Research On Electric Vehicle Induction Motor Optimization

Electric vehicles are at the forefront of the development of the automobile industry,which is of great significance to industry,energy,environmental protection and other fields.Many factors will affect the performance of electric vehicles,among which the driving motor plays an important role.By improving the design of induction motor to improve the performance of electric vehicles,the research may improve production efficiency and promote further popularization of electric vehicles.Firstly,this thesis introduces the research background of induction motor for electric vehicles,and the driving motor of the mainstream electric vehicles in the market is compared and analyzed.The thesis also analyzes the advantages and disadvantages between new magnetic material and the traditional silicon steel material.Secondly,this thesis carries out electromagnetic design for a 40 k W automotive induction motor,uses Ansys finite element software to model and simulate the induction motor of electric vehicle,and analyzes the characteristics of the new ferromagnetic material EV motor.The influence of the structure parameters of stator slots on the motor loss is studied,and the design parameters of stator slots are optimized.Finally,with the electromagnetic finite element analysis results,the thesis uses Ansys Workbench software to complete a three-dimensional steady temperature field simulation,and the temperature distribution of stator iron core,stator winding and rotor conductors is obtained.This thesis also analyzes the reasons of heat distribution,and makes reasonable choice to cooling mode,aiming at laying a foundation to design more efficient EV induction motors.