EV용 내부 매입형 동기식 전동기에 대한 회전체 구조설계에 대한 연구

This paper provides background and summary information for recent machine parametric studies and the analysis of rotating shaft design on IPM (Interior Permanent Magnet) in EV (Electric Vehicle). Also, This research deals with the natural frequency and mode shape of rotating shaft of Interior Permanent Magnet Motor with bearing stiffness by FEA (Finite Element Analysis) S/W. We present the natural frequency characteristic variation of rotating shaft according to change bearing stiffness and operation speed condition. Presented design method will apply to the IPM motor design to be simple, compact and effective design for IPM motor in EV.