Title :
A Maximum Power Point Tracking System With Parallel Connection for PV Stand-Alone Applications
Author :
Gules, Roger ; De Pellegrin Pacheco, J. ; Hey, Hélio Leães ; Imhoff, Johninson
Author_Institution :
Fed. Univ. of Technol. CPGEI-UTFPR, Curitiba
fDate :
7/1/2008 12:00:00 AM
Abstract :
This paper presents the analysis, design, and implementation of a parallel connected maximum power point tracking (MPPT) system for stand-alone photovoltaic power generation. The parallel connection of the MPPT system reduces the negative influence of power converter losses in the overall efficiency because only a part of the generated power is processed by the MPPT system. Furthermore, all control algorithms used in the classical series-connected MPPT can be applied to the parallel system. A simple bidirectional dc-dc power converter is proposed for the MPPT implementation and presents the functions of battery charger and step-up converter. The operation characteristics of the proposed circuit are analyzed with the implementation of a prototype in a practical application.
Keywords :
DC-DC power convertors; photovoltaic power systems; DC-DC power conversion; maximum power point tracking system; photovoltaic power systems; solar energy; DC–DC power conversion; DC-DC power conversion; Photovoltaic power systems; photovoltaic (PV) power systems; solar energy;
Journal_Title :
Industrial Electronics, IEEE Transactions on
DOI :
10.1109/TIE.2008.924033