Coupled 2-D FEM and 1-D Micromagnetic Model for Transverse Anisotropy Tape-Wound Magnetic Cores

Abstract

We present a new approach for modeling high-frequency losses in transverse anisotropy magnetic tapes by solving a 1-D eddy-current problem coupled to a micromagnetic constitutive law. Contrary to earlier models, the model is derived using a magnetic flux-density conforming formulation. The model allows coupling the tape-level magnetization process to a 2-D finite element model for analyzing larger cores by homogenizing the tape layers. The developed model predicts the high-frequency losses in a good agreement with previously presented measured results and models, demonstrating potential for increased accuracy in the calculation of losses in tape-wound cores.