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.  

DIAGNOSIS OF STATIC ECCENTRICITY FAULT IN PERMANENT MAGNET SYNCHRONOUS MOTOR BY ON-LINE MONITORING OF MOTOR CURRENT AND VOLTAGE