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Discriminating the Simultaneous Occurrence of Three-Phase Induction Motor Rotor Faults and Mechanical Load Oscillations by the Instantaneous Active and Reactive Power Media Signature Analyses

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2 Author(s)
M'hamed Drif ; Instituto de Telecomunicações, University of Coimbra, Coimbra, Portugal ; António J. Marques Cardoso

This paper deals with the use of the instantaneous active and reactive power signature analyses and their derived signals-the instantaneous power factor and phase angle - for discriminating broken rotor bars and airgap eccentricity conditions (rotor faults) from mechanical load oscillation effects in operating three-phase squirrel cage induction motors. Both simulation and experimental results are presented to show the effectiveness and the merits of the proposed approach that offers the possibility to distinguish between the three conditions by comparing the signature analyses of two different quantities for each abnormality condition.

Published in:

IEEE Transactions on Industrial Electronics  (Volume:59 ,  Issue: 3 )