Eddy current and hysteresis losses in ferromagnetic media

This paper is a contribution to the evaluation of losses in ferromagnetic media, due to eddy currents and magnetic hysteresis, the field source being the time harmonic induced e.m.f. The fundamental field equations are solved numerically by using a finite element formulation, corresponding to the space discretization, and a second order trapezoidal (Crank-Nickolson) method for the time integration. The method is applied to a soft ferromagnetic sample, being the magnetic hysteresis simulated by using a classical Preisach model.