Title :
A Maximum Power Point Tracking Technique for Partially Shaded Photovoltaic Systems in Microgrids
Author :
Alajmi, Bader N. ; Ahmed, Khaled H. ; Finney, Stephen J. ; Williams, Barry W.
Author_Institution :
Dept. of Electron. & Electr. Eng., Univ. of Strathclyde, Glasgow, UK
fDate :
4/1/2013 12:00:00 AM
Abstract :
A modified fuzzy-logic controller for maximum power point (MPP) tracking is proposed to increase photovoltaic (PV) system performance during partially shaded conditions. Instead of perturbing and observing the PV system MPP, the controller scans and stores the maximum power during the perturbing and observing procedures. The controller offers accurate convergence to the global maximum operating point under different partial shadowing conditions. A mathematical model of the PV system under partial shadowing conditions is derived. To validate the proposed modified fuzzy-logic-based controller, simulation and experimentation results are provided.
Keywords :
distributed power generation; fuzzy control; mathematical analysis; maximum power point trackers; photovoltaic power systems; power distribution control; power generation control; MPPT; PV system; global maximum operation; mathematical model; maximum power point tracking technique; microgrid; modified fuzzy-logic controller; partial shadowing condition; partially shaded photovoltaic system; Arrays; Mathematical model; Meteorology; Power generation; Shadow mapping; Short circuit currents; Voltage measurement; Boost converter; fuzzy-logic controller (FLC); maximum power point (MPP) tracker (MPPT); partial shadowing; photovoltaic (PV);
Journal_Title :
Industrial Electronics, IEEE Transactions on
DOI :
10.1109/TIE.2011.2168796
