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Energies 2016, 9(12), 1019; doi:10.3390/en9121019

Assessment of the Usability and Accuracy of the Simplified One-Diode Models for Photovoltaic Modules

DEIM Dipartimento di Energia, Ingegneria dell’Informazione e Modelli Matematici, Università degli Studi di Palermo, Viale delle Scienze Edificio 9, 90128 Palermo, Italy
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Academic Editors: Senthilarasu Sundaram and Tapas Mallick
Received: 17 October 2016 / Revised: 15 November 2016 / Accepted: 25 November 2016 / Published: 6 December 2016
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Abstract

Models for photovoltaic (PV) cells and panels, based on the diode equivalent circuit, have been widely used because they are effective tools for system design. Many authors have presented simplified one-diode models whose three or four parameters are calculated using the data extracted from the datasheets issued by PV panel manufactures and adopting some simplifying hypotheses and numerical solving techniques. Sometimes it may be difficult to make a choice among so many models. To help researchers and designers working in the area of photovoltaic systems in selecting the model that is fit for purpose, a criterion for rating both the usability and accuracy of simplified one-diode models is proposed in this paper. The paper minutely describes the adopted hypotheses, analytical procedures and operative steps to calculate the parameters of the most famous simplified one-diode equivalent circuits. To test the achievable accuracy of the models, a comparison between the characteristics of some commercial PV modules issued by PV panel manufacturers and the calculated current-voltage (I-V) curves, at constant solar irradiance and/or cell temperature, is carried out. The study shows that, even if different usability ratings and accuracies are observed, the simplified one-diode models can be considered very effective tools. View Full-Text
Keywords: photovoltaic modules; one-diode equivalent circuit; three-parameter model; four-parameter model; I-V characteristics; solar energy photovoltaic modules; one-diode equivalent circuit; three-parameter model; four-parameter model; I-V characteristics; solar energy
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Franzitta, V.; Orioli, A.; Di Gangi, A. Assessment of the Usability and Accuracy of the Simplified One-Diode Models for Photovoltaic Modules. Energies 2016, 9, 1019.

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