A comparative numerical study of repulsive forces for stabilizing a rectangular aluminum plate between ac induction type and ac ampere type magnetic levitation methods

Abstract

This paper deals with the comparative numerical study of repulsive forces acting on a rectangular aluminum plate by using two methods of magnetic levitation (maglev) – conventional ac induction type maglev and ac ampere type maglev proposed by the authors. We made up three-dimensional finite element models for these maglev methods and evaluated calculated repulsive forces in each axis of orthogonal coordinates. As a result, we achieved computer-aided visualization of eddy current in a levitated aluminum plate and magnetic flux around the plate. In addition, we found that the stability in the guidance direction is fully maintained in both methods, and the repelling force of ac ampere type maglev in the conveyance direction decrease compared to that of ac induction type maglev.