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17 September 2018 Outdoor performance of CIGS modules at multiple temperatures over three years
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Abstract
The performance and degradation rate of photovoltaic (PV) modules primarily depend on the technology type, module design and field operating conditions. The metastability is a known phenomenon in the CIGS (copper indium gallium diselenide) module technology and it depends on the light exposure and operating temperature. This work aims to understand the metastability influence on the performance of CIGS modules exposed outdoor at three different operating temperatures at a fixed insolation over three years. Two types of CIGS modules from two different manufacturers have been investigated in this study. The three different temperatures were achieved by placing three CIGS modules per manufacturer at three different airgaps on a south facing mock rooftop tilted at 20°. The airgaps were 3”, 1.5” and 0”, and the 0” airgap module was thermally insulated to obtain a higher operating temperature. Throughout the test period over three years, all the modules were maintained at maximum power point using a setup containing optimizers and power resistors. The performance characterizations were carried out before and after exposure using both outdoor natural sunlight and indoor solar simulator. The influence of superstrate type and installation height on the soiling loss have also been investigated.
Conference Presentation
© (2018) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Afshan Qamar, Rafia Akbar, Ankil Sanghvi, Andrey Bednarzhevskiy, Liyuan Liu, Akash Raj, Sai Tatapudi, David Metacarpa, Rajalakshmi Sundaramoorthy, and Govindasamy TamizhMani "Outdoor performance of CIGS modules at multiple temperatures over three years", Proc. SPIE 10759, New Concepts in Solar and Thermal Radiation Conversion and Reliability, 1075905 (17 September 2018); https://doi.org/10.1117/12.2326702
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