Calculation of the 3D non-linear eddy current field in moving conductors and its application to braking systems

This paper presents a complete FE formulation for the calculation of 3D non-linear eddy current fields with ferromagnetic moving conductors. The formulation is realized by using the (A) over right arrow, V-(A) over right arrow formulation in combination with the Coulomb gauge. To consider non-rectangular shapes of geometries tetrahedral elements were employed. The computation procedure is applied to an eddy current braking system of a high velocity train and the resulting braking forces are compared to measurements.