A new estimation method of irradiance on a partially shaded PV generator in grid-connected photovoltaic systems

M. Drif, P.J. Pérez, J. Aguilera and J.D. Aguilar

Renewable Energy, 2008, vol. 33, issue 9, 2048-2056

Abstract: A new method for estimating the irradiance on a partially shaded photovoltaic generator system is proposed. The basic principle of this method consists of two parts: firstly, an approximation of the obstacles’ outline or the local horizon by a set of linear functions. Here, a survey of the surroundings is based on the reading of the topographic coordinates of the only significant points of all the objects surrounding the photovoltaic generator. Secondly, the irradiance on the photovoltaic plane is estimated using an accurate model such as the Perez et al. model and assuming that the shading affects both the direct radiation and a part of the diffuse component (circumsolar component).

Keywords: Grid-connected PV system; Irradiance on tilted planes; Partial shading; Shading factor; Obstacles’ outline (search for similar items in EconPapers)
Date: 2008
References: View complete reference list from CitEc
Citations: View citations in EconPapers (12)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:33:y:2008:i:9:p:2048-2056

DOI: 10.1016/j.renene.2007.12.010

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