聚光系统的聚光效率和能量均匀性直接影响单位模组的发电效率。本文研究设计出高倍聚光模组系统, 该系统主要包括菲涅耳透镜和球冠平顶微棱镜。采用中心波长修正法进行菲涅耳透镜的设计, 并通过Zemax仿真模拟设计出球冠平顶微棱镜。最后通过Zemax模拟, 决定选取两侧面夹角α的角度为117°, 平顶到球面的间隔g为0.2 mm, 球冠平顶微棱镜的曲率半径R为10 mm。聚光系统整体的聚光效率达99.8%, 能量均匀度为0.812, 并进行实验验证, 得出实际聚光效率为83.1%。

The concentrating efficiency and the energy uniformity of the concentrating system directly influence the generation efficiency of the unit module. In this paper, a high power condensing module system was studied. The system included a Fresnel lens and flat spherical micro prism. The Fresnel lens was designed by central wavelength correction method and through Zemax simulation, and the design of spherical flat lens was established. Finally, through the Zemax simulation, it is decided that the angle between the two sides is selected to be 117°, the distance g between the flat top and the spherical surface is 0.2 mm, and the curvature radius R of the spherical dome microprism is 10 mm. The condensing system as a whole has a condensing efficiency of 99.8% and an energy uniformity of 0.812. Experimental results show that the actual condensing efficiency is 83.1%.