A Non-Isolated High-Gain DC to DC Converter Connected Multi-level Inverter for Photo-Voltaic Energy Sources

C. Bharatiraja; K.  Lakshmikhandan; M.S. Kamalesh; D. Rajasekaran; Bhekisipho  Twala

doi:10.6180/jase.202106_24(3).0017

A Non-Isolated High-Gain DC to DC Converter Connected Multi-level Inverter for Photo-Voltaic Energy Sources

C. Bharatiraja This email address is being protected from spambots. You need JavaScript enabled to view it.¹, K. Lakshmikhandan², M.S Kamalesh³, D. Rajasekaran⁴, and Bhekisipho Twala⁵

¹Department of Electrical and Electronics Engineering, SRM Institute of Science and Technology, SRM Nagar, Kattankulathur 603203, Kanchipuram, Chennai, TN, India
²Department of Electrical and Electronics Engg, Adhiparasakthi College of Engineering, Kalavai, Tamilnadu, India
³Department Electrical and Electronics Engineering, Kongu Engineering College, Tamilnadu, India
⁴Department of Electrical and Electronics Engineering, R.M.D. Engineering College, Chennai, India
⁵Faculty of Engineering & the Built Environment, Durban University of Technology (DUT), South Africa

Received: July 22, 2020
Accepted: October 22, 2020
Publication Date: June 1, 2021

Copyright The Author(s). This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are cited.

Download Citation: ||https://doi.org/10.6180/jase.202106_24(3).0017

ABSTRACT

The high-gain DC to DC Converter widely used in industrial and power system applications. In particular, the non-isolated converters are highly prepared due to their size and cost. The application such as photo-voltaic (PV) and wind power system, the combination of non-isolated converter and inverter are used. These converters are selected for the specific applications depend on the circuit complexity, reliability and cost. With respect to PV applications, the simple boost wider range voltage gain DC to DC converter is better choice to meet the DC-link voltage of the PV inverters. Comparing with conventional inverters, multi-level inverters (MLIs) are the worthy option, as it has a superiority to suppress the voltage and current harmonics. Even though the reduced switch MLIs are well-established for medium voltage PV system, still the challenges beside to improve voltage harmonic, voltage enhancement, increasing the inverter efficiency etc. Hence, in this paper proposes the PV Power system with single switch non-isolated high-gain DC to DC converter and reduced switch seven-level MLI inverter. The proposed converter is developed with the mixtures of boost and cuk converter; hence it has wider range of control with good efficiency. The experimental study of 400W PV system is established. The experimental results are conformed the theoretical investigation.

Keywords: DC - DC Converter, Multilevel Inverter, PV Powered power converter, Integrated DC – DC Converter

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