Title :
Maximum power point tracking by means of parallel connection of power semigyrators
Author :
Cabal, C. ; Cid-Pastor, A. ; Seguier, L. ; Estibals, B. ; Alonso, C.
Author_Institution :
LAAS-CNRS, Univ. of Toulouse, Toulouse
fDate :
June 30 2008-July 2 2008
Abstract :
In this paper, the parallel connection of two power semigyrators of type G with controlled input current is used as an adaptation stage to improve the efficiency and reliability of a photovoltaic power conversion chain. A current sharing control has been incorporated in the system for guarantee the uniform distribution of the total peak power among the dc-dc converters. We use a democratic current sharing policy that also performs the impedance matching of the PV array. Simulation and experimental results show that the proposed system is suitable to perform the parallel connection of two power converters with gyrators characteristics preserving the Maximum Power Point Tracking of the PV array.
Keywords :
DC-DC power convertors; electric current control; gyrators; impedance matching; photovoltaic power systems; PV array; current sharing control; dc-dc converters; democratic current sharing policy; impedance matching; maximum power point tracking; parallel connection; photovoltaic power conversion chain; power converters; power semigyrators; Current distribution; DC-DC power converters; Fault tolerance; Gyrators; Impedance matching; Photovoltaic systems; Solar power generation; Stress; Switching converters; Voltage;
Conference_Titel :
Industrial Electronics, 2008. ISIE 2008. IEEE International Symposium on
Conference_Location :
Cambridge
Print_ISBN :
978-1-4244-1665-3
Electronic_ISBN :
978-1-4244-1666-0
DOI :
10.1109/ISIE.2008.4677188