Simple Procedure to Compute the Inductance of a Toroidal Ferrite Core from the Linear to the Saturation Regions

Rosa Ana Salas; Jorge Pleite

doi:10.3390/ma6062452

Simple Procedure to Compute the Inductance of a Toroidal Ferrite Core from the Linear to the Saturation Regions

Materials (Basel). 2013 Jun 17;6(6):2452-2463. doi: 10.3390/ma6062452.

Authors

Rosa Ana Salas¹, Jorge Pleite²

Affiliations

¹ Electronic Technology Department, Higher Polytechnic School, Carlos III University of Madrid, Avda. de la Universidad, 30, 28911, Leganés, Madrid, Spain. rsalas@ing.uc3m.es.
² Electronic Technology Department, Higher Polytechnic School, Carlos III University of Madrid, Avda. de la Universidad, 30, 28911, Leganés, Madrid, Spain. pleite@ing.uc3m.es.

Abstract

We propose a specific procedure to compute the inductance of a toroidal ferrite core as a function of the excitation current. The study includes the linear, intermediate and saturation regions. The procedure combines the use of Finite Element Analysis in 2D and experimental measurements. Through the two dimensional (2D) procedure we are able to achieve convergence, a reduction of computational cost and equivalent results to those computed by three dimensional (3D) simulations. The validation is carried out by comparing 2D, 3D and experimental results.

Keywords: 2D Finite Element Analysis; nonlinear inductors; soft ferrite cores.