Title :
Efficiency Evaluation in Grid Connected Photovoltaic Energy Conversion Systems
Author :
Cavalcanti, M.C. ; Azevedo, G.M.S. ; Amaral, B.A. ; de Oliveira, K.C. ; Neves, F.A.S. ; Lins, Z.D.
Author_Institution :
Dept. of Electr. Eng. & Power Syst., Universidade Federal de Pernambuco, Recife
Abstract :
This paper introduces a comparative study of efficiency for topologies in photovoltaic energy conversion systems. In special, a study of losses is presented and the methodology is used to compare different topologies for grid connected photovoltaic systems in such a way that can be chosen the option of best efficiency. The systems are also tested with photovoltaic generation as well as current harmonic and reactive power compensation simultaneously. The system that uses only inverters presents increased efficiency when compared to the conventional system. The synchronous reference frame method is used to control the three-phase inverter for all topologies. The proposed design is used to test efficiency for different pulse-width-modulation techniques and different loads in an electric system and simulation results demonstrate the good performance of the proposed configuration
Keywords :
PWM invertors; harmonic analysis; network topology; photovoltaic power systems; power convertors; power grids; power system interconnection; reactive power; grid connection; harmonic compensation; photovoltaic energy conversion systems; pulse-width-modulation techniques; reactive power compensation; synchronous reference frame method; three-phase inverter control; DC-DC power converters; Energy conversion; Photovoltaic systems; Power system harmonics; Pulse width modulation inverters; Reactive power; Solar power generation; System testing; Topology; Voltage control;
Conference_Titel :
Power Electronics Specialists Conference, 2005. PESC '05. IEEE 36th
Conference_Location :
Recife
Print_ISBN :
0-7803-9033-4
DOI :
10.1109/PESC.2005.1581635
