Non-Isolated Coupled Inductor Based DC-DC Converter with High Voltage Conversion Ratio Recommended for Renewable Applications

Abstract

In this work, a high step-up non-isolated DC-DC converter with a coupled inductor is introduced for renewable applications. The output voltage rate of the proposed structure is efficiently excesses by choosing an appropriate turn’s ratio of the coupled inductor. The voltage lift elements are utilized to further increase the voltage gain and also leads to a decrease in the voltage spike through the switch. The produced leakage inductance energy of the coupled inductor can be retrieved which leads to a decrease in the power losses of the suggested converter. Moreover, conduction losses are decreased by utilizing only a single switch with lower ON-state resistance R_DS-ON. In order to indicate the proficiency of the recommended structure, technical analysis and the comparison survey with other studies are carried out in the literature. Finally, a laboratory scheme at a 200 V/200 W with 24 V input voltage and 95.8% efficiency is prepared to prove the effectiveness of the suggested converter.

Keywords:

• non-isolated DC-DC converter
• high voltage gain
• coupled inductor
• voltage lift elements

Additional information

Notes on contributors

Saeed Pourjafar

Saeed Pourjafar was born in May 1993 in Ardabil, Iran. He received his B. Sc. Degree in electrical engineering from Azerbaijan Shahid Madani University, Tabriz, Iran, in 2015. He also received his M. Sc at power electronics and drives from Sahand University of Technology, Faculty of Electrical and Computer Engineering, Tabriz, in 2017. He is currently Ph. D. candidate in Electrical Engineering Department, University of Mohaghegh Ardabili. His research interests include DC-DC converters, inverters, application of power electronics in energy conversion systems (wind energy, solar energy, grid-connected inverters), battery charging application in electrical vehicles.

Hossein Madadi Kojabadi

Hossein Madadi Kojabadi received the Ph.D. degree in Electrical Engineering from University of New Brunswick, Fredericton, N.B., and Canada in 2003. Since 1993, he has been a faculty member at Sahand University of Technology, Tabriz, Iran. During 2003–2004 he was Post-Doctoral Fellow at University of New Brunswick, Fredericton, N.B., Canada. He has published over 100 papers in technical journals and conference proceedings and three books. He is currently a Professor and managing director of Renewable Energy Research Center at SUT. His main research interests include renewable energy conversion, power electronic converters and variable-speed drives.

Mohammad Maalandish

Mohammad Maalandish was born in September 1990 in Marand (Yamchi), Iran. He received the B.Sc. degree in electrical engineering from Azarbaijan Shahid Madani University, Tabriz, Iran, in 2013 and the M.Sc. degree in power electronics in 2016 from Faculty of Electrical and Computer Engineering, Power Engineering Department, University of Tabriz, Tabriz, Iran, where he is currently working toward the Ph.D. degree. He is the author of more than 20 Journal and conference papers. His research interests include power conversion (DC-DC and DC-AC), designing and controlling of power electronic converters, multiinput multioutput (MIMO) converters, MPC method, leakage current elimination, and renewable energies.

Mostafa Abarzadeh

Mostafa Abarzadeh, (Ph.D., Sc.D.) is a Senior R&D Power Electronics Designer at SmartD Technologies, Montreal, Canada. His research interests include wide band gap (WBG) based high performance and high-power density power electronic converters as well as topology, modeling, control, and modulation of power electronic converters, hybrid multilevel inverters, and industrial applications of power electronic converters.

Frede Blaabjerg

Frede Blaabjerg became Full Professor of power electronics and drives in 1998. From 2017, he became a Villum investigator. He has published +600 journal papers in the fields of power electronics and its applications. He is the coauthor of four monographs and editor of 10 books in power electronics and its applications. His current research interests include power electronics and its applications such as in wind turbines, PV systems, reliability, harmonics, micro-grid and adjustable speed drives.