Open AccessAnalysis and experimental verification of a single‐switch high‐voltage gain ZCS DC–DC converter
Author(s) -
Hassan Waqas,
Lu Dylan DahChuan,
Xiao Weidong
Publication year - 2019
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.2019.0076
Subject(s) - inductor , leakage inductance , inductance , diode , topology (electrical circuits) , voltage , boost converter , electronic engineering , computer science , materials science , electrical engineering , optoelectronics , engineering
This study proposes and analyses the integration of soft‐switching technique with a single switch, non‐isolated, coupled inductor DC–DC converter to achieve high efficiency and high step‐up conversion ratio. The topology optimally integrates the coupled inductor and soft‐switching technique using a parallel LC resonant tank circuit to maintain zero‐current switching (ZCS) for on/off switching. The leakage inductance of the coupled inductor alleviates the reverse‐recovery issue of diodes, and diodes can operate under ZCS condition. Moreover, the converter operates in a lower frequency range due to high step‐up voltage gain. The principle of operation and steady‐state analyses of the proposed converter are presented. A prototype validates the theoretical analysis and demonstrates a higher peak efficiency of 96.43% than the corresponding hard‐switched converter.