The advances on the study of heating and cooling issues for in-wheel-motor-driven systems Online publication date: Sun, 23-Jul-2017
by Di Tan; Fan Song
International Journal of Electric and Hybrid Vehicles (IJEHV), Vol. 9, No. 2, 2017
Abstract: For in-wheel-motor-driven electric vehicles, the braking system, transmission system and driving motor are highly integrated in wheels, which has obvious technical advantages in vehicle arrangement, the active control of chassis and the operation convenience. However, the narrow-closed installation space will not only lead to poor air circulation, but also make the heat radiation difficult. If the large amount of heat generated during the operation cannot be dissipated in time, it will not only damage the winding insulation and reduce the life, but also cause irreversible demagnetisation of permanent magnet and threaten the safety and stability of the in-wheel motor. Consequently, it is important to calculate the heat source and temperature field distribution of in-wheel-motor-driven system and design an efficient cooling system. In this paper, the heating and cooling issues of the in-wheel-motor-driven system are summarised, and the development trend is discussed based on the domestic and overseas research status.
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