Work

Magnetic Integration Applied to an Isolated Single-Stage AC–DC Converter

Year: 2025

Type: article

Abstract: This work proposes a novel magnetic integration approach applied to a four-leg interleaved single-phase ac-dc converter topology, aimed at minimizing component count and increasing power density. The proposed design integrates an input filter inductor, two autotransformers, and two high-frequency transformers into a single magnetic structure. Using an equivalent electrical circuit model, a consistent methodology and an iterative optimized design process are derived. The magnetic arrangement and design methodology are experimentally validated using a 6.6 kW prototype. A comparative analysis with multi-component structures across various designsis presented based on a Pareto front, demonstrating that the proposed magnetic integration solution achieves lower magnetic losses and a reduced volume. Within a switching frequency range of 50 kHz to 200 kHz, reductions of up to 33.16% in losses and 55.89% in the magnetic volume are achieved.

Source: IEEE Open Journal of Power Electronics

DOI: 10.1109/ojpel.2025.3588047

Authors: Samanta Gadelha Barbosa, José Willamy Medeiros de Araújo, Jens Friebe, Fernando Lessa Tofoli, Demercil de Souza Oliveira

Institutions: Universidade Federal do Ceará, University for International Integration of the Afro-Brazilian Lusophony, University of Kassel, Federal University of São João del-Rei

Language: English

Topic: Advanced DC-DC Converters

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

SDGs: Industry, innovation and infrastructure, Affordable and clean energy

Open Access status: gold

Estimated APC paid: $2,075