Faults Classification Scheme for Three Phase Induction Motor

Mohammed Obaid Mustafa, George Nikolakopoulos and Thomas Gustafsson
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Mohammed Obaid Mustafa: Department of Computer Science, Electrical and Space Engineering, Luleå University of Technology, Luleå, Sweden
George Nikolakopoulos: Department of Computer Science, Electrical and Space Engineering, Luleå University of Technology, Luleå, Sweden
Thomas Gustafsson: Department of Computer Science, Electrical and Space Engineering, Luleå University of Technology, Luleå, Sweden

International Journal of System Dynamics Applications (IJSDA), 2014, vol. 3, issue 1, 1-20

Abstract: In every kind of industrial application, the operation of fault detection and diagnosis for induction motors is of paramount importance. Fault diagnosis and detection led to minimize the downtime and improves its reliability and availability of the systems. In this article, a fault classification algorithm based on a robust linear discrimination scheme, for the case of a squirrel–cage three phase induction motor, will be presented. The suggested scheme is based on a novel feature extraction mechanism from the measured magnitude and phase of current park's vector pattern. The proposed classification algorithm is applied to detect of two kinds of induction machine faults, which area) broken rotor bar, and b) short circuit in stator winding. The novel feature generation technique is able to transform the problem of fault detection and diagnosis into a simpler space, where direct robust linear discrimination can be applied for solving the classification problem. And thus a clear classification of the healthy and the faulty cases can be robustly performed, by having the optimal hyper plane. This method can separate the feature current classes in a low dimensional subspace. Robust linear discrimination has been one of the most widely used fault detection methods in real-life applications, as this methodology seeks for directions that are efficient for discrimination and at the same time applies a straight-forward implementation. The efficacy of the proposed scheme will be evaluated based on multiple simulation results in different fault types.

Date: 2014
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