A topological method used for field-circuit coupling

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Abstract
A lumped parameter model describing the outside electric connection of conductors is linked with a finite element model to compute the magnetic field distribution. A well- established method for circuit analysis is adapted for this purpose. A suitable analysis to consider solid conductors and stranded conductors simultaneously as parts of the external electric circuit is stated. This approach yields a general coupling mechanism that keeps symmetry if both the magnetic and the electric problems are symmetric. The generality of the method makes the implementation straightforward and powerful. The maturity of the method is proved by the computation of different eddy current problems.

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