合方式的设计及相关参数计算配置,实现不稳定负载下电机的暂态温度场计算并考察电机各部分的实际最高温度分布状况。基于实验平台的方案设计和搭建,进行温升实验。通过对比分析电机暂态温度场的仿真和实验数据,验证了二维模型参数等效的合理性和多场耦合法能够准确地计算复杂工况下电机全暂态温度场。To solve the transient calculation of temperature field problem caused by unstable heating of the motor under complex working conditions,a two-dimensional coupling model of electromagnetic field and temperature field was established according to the law of unstable heat.Based on the structural characteristics of small type asynchronous motor,the structural parameters,boundary condition parameters,electrical and thermal physical parameters calculation,equivalent and configuration of the electromagnetic field-thermal field two-dimensional model were performed.According to the law of heating variation under complex working conditions,the coupling frequency and heat source coupling mode were designed,and the relevant parameters were calculated and configured.The transient temperature field calculation of the motor under unstable load was realized,and the actual maximum temperature distribution of each part of the motor was investigated.The temperature rise experiment was carried out through the scheme design and construction of the experimental platform.The simulation and experimental results of the transient temperature field of the motor showed that the rationality of parameters equivalence of the two-dimensional model and multi-field coupling method could accurately calculate the full transient temperature field of the motor under complex conditions.

关 键 词：复杂工况 二维模型 不稳定负载 暂态温度场 参数等效 多场耦合 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]