Bidirectional Step-Up Multi-Input Converter with Improved Voltage Gain for DC Microgrids

Authors

Keywords:

multiport, multi-input single output, bidirectional, Converter

Abstract

High-gain converters are well-established circuit designs that find practical use in industrial and commercial settings, particularly in applications demanding high power ratings, such as Fuel Cell Electric Vehicles (FCEV) and grid-connected Renewable Energy Sources (RES). High-gain topologies from a single source pose reliability issue in RES applications due to increased device count and stress. In the event of source failure, these topologies may lead to an energy supply gap for the loads. Addressing this challenge, integrating diverse energy sources with step-up voltage capability stands as a promising solution for both DC microgrid and Electric Vehicle (EV) applications. In this study, a Dual-Input Single-Output (DISO) converter is introduced to integrate various sources and achieve an increased output voltage gain by charging the inductors in parallel and discharging them in series. Moreover, if any sources fail, the converter can supply the energy to the load from the available source and it can be operated in bidirectional mode. This paper also extensively discusses theoretical analysis, considerations related to design and circuit modeling. Furthermore, include a comparison of this converter with several other topologies. It examined to validated with a 250 W laboratory prototype.

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Author Biographies

Mudadla Dhananjaya, Anil Neerukonda Institute of Technology Sciences

M. Dhananjaya received his M. Tech. degrees in Power Electronics and Electric drives from JNTUK, Kakinada, India, in 2013 and the Ph.D. degree in power electronics from National Institute of Technology, Raipur in 2020. He also served as a Senior Project Engineer in the Department of Electrical Engineering at the Indian Institute of Technology Madras. His current research interests include high gain dc–dc converters and multiport dc–dc converters.

Devendra Potnuru, North Eastern Regional Institute of Science and Technology

P. Devendra received his Master of Engineering (M.E) from University College of Engineering, Anna University Guindy, Chennai in 2002 and Ph.D. degree in Power electronics and Drives from JNTU, Kakinada in 2016. His current research interests include high gain dc–dc converters, and control of electric machines.

Ramesh Devarapalli, INSTITUTE of CHEMICAL TECHNOLOGY

D. Ramesh received his M.Tech, in Power Systems from IIT BHU in 2012 and Ph.D. degree in Power Systems from ISM Dhanbad in 2021. His current research interests include energy management in power system.

Malleswara Rao K Durga, Gayatri Vidya Parishad College of Engineering

K. Durge Malleswara Rao received the bachelor’s degree in electrical and electronics engineering from Jawaharlal Nehru Technological University, Hyderabad, India, in 2004, and the master’s degree in power system control and automation from Jawaharlal Nehru Technological University, Kakinada, India, in 2011 and Ph.D. degree in electrical engineering with the Indian Institute of Technology Madras, Chennai, India. His research interests include development of non-linear controllers, and energy management algorithms in microgrid.

Thanikanti Sudhakar Babu, Chaitanya Bharati Institute of Technology

T. Sudhakar Babu (Senior Member, IEEE) received the M.Tech. Degree in power electronics and industrial drives from Anna University, Chennai, India, in 2011, and a Ph.D. degree from VIT University, Vellore, India, in 2017. He has completed his Postdoctoral Research fellowship from the Department of Electrical Power Engineering, Institute of Power Engineering, University Tenaga Nasional (UNITEN), Malaysia. Currently, he is working as Associate Director R & D, and Associate Professor in the Department of EEE, Chaitanya Bharati Institute of Technology, Hyderabad, India. He has published more than 250 research articles in various renowned international journals. He has received various awards like the IEI Young Engineer award, and Vice-Chancellors Research Excellence Award, and Listed among the top 2% of researchers in the world - electrical & electronics engineering, power, and energy areas, Information provided by Elsevier BV, Stanford University. He has been acting as an Editorial Board Member and a Reviewer for various reputed journals, such as the IEEE and IEEE Access, IET, Elsevier, EPCS, and Taylor and Francis.

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Published

2025-06-26

How to Cite

Dhananjaya, M., Potnuru, D., Devarapalli, R., K Durga, M. R., & Sudhakar Babu, T. (2025). Bidirectional Step-Up Multi-Input Converter with Improved Voltage Gain for DC Microgrids. IEEE Latin America Transactions, 23(8), 675–686. Retrieved from https://latamt.ieeer9.org/index.php/transactions/article/view/9579

Issue

Vol. 23 No. 8 (2025): Special Issue on Technology Megatrends

Section

Electronics