Comparative study of performance degradation in poly- and mono-crystalline-Si solar PV modules deployed in different applications |
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| Authors: | David A. Quansah Muyiwa S. Adaramola |
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| Affiliation: | 1. Renewable Energy Group, Faculty of Environmental Sciences and Natural Resource Management, Norwegian University of Life Sciences (NMBU), 1433 Ås, Norway;2. Department of Mechanical Engineering, Kwame Nkrumah University of Science and Technology (KNUST), Kumasi, Ghana;3. The Brew-Hammond Energy Centre, Kwame Nkrumah University of Science and Technology (KNUST), Kumasi, Ghana |
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| Abstract: | Data on long-term performance and degradation of field-aged solar photovoltaic modules is widely recognized as necessary for continued technological improvement and market confidence. It is also important that such research should cover various geographical regions of the globe. This paper presents a study on twenty-nine (29) crystalline silicon modules deployed in grid-connected, battery-charging and water-pumping applications. The modules, installed at six different locations in Ghana were aged between 6 and 32 years. Peak power (Pmax) losses ranged from 0.8%/year – 6.5%/year. The Pmax losses were dominated by losses in fill factor (FF) and short-circuit current (Isc). Visually observable defects are also reported. |
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| Keywords: | Solar module degradation Field performance Ghana Fill factor Crystalline silicon Defects |
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