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A Novel and Effective Method of Static Eccentricity Diagnosis in Three-Phase PSH Induction Motors

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2 Author(s)
Konstantinos N. Gyftakis ; Laboratory of Electromechanical Energy Conversion, Department of Electrical and Computer Engineering, University of Patras, Rion-Patras, Greece ; Joya C. Kappatou

Eccentricity-related faults are very common in induction motors and that is the reason for the extensive and worldwide research on their prompt diagnosis during the past decades. Previous works have shown that traditional diagnostic methods cannot offer reliable results for principal slot harmonics (PSH) induction motors. Moreover, most works were focused in the detection of dynamic and mixed, rather than static eccentricity. This paper is focused on the detection of the static eccentricity fault and its severity in PSH induction motors. The proposed method is original and proves to be reliable for the static eccentricity fault detection, even when the severity of the fault is low. The work was carried out with both finite element method (FEM) simulations and experimental testing.

Published in:

IEEE Transactions on Energy Conversion  (Volume:28 ,  Issue: 2 )