The Transactions of The Korean Institute of Electrical Engineers (전기학회논문지)

The Korean Institute of Electrical Engineers (대한전기학회)
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Characteristics Analysis on the Effects of Rotor Eccentricity in Squirrel-cage Induction Motor

회전자 편심을 고려한 농형 유도전동기의 특성해석

  • 김미정 (동아대 공대 전기공학과) ;
  • 김병국 (동아대 공대 전기공학과) ;
  • 황돈하 (한국전기연구원 산업전기연구단) ;
  • 강동식 (한국전기연구원 전력설비진단연구그룹) ;
  • 조윤현 (동아대학교 전기공학과)
  • Published : 2007.02.01
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Abstract

This paper describes the effects of rotor eccentricity in squirrel cage induction machines. Asymmetric electro-magnetic force caused by the frictional worn bearing, rotor misalignment and unbalanced rotor etc. generates an asymmetrical operation, vibration and electro-magnetic noise. The need for detection of these rotor eccentricities has pushed the development of monitoring methods with increasing sensitivity and noise immunity. In this paper, we focus on investigating the asymmetrical operation considering of unbalanced magnetic pull in squirrel-cage induction motor with 380 [V], 7.5 [kW], 4P, 1,768 [rpm]. The effects of the non-symmetric rotor and magnetic force are simulated by finite element method (FEM) and tested using search coils for measuring the actual air-gap flux.

Keywords

References

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