PERFORMANCE ANALYSIS OF SOLAR PHOTOVOLTAIC SYSTEMS UNDER VARIABLE ENVIRONMENTAL CONDITIONS
DOI:
https://doi.org/10.69980/0taxwt78Keywords:
Solar photovoltaic system, Solar irradiance, Panel temperaturAbstract
In this study, the performance of a solar photovoltaic crystalline silicon system is evaluated under different environmental conditions. The primary aim was to study the effect of solar irradiance, ambient temperature, PV panel temperature, relative humidity, wind speed and dust condition on PV power output, PV power conversion efficiency and PV performance ratio. The outdoor operating conditions were recorded, such as the voltage, current, power output, irradiance, temperature, humidity, wind speed, and dust level. The results indicated that solar irradiance was found to be the most significant factor among the various factors studied for PV power generation. The maximum irradiance obtained was 910 W/m2, recorded at 01:00 PM and when the maximum power output was obtained at 199.12 W. The maximum conversion efficiency of the panel was however obtained at 09:00 AM when the panel temperature was low of 14.67%. The PV efficiency decreases with the excessive heating as the highest panel temperature of 58.3°C was recorded with the lowest efficiency of 13.68%. The increases in dust accumulation, relative air humidity also contributed to the loss in performance and the wind speed had a moderate cooling effect. The highest energy generation and highest performance ratio was observed during clear sky conditions as observed on a daily basis. The study concludes that to achieve the best performance of solar PV under real environmental conditions regular cleaning, appropriate ventilation, installation angle and constant monitoring are necessary.
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