Abstract
Because of its ultra-high energy efficiency and low emissions, new energy vehicles have become the best technological way to achieve low carbon emissions and high efficiency in the automobile industry. But the permanent magnet synchronous in-wheel motor is directly installed in the wheel hub, so that its temperature rise is higher than other vehicle drive motors. In this paper, the permanent magnet synchronous in-wheel motor was simulated based on the thermal network method in Motor-CAD, the heating situation of the permanent magnet synchronous in-wheel motor was analysed, and the best cooling system was selected based on Taguchi method. Finally, the optimum scheme is determined as follows: the channel type is circumferential C-shape, the cooling medium is water, and the coolant flow rate is 14L/min.
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