Open AccessZVT high step‐up DC/DC converter with a novel passive snubber cell
Author(s) -
Zhu Binxin,
Ren Lulu,
Wu Xi,
Song Kun
Publication year - 2017
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.2016.0517
Subject(s) - snubber , uninterruptible power supply , capacitor , converters , voltage , diode , photovoltaic system , materials science , energy conversion efficiency , flyback converter , charge pump , forward converter , power (physics) , electronic engineering , electrical engineering , power density , boost converter , topology (electrical circuits) , engineering , optoelectronics , physics , quantum mechanics
A zero voltage turn‐off high step‐up DC/DC converter is presented. The conversion efficiency and power density are improved significantly by using a novel passive snubber cell, which only consists of two diodes and a snubber capacitor. The converter also provides high‐voltage conversion ratio as well as low‐voltage stress on switches and diodes, which make it suitable for some special industrial applications as electric‐vehicle, uninterruptible power supply system or photovoltaic power generation system. The topology, operation principles and performance characteristics are analysed in detail. Moreover, a maximum 800 W experimental prototype has been developed to validate the effectiveness of the theoretical analysis, and 96.2% efficiency has been achieved.