电气工程学报 ›› 2019, Vol. 14 ›› Issue (1): 35-40.doi: 10.11985/2019.01.007

• • 上一篇    下一篇

扫码分享

考虑电工钢片磁特性温度效应的磁热迭代耦合仿真 *

杜玉峰,张艳丽,任自艳   

  1. 教育部特种电机与高压电器重点实验室(沈阳工业大学) 沈阳 110870
  • 收稿日期:2018-07-27 出版日期:2019-03-25 发布日期:2019-11-01
  • 作者简介:杜玉峰,男,1989年生,硕士研究生,主要研究方向为电工设备电磁热耦合技术|张艳丽,女,1975年生,教授,博士生导师,主要研究方向为工程电磁与新型材料应用技术。E-mail:zylhhjhyc_sy@163.com
  • 基金资助:
    *国家自然科学基金项目资助(51777128)

Iterative Coupling Simulation of Magnetic and Thermal Field Considering Temperature Effect of Magnetic Properties in the Electrical Steel Sheet

DU Yufeng,ZHANG Yanli,REN Ziyan   

  1. Ministry of Education Key Laboratory of Special Motor and High-Voltage Apparatus, Shenyang University of Technology, Shenyang 110870 China
  • Received:2018-07-27 Online:2019-03-25 Published:2019-11-01

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。

关键词: 磁特性, 温度效应, 铁心, 磁热耦合, 电工钢片

Abstract:

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 of 50AW600 non-oriented and 30ZH120 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.

Key words: Magnetic property, temperature effect, core, magnetic-thermal coupling, electrical steel sheet

中图分类号: