On-line current monitoring to diagnose airgap eccentricity in large three-phase induction motors-industrial case histories verify the predictions

Author

Thomson, W.T. ; Rankin, D. ; Dorrell, D.G.

Author_Institution

Robert Gordon Univ., Aberdeen, UK

Volume

14

Issue

4

fYear

1999

fDate

12/1/1999 12:00:00 AM

Firstpage

1372

Lastpage

1378

Abstract

An appraisal of on-line monitoring techniques to detect airgap eccentricity in three-phase induction motors is presented. On-line current monitoring is proposed as the most applicable method in the industrial environment and a novel analysis strategy is explained. The practical details of on-site case histories and analysis of the current spectra for each motor are presented. The results verify that the interpretation of the current spectrum proposed in this paper was successful in diagnosing airgap eccentricity problems in large, high voltage, three-phase induction motors

Keywords

air gaps; computerised monitoring; electric current measurement; fault diagnosis; induction motors; airgap eccentricity detection; airgap eccentricity diagnosis; current spectra; high voltage; industrial case histories; on-line current monitoring; on-line monitoring techniques; three-phase induction motors; Appraisal; Bars; Coils; Condition monitoring; History; Induction motors; Manufacturing industries; Stator cores; Stator windings; Voltage;

fLanguage

English

Journal_Title

Energy Conversion, IEEE Transactions on

Publisher

ieee

ISSN

0885-8969

Type

jour

DOI

10.1109/60.815075

Filename

815075