Equivalent Electrical Model of an Inductor Excited by a Triangular Current Including Saturation

Abstract

A model for an equivalent electrical circuit designed for a ferrite (3C90) inductor usually used in power converters excited by a non-sinusoidal current appropriate for use in power electronics is proposed. This study, based on 3D finite element analysis, leads to significant precision advantages over 2D analysis for non-symmetric inductors. The frequency range of the analysis for the toroidal core was between 15 kHz and 1 GHz, with different levels of excitation in non-saturation and saturation status focusing on the power loss.

Keywords

• ferrite inductors
• 3d finite element analysis
• power losses
• saturation
• hysteresis
• eddy current losses
• magnetization