Diagnosis of static eccentricity fault in permanent magnet synchronous motor by on-line monitoring of motor current and voltage

Abstract

This paper presents an experimental study on diagnosis of eccentricity fault in permanent magnetsynchronous motor (PMSM). The study carried out by analyzing the harmonics obtained using PowerSpectral Density (PSD) of stator current and voltage at no load condition. Motor stator current andvoltage are uploaded to pc with software of used inverter and their harmonics obtained by usingLabVIEW Signal Express Toolbox program for healthy and faulty condition. In addition, performanceof the motor over the period of starting up to the steady state is investigated. The experimental resultsare illustrated in graph diagrams and results showed that the presented method is very effective andeasy to use for prognosis of static eccentricity fault.