3D thermal analysis of a permanent magnet motor with cooling fans
Author(s)
Tan, Zheng; Song, Xue-guan; Ji, Bing; Liu, Zheng; Ma, Ji-en; Cao, Wenping; ... Show more Show less
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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.
Date issued
2015-08Department
Massachusetts Institute of Technology. Department of Electrical Engineering and Computer ScienceJournal
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
ISSN
1673-565X
1862-1775