The University Lecture on “Differential Power Processing DC-DC Converters for Solar Photovoltaic Applications” will take place as follows:
Date: 02 December 2019 (Monday)
Time: 11:45am - 13:00pm
Venue: N21-G013, Lecture Hall, Research Building, University of Macau
The speaker is:
Prof. Katherine A. Kim, Associate Professor of Electrical Engineering, National Taiwan University, Taipei, Taiwan
The Lecture is:
Differential Power Processing DC-DC Converters for Solar Photovoltaic Applications
In photovoltaic (PV) systems connected to the ac power grid, PV panels are typically connected in series strings with one central converter to control and process the PV’s power. However, it is well known that imbalances or mismatch in the PV cell characteristics can result in extremely low system efficiency, which can occur due to different light incidence angles, partial shading, cell aging, etc. The concept of differential power processing (DPP) converters are utilized to enable PV power for mismatched conditions. DPP converters allow for independent MPPT of each PV panel while only processing a portion of the total PV power. DPP converter approaches in series and parallel configurations will be overviewed along with their advantages and trade-offs.
A unique research approach for emerging wearable PV applications will also be presented. This parallel DPP converter solution enables PV power for applications where non-uniform light intensities are expected. The DPP converters are implemented by utilizing a low-power SEPIC converter at 200 kHz switching frequency. Maximum power point tracking of each PV is independently achieved to use PV power to effectively charge portable electronic devices. Future applications that can benefit from this parallel DPP approach will also be discussed.
Prof. Katherine A. Kim received the B.S. degree in Electrical and Computer Engineering (ECE) from the Franklin W. Olin College of Engineering in 2007. She received the M.S. degree and Ph.D. degree in ECE from the University of Illinois at Urbana-Champaign in 2011 and 2014, respectively. She was an Assistant Professor of ECE at Ulsan National Institute of Science and Technology (UNIST), Ulsan, South Korea, from 2014-2018. Since 2019, she has been an Associate Professor of Electrical Engineering at National Taiwan University, Taipei, Taiwan. She received the NSF Graduate Research Fellowship in 2011, the UNIST Outstanding Teaching Award in 2015, and the IEEE PELS Richard M. Bass Outstanding Young Power Electronics Engineer Award in 2019. Prof. Kim leads the Power Electronics for Advanced Renewable Systems (PEARS) Laboratory and conducts research in power electronics, modeling and control, photovoltaic systems, and energy harvesting.
For more details, kindly find the event poster, abstract and bio.