Projeto de indutor utilizando lógica fuzzy

Abstract

Inductors are magnetic components used in various engineering fields. They are crucial for the operation of static converters, encompassing topologies such as Buck, Boost, and Buck-Boost. An inductor consists of a ferromagnetic core and a winding made of conductive material, like copper. The inductance of an inductor relies on factors such as the length and cross-sectional area of the core, the core material type, the number of turns in the winding, and the electric current flowing through it. The behavior of the magnetic material is depicted by its magnetization curve. Designing an inductor in regions close to saturation is challenging due to the difficulty in estimating values for magnetic flux density (𝐵) and magnetic field intensity (𝐻). To simplify this estimation, Fuzzy Logic is employed, enabling the modeling of problems using natural language expressed in object characteristics and rules governing these objects. Consequently, this study aims to develop a Fuzzy system that utilizes 𝐵 and 𝐻 variables in points near saturation to design the inductor for a specific current value in the intended circuit. The Fuzzy system is constructed using MATLAB's Fuzzy Logic Toolbox. To validate and substantiate the results of the proposed system, inductor values were analytically calculated.