Abstract

The use of Coulomb's gauge is sufficient for a unique solution in 3-D magnetostatic field calculations in terms of the magnetic vector potential. For the sinusoidal steady-state eddy current problem Coulomb's gauge is not sufficient. The combination of Coulomb's gauge and an eddy current constraint provides a simple way of guaranteeing uniqueness. A formulation for 3-D electromagnetic fields utilizing this constraint is proposed. Results comparing this formulation with other finite-element formulations and with experimental data are given. >

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