Tutorial presentations will be held on Monday June 25

Dushan Boroyevich, Rolando Burgos, Igor Cvetkovic, Bo Wen
Bradley Department of Electrical and Computer Engineering
Center for Power Electronics Systems (CPES) – Virginia Tech

Modeling and Control of Three-Phase AC High-Power
High-Frequency Converters
(click here to download)

Three-phase pulse-width-modulated (PWM) converters evolved in conjunction with ac motor drives, and their modeling and control has been for a long time considered an integral part of the motor drive control. However, these converters are now being widely used in many other applications, from uninterruptible power supplies (UPS), active front-end rectifiers (power factor correction), active filters, static var compensators (STATCOM), unified power flow controllers (UPFC), high-voltage dc (HVDC) transmission and distribution stations, and other grid-connected applications, such as wind and solar power generation. In many of these applications, the converters have to be controlled in the presence of unknown or widely varying and often nonlinear dynamic loads and/or sources. For high-power applications, there is also greatly increased interest in multi-level converters and converter paralleling.

The tutorial will present an overview of the unified geometric approach to modeling, modulation, and control of the three-phase high-frequency converters. Operation principles and modulation strategies of the most common topologies in typical applications will be reviewed. Converter switching, average, and multivariable small-signal models will be developed in a consistent framework, and their use for the closed-loop control design will be illustrated. Several recent advancements in the control of multi-level, modular, and parallel converters will be presented, as well as their control in grid-forming applications.





Dushan Boroyevich received his Dipl. Ing. degree from the University of Belgrade in 1976 and his M.S. degree from the University of Novi Sad in 1982, in what then used to be Yugoslavia. He received his Ph.D. degree in 1986 from Virginia Polytechnic Institute and State University (Virginia Tech), Blacksburg, USA. From 1986 to 1990, he was an assistant professor and director of the Power and Industrial Electronics Research Program in the Institute for Power and Electronic Engineering at the University of Novi Sad. He then joined the Bradley Department of Electrical and Computer Engineering at Virginia Tech as associate professor. He is now University Distinguished Professor and Associate Vice President for Research and Innovation in Energy Systems at Virginia Tech, and Director of the Center for Power Electronics Systems.
Dr. Boroyevich has led numerous research projects in the areas of multi-phase power conversion, electronic power distribution systems, modeling and control, and multi-disciplinary design optimization. He has advised over 40 Ph.D. and 40 M.S. students to graduation and has co-authored with them over 700 papers.
Dushan was the president of the IEEE Power Electronics Society (PELS) for 2011-12. He is a Fellow of IEEE and recipient of numerous awards, including the IEEE William E. Newell Power Electronics Technical Field Award, the IEEE PELS Harry A. Owen Distinguished Service Award, European Power Electronics Association (EPE) Outstanding Achievement Award, and the Award for Outstanding Achievements and Service to Profession by the European Power Electronics and Motion Control Council. He is an Honorary Professor at the Xi’an Jiaotong University in Xi’an, China, and received the K.T. Li Chair Professor Award at the National Cheng Kung University, in Tainan, Taiwan. Dushan was elected to the US National Academy of Engineering in 2014 for advancements in control, modeling, and design of electronic power conversion for electric energy and transportation.






Rolando Burgos received the B.S. in Electronics Engineering, the Electronics Engineering Professional Degree, and the M.S. and Ph.D. degrees in Electrical Engineering from the University of Concepción, Chile, in 1995, 1997, 1999, and 2002 respectively. In 2002 he joined, as Postdoctoral Fellow, the Center for Power Electronics Systems (CPES) at Virginia Tech, in Blacksburg, VA, becoming Research Assistant Professor in 2003. From 2009 to 2012 he was with ABB Corporate Research in Raleigh, NC, as Principal Scientist. In 2010 he was appointed Adjunct Associate Professor in the Electrical and Computer Engineering Department at North Carolina State University, working ad honorem at the Future Renewable Electric Energy Delivery and Management (FREEDM) Systems Center. In 2012 he returned to Virginia Tech where he is currently associate professor in The Bradley Department of Electrical and Computer Engineering and CPES faculty.
His research interests include wide-bandgap semiconductor based power conversion, electromagnetic interference (EMI) and electromagnetic compatibility (EMC), multi-phase multi-level power converters, grid power electronics systems, stability of ac and dc power systems, and modeling and control of power electronics converters and systems.
Dr. Burgos is Member of the IEEE Power Electronics Society where he currently serves as Chair of the Power and Control Core Technologies Committee, and as Associate Editor of the IEEE Transactions on Power Electronics, IEEE Power Electronics Letters, and the IEEE Journal of Emerging and Selected Topics in Power Electronics. He is a member as well of the IEEE Industry Applications Society, the IEEE Industrial Electronics Society, and the IEEE Power and Energy Society.





Igor Cvetkovic received his Dipl. Ing. Degree from the University of Belgrade, Serbia in 2004 (area - Power Systems). After working several years for the Electric Power Industry of Serbia as an Engineer for Regulation and Maintenance of Power Electronics Equipment at the Nikola Tesla Power Plant, Igor joined Center for Power Electronics Systems (CPES) at Virginia Tech in Blacksburg, USA in 2007 as a visiting scholar. Year later, he started Direct Ph.D. program at Virginia Tech, and completed his M.S. degree in Power Electronics in 2010. The same year he started working full-time as a research engineer at CPES while in parallel pursuing his doctorate part-time. He received his Ph.D. degree in 2017 and is now working as a Research Scientist and a Technical Director at CPES. Igor is a member of IEEE, and his research interests include ac- and dc- electronic power distribution systems design and stability, as well as power electronics-based system-level modeling and control.