https://orcid.org/0000-0003-3830-7422
ABSTRACT
This paper presents a comparison of prospective design concepts of DC/DC isolated converters for auxiliary drives of DC catenary fed light traction vehicles. Auxiliary drives are mostly dedicated to generate standard power grid supplying various on-board equipment and to charge on-board batteries. The DC/DC isolated converter consists of full-bridge (FB) converter feeding a high frequency transformer (HFT) and SiC diode rectifier which produces a DC voltage bus line for 3-phase voltage-source inverter. The input FB converter is in our case designed using 1200 V devices in discrete (Si IGBTs) and module (SiC JFETs) version. The comparison deals both the hard switching and soft switching topologies of the converters. The investigated design concepts are experimentally tested up to the switching frequency of 200 kHz. The main aim of this paper is to compare efficiencies of SiC JFET and Si IGBT LLC full bridge converters operated under both continuous conduction mode (CCM) and discontinuous conduction mode (DCM). The introduced theoretical results and analyses are validated by the experiments made on developed prototype 8 kW, 400 V/600 V DC/DC isolated converter using SiC JFET and Si IGBTs
Acknowledgements
This research has been supported by the Ministry of Education, Youth and Sports of the Czech Republic under the RICE – New Technologies and Concepts for Smart Industrial Systems, project No. LO1607 and by project SGS-2018-009
Disclosure statement
No potential conflict of interest was reported by the authors.
Additional information
Notes on contributors
Veera Venkata Subrahmanya Kumar Bhajana
Veera Venkata Subrahmanya Kumar Bhajana received his degrees B.E in Electronics and Communication engineering from Sapthagiri college of engineering Dharmapuri, Tamilnadu, India(University of Madras), in 2000, M.E from the P.S.N.A College of engineering and Technology, Dindigul, Tamilnadu,India under Anna University, Chennai in the year 2005 and PhD in Electrical Engineering from the Bharath University, Chennai, India in 2011. He has 11 years of teaching experience in various engineering institutes in India. He is previously associated as post-doc researcher at University of West Bohemia, Pilsen, Czech Republic during Aug 2013 to June 2015. He has collaborated with the Department of Electrical Machines and Drives, Lublin University of Technology, Lublin, Poland as a Visiting Professor. He is currently working as Associate Professor in the School of Electronics Engineering at KIIT (Kalinga Institute of Industrial Technology) University, Bhubaneswar, India since December 2011. He was currently being a reviewer for peer-reviewed journals like IEEE Transactions on Industrial Electronics, IEEE Journal of Emerging and Selected Topics in Power Electronics, IET Power Electronics, International Journal of Circuit Theory and Applications,International Transactions on Electrical Energy Systems. He has presented papers in most reputed IEEE international conferences are IECON, ISIE, ICIT, EPE-ECCE and PEDS. His key areas of interest are Power Electronics engineering, which includes soft switching DC to DC converters, AC‐AC converters, and multilevel converters
Pavel Drabek
Pavel Drabek received his M.S and PhD degrees in electrical in electrical engineering from the University of West Bohemia (UWB), Pilsen, Czech Republic, in 2000 and 2004,respectively. From 2003 to 2005, he was a Design Engineer with the company Alltronic, Ltd., Pilsen. In 2005, he joined the UWB as an Assistant Professor at the department of Electromehanics and power electronics, Faculty of electrical engineering. His main research interests include soft-switching inverters, ac-ac converters, multilevel converters and electromagnetic compatibility of power electronic converters.
Martin Jara
Martin Jára received M.S. and Ph.D. degrees in Electrical Engineering from the University of West Bohemia (UWB), Pilsen, Czech Republic, in 2002 and 2017, respectively. In 2011 he joined the Regional Innovation Centre for Electrical Engineering (RICE) as a R&D engineer. His research interests are electric drives and power converters with focus on soft switching techniques.
Zdenek Peroutka
Zdeněk Peroutka received the Master’s and Ph.D. degrees in electrical engineering from the University of West Bohemia (UWB), Pilsen, Czech Republic, in 2000 and 2004, respectively. He is a Full Professor of power electronics and drives and the Dean of the Faculty of Electrical Engineering, UWB. From October 2010 to June 2016, he was a Scientific Director and Principal Investigator of the R&D centre RICE at UWB. Since July 2016, he has been a CEO and Principal Investigator of the R&D centre RICE. He has published more than 200 papers in international journals and conference proceedings. He is the inventor of three international patents and three utility models. His main research topic is power electronics and drives for modern transport systems and power engineering.