DocumentCode :
1257738
Title :
Design of photovoltaic-based current sources for maximum power transfer by means of power gyrators
Author :
Cid-Pastor, Angel ; Martinez-Salamero, Luis ; Leyva, Ramon ; Calvente, Javier ; Giral, Roberto
Author_Institution :
ETSE-URV, Tarragona, Spain
Volume :
4
Issue :
6
fYear :
2011
fDate :
7/1/2011 12:00:00 AM
Firstpage :
674
Lastpage :
682
Abstract :
The use of power gyrators as DC impedance matching circuits in photovoltaic (PV) systems is investigated. With the aim of maximum power transfer from a PV panel to a DC load, a G-gyrator is designed as a matching power interface with a time-varying adaptive conductance that guarantees the operation at the maximum power point. The adaptive nature of the gyrator conductance is given by an extremum-seeking control algorithm, which eventually results in a stable oscillation around the maximum power point regardless of the system initial conditions and atmospheric changes. A direct application of this research is the implementation of a high efficient source splitting configuration for maximum power transfer from N independent solar panels to a DC load.
Keywords :
electric admittance; gyrators; impedance matching; maximum power point trackers; photovoltaic power systems; solar cell arrays; DC impedance matching circuit; DC load; PV panel; extremum seeking control algorithm; high efficient source splitting configuration; independent solar panels; maximum power transfer; photovoltaic-based current source design; power gyrator conductance; power interface; time varying adaptive conductance;
fLanguage :
English
Journal_Title :
Power Electronics, IET
Publisher :
iet
ISSN :
1755-4535
Type :
jour
DOI :
10.1049/iet-pel.2010.0190
Filename :
5930168
Link To Document :
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