Published May 30, 2014



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Alejandro Paz-Parra, MSc

José Luis Oslinger, PhD

Jairo Arcesio Palacios, PhD

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Abstract

This paper presents a mathematical model to obtaina failure indicator of stator faults based on the negativesequence component of the electric current. The modelcan be used in online diagnosis systems to separate theeffects of voltage unbalance factor and the constructiveasymmetries of the machine. Results of the application ofthe model were validated trough laboratory tests madeinto a specially modified motor and results were applied tosuccess diagnosis of two motors of higher electrical power.As a main result of the work, a low computationalmodel was obtained to diagnose a quick evolution failurethat can evolve quickly to a thermal collapse of the statorwinding with consequent repair costs.

Keywords

Induction motor, diagnosis, Inter-turn stator fault, unbalanced voltage factor, Short circuit., Electric motors, fault diagnosis, stresses, stators, short circuitsMotor de inducción, Diagnóstico, Falla estatórico, Factor de desequilibrio de tensiones, Corto circuito, Motores eléctricos de inducción, tensiones, estatores, cortocircuitos

References
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How to Cite
Paz-Parra, A., Oslinger, J. L., & Palacios, J. A. (2014). Stator failure diagnosis for squirrel cage induction motors through the negative sequence current. Ingenieria Y Universidad, 18(1), 141–158. https://doi.org/10.11144/Javeriana.iyu18-1.sfdf
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