Goss SolarEnergy 2014 Irradiance modelling for individual cells of shaded solar pv arrays.pdf (3.29 MB)
Irradiance modelling for individual cells of shaded solar photovoltaic arrays
journal contribution
posted on 2014-10-29, 13:33 authored by Brian Goss, Ian Cole, Tom BettsTom Betts, Ralph GottschalgDevelopments in Photovoltaic (PV) design software have progressed to modelling the string or even the module as the smallest system unit but current methods lack computational efficiency to fully consider cell mismatch effects due to partial shading. This paper presents a more efficient shading loss algorithm which generates an irradiance map of the array for each time step for individual cells or cell portions. Irradiance losses are calculated from both near and far obstructions which might cause shading of both beam and diffuse irradiance in a three-dimensional reference field. The irradiance map output from this model could be used to calculate the performance of each solar cell individually as part of an overarching energy yield model. A validation demonstrates the calculation of shading losses due to a chimney with less than one percent error when compared with measured values.
Funding
This work has been supported by a joint UK-India initiative in solar energy through a joint project ‘Stability and Performance of Photovoltaics (STAPP)’ funded by Research Councils UK (RCUK) Energy Programme in UK [grant number: EP/H040331/1] and by Department of Science and Technology (DST) in India.
History
School
- Mechanical, Electrical and Manufacturing Engineering
Research Unit
- Centre for Renewable Energy Systems Technology (CREST)
Published in
Solar EnergyVolume
110Pages
410 - 419Citation
GOSS, B. ... et al., 2014. Irradiance modelling for individual cells of shaded solar photovoltaic arrays. Solar Energy, 110, December 2014, pp. 410 - 419.Publisher
© The Authors. Published by Elsevier Ltd.Version
- VoR (Version of Record)
Publisher statement
This work is made available according to the conditions of the Creative Commons Attribution 3.0 Unported (CC BY 3.0) licence. Full details of this licence are available at: http://creativecommons.org/licenses/by/3.0/Acceptance date
2014-09-26Publication date
2014-10-15Notes
This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/3.0/).ISSN
0038-092XPublisher version
Language
- en
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