A Method for Rotor Vibration Monitoring of Induction Motor by Air-gap Flux Detection

Author

Don-Ha Hwang ; Jeong-Woo Jeon ; Dong-Sik Kang ; Byong-Kuk Kim ; Yun-Hyun Cho ; Dong-Hee Kim

Author_Institution

Power Facility Diagnosis Res. Group, Korea Electrotechnol. Res. Inst., Changwon

fYear

2006

fDate

18-22 June 2006

Firstpage

1

Lastpage

5

Abstract

This paper presents results of the finite-element (FE) analysis and experiment of air-gap flux variation in induction motor when rotor eccentricity phenomenon occurs. An accurate modeling and analysis of rotor vibration in the motor are made using air-gap flux simulation, and search coils are used for measuring the actual magnetic flux. The simulated vibration system with 4-poles, 380 [V], 7.5 [kW], 1,768 [rpm] induction motor is built, and search coils are designed and inserted under the stator wedge of the motor. The FE analysis results are compared with experiment test results, and it shows that it is an effective method for developing on-line monitoring system on rotor vibration of an induction motor

Keywords

condition monitoring; design engineering; finite element analysis; induction motors; magnetic flux; rotors; stators; vibrations; 380 V; 7.5 kW; FE analysis; air-gap flux detection; air-gap flux variation; finite-element analysis; induction motor; online monitoring system; rotor eccentricity phenomenon; rotor vibration monitoring; search coils; stator wedge; Air gaps; Analytical models; Coils; Finite element methods; Induction motors; Iron; Magnetic analysis; Monitoring; Rotors; Vibration measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics Specialists Conference, 2006. PESC '06. 37th IEEE

Conference_Location

Jeju

ISSN

0275-9306

Print_ISBN

0-7803-9716-9

Type

conf

DOI

10.1109/PESC.2006.1712193

Filename

1712193