Design of single-sided AC magnetic field generating coil for wireless power transfer

Abstract

In this paper, wireless power tranfer coil with novel winding arrangement is proposed to reduce unwanted magnetic field leakage in electronics charging application. The new winding arrangement generates single-sided magnetic field to suppress magnetic field leakage horizontally and vertically. The shielding effectiveness and wireless power transfer efficiency were compared with conventional coil which simply has windings in single direction by 3D EM solver simulation.