International Journal of Innovative Research in Advanced Engineering (IJIRAE) ISSN: 2349-2163 Issue 08, Volume 8 (August 2021) https://www.ijirae.com/archives _____________________________________________________________________________________________________________________________________ IJIRAE:: ©2014-21, AM Publications, India - All Rights Reserved Page -251 ANALYSIS, DESIGN AND SIMULATION OF ZVS BASED HIGH CONVERSION RATIO ISOLATED DC-DC BUCK CONVERTER FOR ENERGY STORAGE SYSTEM S Megha PG- Scholar, Department of Power Electronics, University Visvesvaraya College of Engineering, Bangalore, Karnataka. megha83143@gmail.com Dr.Guruswamy K P Associate Professor, Department of Power Electronics, University Visvesvaraya College of Engineering, Bangalore, Karnataka. kpg_eeuvce@bub.ernet.in Publication History Manuscript Reference No: IJIRAE/RS/Vol.08/Issue09/SPAE10083 Research Article | Open Access Peer-review: Double-blind Peer-reviewed Article ID: IJIRAE/RS/Vol.08/Issue09/SPAE10083 Received: 12, August 2021 Accepted: 20, August 2021 Published Online: 17, September 2021 Volume 2021 | Article ID SPAE10083 | https://doi.org/10.26562/ijirae.2021.v0809.003 Citation: Megha & Dr.Guruswamy (2021). ANALYSIS, DESIGN AND SIMULATION OF ZVS BASED HIGH CONVERSION RATIO ISOLATED DC-DC BUCK CONVERTER FOR ENERGY STORAGE SYSTEM. International Journal of Innovative Research in Advanced Engineering, VIII, 251-264. doi: https://doi.org/10.26562/ijirae.2021.v0809.003 Editor-Chief: Dr.A.Arul Lawrence Selvakumar, Chief Editor, IJIRAE, AM Publications, India Copyright: ©2021 This is an open access article distributed under the terms of the Creative Commons Attribution License; Which Permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited Abstract: In this paper, a novel zero voltage switching (ZVS) is based high conversion ratio bidirectional DC-DC converter for the energy storage system proposed. Within the buck mode, the proposed converter is like that of a cascade consisting of an isolated buck-boost converter and a buck converter, thus achieving a high step-down ratio. Similarly, in the boost mode, the converter is analogous to the cascaded structure consisting of a boost converter and an isolated buck-boost converter, and then a high step-up ratio is achieved. Thus, a high conversion ratio has been established with the proposed converter. In addition to this ZVS eliminates switching losses and improves conversion efficiency. Furthermore, the validity and performance of the proposed converter are verified employing a prototype. Keywords: analysis, design, based, simulation, zvs I. INTRODUCTION Due to the enormous increase in energy and rapidly growing economy, the global energy crises have been drastically increased. Hence research on the environment-friendly systems such as electric vehicles and distributed power systems is carried out to deal with this energy problem. In these systems, we need Energy Storage System [ESS] like a battery is needed to save and use energy. PV Or Fuel Cell DC-DC Converter Bidirectional DC-DC Converter Battery Or Ultracapacitor Inverter Grid Fig.1 Typical distributed generation system