Multi-Physics Filed Coupling Analysis of Fractional Slot Permanent Magnet Machine

doi:10.11985/2017.05.001

Abstract

Abstract:

Due to the running status and characteristics of the electric machines are directly related to its electrical, magnetic, thermal and other physical fields, multiple physical field coupling analysis is of great importance. In this paper, 3D finite element method is used to research on magnetic field distribution when the fractional slot permanent magnet machine running, and get loss values by magnetic field analysis. Taking each part of the loss as a heat source of the electric machine in the simulation analysis of temperature field of permanent magnet machine and got the temperature distribution of the machine. Then a prototype machine is used to experiment based on this. The validity of the multiple physical field coupling analysis method is confirmed through the comparison of the experimental results with the simulation results, laid a theoretical basis for the subsequent electric machine structure optimization.

Key words: Permanent magnet machine, fractional slot, loss, multi-physics field, finite element method

CLC Number:

TM351

Kai Yang,Jianhu Yan,Shangkun Zhang. Multi-Physics Filed Coupling Analysis of Fractional Slot Permanent Magnet Machine[J]. Journal of Electrical Engineering, 2017, 12(5): 1-7.

Figures/Tables 14

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部件名称	导热系数/(W/m·K)
定子铁心	39
空气	0.0305
定子绕组	385
永磁体	9
转子极靴	4.43
转子轭部	45

区域	温升/℃
最高温升	62.47
定子绕组最高温升	62.47
定子齿部平均温升	62.34
定子轭部平均温升	61.85
永磁体最高温升	41.66
永磁体平均温升	41.25
转子轭部平均温升	40.60