In this paper, the influence of relative humidity and mass concentration of haze on irradiance and output power of photovoltaic modules is studied by mathematical modeling, and the influence law is verified by experiments. The experimental results show that the relative humidity of fog increases from 23% to 90%, the irradiance decreases by 52.17%, and the output power of photovoltaic module decreases by 46.5%. When RH (relative humidity) is more than 65%, the irradiance and power dedine are.When the haze mass concentration increases from 18 μg/m3 to 517 μg/m3,when RH=30%,50%,60%,75%,80% and 90%, the irradiance decreases by 16%,25%,40%,74.4%,73.1% and 68.6%, respectively. The output power of photovoltaic modules decreases by 21.8%, 22.5%, 35%, 69.9%, 70.1% and 67.7%, respectively. When the haze concentration is 108, 189, 312, 405 μg/m3 and 497 μg/m3, RH increases from 30% to 90%, the irradiance decreases by 60%, 78.8%, 80%, 85.1% and 85.8%, respectively. The output power of photovoltaic modules decreased by 47.4%, 73.3%, 78.1%, 82.5% and 84.9%, respectively. The irradiance and output power decrease gradually with the increase of RH. The effects of relative humidity and haze concentration on irradiance are numerically simulated. The simulation results are basically consistent with the experimental results. The minimum error between simulation and experiment is 0.1%, and the maximum error is 10.7%.
Key words
photovoltaic modules /
haze /
output characteristic /
relative humidity /
haze mass concentration
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