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Modelling the efficiency of terrestrial photovoltaic systems

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conference contribution
posted on 02.03.2011, 15:21 by Ian R. Cole, Ralph Gottschalg
A computer simulation capable of investigating the interrelationship of module packing densities and module inclination angles and their effects on overall energy yield for a given PV system installation area is presented. It is demonstrated that the simulation is a useful tool in the optimization of proposed system designs, the analysis of electrical performance and, moreover, the prediction of the occurrence of degenerative system effects such as hot-spots. In one case, it is shown that increasing the system height to module spacing ratio from 0.18 to 0.24 results in potentially severe shading effects. Results for Seville (Spain) and Loughborough (UK) are compared. The potential pros and cons of tracking systems are demonstrated, in that elevation only tracking results in an annual irradiance harvest reduction of 0.4% in Loughborough and increase of 3.4% in Seville. Varying module inclination angles shows how significant irradiance losses can occur when static PV arrays are not optimally mounted, reducing the inclination from 40 degrees to zero results in an annual irradiance harvest reduction of ~20% in Seville and ~14% in Loughborough.

History

School

  • Mechanical, Electrical and Manufacturing Engineering

Research Unit

  • Centre for Renewable Energy Systems Technology (CREST)

Citation

COLE, I.R. and GOTTSCHALG, R., 2010. Modelling the efficiency of terrestrial photovoltaic systems. IN: Hutchins, M. and Pearsall, N. (eds.). Proceedings, Photovoltaic Science, Applications and Technology (PVSAT-6). Conference C91 of the Solar Energy Society, 24th-26th March, University of Southampton, UK, pp. 165-168.

Publisher

© The Solar Energy Society

Version

AM (Accepted Manuscript)

Publication date

2010

Notes

This is a conference paper.

ISBN

0904963756

Publisher version

Language

en

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