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Plenary Speaker

Power Converter Technologies for xEV-Current Status and Challenges
Prof. Sewan Choi
Seoul National University of Science and Technology, Korea
IEEE Fellow

Abstract: As the demand of automobiles with environmentally friendly and high fuel efficiency are increased, the development of xEVs are attracting attention from many automotive companies. An important trend in power electronic standpoint is an increase in EV battery capacity for alleviating range anxiety and increasing use of electronic systems in xEV. Due to limited space under the hood in the vehicle, the power density of power electronic components such as onboard battery chargers, inverters, high voltage DC-DC converters, and low voltage dc-dc converters is a great concern. High frequency operation using WBG devices for compact, lightweight, efficient and reliable power electronic components is a key technical challenge. This talk will present a brief overview of EV requirements, technical trends, state-of-the-art technologies, and challenges associated with high frequency operation using WBG devices focusing on onboard battery chargers and low voltage dc-dc converters.

Biography: Sewan Choi received the B.S. degree in electronic engineering from Inha University, Incheon, Korea, in 1985 and the M.S. and Ph.D. degrees in electrical engineering from Texas A&M University, College Station, TX, in 1992 and 1995, respectively. From 1985 to 1990, he was with Daewoo Heavy Industries as a Research Engineer. From 1996 to 1997, he was a Principal Research Engineer at Samsung Electro-Mechanics Co., Korea. In 1997, he joined the Department of Electrical and Information Engineering, Seoul National University of Science and Technology, Seoul, Korea, where he is currently a Professor. His research interests include power conversion technologies for renewable energy systems and energy storage systems and DC-DC converters and battery chargers for electric vehicles.

He was TPC chair of ICPE2019-IEEE ECCE Asia held in Busan, Korea. He is currently serving as Chairman of IEEE PELS Seoul section. He has served as an executive board member of Korean Institute of Power Electronics (KIPE) since 2004 and was Vice President of KIPE from 2017 to 2018. He has been serving as Associate Editor of the IEEE Transactions on Power Electronics since 2006. He was an Associate Editor of the IEEE Transactions on Industry Application and IEEE Journal on Emerging and Selected Topic in Power Electronics. He was promoted as a fellow of IEEE for the contribution to power electronic converter technologies.