实验研究了聚光太阳电池的输出开路电压随电池与透镜间距变化规律,结果发现开路电压随间距的变化出现了峰值;理论分析证实了此峰值是由于输出开路电压随间距成高斯分布,通过拟合实验结果发现最大输出电压为光聚焦到电池耗尽区。此外,实验结合理论分析,研究了最大输出开路电压随光照度的变化关系,得出最大开路电压随光强变化成对数关系。此项研究对于当前聚焦光伏系统的设计和研究具有重要的指导意义。

The open circuit voltage changes with the distance between the lens and the solar cells in the concentrating photovoltaic system is studied through the experiment. The voltage peak appears during the distance change. It is confirmed by theoretical analysis that the peak appears due to the open circuit voltage changes with the distance into a Gaussian distribution,and maximum output voltage appears when the light focuss depletion area through fitting the experimental results. In addition,it is studied through the experimental study combined with theoretical analysis that there is logarithmic relationship between the maximum output open-circuit voltage and illumination. It is of great guidance for the current photovoltaic system design and research.