Abstract
An investigation on the impacts of dust accumulation on bifacial module and its subsequent performance as well as bifacial gain is conducted through experimental and simulation analysis in this manuscript. Literature records soiling as the most common detrimental factor to power generation, led by fluctuating levels of irradiance and high module temperature. The Soiling Loss (SL) % and Soiling Rate (SR) are determined as, through experiment conducted for one month period, 6.86 % and 0.233 at the end of the test period. This % loss is further used to simulate the annual energy yield and bifacial gain. A clean bifacial system recorded higher Performance Ratio (0.83) and lower Collection Loss L<sup>C</sup> (1.12 kWh/kW<sup>p</sup>/day) compared to lower Performance Ratio (0.78) and gleater Collection Loss L<inf>C</inf> (1.12 kWh/kW<inf>p</inf>/day) of a soiled bifacial PV system The yield of monofacial system is far lower under soiled state, and this discrepancy allows for greater Bifacial Gain (BG) (7.11 %) to be realized under soiled state of the modules. Although a bifacial module under soiled state will generate lower output by the difference in yield from a monofacial system at a greater extent than a bifacial system.
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