Open AccessSoft switching high‐voltage gain dc–dc interleaved boost converter
Author(s) -
Aquino Ranoyca Nayana Alencar Leão,
Tofoli Fernando Lessa,
Praca Paulo Peixoto,
Oliveira Demercil de Souza,
Barreto Luiz Henrique Silva Colado
Publication year - 2015
Publication title -
iet power electronics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.637
H-Index - 77
eISSN - 1755-4543
pISSN - 1755-4535
DOI - 10.1049/iet-pel.2014.0275
Subject(s) - snubber , capacitor , voltage , topology (electrical circuits) , coupling (piping) , electronic engineering , computer science , electrical engineering , engineering , mechanical engineering
This study presents the qualitative and quantitative analyses, design procedure and experimental results on a soft switching cell applied to a high‐voltage gain interleaved boost converter. An active snubber cell is proposed as a possible solution for the increase of efficiency in a hard switching topology, where switching losses are drastically minimised. The main advantages of the introduced circuit are the common source terminal to all switches; zero‐voltage switching of the main switches; zero current switching of the auxiliary switches; low‐voltage stress across the switches; balanced voltage across the output capacitors; the presence of a magnetic coupling cell, which allows the gain to be significantly increased; and the magnetic components that are designed for twice the switching frequency. A prototype rated at 500 W is implemented and evaluated, where relevant issues are discussed to validate the theoretical assumptions.