Keynote Speaker VII

June 6, 2017 (Tue.) 10:00 – 10:40
Power Electronics in Electric Propulsion Ship Focusing on Naval Surface Ships


Prof. Seung-Ki Sul


IEEE Fellow


Seoul National University, Korea



Seung-Ki Sul (S'78, M'87, SM'98, F'00) was born in Korea, in 1958. He received the B.S., M.S., and Ph.D. degrees in electrical engineering from Seoul National University, Seoul, Korea, in 1980, 1983, and 1986, respectively. From 1986 to 1988, he was an Associate Researcher with the Department of Electrical and Computer Engineering, University of Wisconsin, Madison. From 1988 to 1990, he was a Principal Research Engineer with LG Industrial Systems Company, Korea. Since 1991, he has been a member of faculty of School of the Electrical and Computer Engineering, Seoul National University, where he is currently a Professor. He was promoted as a fellow of IEEE with the contribution to PWM technology.

Prof. Sul is one of pioneers in the area of carrier based PWM technology applied to the control of the power converters. From 2005 to 2007, he was the Vice Dean of the Engineering College of Seoul National University. In addition, from 2008 to 2011, he was the President of the Electrical Engineering Science Research Institute funded by the Korean Government. He has 130 IEEE journal papers and a total of more than 300 international conference papers in the area of power electronics. He was the program chair of IEEE PESC’06 and general chair of IEEE ECCE-Asia, ICPE, 2011. He has been actively involved in various industry projects sponsored by many Korean, Japanese, and American companies. For his sabbatical year from 2003 to 2004, he worked as an acting director of research center of Yaskawa Electric Company, Japan. From 1998 to 2003, he was a board member of Hyundae Elevator Co., which is the largest elevator maker in Korea.

From 2011 to 2014, he was a board member of LS Industrial System Co., which is the largest power electronics related product maker in Korea. He holds 14 U.S.A patents, 7 Japanese patents, 11 Korean patents, and granted 38 Ph.Ds under his supervision. For last three years, he had served as Editor-in-Chief of the Journal of Power Electronics, which is a SCIE registered journal, published by the Korean Institute of Power Electronics (KIPE), Seoul, Korea. From, 2015, he is the president of KIPE. His current research interests include power electronic control of electrical machines, electric/hybrid vehicles and ship drives, High Voltage DC transmission based on MMC, and power-converter circuits for renewal energy sources.


Recently, due to the developments of power electronics technology and environmental issues, many ships are thrusted by electric moto. Especially, most of naval vessels recently constructed have full electric propulsion system or at least hybrid propulsion system, where electric motor and engine coexist for propulsion. In this speech, the developments of modern naval vessels driven by electric propulsion motor are introduced. It can be seen that power electronics are the key enabler to this developments. AC motor driven by frequency inverter and Active Front End Rectifier have been widely applied in the field of naval vessel design for last 15 years. Also, DC grid and Battery Energy Storage System (BESS) are on the stage of application in various naval vessels. In this talk, some examples of vessels of Korean Navy will be introduced with their features in power electronics. And an electric system of next generation destroyer for Korean Navy will be discussed.