A study of the inductance measurement of an interior permanent magnet synchronous motor

매입형 영구자석 동기전동기의 인덕턴스 계측에 관한 연구

  • 이정흠 (인하대학교 전기공학과) ;
  • 김영석 (인하대학교 전기공학과) ;
  • 정우택 (인하대학교 전기공학과) ;
  • 김대현 (인하대학교 전기공학과) ;
  • 최양광 (인하대학교 전기공학과)
  • Published : 2004.10.15

Abstract

An interior permanent magnet synchronous motor (IPMSM) is receiving increased attention for many industrial applications because of its high torque to inertia ratio, superior power density, and high efficiency. IPMSM is necessary to use the accurate information of the inductace for the precise torque control owing to the reluctance torque. This paper presents two method to measure the each-axis inductance. The first method uses the peak current that is measured by applying the pulsewise voltage on the each position of IPMSM. The second uses the hysteresis loop of the flux and current measured by applying the positive and negative pulsewise voltage alternately on the each-axis.

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