We propose a new implementation of the finite element approximation of eddy current problems using asudprincipal unknown the magnetic field. In the non-conducting region a scalar magnetic potential is introduced.udThe method can deal automatically with any topological configuration of the conducting region and, beingudbased on the search of a scalar magnetic potential in the non-conducting region, has the advantage of makinguduse of a reduced number of unknowns. Several numerical tests are presented for illustrating the performanceudof the proposed method; in particular, the numerical simulation of a new type of transformer of complicatedudtopological shape is shown.
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