| Abstract |
This paper introduces a new two-dimensional (2D) modeling approach for the fast calculation of inductorand transformer foil winding losses. The proposed modeling procedure is derived from the Partial Ele-ment Equivalent Circuit (PEEC) method, which is originally a full three-dimensional (3D) electromag-netic solution technique. With the presented modifications, the PEEC method can take into account theinfluence of an air gap fringing field and core material boundaries as well as skin- and proximity effect.A comparison to 2D Finite Element Method (FEM) simulations shows that the developed PEEC-basedapproach exhibits similar accuracy but shorter calculation times than the classical FEM modeling tech-niques typically employed for the calculation of non-uniform current distribution within foil windings.The new modeling approach is experimentally verified by calorimetric loss measurements of a gappedfoil winding E-core inductor. Due to the fast calculation speed of the new approach, optimizations ofinductive components with foil windings over a wide design space are finally possible. |
