Citation

Thomson WT, Leonard RA, Milne AJ, Penman J. Reliab. Eng. 1984; 9(1): 49-64.

Copyright

(Copyright © 1984, Elsevier Publishing)

DOI

10.1016/0143-8174(84)90006-4

PMID

unavailable

Abstract

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.