GLOBAL ELEMENT ANALYSIS OF TRANSFORMER LEAKAGE FIELD AND TANK LOSSES

Abstract

A method based on variational principles is described for the computation of the leakage field in power transformers. The eddy-currents in the tank are taken into account. Two- dimensional models of both translational symmetry and axisymmetry are considered. The solution is obtained in the form of a double series with the coefficients calculated by simple formulas. Some flux plots are given to illustrate the results.