A Procedure for Modeling Photovoltaic Arrays under Any Configuration and Shading Conditions

Photovoltaic (PV) arrays can be connected following regular or irregular connection patterns to form regular configurations (e.g., series-parallel, total cross-tied, bridge-linked, etc.) or irregular configurations, respectively. Several reported works propose models for a single configuration; henc...

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Bibliographic Details
Published in:Energies (Basel) 2018-04, Vol.11 (4), p.767
Main Authors: Gonzalez Montoya, Daniel, Bastidas-Rodriguez, Juan, Trejos-Grisales, Luz, Ramos-Paja, Carlos, Petrone, Giovanni, Spagnuolo, Giovanni
Format: Article
Language:English
Subjects:
Arrays
Computer simulation
Configurations
Electric bridges
irregular configuration
Mathematical models
modeling
Modelling
Nonlinear equations
partial shading
Photovoltaics
PV array
Shading
Solar cells
Topology
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Summary:Photovoltaic (PV) arrays can be connected following regular or irregular connection patterns to form regular configurations (e.g., series-parallel, total cross-tied, bridge-linked, etc.) or irregular configurations, respectively. Several reported works propose models for a single configuration; hence, making the evaluation of arrays with different configuration is a considerable time-consuming task. Moreover, if the PV array adopts an irregular configuration, the classical models cannot be used for its analysis. This paper proposes a modeling procedure for PV arrays connected in any configuration and operating under uniform or partial shading conditions. The procedure divides the array into smaller arrays, named sub-arrays, which can be independently solved. The modeling procedure selects the mesh current solution or the node voltage solution depending on the topology of each sub-array. Therefore, the proposed approach analyzes the PV array using the least number of nonlinear equations. The proposed solution is validated through simulation and experimental results, which demonstrate the proposed model capacity to reproduce the electrical behavior of PV arrays connected in any configuration.
ISSN:1996-1073
1996-1073
DOI:10.3390/en11040767