Finite element analysis and diagnosis of the one broken bar fault in the squirrel cage induction motors

Author

Fireteanu, Virgiliu ; Taras, Petrica ; Stamate, Marcel

fYear

2012

fDate

24-26 May 2012

Firstpage

411

Lastpage

416

Abstract

The paper deals with the finite element analysis of the electromagnetic field in a medium power squirrel cage induction motor and with the diagnosis of a rotor fault based on the time and space dependent magnetic field outside the motor. The effects of the one broken bar fault on the electromagnetic torque, on the rotor-stator interaction force and on the external magnetic field are evaluated. The harmonics of the output voltage of a coil sensor are determined for the motor without and with magnetic steel encasing, thick enough with respect the diffusion of the main traveling electromagnetic field of the motor. The influence of the motor load on the fault diagnosis efficiency based on the output voltage harmonics is analyzed.

Keywords

electric sensing devices; fault diagnosis; finite element analysis; harmonic analysis; squirrel cage motors; broken bar fault diagnosis; coil sensor; electromagnetic field; electromagnetic torque; finite element analysis; magnetic steel encasing; medium power squirrel cage induction motor; motor load; output voltage harmonic analysis; rotor fault diagnosis; rotor-stator interaction force; space dependent magnetic field; time dependent magnetic field; Electromagnetics; Harmonic analysis; Induction motors; Magnetic fields; Rotors; Synchronous motors; Torque;

fLanguage

English

Publisher

ieee

Conference_Titel

Optimization of Electrical and Electronic Equipment (OPTIM), 2012 13th International Conference on

Conference_Location

Brasov

ISSN

1842-0133

Print_ISBN

978-1-4673-1650-7

Electronic_ISBN

1842-0133

Type

conf

DOI

10.1109/OPTIM.2012.6231804

Filename

6231804