Efficiency Enhancement of Monofacial and Bifacial PV Systems Under Realistic Shading Scenarios
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Abstract
Since 1950 onwards average 2% Human Population increases for every decade and matching bridge between electricity generation and demand is a big challenge. So, one of the prominent paths is to use Renewable Energy Sources (RES) like solar, wind etc. Solar energy is regarded as one of the most dependable energy sources for meeting future energy demands, as solar photovoltaic (PV) systems directly convert solar irradiation into electricity. However, the overall performance of PV systems can be impacted by various environmental factors. Key contributors to power losses include partial shading, hotspot formation, dust accumulation, and other similar issues., these factors can lead to mismatch losses which reduce power output. To mitigate these losses, PV modules are arranged in different array configurations, and their performance can differ based on environmental influences and the design of the configuration. This study explores several array layout strategies such as Total-Cross-Tied (TCT), Magic Square (McSq), and Dominant Square (DmSq), applied to both monofacial and bifacial PV systems. In Literature, it is identified that PV array configurations with shading patterns like Healthy, Corner, Center, L-Shape, Frame and Diagonal are considered for mono-facial PV System. But, Earth rotates around the sun. Hence, there is a chance of occurrence of new shading patterns like Row-wise, Column-wise and Diagonal strip shading. And recent developments in bifacial PV modules have garnered significant attention due to their increasing affordability and enhanced output compared to traditional monofacial solar panels. The advantage of bifacial technology lies in its ability to capture additional irradiance from the rear side, a feature that monofacial panels lack. This capability allows bifacial modules to generate more power, making them an appealing option for improving the efficiency of solar energy systems. Hence, it is motivated to consider Row-wise, Column-wise and Diagonal strip shading patterns for mono-facial and Bifacial too.
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