Presenters: Hao Feng and Dakai Wang, NC State University & FREEDM Systems Center PhD Candidates and Srdjan Lukic, PhD, Associate Professor NC State University & FREEDM Systems Center Deputy Director

The US DOE Vehicle Technologies Office has a goal of recharging electric vehicles in under 15 minutes. This requires research in battery chemistry and in extreme fast charging systems rated at hundreds of kilowatts. They selected NC State and FREEDM to lead a team including ABB and New York Power Authority to design and build a 1 Megawatt station with multiple charging ports. Our design uses concepts from years of research on solid state transformers (SSTs) connected directly to medium voltage (up to 15 kV) utility distribution grids. SSTs at these voltages promise increased efficiency, power density, and operational flexibility. This technical webinar will introduce the architecture and system level control of the SST as well as details on AC/DC conversion and DC/DC stages.

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