Abstract
For steady-state eddy current problems in Plane and axisymmetric multiconductor systems calculations by means of three different methods are described. The first method is a finite element approach using the superposition principle resulting in the admittance matrix of the total multiconductor system. The second method described is the integrodifferential approach providing a direct implementation of the total current condition. In case of multiconductor systems consisting of sub-systems with series connected conductors and given voltages the integrodifferential method has to be used combined with the superposition principle. The third method is based on the numerical solution of the underlying Fredholm integral equation of second kind. Some examples are given to show the particular advantages and disadvantages of the various methods with respect to computation time and accuracy of solution. Furthermore, the application of different higher-order isoparametric elements for each of the methods is investigated.
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