Thermal Modeling and Analysis of Axial Flux Permanent Magnet Machine with PCB Stator

Xiao-yuan Wang, Chunxia Yin, T. Li
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Abstract

It is necessary to consider temperature rise when an axial flux permanent magnet machine (AFPMM) is designed since the excessive rise in temperature damages the machine’s performance. An AFPMM with a coreless printed circuit board (PCB) stator is designed and studied in this paper. The studies mainly focus on the thermal modeling and analysis of windings for the incomplete heat dissipation conditions of the PCB stator inside the machine. Firstly, the three-dimensional (3D) electromagnetic field model of the AFPMM is established by the finite element method (FEM). Then the bidirectional coupled simulation between the electromagnetic field model and the thermal model is realized. Finally, the temperature rise of the PCB stator is reduced by increasing the linewidth of the effective conductors to optimize the design of the AFPMM. Measured performances of the manufactured prototype verify the validity of the proposed bidirectional coupled thermal model.
带有PCB定子的轴向磁通永磁电机的热建模与分析
在设计轴向磁通永磁电机(AFPMM)时,必须考虑温升问题,因为温升过高会损害电机的性能。本文设计并研究了一种无芯PCB定子的AFPMM。针对PCB定子在机内散热不完全的情况,主要对绕组进行热建模和分析。首先,采用有限元法建立了AFPMM的三维电磁场模型;然后实现了电磁场模型和热模型的双向耦合仿真。最后,通过增加有效导体的线宽来降低PCB定子的温升,从而优化AFPMM的设计。制造样机的实测性能验证了所提出的双向耦合热模型的有效性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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