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

Volume

60

Issue

4

fYear

2013

fDate

4/1/2013 12:00:00 AM

Firstpage

1596

Lastpage

1606

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);

fLanguage

English

Journal_Title

Industrial Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0278-0046

Type

jour

DOI

10.1109/TIE.2011.2168796

Filename

6022785