Fast three-dimensional analysis of eddy currents in Litz wire using integral equation

Eddy current loss in a Litz wire which has three-dimensional structure is analyzed using integral equation method considering proximity effect. In the present method, one-dimensional integral equation is formulated for the perpendicular component of the complex magnetization vector generated by eddy currents in the wire. It can effectively be solved by iterative methods to compute the eddy currents due to proximity effect.