Induction motor fault recognition.

The work presented in this thesis is based on theoretical and experimental investigations into the changes in measurable squirrel cage induction machine parameters such as vibration, line current and leakage flux which alter during machine faults. Initially a survey was conducted to determine which machine failures were of concern to industrial operators. Faults analysed in this thesis include rotor bar faults, unbalanced supply, eccentricity and interturn winding faults. Experimental results are given for each fault type. Work was also done in predicting the natural frequencies of the experimental stator using a standard finite element package. The results from this analysis were compared with experimental results and shown to be realistic. The main conclusion drawn from this thesis is that there are several differences in the parameters observed during normal and fault operation, the prediction of a fault being dependent on changes of certain components of the various signal spectra. The changes in these various components can be supported theoretically.

Name dc:type.qualificationname

PhD

Level dc:type.qualificationlevel

Doctoral

Grantor dc:publisher.institution

Robert Gordon's Institute of Technology

Year dc:date.issued

1985

Author dc:creator

• Leonard, Raymond Alexander

Advisor dc:contributor.advisor

• W.T. Thomson

• Vibration
• Line current
• Leakage flux
• Machine faults
• Rotor bar faults
• Finite element package
• Natural frequencies
• Signal spectra

Language dc:language

en

Identifier

oai:rgu-repository.worktribe.com:1993280
https://doi.org/10.48526/rgu-wt-1993280

OAI identifier oai:identifier

oai:rgu-repository.worktribe.com:1993280