The fault diagnosis of rotor bars in squirrel cage induction motors by time-stepping finite element method

Author

Kim, Chang Eob ; Jung, Yong Bae ; Yoon, Sang Baeck ; Im, Dal Ho

Author_Institution

R&D Inst., Hyosung Ind. Co. Ltd., Seoul, South Korea

Volume

33

Issue

2

fYear

1997

fDate

3/1/1997 12:00:00 AM

Firstpage

2131

Lastpage

2134

Abstract

This paper presents a fault diagnosis of the rotor bars in squirrel cage induction motors. The defective rotor bars such as broken bars and high resistance are detected by analyzing the induced current in the coil caused by reluctance variation when the rotor is moving. In the analysis, the time stepping finite element method is used where the electromagnetic and circuit equations are coupled and the rotor movement is considered by automatic subdivision of air gap meshes. By the proposed method, various rotor fault conditions are simulated. The experimental results show that the analysis method is useful to detect rotor fault conditions

Keywords

air gaps; electric resistance; fault diagnosis; finite element analysis; machine theory; rotors; squirrel cage motors; air gap meshes; broken bars; circuit equations; defective rotor bars detection; electromagnetic equations; fault diagnosis; high resistance; induced current analysis; reluctance variation; rotor bars; rotor fault conditions; rotor movement; squirrel cage induction motors; time-stepping finite element method; Bars; Circuit faults; Coils; Electromagnetic analysis; Electromagnetic coupling; Equations; Fault diagnosis; Finite element methods; Induction motors; Rotors;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.582752

Filename

582752