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首页> 外文期刊>Progress in photovoltaics >CFK: a Fresnel-Kohler concentrator with an external confinement cavity
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CFK: a Fresnel-Kohler concentrator with an external confinement cavity

机译：CFK：带有外部限制腔的Fresnel-Kohler浓缩器

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摘要

In a concentrator photovoltaic (CPV) module, the solar cell surface reflects a non-negligible portion of the incoming light, leading to a loss in module efficiency. The Fresnel-Kohler with an external confinement cavity (CFK) is a novel optical CPV concentrator designed to recover this portion of the reflected light. The design is based on an external confinement cavity, an optical element able to redirect the light reflected by the cell surface towards its surface again. Its integration into a CPV module is possible, thanks to the recent invention of advanced Kohler concentrators by LPI. This strategy, based on light recovery, leads to a significant increase in electrical efficiency. We have tested the excellent performance of these cavities by means of integrating one of them into an FK concentrator and manufacturing a proof-of-concept prototype. The measured results are outstanding: a relative electrical efficiency and I-sc gains of up to 6% when comparing both with and without cavity designs, and a 33.2% of CFK module electrical efficiency (@T-cell = 25 degrees C) using a 38.5% nominal efficiency cell (without anti-reflection coatings on the optics). Copyright (C) 2015 John Wiley & Sons, Ltd.
机译：在聚光光伏（CPV）模块中，太阳能电池表面反射入射光的不可忽略部分，从而导致模块效率降低。带有外部限制腔（CFK）的菲涅耳-科勒（Fresnel-Kohler）是一种新颖的CPV光学聚光器，旨在回收这部分反射光。该设计基于外部限制腔，该限制腔是一种光学元件，能够将细胞表面反射的光再次重定向到其表面。由于LPI最近发明了先进的科勒浓缩器，因此可以将其集成到CPV模块中。这种基于光回收的策略可显着提高电效率。我们已经通过将其中一个腔集成到FK集中器中并制造了概念验证原型来测试了这些腔的出色性能。测量结果出众：与无腔设计相比，相对电效率和I-sc增益高达6％，而CFK模块的电效率（@T电池= 25摄氏度）为33.2％。 38.5％的标称效率电池（光学元件上没有减反射膜）。版权所有（C）2015 John Wiley＆Sons，Ltd.

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