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Characteristics Analysis on the Effects of Rotor Eccentricity in Squirrel-cage Induction Motor  

Kim, Mi-Jung (동아대 공대 전기공학과)
Kim, Byong-Kuk (동아대 공대 전기공학과)
Hwang, Don-Ha (한국전기연구원 산업전기연구단)
Kang, Dong-Sik (한국전기연구원 전력설비진단연구그룹)
Cho, Yun-Hyun (동아대학교 전기공학과)
Publication Information
The Transactions of The Korean Institute of Electrical Engineers / v.56, no.2, 2007 , pp. 289-294 More about this Journal
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
Eccentricity; Asymmetric; Unbalanced magnetic pull; Squirrel cage induction motor;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
Times Cited By SCOPUS : 0
연도 인용수 순위
1 Don-Ha Hwang, et al., 'A Method for Dynamic Simulation and Detection of Air-gap Eccentricity in Induction Motors by Measuring Flux Density', IEEE CEFC 2006, Miami, USA, Paper No. PA7-7, April 30th - May 3rd 2006
2 황돈하 外, '유도전동기의 편심에 의한 회전자 진동해석', 2005, 대한전기학회 하계 학술대회 논문집(B), pp. 1201-1203 2005.7.18-20   과학기술학회마을
3 A. Tenhunen, et al., 'Spatial Linearity of Unbalanced Magnetic Pull in Induction Motors during Eccentric Rotor Motions', 15th International Conference on Electrical Machines (ICEM 2002), Bruges, Belgium, Vol. 1, pp. 330-335, Aug. 25-28, 2002
4 H.A. Toliyat, et al., 'A Method for Dynamic Simulation and Detection of Air-Gap Eccentricity in Induction Machines', IEEE Trans. on Industry Applications, Vol. 32, No.4, pp. 910-918, Jul./Aug. 1996   DOI   ScienceOn
5 O.V. Thorsen and M. Dalva, 'Method of Condition Monitoring and Fault Diagnosis for Induction Motors', ETEP, Vol. 8, No.5, pp. 383-395, 1998
6 D.H. Hwang, et al., 'Analysis of a Three Phase Induction Motor under Eccentricity Condition', IEEE IECON 2005, North Carolina, USA, pp. 2609-2613, Nov. 6-10, 2005
7 Subhasis Nandi et al, 'Condition Monitoring and Fault Diagnosis of Electrical Motors-A Review', IEEE Trans. on Energy conversion, Vol. 20, No 4, pp. 719-729, 2005   DOI   ScienceOn
8 황돈하 外, '유도전동기의 회전자 진동에 따른 공극의 자속변화 해석', 2004, 대한전기학회 전기기기 및 에너지변환시스템부문회 춘계학술대회 논문집, pp 62-64
9 W.T. Thosom and M. Fenger, 'Industrial Application of Current Signature Analysis to Diagnose Faults in 3-Phase Squirrl Cage Induction Motors', Conference Record of 2000 Annual Pulp and Paper Industry Technical Conference, pp. 205-211, 2000