基于多场耦合的电机暂态温度场研究

doi:10.16180/j.cnki.issn1007-7820.2020.05.003

电子科技 ›› 2020, Vol. 33 ›› Issue (5): 15-20.doi: 10.16180/j.cnki.issn1007-7820.2020.05.003

基于多场耦合的电机暂态温度场研究

宋贺^1,²,吴尧辉^1,²,吴昊珍³

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

收稿日期:2019-03-12 出版日期:2020-05-15 发布日期:2020-06-02
作者简介:宋贺(1993-),男,硕士研究生。研究方向:电机与电器。|吴尧辉(1964-),男,高级工程师。研究方向:电机与电器,电力系统继电保护等。
基金资助:
国家自然科学基金(61340015);教育部协同育人项目(201701056027);教育部协同育人项目(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);河南省教育厅自然科学研究计划项目(2009B470003)

Research on Transient Temperature Field of Motor Based on Multifield Coupling

SONG He^1,²,WU Yaohui^1,²,WU Haozhen³

1. School of Electrical Engineering and Automation,Henan Polytechnic University, Jiaozuo 454000,China
2. Direct Drive Elevator-Engineering Technology Research Center of Henan Province, Jiaozuo 454000,China
3. Zhengzhou Technology and Business University,Zhengzhou 451400,China

Received:2019-03-12 Online:2020-05-15 Published:2020-06-02
Supported by:
National Natural Science Foundation of China(61340015);Ministry of Education Collaborative Education Project(201701056027);Ministry of Education Collaborative Education Project(201702064052);Ministry of Education Innovation and Entrepreneurship Fund(201802060039);Natural Science Research Program of Education Department of Henan Province(2010A470003);Natural Science Research Program of Education Department of Henan Province(2009B470003)

摘要/Abstract

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。

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

Abstract:

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.

Key words: complex working condition, two-dimensional model, unstable load, transient temperature field, parameters equivalence, multi-field coupling

中图分类号:

TP391.9

宋贺,吴尧辉,吴昊珍. 基于多场耦合的电机暂态温度场研究[J]. 电子科技, 2020, 33(5): 15-20.

SONG He,WU Yaohui,WU Haozhen. Research on Transient Temperature Field of Motor Based on Multifield Coupling[J]. Electronic Science and Technology, 2020, 33(5): 15-20.

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参数名称	参考值	参数名称	参数值
额定功率/W	100	气隙长度/mm	0.18
额定电压/V	220	定子槽数	24
额定电流/A	0.5	转子槽数	30
额定转速/r·min^-1	1 420	定子外径/mm	120
铁心长度/mm	50	定子内径/mm	71.16

负载/Nom	时间/min	求解模型	时间	步长
额定负载	5	电磁场	420 ms	1 ms
1.3倍负载	5	温度场	176 min	1 min
1.5倍负载	1	耦合模型	176 min	5 min

参数	数值
时间/min	44	88	132	176
转子/℃	56.2	66.7	72.3	75.9
槽内下/℃	52.3	62.2	67.7	71.1
槽内中/℃	53.5	63.5	69.0	72.5
槽中顶/℃	53.0	62.9	68.4	71.9
端齿顶℃	51.6	61.6	66.9	70.4
轭外中/℃	50.2	59.9	65.1	68.5
外壳/℃	48.7	57.9	62.9	66.2

参数	数值
时间/min	44.0	88.0	132.0	176.0
转子/℃	55.8	65.7	72.3	75.3
槽内下/℃	51.4	62.1	67.8	71.0
槽内中/℃	52.5	63.4	69.4	72.3
槽中顶/℃	52.0	62.8	68.4	71.8
端齿顶℃	50.7	61.3	66.9	70.3
轭外中/℃	49.0	59.5	65.0	68.3
外壳/℃	46.9	56.8	62.1	64.9

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

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