A Parametric Study of the Packaging of Concentrator Photovoltaic Modules

Recently, solar cell conversion efficiency has improved significantly. However, due to errors occurring during the manufacturing or packaging process, the theoretical conversion efficiency limit for these high-efficiency solar cells cannot be practically achieved. The effects of the following packaging parameters on power generation efficiency are investigated, including cycles for the Fresnel lenses, misalignment of the center axis, radius (R) of the groove in the Fresnel lenses, tilting angle, the tempered glass used for the secondary condenser optical collector, and if the secondary condenser optical collecting cup is used. It is observed that the misalignment of the center axis and tilting angles of the second optical collector has the greatest effects on the illumination power density (W/mm(2)) and power generation. If a secondary condenser optical collector is used with an incident angle of 1 degrees, the light-focusing efficiency increases from 50% to 67%. This has a significant influence on the power generation efficiency.