THERMAL SCIENCE

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Jiacheng Zhang

,

Haixu Zhang

,

Zining Liu

HEAT TRANSFER COMPARISON INVESTIGATION OF THE PERMANENT MAGNET SYNCHRONOUS MOTOR FOR ELECTRIC VEHICLES BASED ON THE BEM AND THE FEM

ABSTRACT
In the field of heat transfer in permanent magnet synchronous motors (PMSM) for electric vehicles, the boundary element method (BEM) has been applied for the first time to calculate the steady-state temperature of the PMSM with a spiral water-cooled system. In this investigation, the boundary-integration equation for the steady-state heat transfer problem of a water-cooled PMSM is first derived on the basis of thermodynamic theory, and the system of constant coefficient differential equations is obtained by discretizing its boundaries, while the temperature results obtained from the BEM are compared with the finite element method (FEM) results. Furthermore, the temperature distribution and heat transfer characteristics obtained from the FEM and BEM were verified twice using the PMSM prototype and test platform. The results show that the maximum relative error between the temperature calculation results of FEM and BEM is 1.97%, and the maximum relative error between the results of BEM and the test does not exceed 3%, which finally verifies the validity and accuracy of BEM in solving the heat transfer problems of water-cooled PMSM.
KEYWORDS
Heat transfer research, boundary element method, finite element method, Permanent magnet synchronous motor, Numerical methods comparison
PAPER SUBMITTED: 2023-05-22
PAPER REVISED: 2023-06-21
PAPER ACCEPTED: 2023-06-22
PUBLISHED ONLINE: 2023-08-05
DOI REFERENCE: https://doi.org/10.2298/TSCI230522167Z
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2024, VOLUME 28, ISSUE Issue 2, PAGES [863 - 875]
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Heat transfer comparison investigation of the permanent magnet synchronous motor for electric vehicles based on the BEM and the FEM

© 2024 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence