Publications internationales
Résumé: Desert climate affects the durability of photovoltaic panels that leading to a drop in their lifetime. the following work reviews the failure modes and performance degradation of standard panels in Sahara Desert climate. The study carried out on several silicon cells after years fielded in Algeria Sahara. Visual inspection shows the influence of high temperature combined by high ultra violet. The review on failure mode and performance degradation in the paper could be used to assessing the accelerated lifetime of silicon solar cells in desert climate, in order to improve the standard photovoltaic panels performance in desert climate.
Résumé: In the paper, the main contribution is to understand the challenges related with operating silicon solar cells in Algerian Sahara, in order to improve the economical output of photovoltaic power systems. The evaluation consists the extraction of electrical parameters and visual observations. Tested PV modules have been subjected to extreme weather conditions for many years in field. Desert climate pose several challenges for the photovoltaic applications. The output power of solar cells drop up to 30 % compared to manufacturing status and physical material defects have mainly contribution in failure of polycrystalline solar cells in desert climate.
Résumé: Peak power tracking system Proteus model is proposed to design a maximum power point tracking techniques for photovoltaic systems. The simulator is good substitute to implement and verify the performance of MPPT algorithms in the laboratory. The proposed simulator has the same comportment as physical prototype. Simulated results of tracking voltage, tracking current and tracking power have been analyzed. The theoretical operation of the proposed model confirms the good performance even under solar irradiation variation.