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

doi:10.11985/2019.01.007

Abstract

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

CLC Number:

TM275

DU Yufeng,ZHANG Yanli,REN Ziyan. Iterative Coupling Simulation of Magnetic and Thermal Field Considering Temperature Effect of Magnetic Properties in the Electrical Steel Sheet[J]. Journal of Electrical Engineering, 2019, 14(1): 35-40.

Figures/Tables 8

References 10

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名称	参数
额定功率/kW	0.78
额定电压/V	200
额定转速/(r/min)	1 500
气隙/mm	1.5
轴向长度/mm	54
定子极外半径/mm	61
转子极外半径/mm	37
极对数	2
槽数	24

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