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

The Korean Institute of Electrical Engineers (대한전기학회)
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A Study on Analysis of Inverter-fed Induction Motor's Bearing Current using Improved Equivalent Ciruit Parameters

개선된 등가 파라미터를 이용한 인버터 구동 유도전동기의 축전류 해석에 관한 연구

  • 김병택 (군산대 공대 전자정보공학부) ;
  • 구대현 (한국전기연구원 Mechatronics 연구Group) ;
  • 홍정표 (한국전기연구원 Mechatronics 연구Group) ;
  • 권병일 (한양대 공대 전기공학과) ;
  • 전지훈 (LG Electronics DA연구소 T3 Group)
  • Published : 2007.04.01
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Abstract

An inverter driven induction motor has more superior dynamic characteristic than sine wave driven induction motor. But it has a problem with shaft voltage and bearing current in drive-motor system. This paper presents the analysis of bearing current in inverter-fed induction motor. The proposed method is based on using numerical method (FEM) to derive parasitic parameters in motor. Using the electric field analysis with FEM, the stored energy in dielectric materials of the motor can be calculated and the parasitic capacitances are obtained. Then we compared the proposed method with a conventional method in variable frequency and load conditions. From the comparision of simulation and experiment result, we confirmed that the proposed method is valid.

Keywords

References

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