EQUIVALENT ELECTRIC CIRCUITS APPROACH FOR THE MODELING OF NON-LINEAR ELECTROMAGNETIC FIELDS

Abstract

In this paper a method for the analysis of non-linear three dimensional electromagnetic field is presented The conductive and magnetic regions of the examined system are subdivided in elementary volume elements in which a uniform current density J and magnetization M is assumed. By integrating Ohm's law inside the conductive regions, a set of equations representing the equilibrium equations of an equivalent electric network is obtained. The knowledge of the currents in the conductive regions allows the evaluation of the electromagnetic fields and the determination of the forces among different bodies. Applications of the method to the solution of benchmark problems of time varying linear systems, and non-linear static cases are presented. [Vol. 9, No. 2 (1994), Special Issue on The Numerical Computation of Low Frequency Electromagnetic Fields, pp 67-73]