户外实证光伏组件能效影响因素分析

Analysis of Factors Affecting Energy Efficiency of Outdoor Demonstration Photovoltaic Modules

结合组件在甘肃武威户外实证平台(属于寒温气候区)的实测发电数据,依据组件发电能效模型对被测组件发电能效进行计算,通过对不同环境条件下组件能效计算结果的分析,对组件温度及环境总辐照度对于光伏组件发电能效的影响进行了研究。研究结果表明,随着组件温度的上升组件能效呈现明显下降趋势,随着辐照度的增大组件能效呈现明显上升趋势;而在户外条件下,组件温度对于组件能效的影响明显大于辐照对于组件能效的影响。

Based on the measured power generation data of the modules at the outdoor demonstration platform in Wuwei,Gansu Province(which belongs to the cold and warm climate zone),the power efficiency of the measured modules is calculated according to the module power efficiency model.The influence of module temperature and total environmental irradiance on energy efficiency of photovoltaic modules is studied by analyzing the calculation results of energy efficiency of photovoltaic modules under different environmental conditions.The results show that the energy efficiency of the modules decreases significantly with the increase of the module temperature,and increases significantly with the increase of the irradiance.However,in outdoor conditions,the influence of module temperature on component module energy efficiency is significantly greater than that of irradiation.