Failure identification of offshore induction motor systems using on-condition monitoring

This paper reports a study carried out into the identification of faults in three-phase squirrel cage induction motors. The reasons for monitoring vibration, current and stray flux signals in a unified approach are presented and a fault producing test rig and computer-based signal processing system...

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Bibliographic Details
Published in:Reliability engineering 1984, Vol.9 (1), p.49-64
Main Authors: Thomson, W.T., Leonard, R.A., Milne, A.J., Penman, J.
Format: Article
Language:English
Subjects:
Applied sciences
Exact sciences and technology
Operational research and scientific management
Operational research. Management science
Reliability theory. Replacement problems
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Summary:This paper reports a study carried out into the identification of faults in three-phase squirrel cage induction motors. The reasons for monitoring vibration, current and stray flux signals in a unified approach are presented and a fault producing test rig and computer-based signal processing system are described. The changes which occur in the signals during single-phasing, broken rotor bar, rotor-stator eccentricity and inter-turn winding fault conditions are discussed and a sample of the signature patterns is presented. The results show that a malfunction can be identified from various signals and in certain instances the reliability of fault diagnosis could be improved by the monitoring strategy proposed in this paper.
ISSN:0143-8174
1878-2809
DOI:10.1016/0143-8174(84)90006-4