Eccentricity Fault Diagnosis Studying for a Round Rotor Synchronous Machine

Subject Areas : International Journal of Smart Electrical Engineering

Peyman Naderi ¹ (Faculty of Electrical Engineering, ShahidRajaee Teacher Training University, Tehran, Iran)
Sahar Sharouni ² (2Faculty of Electrical Engineering, Islamic Azad University of Borujerd , Borujerd, Iran)

Received: 2016-01-07 Accepted : 2016-01-07 Published : 2015-09-01

Keywords: Air-gap function, dynamic eccentricity, static eccentricity, synchronous machine,

Abstract :

The paper presents a mathematical base modeling combined to Modified-Winding -Function-Approach (MWFA) for eccentricity fault detection of a round-rotor synchronous machine. For this aim, a 6-polemachine is considered, and the machine inductances are computed byMWFA in healthy and also under eccentricity fault. A numerical discrete-time method has been proposed to machine modeling in voltage-fed case, and an exact analytical method is proposed to calculate the machine'scurrents and torque. A method is introduced for both static and dynamic eccentricity fault diagnosis, which is proposed for first time. A mathematical base method is introduced for machine modeling, and new results are obtained to a novel method addressing for eccentricity fault diagnosis. The method is validated by Finite-Element-Method (FEM) so accuracy of theproposed method is proofed.