Influence of the magnetic steel encasing of induction motors on the efficiency of the rotor faults diagnosis based on the harmonics of the coil sensors output voltage

Author

Fireteanu, V. ; Taras, P.

Author_Institution

Electr. Eng. Fac., EPM-NM-Lab., Politeh. Univ. of Bucharest, Bucharest, Romania

fYear

2012

fDate

2-5 Sept. 2012

Firstpage

1745

Lastpage

1750

Abstract

This paper deals with the influence of the magnetic steel encasing of squirrel cage induction motors on the efficiency of one broken bar and rotor dynamic eccentricity faults diagnosis based on the harmonics of the output voltage of coil sensors placed outside the motor. The effects of the rotor faults on the electromagnetic torque and on the unbalanced force of rotor - stator interaction are evaluated. The most important harmonics for fault diagnosis are determined for a high power low rated slip motor, without and with a magnetic steel encasing thick enough with respect the penetration depth of the main traveling field of the motor.

Keywords

coils; fault diagnosis; machine testing; rotors; slip (asynchronous machines); squirrel cage motors; stators; torque; broken bar; coil sensors; electromagnetic torque; magnetic steel encasing; penetration depth; rotor dynamic eccentricity faults diagnosis; rotor-stator interaction; slip motor; squirrel cage induction motors; Fault diagnosis; Harmonic analysis; Induction motors; Magnetic fields; Rotors; Steel; Synchronous motors; coil sensor harmonics; computer simulation; induction motors; rotor fault diagnosis;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Machines (ICEM), 2012 XXth International Conference on

Conference_Location

Marseille

Print_ISBN

978-1-4673-0143-5

Electronic_ISBN

978-1-4673-0141-1

Type

conf

DOI

10.1109/ICElMach.2012.6350117

Filename

6350117