Improvement of the Finite Element Analysis of 3D, Nonlinear, Periodic Eddy Current Problems Involving Voltage Driven Coils under DC Bias

摘要

Different techniques are investigated to improve the numerical solution process by the means of the finite element method of 3-dimensional, time-periodic, nonlinear eddy current problems under the influence of DC bias applying voltage excitation. The procedures of treating the equation system including DC bias are applied to 3-dimensional models of one- and three-phase benchmark transformer problems. The underlying nonlinear iteration technique is the time-periodic fixed-point method. Potential benefits of a static initialization procedure are investigated.