Title :
A novel method for modeling dynamic air-gap eccentricity in synchronous machines based on modified winding function theory
Author :
Al-Nuaim, Nabil A. ; Toliyat, Hamid A.
Author_Institution :
Dept. of Electr. Eng., Texas A&M Univ., College Station, TX, USA
fDate :
6/1/1998 12:00:00 AM
Abstract :
This paper presents the modeling of synchronous machines under eccentric rotors. The winding function theory accounting for all space harmonics and presented by earlier researchers has been modified to adopt a nonsymmetric air-gap for the calculation of machine winding inductances. The effect of dynamic air-gap eccentricity on the inductances of a salient-pole synchronous machine using the modified winding function approach (MWFA) has been discussed. The coupled magnetic circuits approach has been used for simulating the machine behavior under healthy and eccentric rotor conditions. The simulation results are in close agreement with the experimental results
Keywords :
inductance; machine theory; magnetic circuits; rotors; synchronous machines; coupled magnetic circuits; dynamic air-gap eccentricity; eccentric rotors; machine winding inductances; modified winding function approach; nonsymmetric air-gap; salient-pole synchronous machine; Air gaps; Frequency; Induction machines; Machine windings; Magnetic analysis; Magnetic flux; Rotors; Saturation magnetization; Stator windings; Synchronous machines;
Journal_Title :
Energy Conversion, IEEE Transactions on
