Induction motor fault recognition.

Leonard, Raymond Alexander

Abstract

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.

Citation

LEONARD, R.A. 1985. Induction motor fault recognition. Robert Gordon's Institute of Technology, MPhil thesis. Hosted on OpenAIR [online]. Available from: https://doi.org/10.48526/rgu-wt-1993280

• Thesis Type: Thesis
• Deposit Date: Sep 16, 2024
• Publicly Available Date: Sep 16, 2024
• DOI: https://doi.org/10.48526/rgu-wt-1993280
• Public URL: https://rgu-repository.worktribe.com/output/1993280
• Award Date: Jul 31, 1985