Performance Analysis and Calculation of Flat Wire Induction Motors for Electric Vehicles
With the high-end development of the electric vehicle(EV)industry,induction motors(IMs),due to their superior performance characteristics and mature manufacturing processes,have become the pre-ferred choice for auxiliary drive motors in EVs.To meet the performance requirements of high efficiency,high power density,and excellent NVH(Noise,Vibration,and Harshness),flat wire winding is gradually being applied in EV motors.In order to delve into the impact of AC losses on the stator copper losses and ef-ficiency of flat wire motors,and to reveal the advantages of flat wire motors over traditional round wire mo-tors,this paper took a self-designed IM with a peak power of 140 kW as the research object.Firstly,from the perspectives of mathematical modeling and simulation calculations,the variation pattern of AC losses was analyzed.Based on the changes in motor performance before and after considering AC losses,it was ex-plained that AC losses of flat wire winding were one of the key factors affecting motor efficiency.In the simu-lation process,to shorten simulation time,the application principle of a parallel transient solution algorithm in IMs was introduced.Finally,the electromagnetic performance of flat wire motors and round wire motors with the same stator slot area and rotor structure was simulated,analyzed,and compared.The results show that compared to round wire motors,flat wire motors exhibit higher efficiency,power density,and better thermal performance during operation.
万方数据
维普
