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CURENT PhD Student Yu Yan Gives CURENT Power and Energy Seminar on Friday, March 19

Yu Yan, a PhD student at CURENT at the University of Tennessee, will present the CURENT Power and Energy Seminar (ECE 496 and 691) on Friday, March 19 from 1:00 pm to 1:50 pm. The seminar will be available via ZOOM. The ZOOM link will be sent to CURENT students and faculty through email. Contact Wendy if you need a link.

Presenter: Yu Yan, University of Tennessee

TitleZero-Voltage-Switching Analysis in Dual-Active-Bridge Converter

Abstract: Zero-Voltage-Switching (ZVS) has been widely applied in wide band gap (WBG) devices based high-switching-frequency converters, for instance, dual-active-bridge (DAB) isolated DC-DC converter, which consists of two H-bridges. To secure ZVS for all eight switches, previous literature mostly focuses on half bridge to analyze switching transitions, which, however, is rather incomplete due to ignoring impact of modulations strategies and cannot fulfill all circumstances. The whole H-bridge is used as a unit to analyze ZVS transient process, addressing the ZVS setting in different modulation strategies. The minimal initial inductor energy to complete the ZVS process is also quantified, which in return can reduce the transformer current thereby enhancing the efficiency. Furthermore, the accurate ZVS transition time is derived incorporating with the non-linearity of switch output capacitance, which can be further used to set the dead-band time.

Bio: Yu Yan received his Bachelor's degree in 2016 and his Master's degree in 2018, both in Electrical Engineering and Automation from Beijing Institute of Technology (BIT), Beijing, China. Since 2019, he has been a PhD candidate in the Department of Electrical and Computer Engineering, University of Tennessee Knoxville, His research interest includes battery chargers and PV systems.

Upcoming seminars are: 

Mar. 26 - Industry Seminar - Dr. Yue Li and Dr. Xiong Yu, Case Western Reserve University

Apr. 2 - Spring Recess - No Seminar

Apr. 9 - TBA

Apr. 16 - TBA

Apr. 23 - Industry Seminar - Rob Lefebvre, Oak Ridge National Laboratory