PV-modules at the facade of an inner courtyard-measurements and simulation

Author

Groehn, H.G. ; Barthels, H.

Author_Institution

Inst. of Energy Process Eng., Res. Center Julich, Germany

Volume

1

fYear

1994

fDate

5-9 Dec 1994

Firstpage

1016

Abstract

For a PV generator installed at the facade of an inner courtyard, the irradiance losses due to shadowing have to be assessed and the PV modules must be connected in such away that the energy losses accumulated during the year are minimized. Besides direct radiation losses, the buildings surrounding the courtyard also cause a permanent reduction of the view factor, i.e. the sky section from which the modules receive light, which is different for every module of the facade. The influence of the diminished view factor on diffuse radiation under different irradiance conditions is calculated and validated by measurement. Profiles of the shadow, two different PV-module connection and the influence of a different number of bypass diodes on energy conversion are investigated

Keywords

losses; photovoltaic power systems; power system analysis computing; power system measurement; semiconductor device models; semiconductor device testing; solar cell arrays; solar cells; PV module connection; PV power system; bypass diodes; diffuse radiation; direct radiation losses; energy conversion; energy losses; inner courtyard facade; irradiance losses; measurements; shadow profile; shadowing; simulation; sky section; solar cell modules; view factor; Diodes; Energy conversion; Energy loss; Libraries; Photovoltaic cells; Photovoltaic systems; Power engineering and energy; Power generation; Shadow mapping; Solar power generation;

fLanguage

English

Publisher

ieee

Conference_Titel

Photovoltaic Energy Conversion, 1994., Conference Record of the Twenty Fourth. IEEE Photovoltaic Specialists Conference - 1994, 1994 IEEE First World Conference on

Conference_Location

Waikoloa, HI

Print_ISBN

0-7803-1460-3

Type

conf

DOI

10.1109/WCPEC.1994.520133

Filename

520133