Title :
A method for dynamic simulation of air-gap eccentricity in induction machines
Author :
Toliyat, Hamid A. ; Arefeen, Mohammed S. ; Parlos, Alexander G.
Author_Institution :
Dept. of Electr. Eng., Texas A&M Univ., College Station, TX, USA
Abstract :
In this paper, a method is proposed which enables the simulation of the air-gap eccentricity in induction machines. The method is based on the coupled magnetic circuit approach. The model is derived by means of winding functions, and no symmetry in windings layout is assumed. The parameters of the model are calculated directly from the geometry and winding layout of the machine. The effect of eccentricity is included in calculation of machine inductances. It is shown that by proper modeling of the induction motor it is possible to determine the effect of eccentricity on the machine startup, whether the machine is running off a sinusoidal supply or a converter. Theoretical foundations of the technique, as well as the detailed differential equations describing the machine performance under rotor eccentricity are presented
Keywords :
air gaps; differential equations; inductance; induction motors; machine theory; magnetic circuits; rotors; simulation; transient analysis; air-gap eccentricity; converter; coupled magnetic circuit approach; differential equations; dynamic simulation; induction machines; induction motor modeling; machine inductances; machine performance; machine startup; rotor bars; rotor eccentricity; sinusoidal supply; stator phases; transient modeling; winding functions; windings layout; Air gaps; Circuit simulation; Coupling circuits; Differential equations; Geometry; Induction machines; Induction motors; Machine windings; Magnetic circuits; Solid modeling;
Journal_Title :
Industry Applications, IEEE Transactions on
