Shvarts M Z, Malevskiy D A, Nakhimovich M V, Pokrovskiy P V, Sadchikov N A, Soluyanov A A
Opt Lett. 2023 Jan 1;48(1):93-96. doi: 10.1364/OL.475800.
A combined module that combines a concentrator with planar photovoltaic circuits provides energy conversion of both parts of global terrestrial radiation: direct sunlight by concentrator solar cells and scattered (diffuse) sunlight by planar (non-concentrator) photoconverters. The decrease in Fresnel lens concentrating ability is usually associated with imperfections in the optical refractive surfaces, where some part of the direct light, which arrives normal to the surface of the Fresnel lens and is intended to be concentrated, becomes scattered and directed off the highly efficient concentrator solar cell. The diffuse light flux propagates inside the volume of the combined photovoltaic module. This flux undergoes multiple reflections from the structural elements, is partially absorbed, and ultimately reaches the photoconverters of the planar circuit. Thus, two types of diffuse light impinge the planar circuit: "external" from the atmosphere and "internal" produced by the Fresnel lens from direct light. This Letter proposes a method for determining the diffuse properties of sunlight concentrators such as Fresnel lens.
一种将聚光器与平面光伏电路相结合的组合模块，可对全球地面辐射的两个部分进行能量转换：通过聚光太阳能电池转换直射阳光，通过平面（非聚光）光电转换器转换散射（漫射）阳光。菲涅耳透镜聚光能力的下降通常与光学折射表面的缺陷有关，在该表面，一些垂直到达菲涅耳透镜表面并打算被聚光的直射光的一部分会散射并偏离高效聚光太阳能电池。漫射光通量在组合光伏模块的体积内传播。该通量从结构元件进行多次反射，被部分吸收，并最终到达平面电路的光电转换器。因此，有两种类型的漫射光照射到平面电路上：来自大气的“外部”漫射光和由菲涅耳透镜从直射光产生的“内部”漫射光。本文提出了一种确定诸如菲涅耳透镜等阳光聚光器漫射特性的方法。
