PSGEC 2026 SPEAKERS

Prof. Ci Song
(Keynote Speaker)

IEEE Fellow

Tsinghua University, China

Speech Title: Hundred-Megawatt Level Dynamic Reconfigurable Battery Energy Storage Technology

Abstract: As a core infrastructure for flexible and efficient temporal and spatial energy transfer, battery energy storage plays an irreplaceable role in the current global low-carbon energy transition revolution, with a massive application scale and rapid continuous development. However, large-scale battery energy storage systems have long faced challenges such as massive differential battery management, coordinated control, and safe operation. The essence of these challenges lies in the bucket effect brought about by fixed series-parallel battery pack structures. Innovating battery pack modes and energy management mechanisms through information-energy cross-fusion technology and innovative module technology is an important way to solve these problems. Addressing the pain points of poor efficiency, safety, economy, and compatibility of energy storage systems caused by fixed series-parallel battery packs, it is necessary to innovate an energy information processing mechanism that fundamentally eliminates the bucket effect of battery energy storage systems, clarify the coupling law of the intrinsic attributes and operating characteristics of dynamic reconfigurable battery energy storage systems, and propose an inherently safe energy control method. This report will focus on the series of key technologies such as efficient system integration, optimized operation, intelligent operation and maintenance, as well as the development of hundred-megawatt-hour dynamic reconfigurable battery energy storage system equipment and current work progress.

Biography: Ci Song is a Professor and Doctoral Supervisor of Department of Electrical Engineering of Tsinghua University, National-Level Talent, IEEE Fellow, AAIA Fellow, and Founding Director of Ministry-China Mobile Joint Laboratory on ICT-Energy Technology, Area PI of Battery Energy Storage System Integration and Control in State Key Laboratory of Power System Operation and Control, Director of the Institute of Information Energy and Green Intelligent Computing Technology at the Tsinghua-Sichuan Energy Internet Research Institute, Global Visiting Professor at Technical University of Munich. His research areas include dynamic complex system theory and its applications in ICT-energy systems. He has published over 400 academic papers and owned more than 300 patents in these areas. As the principal investigator, he has led numerous research projects, including National Key R&D Projects and National Science and Technology of China. Dr. Ci serves as an editor or guest editor for several top international journals. He first proposed the concept of "High-Power Digital Signal Processing and Computing" and created the cutting-edge interdisciplinary field of "Dynamic Reconfigurable Battery Network and High-Power Digital Energy Switch System". He acquired a series of prestigious recognitions, including the 2022 China Industry-University-Research Cooperation Innovation Individual Award, 1st Prize (Individual) of the 2023 HICOOL Global Entrepreneurship Competition, Gold Medals of the 2021 and 2023 Geneva International Invention Exhibition, Gold Medal of the 29th China National Invention Exhibition and First Prize of the 2025 Science and Technology from the China Institute of Communications. <Personal Webpage>

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Prof. Chul-Hwan Kim
(Keynote Speaker)

IEEE Fellow

Sungkyunkwan University, South Korea

Speech Title: Hybrid AC/DC Distribution Systems and Protection

Abstract: As DC power sources and DC loads are connected to the power system on a large scale, the conventional AC distribution systems are reaching their limitations. In response, medium-voltage DC (MVDC) distribution systems are emerging as an alternative for the next-generation distribution system. In Republic of Korea, the goal is to operate an AC/DC hybrid distribution system by 2030, and partially replacing existing AC distribution system with DC distribution system is being considered. With the same conductor and insulation ratings, a DC line can transmit roughly twice the power of an AC line. Medium-voltage DC (MVDC) distribution is also expected to substantially increase the hosting capacity for renewable resources, DC sources, and DC loads. Operationally, MVDC avoids frequency-related stability constraints, experiences lower voltage drop and reduced losses because reactive power is absent, enables more efficient integration of DC sources and loads through direct interconnection, and improves overall asset utilization by enabling controllable power flows via power-electronic converters.

Biography: Prof. Chul-Hwan Kim is an IEEE Fellow, KIEE Fellow and earned his B. S., M. S., and Ph. D. degrees in electrical engineering from Sungkyunkwan University, Seoul, Korea, in 1982, 1984, and 1990, respectively. In 1996, 1998, and 1999, he was a visiting academic at the University of Bath, U.K. Currently, he serves as a professor at School of Electrical and Electronics Engineering of Sungkyunkwan University, Seoul, Korea(south).

He was technical program committees co-chair of IPST(International Conference on Power System Transients) 2023 and the local program committee chair of IPST 2017. Also, he is a steering committee member of IPST. He was president of Power Engineering Society of KIEE and Korea Institute of Electrical Engineers(KIEE, 50th) in 2018 and 2021, respectively.

Furthermore, since 2008, he is a member of technical review panel of an international conference on Developments in Power System Protection (DPSP) organized by IET, U.K. Furthermore, he serves as an esteemed editorial board member for IEEE Power and Energy magazine, International Journal of Electrical Power & Energy Systems (IJEPES), and Protection and Control of Modern Power Systems. Additionally, he holds the role of editor in Electrical Power Systems Research (EPSR) at Elsevier. His research includes power system protection, transients, distributed renewable generation, and analysis and protection of MVDC, and LVDC systems. <Personal Webpage>

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Prof. Jih-Sheng (Jason) Lai
(Keynote Speaker)

IEEE Fellow

Virginia Polytechnic Institute and State University, USA

Speech Title: AI Data Center Power Architectures

Abstract: Artificial intelligence (AI) market started significant growth in recent years. Its market size is $391B in 2025, and the CAGR through 2033 exceeds 30%. As all the AI information must store, compute, and transmit through data center, the AI data center electricity demand also presents significant growth. Traditional data centers operate only at 5-15 kW per rack, while AI facilities already demand 100+ kW per rack. The power capacity of a data center that consists of hundreds of racks is also growing from traditional less than 5-MW level to now higher than 100’s MW and projecting to GW level as the AI computing power continues exploding. This presentation will provide an overview of the data center power system and its migration from low-voltage AC to 800-Vdc bus architecture. The entire data center power system consists of several critical power conversion technologies including active front-end AC-DC, intermediate DC-DC, energy storage, and point of load (POL) DC-DC. As the data center space is limited while the power demand is exponentially increased, power conversion efficiency becomes critical to avoid excessive heat generation. This presentation will discuss how to achieve ultrahigh power conversion efficiency - with an example of 99.8% for energy storage system. Looking ahead, this presentation will also introduce the advanced solid-state transformers (SSTs) and how to incorporate them into the AI center power system.

Biography: Jih-Sheng (Jason) Lai received M.S. and Ph.D. degrees in electrical engineering from the University of Tennessee, Knoxville, in 1985 and 1989. After graduated, he joined Electric Power Research Institute (EPRI) Power Electronics Applications Center as the Senior Engineer and Manager. From 1993, he worked with the Oak Ridge National Laboratory as the Power Electronics Lead Scientist. In 1996, he switched to academia and joined Virginia Tech where he is now the James S. Tucker Endowed Chair Professor and Director of Future Energy Electronics Center (FEEC). From 2015 to 2021, he was a visiting professor at Nanyang Technological University. From 2021, he became a visiting chair professor of National Yang Ming Chiao Tung University under Yushan Fellow Program. Since 2023, he has been appointed as a Fulbright Specialist by the US Fulbright Program. He published more than 530 refereed technical papers and received more than 30 U.S. patents in the area of high power electronics and their applications.

Dr. Lai is an elected Fellow of IEEE (Life), International Academy of Artificial Intelligence Science (AAIS), and National Academy of Inventors (NAI). He received numerous awards including a Technical Achievement Award in 1995-Lockheed Martin Award Night and 2016-IEEE Gerald Kliman Innovation Award. His student teams won grand prizes in 2009 TI Engibous Analog Design Competition and 2011 IEEE International Future Energy Challenge. In 2016 Google Little Box Challenge, his team won the Top 3 Finalist among 2000+ international teams. In 2020 American Made Solar Prize Competition, he led a team to win the Finalist Award. In 2024 International Contest on Net-Zero Technology, his team won the grand prize. <Personal Webpage>

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