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 magnet 

synchronous motor (PMSM). The study carried out by analyzing the harmonics obtained using Power 

Spectral Density (PSD) of stator current and voltage at no load condition. Motor stator current and 

voltage are uploaded to pc with software of used inverter and their harmonics obtained by using 

LabVIEW Signal Express Toolbox program for healthy and faulty condition. In addition, performance 

of the motor over the period of starting up to the steady state is investigated. The experimental results 

are illustrated in graph diagrams and results showed that the presented method is very effective and 

easy to use for prognosis of static eccentricity fault.