Performance degradation of photovoltaic modules at different sites

2018 7th International Conference on Clean and Green Energy

能源学;生态环境科学

Arab, A Hadj^1 ; Mahammed, I Hadj^2 ; Amrouche, S Ould^1 ; Taghezouit, B.^1 ; Yassaa, N.^1

Centre de Développement des Energies Renouvelables, CDER, Algiers

16340, Algeria^1

Unité de Recherche Appliquée en Energies Renouvelables, URAER, Centre de Développement des Energies Renouvelables, CDER, Ghardaïa

47133, Algeria^2

关键词: Characterization tests;    Crystalline silicon PV modules;    Electrical measurement;    Electrical performance measurement;    Grid-connected photovoltaic system;    Outdoor measurements;    Performance degradation;    Photovoltaic modules;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/154/1/012005/pdf
DOI  :  10.1088/1755-1315/154/1/012005

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

In this work are presented results of electrical performance measurements of 120 crystalline silicon PV modules following long-term outdoor measurements. A set of 90 PV modules represent the first grid-connected photovoltaic (PV) system in Algeria, installed at the level of the "Centre de Développement des Energies Renouvelables" (CDER) site (Mediterranean coast), Bouzareah. The other 30 PV modules were undertaken in an arid area of the desert region of Ghardaïa site, about 600 km south of Algiers, with measurements collected from different applications. Following different characterization tests, we noticed that the all tested PV modules kept their power-generating rate except a slight reduction. Therefore, a mathematical model has been used to carry out PV module testing at different irradiance and temperature levels. Hence, different PV module parameters have been calculated from the recorded values of the open-circuit voltage, the short-circuit current, the voltage and current at maximum power point. The electrical measurements have indicated different degradations of current-voltage parameters. All the PV modules stated a decrease in the nominal power, which is variable from one module to another.