Shading Ratio Impact on Photovoltaic Modules and Correlation with Shading Patterns

Alonso Gutiérrez Galeano, Michael Bressan, Fernando Jiménez Vargas and Corinne Alonso
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Alonso Gutiérrez Galeano: Department of Electrical and Electronic Engineering, Universidad de los Andes, Bogotá 111711, Colombia
Michael Bressan: Department of Electrical and Electronic Engineering, Universidad de los Andes, Bogotá 111711, Colombia
Fernando Jiménez Vargas: Department of Electrical and Electronic Engineering, Universidad de los Andes, Bogotá 111711, Colombia
Corinne Alonso: Doctoral School GEET, Université Toulouse III, F-31400 Toulouse, France

Energies, 2018, vol. 11, issue 4, 1-26

Abstract: This paper presents the study of a simplified approach to model and analyze the performance of partially shaded photovoltaic modules using the shading ratio. This approach integrates the characteristics of shaded area and shadow opacity into the photovoltaic cell model. The studied methodology is intended to improve the description of shaded photovoltaic systems by specifying an experimental procedure to quantify the shadow impact. Furthermore, with the help of image processing, the analysis of the shading ratio provides a set of rules useful for predicting the current–voltage behavior and the maximum power points of shaded photovoltaic modules. This correlation of the shading ratio and shading patterns can contribute to the supervision of actual photovoltaic installations. The experimental results validate the proposed approach in monocrystalline and polycrystalline technologies of solar panels.

Keywords: partial shading; photo-generated current; photovoltaic performance; maximum power point; image processing (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2018
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (9)

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