Open AccessIsolated soft‐switched boost DC–DC converter with low‐voltage stress and high step‐up ratio
Author(s) -
Santra Subhendu Bikash,
Kumar Kundan,
Mohapatra Srikanta,
Chatterjee Debashis
Publication year - 2018
Publication title -
the journal of engineering
Language(s) - English
Resource type - Journals
ISSN - 2051-3305
DOI - 10.1049/joe.2018.0072
Subject(s) - snubber , boost converter , voltage , lossless compression , diode , stress (linguistics) , computer science , power (physics) , clamper , photovoltaic system , electrical engineering , materials science , electronic engineering , capacitor , optoelectronics , engineering , physics , linguistics , philosophy , quantum mechanics , data compression , computer vision
This study presents a novel soft‐switched isolated boost converter which can provide a high‐step‐up ratio and high efficiency with low‐voltage stress for portable application as well as a photovoltaic‐assisted converter system. A lossless active clamp snubber circuit helps in achieving zero‐voltage‐switching turn‐off and zero‐current‐switching (ZCS) turn‐on of the main switch and ZCS turn‐off of diodes that reduce switching losses. An auxiliary switch with an energy recovery circuit helps to increase power conversion efficiency and reduces switching stress across the main switch. The proposed idea is simulation through computer‐assisted software PSIM 9.1.1 and validated experimentally through a designed prototype 250 W direct current (DC)–DC converter.