ECE: Electrical & Computer Engineering
ECE News

CESCA Seminar Talk: “Control system design in power electronics converters”

2:30 PM - 3:45 AM on Friday, April 25, 2014
Location: Lavery Hall 320

by Dr. Rolando Burgos and Dr. Zhiyu Shen (CPES)


Control of power electronics converters varies from analog circuit in simple DC/DC converters to full digital implementations in more complicated systems. At higher power level, the power electronics converters are normally large, expensive, spatially distributed systems. The presentation focuses on a hierarchical control system architecture suitable for high power converters from hundreds of kW to
thousands of MW is introduced. The partition of different layers use temporal distribution along with functional distribution as key driving criteria. However, other common restrictions such as spatial distribution and requirement of different technologies usually lead to similar partition result. The signal flow and the behavior of each
layer is explained. At last, a few implementation examples of such architecture are given.


Dr. Rolando Burgos

Rolando Burgos was born in Concepcion, Chile, where he attended the University of Concepcion, earning his B.S. in Electronics Engineering in 1995 and a Professional Engineering Certificate in Electronics Engineering in 1997, graduating with honors. At the same institution he later earned his M.S. and Ph.D. degrees in Electrical Engineering
in 1999 and 2002 respectively.

In 2002 he joined the Center for Power Electronics Systems (CPES) at Virginia Polytechnic Institute and State University (Virginia Tech), in Blacksburg, VA, as Postdoctoral Fellow, where he became Research Scientist in 2003, and Research Assistant Professor in 2005. During
this period he was primarily involved in the development and synthesis of high power density power electronics converters and distribution systems, co-advising several Ph.D. and Master students at CPES.

In 2009 he became a Scientist with ABB Corporate Research, in Raleigh, NC, becoming Principal Scientist in 2010. This same year he was appointed Adjunct Associate Professor in the Electrical and Computer Engineering Department at North Carolina State University (NCSU).
While at ABB, he was involved in the development of multi-level converter platforms for medium voltage industrial and grid applications.

In 2012 Dr. Burgos returned to The Bradley Department of Electrical and Computer Engineering at Virginia Tech, where he is currently associate professor. His research interests include multi-phase multi-level modular power conversion, grid power electronics applications, high power density power converters, the stability of ac and dc power electronics systems, hierarchical modeling, and control
theory and applications. He has co-directed and participated in more than 30 sponsored research projects in this area, and co-authored over 160 peer-reviewed technical publications. He has received three prize paper awards.

Dr. Burgos is a Member of the IEEE and Power Electronics Society, where he currently serves as associate editor of the Transactions on Power Electronics, associate editor of the Power Electronics Letters, and as secretary of the Committee on Modeling, Control and Simulation.

Dr. Zhiyu Shen

Zhiyu Shen received the B.S and M.S degrees in electrical engineering from Tsinghua University, Beijing, China, in 2004 and 2007, respectively, and Ph. D. degree from Virginia Tech in 2013. He now works as a research scientist in Center of Power Electronics Systems.

His research interests include three-phase AC system impedance measurement, three-phase AC system small signal stability analysis, high-frequency high-density converter design.