Studying the Performance Change of Multi Crystals Photovoltaic Panels with dust Accumulation

Abstract

The photovoltaic panels give their nominal values ​​after their installation and operation, but after a period of time, a decrease in the operational

performance is noticed, which is reflected by the value of the power provided by these panels. Therefore, it is necessary to ensure the correct performance under operation. Dust is considered one of the most important factors that lead to a decrease in the performance of photovoltaic panels, so this study is concerned with determining the effect of the accumulation of natural dust on two poly crystals photovoltaic panels from two different companies installed near each other to study whether the effect of soiling differs from one type to another. The study showed a variation in the percentage of change in the produced power of the panels due to the effect of soiling which is ranged between 16 to 18%, and how both the open circuit voltage and the short circuit current of the test samples were changed.