Abstract
In order to improve the working performance and service life of electric vehicles, the temperature field of the in-wheel motor is optimized based on the finite element analysis model. The winding copper loss, stator core loss, permanent magnet eddy current loss and stray loss are used as heat sources for the temperature field analysis of the in-wheel motor. Each component of the in-wheel motor is analyzed for transient temperature changes using a magneto-thermal coupling method. The temperature variation of the components of the in-wheel motor with time and the spatial distribution characteristics are studied in detail. Finally, the joint simulation model including the in-wheel motor body and the external drive control circuit is established, which fully considers the transient changes of the motor loss distribution during the working process.
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