Isolated soft-switched boost DC–DC converter with low-voltage stress and high step-up ratio

The Journal of Engineering

Kundan Kumar¹  Subhendu Bikash Santra² 

[1] Industrial Engineering Department , Laboratory of Electric Systems for Automation and Automotive, University of Padova , Padova, Veneto35131 , Italy;School of Electrical Engineering, KIIT University , Bhubaneswar, Odisha 751024 , India

关键词: power conversion efficiency;    direct current–DC converter;    isolated soft-switched boost DC–DC converter;    low-voltage stress;    ZCS;    power 250.0 W;    energy recovery circuit;    computer-assisted software PSIM 9.1.1;    lossless active clamp snubber circuit;    auxiliary switch;    photovoltaic-assisted converter system;    zero-current-switching;   

DOI  :  10.1049/joe.2018.0072

学科分类：工程和技术（综合）

来源: IET

【 摘 要 】

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.

【 授权许可】

CC BY