Effect of dust and shadow on the efficiency of photovoltaic solar module at Baghdad climate conditions

الملخص EN

The performance of a solar cell under sun radiation is necessary to describe the electrical parameters of the cell.

The Prova 200 solar panel analyzer is used for to test a solar cell at Baghdad climate conditions (the experimental measurements had been made at weather temperature in the range between 20-28PoPC and average wind speed 2.5 km / hr).

The results showed that as dust accumulated the solar panel loose power for the first three days, but when the dust had created several layers the power dropped in smaller intervals for the forth days to two weeks.

More power and efficiency lose for more exposure days and tilt angle 0PoP ≥ 30Po P ≥ 60Po P ≥ 90Po P (The results show that modules tilted with larger angles let less dust get accumulated on surfaces) at a fixed time (exposure days) for the fourth angles respectively.

Sharp reduction of energy (power) is yield up to 63.2-99.8 % of PV (photovoltaic) solar cell under 5Ω resistance load was observed as a result of corresponding shaded percentage area of the cells 5.6-50 % from the total cell area.