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    Evaluation And Analysis Of Crystalline Pv Modules Performance Characteristics Degradation In A Sub-Saharan Environment After Ten Years Of Exposure: Case Study Of Senegalese Environment

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    Date
    2017
    Author
    Sow, Salif
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    Abstract
    The effects of a sub-Saharan coastal climate on PV modules degradation was studied in this Master thesis. A Mono and a polycrystalline-silicone solar PV module exposed in Dakar, dry and coastal climate, at the extreme West of Senegal was studied. As first inspection in this region, the electrical parameters of two PV modules A and B operated during about 10 years, are measured under standard testing condition(STC) and their I-V characteristics were fitted. The initial I-V characteristics was performed under real conditions and translated to STCs and compared to the measured I-V characteristics at standard test conditions(STC) obtained in PVLAB after exposition. After the operating years, the main important parameters of the studied PV modules: short-circuit current ISC, open circuit voltage VOC, maximum power PMPP, nominal current IMPP and Voltage VMPP are evaluated and then compared to the initial parameters obtained during initial exposition to estimate their degradation. Moreover, the defects that affected the PV module are explored by visual inspection, Electroluminescence (EL) and thermography (IR) imaging methods. The results show absolute degradation of maximum power (?PMPP) nearing -5.35 % and -2.92% for the mono and polycrystalline silicon operating about 10 years. The inspection reveals many degradations in both modules. Most of the degradations due to the climate are found in the mono and a very advanced ISC mismatch is found with the IR image. The polycrystalline has many mechanical defects that’s does not too much affect the performance characteristics.
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    http://repository.pauwes-cop.net/handle/1/125
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    • Energy: Technological Development [59]

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