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A numerical method for the solution of eddy current problems which involve magnetic saturation, relative motion and time-varying field is presented. The model is based on the finite-element method and the A-ψ-φ formulation is employed. The moving conductor is modelled using three components of magnetic vector potential, whereas the rest of the problem domain is modelled using either of two scalar potentials. The model is verified by means of experimental measurements made on a test problem in which the three-dimensional effects are clearly evident.
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Williamson et al. (1993) studied this question.
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