Accuracy improvement in nonlinear magnetostatic field computations with integral equation methods and indirect total scalar potential formulations

Abstract

Purpose

The paper seeks to solve nonlinear magnetostatic field problems with the integral equation method and different indirect formulations.

Design/methodology/approach

To avoid large cancellation errors in cases where the demagnetizing field is high a difference field concept is used. This requires the computation of sources of the scalar potential of the excitation field.

Findings

A new formulation to compute these sources is presented. The improved computational accuracy is demonstrated with numerical examples.

Originality/value

The paper develops a novel formulation for the computation of sources of scalar excitation potential.

Citation

Hafla, W., Buchau, A. and Rucker, W.M. (2006), "Accuracy improvement in nonlinear magnetostatic field computations with integral equation methods and indirect total scalar potential formulations", COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, Vol. 25 No. 3, pp. 565-571. https://doi.org/10.1108/03321640610666718