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Numerical procedures and their practical application in PV module analyses. Part 3, Parameters of atmospheric transparency : determining and correlations

Rodziewicz T., Rajfur M.

Opto-Electronics Review

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2020

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Vol. 28, No. 1

15--34

EN

The presented article examines aspects of a PV module testing using natural sunlight in outdoor conditions. The article discusses the physical sense of indexes: atmosphere purity, diffused component content, beam clear sky index. Procedures for their determination are given in relation to both instantaneous and daily values. Their close connection with the values of solar irradiance spectral distribution such as Average Photon Energy and Useful Fraction is demonstrated, as well as their usefulness in module testing in outdoor conditions. Their influence on the conversion of modules made from various absorbers and various technologies is demonstrated.

2

Numerical procedures and their practical application in PV module analyses. Part IV: atmospheric transparency parameters - application

Rodziewicz Tadeusz, Rajfur Małgorzata, Wacławek Maria

Ecological Chemistry and Engineering. S

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2020

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Vol. 27, nr 1

9--39

EN

The presented article relates to aspects of PV module testing using natural sunlight in outdoor conditions. It is a continuation of the article Part III: parameters of atmospheric transparency - determining and correlations. This article discusses the practical application of the indexes: atmosphere purity - kTm, diffused component content - ks/o, beam clear sky index - Kb - in testing various modules in outdoor conditions. Their influence on the conversion of modules made from various absorbers and various technologies is demonstrated. Their practical application in module testing in outdoor conditions is described and it - has been demonstrated that the results of the analyses carried out using the indexes conform to the results obtained using spectral parameters of solar radiation (i.e. APE and UF). These are the measurements that require the use of very expensive equipment.

3

Analysis of solar energy resources in Southern Poland for photovoltaic applications

Rodziewicz T., Teneta J., Zaremba A., Wacławek M.

Ecological Chemistry and Engineering. S

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2013

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Vol. 20, nr 1

177-198

EN

The article presents an analysis of the resources and the structure of the solar energy in the area of Southern Poland on the basis of complete meteorological data from the AGH University of Science and Technology in Krakow in 2009. An analysis attempt of its use for photovoltaic conversion using different modules with different spectral characteristics of absorbers was made. These latest methods for characterizing the structure of solar energy resources such as: distributions throughout the year: sky clearness or cloudiness indexes, the average values of photon energy (APE) and the contents of the useful fraction (UF) of the solar spectrum, are not yet widely known and used as in Poland and in other EU countries, despite the fact that most accurately determine the spectral matching factor for the chosen photovoltaic module. Due to the need for a very expensive measuring equipment, are used only by a few laboratories in the European Union, such as CREST (Centre for Renewable Energy Systems Technology) in the UK. The article presents - developed and used in the Opole University - a new low-cost method for determining of the spectrum with the use of above-mentioned indexes, including APE and UF, without buying an expensive spectroradiometer, which gives comparable results.

PL

W artykule przedstawiono analizę zasobów oraz struktury energii słonecznej obszaru Polski Południowej na podstawie pełnych danych meteorologicznych pochodzących z Akademii Górniczo-Hutniczej z Krakowa z 2009 r. Podjęto próbę dokonania analizy jego wykorzystania do celów konwersji fotowoltaicznej z wykorzystaniem różnych modułów o różnych charakterystykach spektralnych absorberów. Opisane najnowsze metody charakteryzujące strukturę zasobów energii słonecznej, takie jak rozkłady na przestrzeni całego roku: indeksów czystości nieba lub indeksów zachmurzenia, średnich wartości energii fotonów (APE) oraz zawartość użytecznych frakcji widma promieniowania słonecznego (UF), nie są jeszcze powszechnie znane i stosowane tak w Polsce, jak i w innych krajach UE, mimo że najtrafniej określają dopasowanie czynnika spektralnego do wybranego modułu fotowoltaicznego. Ze względu na konieczność posiadania bardzo drogiej aparatury pomiarowej są stosowane tylko przez nieliczne laboratoria w Unii Europejskiej, takie jak np. CREST (Centre for Renewable Energy Systems Technology) w Wielkiej Brytanii. W artykule zaprezentowano opracowaną i stosowaną w Uniwersytecie Opolskim nową i tanią metodę określania dopasowania widma z użyciem wskaźników, m.in. APE oraz UF, bez konieczności posiadania drogiego spektroradiometru, która daje porównywalne wyniki pomiarowe.