考虑电工钢片磁特性温度效应的磁热迭代耦合仿真

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英文篇名：Iterative Coupling Simulation of Magnetic and Thermal Field Considering Temperature Effect of Magnetic Properties in the Electrical Steel Sheet 作者：杜玉峰 ; 张艳丽 ; 任自艳 英文作者：DU Yufeng;ZHANG Yanli;REN Ziyan;Ministry of Education Key Laboratory of Special Motor and High-Voltage Apparatus,Shenyang University of Technology; 关键词：磁特性 ; 温度效应 ; 铁心 ; 磁热耦合 ; 电工钢片 英文关键词：Magnetic property;;temperature effect;;core;;magnetic-thermal coupling;;electrical steel sheet 中文刊名：DQZH 英文刊名：Journal of Electrical Engineering 机构：教育部特种电机与高压电器重点实验室(沈阳工业大学); 出版日期：2019-03-25 出版单位：电气工程学报 年：2019 期：v.14 基金：国家自然科学基金项目(51777128)资助 语种：中文; 页：DQZH201901007 页数：6 CN：01 ISSN：10-1289/TM 分类号：45-50

摘要

电工钢片的磁特性会受到磁化方式、工作温度及外界压力等因素的影响。为了研究电工钢片磁特性的温度效应,基于单片电工钢片磁特性测量仪和一台恒温箱,实验测量了50AW600型晶粒无取向电工钢片和30ZH120型取向电工钢片在不同温度、励磁频率时的磁导率及损耗数据,分析了温度对材料特性的影响。研究了一种考虑电工钢片磁特性温度效应的磁热迭代耦合方法,并借助磁场仿真软件MagNet和温度场仿真软件ThermNet实现了磁热迭代耦合仿真。在此基础上,仿真计算了一台永磁无刷直流电机的铁心温度分布,对比分析了考虑材料温度特性前后电机铁心温升的变化,为准确计算电机、变压器等电工产品温升分布提供了一种有效的仿真方法。
        The magnetic properties of electrical steel sheet are affected by magnetization patterns, working temperature and external pressure. In order to study the temperature effect of magnetic properties in the electrical steel sheet, in this paper, based on the magnetic property experimental test setup of a single electrical steel sheet and a thermostat, the permeability and loss data of50 AW600 non-oriented and 30 ZH120 grain-oriented electrical steel sheet under different temperatures and excitation frequencies are experimentally measured. The influence of temperature on the properties of the material is analyzed. A magnetic-thermal iterative coupling method considering the temperature effects of magnetic properties in the electrical steel sheet is investigated. The magnetic-thermal iterative coupling simulation is realized by means of the magnetic field simulation software MagNet and the temperature field simulation software ThermNet. On this basis, the core temperature distribution of a permanent magnet brushless DC motor is simulated and the temperature rise of motor core is analyzed before and after taking into account the temperature properties of materials, which provides an effective simulation method for accurate calculation of temperature distribution of electrical products such as motors and transformers.

引文

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