32 International Journal for Modern Trends in Science and Technology Analysis of Different Multilevel Converter Topologies for Photovoltaic Applications N.Das Jaya Raj 1 | P.Bala Krishna 2 | K.Manoz Kumar Reddy 3 1 PG Scholar, Department of EEE, Aditya College of Engineering, Surampalem, Andhra Pradesh, India. 2 Assistant Professor, Department of EEE, Aditya College of Engineering, Surampalem, Andhra Pradesh, India. 3 Professor & Head, Department of EEE, Aditya College of Engineering, Surampalem, Andhra Pradesh, India. To Cite this Article N.Das Jaya Raj, P.Bala Krishna and K.Manoz Kumar Reddy, DzAnalysis of Different Multilevel Converter Topologies for Photovoltaic Applicationsdz, International Journal for Modern Trends in Science and Technology, Vol. 03, Issue 09, September 2017, pp.-32-38. This project deals with the different topology of multilevel converters, which are suitable for use in medium and high power photovoltaic (PV) applications. Multilevel converters offer several advantages compared to conventional types. These converters will achieve lower total harmonic distortion and better efficiency. Multilevel converters provide high quality output while using the low switching frequency which affects the switching losses, harmonic filters and size of semiconductor switches. This research investigates various topologies of multilevel converter for high power photovoltaic applications and compares their THD, efficiency, number of required semiconductors and other important characteristics. All topologies are simulated using MATLAB/Simulink in the same operating conditions. Finally, the more suitable multilevel topology is selected with respect to the simulation results. Keywords: Multilevel Converter Topology, Photovoltaic Applications, power quality, THD, Efficiency Copyright © 2017 International Journal for Modern Trends in Science and Technology All rights reserved. I. INTRODUCTION Multilevel inverters have been under research and development for more than three decades and have found successful industrial applications. However, this is still a technology under development, and many new contributions and new commercial topologies have been reported in the last few years. The aim of this dissertation is to group and review recent contributions, in order to establish the current state of the art and trends of the technology to provide readers with a comprehensive and insightful review of where multilevel converter technology stands and is heading. This chapter first presents a brief overview of well-established multilevel inverters strongly oriented to their current state in industrial applications and then centers the discussion on the new multilevel inverters that have made their way into the industry. Multilevel inverters have been attracting increasing interest recently the main reasons are; increased power ratings, improved harmonic performance, and reduced electromagnetic interference (EMI) emission that can be archived with multiple dc levels that are synthesis of the output voltage waveform. In particular multilevel inverters have abundant demand in applications such as medium voltage industrial drives, electric vehicles, and grid connected photovoltaic systems. The present work provides a solution to design an efficient multilevel topology which is suited for medium and high power applications. In the subsequent sections the research background is discussed in detailed. Motivation and objectives are clearly outlined. ABSTRACT International Journal for Modern Trends in Science and Technology Volume: 03, Issue No: 09, September 2017 ISSN: 2455-3778 http://www.ijmtst.com