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Optimizacija kristalnosilicijevih fotonapetostnih modulov, poljubno orientiranih v prostoru, z upoštevanjem realističnih pogojev osvetlitve
TOMŠIČ, ŠPELA (Author), Lipovšek, Benjamin (Mentor) More about this mentor... This link opens in a new window

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Abstract
Globalna potreba po obnovljivih energetskih virih je gonilo pri načrtovanju sončnih celic s čim večjo učinkovitostjo pretvorbe zunaj laboratorijev, kjer so osvetlitveni pogoji precej drugačni od idealnih. Za izboljšavo optičnih lastnosti celic je bilo razvitih kar nekaj pristopov, ki stremijo k bolj učinkovitemu ujetju svetlobe v celicah, pri čemer med najpomembnejše pristope uvrščamo uporabo protiodbojnih plasti. Plazemsko nanešen silicijev nitrid (a-SiNx:H ali krajše SiNx) je dandanes izredno popularen protiodbojni material pri kristalnosilicijevih sončnih celicah. V laboratorijih in industriji je optimalna debelina plasti SiNx določena pri pravokotnem ali konstantnem poševnem vpadu svetlobe s standardnim AM1.5 spektrom. Takšni idealni osvetlitveni pogoji so popolnoma drugačni od realističnih, katerim so PV moduli izpostavljeni po integraciji v stavbe. Zato smo v tem delu razvili tri metode, ki so s pomočjo optičnih simulacij določile optimalno debelino plasti SiNx v strukturi kristalnosilicijeve sončne celice oz. PV modula s poljubno orientacijo v prostoru, pri čemer so bile upoštevane realistične osvetlitvene razmere preko celega leta. Obravnavani sta bili dve različni orientaciji PV modula (strešna in fasadna), katerih optimalni debelini plasti SiNx smo primerjali z optimumoma, ki sta bila pridobljena pod pravokotnim in konstantno poševnim vpadom svetlobe. Metode so bile tudi analizirane in primerjane med seboj.

Language:Slovenian
Keywords:kristalnosilicijeve sončne celice, protiodbojna plast, realistični osvetlitveni pogoji, optimalna debelina
Work type:Master's thesis/paper (mb22)
Organization:FE - Faculty of Electrical Engineering
Year:2019
Views:457
Downloads:193
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Secondary language

Language:English
Title:Optimization of crystalline silicon photovoltaic modules arbitrarily oriented in space and subjected to realistic illumination conditions
Abstract:
To meet the ever increasing global demand for abundant renewable energy, it is crucial for us to design solar cells that are as effective as possible outside laboratories, where the illumination conditions are very far from ideal. From the optical point of view, various methods of light management can be employed to achieve high performance of solar cells, among which the application of antireflective layers is of utmost importance. Plasma-deposited silicon nitride (a-SiNx:H, or briefly, SiNx) is nowadays a very popular antireflection coating for crystalline silicon solar cells. In laboratories and industry, the optimal thickness of the SiNx antireflective layer is determined under perpendicular or constant oblique illumination conditions, using a solar simulator with AM1.5 spectrum. However, when PV modules are integrated into buildings, the solar spectrum, the incident power density and the angle of incidence are constantly changing with the position of the Sun. In our contribution we developed three methods that enable complete optical simulation of arbitrarily oriented PV module exposed to realistic varying illumination conditions. Using the methods, we determined the optimal SiNx layer thicknesses for different types of building integration application of the module (roofing and curtainwalls - vertical glass). The gained optimal values were compared with the optimums gained under perpendicular or constant oblique illumination conditions. The methods were also evaluated and compared with each other.

Keywords:crystalline silicon solar cells, antireflective layer, realistic varying illumination conditions, optimal thickness

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