The Efficiency Analysis of Various Structural Solutions of the Wheel Motor Cooling Systems

The analysis of the performance of various structural solutions of the cooling system for the in wheel car motor is presented in the work. The analysis was conducted on the prepared spatial calculation models using the CFD software. The maximum motor temperature for various solutions of the stator support structure and for different shapes of the water jacket channel was determined as a result of simulation. The analysis for a steady state with constant losses corresponding to the S1 motor operation point and the constant flow of the cooling medium was carried out. The calculations were made by building separate discrete models for each analyzed case. The information how the structural changes affect the efficiency of the cooling system and how to improve the prototype of the in wheel car motor was given as a result of conducted thermal simulations.