DATE: Wednesday, October 18, 2017
TIME: 12:00 – 1:00pm
Topic: An Image-based Maximum Power Point Tracking Technique for Photovoltaic Systems
WPI, Electrical & Computer Engineering
A main source of power losses in solar Photovoltaic (PV) systems is partial shading, which occurs when the PV units of a PV system do not all receive the same irradiance. Unlike PV systems receiving the same irradiance across their PV units in which a single power peak exists in the output power curve, partially shaded PV systems may exhibit multiple power peaks. Tracking the global power peak (GPP) in partially shaded systems can be challenging because conventional maximum power point tracking (MPPT) techniques can get trapped in a local power peak and thus miss the true GPP. This seminar presents MPPT technique that is uniquely distinguishable because of its ability to eliminate these power losses. Rather than searching and scanning heuristically for the GPP, it employs a developed fast modeling tool to find the GPP deterministically, thus avoiding the need for scanning the power curve. The irradiance values, received by PV cells, required by the modeling tool are estimated innovatively using captured images of the PV modules obtained by an optical camera. Experimental verifications are conducted to validate the effectiveness of the proposed MPPT technique under various shading scenarios.
Yousef Mahmoud received the B.S. degree from Albalqa’ Applied University, Jordan and the M.Sc. degree from Masdar Institute of Science and Technology, UAE both in Electrical Power Engineering. He has joined Worcester Polytechnic Institute (WPI) as an Assistant Professor on Aug/2016 upon receiving his Ph.D. degree in Electrical and Computer Engineering from University of Waterloo, Canada.
His main research interests are mitigating the power losses in solar PV systems and improving their overall efficiency. He is also interested in modeling, analysis and design of power electronic converters and their applications in grid integration of renewable energy systems.