3D thermal analysis of a permanent magnet motor with cooling fans
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11582_2015_Article_29.pdf
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Author(s)
Tan, Zheng
Song, Xue-guan
Ji, Bing
Liu, Zheng
Ma, Ji-en
Cao, Wenping
Date Issued
August 2015
Journal
Journal of Zhejiang University SCIENCE A
Publisher
Zhejiang University Press
Citation
Tan, Zheng et al. “3D Thermal Analysis of a Permanent Magnet Motor with Cooling Fans.” Journal of Zhejiang University SCIENCE A 16.8 (2015): 616–621.
Version
Author's final manuscript
Abstract
Overheating of permanent magnet (PM) machines has become a major technical challenge as it gives rise to magnet demagnetization, degradation of insulation materials, and loss of motor efficiency. This paper proposes a state-of-the-art cooling system for an axial flux permanent magnet (AFPM) machine with the focus on its structural optimization. A computational fluid dynamics (CFD) simulation with thermal consideration has been shown to be an efficient approach in the literature and is thus employed in this work. Meanwhile, a simplified numerical approach to the AFPM machine with complex configuration in 3D consisting of conduction, forced convection, and conjugate heat transfer is taken as a case study. Different simplification methods (including configuration and working conditions) and two optimized fans for forced convection cooling are designed and installed on the AFPM machine and compared to a natural convection cooling system. The results show that the proposed approach is effective for analyzing the thermal performance of a complex AFPM machine and strikes a balance between reasonable simplification, accuracy, and computational resource.
MIT Department
Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science
Terms of Use
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1631/jzus.A1400293
