Numerical model for thermal calculation analysis of the wheel hub motor for electric car verified by laboratory tests

Abstract

The article concerns the thermal analysis of an electric motor for mounting in a wheel hub of an electric car. The CFD model was calibrated on the basis of the results of laboratory tests of the prototype electric motor. The analysis was aimed at recognizing the possibility of increasing the load capacity of an electric motor through the use of dielectric materials with higher thermal conductivity than those used in the actual prototype. The authors presented the problem of heat removal from motors in wheel hubs, construction of the electric motor, the calculation model and analysis of calculation results.

Traction Motor Cooling Systems: A Literature Review and Comparative Study

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Studies on Energy Consumption of Electric Light Commercial Vehicle Powered by In-Wheel Drive Modules

“…Among the designs of electric drive systems, those with electric motors located directly in the wheel are evolving rapidly. The vast majority of these designs use synchronous motors with permanent magnets, such as outrunner radial flux [33][34][35][36][37][38][39][40], axial flux [41][42][43][44][45][46][47][48], reluctance [49,50] or induction [51,52]. There are also constructions that, in order to reduce exhaust emissions generated by heat engines, use drive modules that can be added to an existing internal combustion vehicle by replacing parts of the suspension components [53,54] or the entire axle [55].…”