Investigation of Axial Flux In-Wheel Motor Performances Based on Multiphysics Analysis

Laboratory of Low Emission Vehicle, Beijing Institute of Technology

^* Corresponding author:youtong@bit.edu.cn; Tel.: +86-10-6891-5013
^a Corresponding author:3120195267@bit.edu.cn

Abstract

The axial flux with amorphous alloy stators has the virtues of high power density, high torque density, compact structure. But specific to the disadvantage of restricted space of in-wheel, the compact axial flux in-wheel motor was proposed in this paper. The in-wheel motor’s performance affects the dynamic and security of electric vehicles directly. And the electromagnetic loss has a significant impact on in-wheel motor performance. To demonstrate the influence of electromagnetic loss on the thermal behavior of the machine, thermal analyses employing magneto-thermal coupling simulations have been performed. Then the experimental prototype was manufactured and tested. The simulation of the output power model was verified by test value, proving that the magneto-thermal coupling simulation is feasible. Therefore, this design technique provides a reference for the in-wheel motor structure.