Review on technology development of centralized driving motors used for electric vehicles
In recent years,problems such as environmental protection,energy crises and greenhouse effect have urged the rapid development of electric vehicles(EVs).As a key component of EVs,the motor directly affects the performance of electric driving system of EVs.With the continuous development of electric driving system towards to the direction of permanent magnetization,high speed and integration,the driving motor faces many challenges in such aspects as structure design,cooling and heat dissipation.The types,typical topological structures and application cases of current driving motors are summarized,and the coresponding advantages and disadvantages of different driving motors are analyzed.In addition,this paper reviews the research status of driving motors from the aspects of thermal analysis and cooling structure design,the technical problems of driving motors that need to be solved are summerized,and the future development direction is pointed out.This paper can provide certain references for the theoretical research and engineering applications of driving motors used for EVs.
electric vehiclecentralized drivingdriving motortopology structurepermanent magnetizationcooling structureenergy crisisgreenhouse effect