Numerical Solution of Three-dimensional Eddy Current Problems

Abstract

A general numerical method is given for the solution of quasi-stationary electromagnetic field problems. The integral equation-type formulation used permits the elimination of field quantities of inactive regions (air etc.) from the calculation. Some difficulties present in other methods (like surface charges etc.) are also avoided. The use of global variables in connection with the coordinate-independent (tensorial) form of the basic equations is likely to be helpful for an easy definition of a class of practical problems for a general computer program. A numerical example is included.