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Power Electronics for Electric Vehicle Battery Charging

Date: 10/09/2024
Time: 9:00 am
Presenter: Thiago Batista Soeiro
Abstract: This lecture covers key aspects and trends in electric vehicle (EV) battery charging, focusing on requirements, state-of-the-art, and new developments in power electronics technologies. Starting from low-to-medium power EV chargers, two-stage conversion systems are common, including a Power Factor Corrector (PFC) rectifier followed by a DC-DC converter. These chargers can be integrated into vehicles (on-board) or located at EV charging stations (off-board), with galvanic isolation for safety. Fast DC chargers, primarily unidirectional (grid to-vehicle), prioritize quick recharging times but need to consider grid capacity with the rise of high-power chargers near cities.

Future charging infrastructures will cater to higher power demands, especially for heavy-duty electric vehicles, necessitating new investments. Innovations such as direct MV AC grid connections and the use of multilevel cascaded H-bridge circuits with medium frequency transformers will be crucial. Public battery chargers will benefit from multiport, flexible, and intelligent designs using multiplexing techniques to optimize power utilization. These systems should also incorporate energy storage to manage power demand, reduce costs, and participate in ancillary service markets, enhancing profitability. Wireless power EV chargers require further R&D for efficient circuit solutions, safety measures, and power quality management. Addressing these topics, such as foreign object detection and optimal transformer coil design, remains crucial for developing high-power wireless chargers and overcoming associated challenges.

Please note: This webinar will be held in Portuguese.
Prof. Thiago Batista Soeiro received the M.Sc. degree in electrical engineering from the Federal University of Santa Catarina, Florianopolis, Brazil, in 2007, and the Ph.D. degree from the Swiss Federal Institute of Technology, Zurich, Switzerland, in 2012. From 2012 to 2013, he was a Researcher at the Power Electronics Institute, Federal University of Santa Catarina. From October 2013 to April 2018, he worked at the Corporate Research Centre, ABB Switzerland Ltd., Baden-Dattwil, Switzerland, where he was a Senior Scientist. From May 2018 to January 2022, he worked at the DC Systems, Energy Conversion and Storage Group, Delft University of Technology, Delft, The Netherlands, where he was an Associate Professor. From January to October 2022, he worked at the Power Management and Distribution Section (TEC-EPM) for the European Space Research and Technology Centre, Noordwijk, the Netherlands. Since October 2022 he became a full professor and head of the Power Electronics and EMC group of the University of Twente, Enschede, The Netherlands. His research interests include advanced high power converters and DC system integration. Prof. Dr. Soeiro was a recipient of the 2013 IEEE Industrial Electronics Society Best Conference Paper Award and the Best Paper Awards in the following IEEE conferences: International Conference on Power Electronics (ECCE Asia 2011), the International Conference on Industrial Technology (ICIT 2013), the Conference on Power Electronics and Applications EPE’15 (ECCE Europe 2015), and the International Conference on Power Electronics and Motion Control 2020 and 2022 (PEMC 2020 and 2022).