多场耦合的电机暂态温度场计算  

Calculation of motor transient temperature field of multi-field coupling

作　　者：吴尧辉[1,2] 张建强 吴昊珍[3] 

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

出　　处：《电子测量技术》2017年第12期11-17,共7页Electronic Measurement Technology

基　　金：国家自然科学基金(61340015);河南省教育厅自然科学基金(2009B470003);河南省教育厅自然科学基金(2010A470003)项目资助

摘　　要：针对稳定负载下电机暂态温度场的计算问题,以小型封闭式结构的异步机为对象,建立电机热源计算的有限元电磁场模型,并依据散热结构特点建立相应的温度场模型,通过多场耦合的途径实现电磁场与温度场的联合,并附于电磁场、温度场相关的模型参数及联合计算参数,经电磁场适时地耦合温度场的联合计算,实现稳定负载下的温度场各暂态计算。通过搭建实验系统及测试,对电机额定负载下全域温度场实验结果和仿真对比得出,电机稳定负载下,多场耦合的联合计算能较好地计算电机全域暂态过程温度场。To solve the problem of calculating the transient temperature field of motor under steady load,taking the small enclosed structure of the asynchronous motor as the research object,the calculation of heat source in the motor electromagnetic field model is established by finite element methods,the corresponding temperature field model is established according to the characteristics of enclosed structure,the combined calculation of electromagnetic field and temperature field is realized by means of multi-field coupling,attached to the model parameters related to the electromagnetic field and temperature field and the coupling parameters of the joint calculation,through doing combined calculation of electromagnetic field coupling temperature field properly,realizing the calculation of each transient temperature field under steady load.Through the actual system test,comparing between the global temperature field experiment of the motor under steady load and simulation results,multi-field coupling calculation method can realize the calculation of the motor whole transient temperature field under steady load reliably.

关 键 词：稳定负载 多场耦合 电机暂态温度场 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]