Numerical Determination of the Flux Distribution in a Salient Pole,Aircraft Alternator.

摘要

A two-dimensional numerical analysis is applied to determine the flux in the cross section of a wound rotor, salient pole alternator. The procedure takes full account of the nonlinearity of the magnetic material, the complicated contour of the alternator outline, and the presence of current density fields in the stator conductors and the field windings. The mathematical algorithm used in the numerical analysis is developed from theoretical considerations. All simplifying assumptions and boundary conditions are discussed. A nonuniform grid system is established to conform closely to the alternator outline with the fineness adjusted to insure adequate delineation of the flux paths at all points. The convergence is enhanced by incorporation of successive line overrelaxation and block relaxation techniques. The radial, magnetic induction and flux plots are shown for several load and no-load conditions. (Author)