A High Step-up Single-switch based Cubic-gain DC–DC Converter for PV Applications

Authors

Keywords:

Coomon ground configuration, Cubic voltage gain, high step-up topology, PV applications, Voltage lift technique, single switch DC-DC converter

Abstract

The growing use of renewable energy sources (RES’s), particularly photovoltaic(PV) systems, has increased the need for efficient high step-up DC-DC converters. This paper proposes a single switch cubic-gain (SSCG) converter capable of achieving a high voltage gain with minimal circuit complexity. The proposed converter achieves cubic voltage gain through the integration of a quadratic boost converter(QBC) combined with a voltage-lift technique, enabling substantial voltage boosting using only a single switch. Detailed steady-state analysis are carried out under both continuous and discontinuous conduction modes, along with an evaluation of the influence of non-ideal components on practical voltage gain and efficiency. The comparison results with the existing converter topologies highlight the distinctive advantages of the SSCG converter, including the simple structure, minimum total component count, continuous input current, common ground configuration, and high step-up capability. A 48/400 V, 50 kHz, 200 W hardware prototype is developed and experimentally verified, demonstrating close agreement with theoretical analysis. The results confirm that the proposed SSCG converter is a promising solution for high-gain photovoltaic energy conversion applications.

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Author Biographies

Jayasri Boda, Graduate Student Member, IEEE

Jayasri Boda was born in Achampet, Telangana, India. She received her B.Tech. degree in Electrical and Electronics Engineering from TKR College of Engineering and Technology, India in 2015 and her M.Tech. degree in Power Electronics and Electrical Drives from the National Institute of Technology Srinagar, India, in 2023. She is currently pursuing a Ph.D. degree at the National Institute of Technology Warangal, Telangana, India. Her research interests include high-gain DC–DC converters.

Giridhar A.V., Associate Professor, NIT Warangal

Giridhar A. V (Senior Member, IEEE) received the Doctorate degree from IIT Madras in 2011. He joined the National Institute of Technology, Warangal, India, in 2012, where he is currently an Associate Professor with the Department of Electrical Engineering. He is actively involved in consultancy services for NCC Limited and KPC Projects Ltd. He has completed SPARC and IMPRINT projects as a Co-PI and has published more than fifteen research articles in reputed journals and conferences. His research areas include high-voltage engineering, high-gain DC–DC converters, smart homes, and deep learning.

Narasimharaju B.L., Professor, Department of Electrical Engineering, NIT Warangal

Narasimharaju B. L (Senior Member, IEEE) was born in Gowribidhanur, Karnataka, India, on May 20, 1975. He received the Ph.D. degree from the Indian Institute of Technology Roorkee, India, in 2012. He served as a Project Trainee at ABB, Bangalore (March–August 2001), and later worked at LRDE, Ministry of Defense, India (August 2001–March 2002). He was a Teaching Assistant at UVCE (2002–2003) and subsequently a faculty member in Electrical Engineering at Manipal University (2003–2012). He is currently a Professor in the Department of Electrical Engineering at the National Institute of Technology, Warangal. He has executed funded research projects worth INR 3.5 crores, supervised nine Ph.D. scholars, and published more than 100 research papers. His research interests include power converter design, control, electric drives, and their applications in rural and urban communities.

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Published

2026-04-15

How to Cite

Boda, J., A.V., G., & B.L., N. (2026). A High Step-up Single-switch based Cubic-gain DC–DC Converter for PV Applications. IEEE Latin America Transactions, 24(6), 600–611. Retrieved from https://latamt.ieeer9.org/index.php/transactions/article/view/10416

Issue

Vol. 24 No. 6 (2026): Ordinary Issue

Section

Electric Energy