Title :
Method for Modeling Time-Dependent Nonuniform Rotor/Stator Configurations in Electrical Machines
Author :
Lundin, Urban ; Wolfbrandt, Arne
Author_Institution :
Dept. of Technol., Uppsala Univ., Uppsala
fDate :
7/1/2009 12:00:00 AM
Abstract :
Nonuniform air gaps in electrical machines cause problems with forces and noise. There are a number of analytical and numerical methods to calculate the response due to nonuniform air gaps. In this paper, we present an efficient method based on an effective air gap permeability. Our unified method enables all nonuniform rotor-stator configurations to be simulated. We provide some results from simulations of static and dynamic eccentricity as well as irregularity.
Keywords :
air gaps; permeability; rotors; stators; synchronous machines; dynamic eccentricity; effective air gap permeability; electrical machines; forces; noise; nonuniform air gaps; static eccentricity; synchronous machines; time-dependent nonuniform rotor-stator configurations; Eccentricity; finite-element method (FEM); irregularities; unbalanced magnetic pull (UMP);
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2009.2015052
