Speaker: Professor Yuan Li, Sichuan University, China & Northeastern University, Boston
Host: Professor Brad Lehman
Invented in 2002, the impedance source (Z-Source) inverter provides buck-boost functionality by utilizing a single switching stage and improves reliability with its inherent short-circuit immunity. With these advantages, Z-Source inverter technology is quickly becoming one of the hottest fields for new research. The Z-Source technology can be used with all four basic converter types: DC-AC, DC-DC, AC-AC, and AC-DC. Z-Source Inverters can be applied to a broad research area: from modern energy generation systems (renewable and alternative) to DC circuit breakers and electronic loads. In this seminar, Dr. Li will introduce the basic concept and design of Z-Source inverters and discuss new research developments in converting Z-Source inverters for use in solar power. In addition, the seminar will address the challenges of applying the technology to PV power generation, along with: 1) the pulse-width modulation for Z-Source converter; 2) the control strategy with maximum power point tracking; 3) the approaches to increase voltage boost ratio; and 4) the challenges for single phase Z-Source inverter.
Dr. Yuan Li is currently a Visiting Professor in the Department of Electrical & Computer Engineering at Northeastern University. She is also an Associate Professor with the Department of Electrical Engineering and Information, Sichuan University, China. She received her PhD degree in 2009 from Wuhan University, China. During 2007 to 2009, she was a visiting scholar with Michigan State University in an education exchange program. She is the PI of the research program "Serial Cascaded Multi-level Photovoltaic Inverter Using Quasi-Z-Source Converter," sponsored by the Chinese National Funding of Science for Young Scholars. She is currently a guest co-editor of the IEEE Transactions on Power Electronics Special Issue "Impedance Source Converter Topologies and Applications." Professor Li is the author or co-author of more than 15 IEEE Transaction or conference papers. Her research interests include the impedance source converter, photovoltaic power generation, grid-connected inverter, AC/DC microgrids, and other related topics.
This seminar will be followed by an NU Power Students' social with food and fun from 6 pm - 8 pm.