期刊
ENERGY SCIENCE & ENGINEERING
卷 8, 期 3, 页码 779-788出版社
WILEY
DOI: 10.1002/ese3.550
关键词
concentrator photovoltaics; diffuse solar irradiation; direct solar irradiation; dual land use; multijunction solar cells; transparent photovoltaic module
资金
- Niigata Industrial Creation Organization (NICO)
Two types of highly transparent concentrator photovoltaic (CPV) modules that separately utilize direct sunlight and diffuse sunlight for efficient dual-land-use applications were designed and tested. The type A module, comprising a typical-scale CPV lens and solar cells, has a completely direct-diffuse-separated design for power generation and other solar applications. On the other hand, the type B module, consisting of a microscale CPV lens and solar cells, was designed to increase the amount of direct sunlight transmitted based on an intentional reduction in the ratio of the lens aperture area to the module aperture area. In experiments, both modules exhibit higher electricity yields and module-transmitted irradiances (MTIs) than those of a conventional partially transparent flat photovoltaic module with 17% efficiency Si solar cells. Furthermore, the modules show direct normal irradiance-based efficiencies of 26.7% (type A) and 18.5% (type B) while simultaneously showing MTI-to-global normal irradiance ratios of 15.3%-63.7% (type A) and 38.0%-63.8% (type B) under various irradiance conditions. Thus, an irradiance of at least 160 W/m(2) under the modules can be achieved even when they are arrayed without gaps (at a ground coverage ratio = 1).
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