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Open AccessArticle

A New Simplified Five-Parameter Estimation Method for Single-Diode Model of Photovoltaic Panels

1
Department of Industrial and Information Engineering and Economics (DIIIE), University of L’Aquila, Piazzale Pontieri 1, Monteluco di Roio, I 67100, 67100 L’Aquila, Italy
2
Agenzia nazionale per le nuove tecnologie, l’energia e lo sviluppo economico sostenibile (ENEA), 00123 S.M. Di Galeria, 00100 Rome, Italy
*
Author to whom correspondence should be addressed.
Energies 2019, 12(22), 4271; https://doi.org/10.3390/en12224271
Received: 8 October 2019 / Revised: 1 November 2019 / Accepted: 6 November 2019 / Published: 8 November 2019
(This article belongs to the Special Issue PV Systems: from Small- to Large-Scale)
This work proposes a new simplified five-parameter estimation method for a single-diode model of photovoltaic panels. The method, based on an iterative algorithm, is able to estimate the parameter of the electrical single-diode model from the panel’s datasheet. Two iterative steps are used to estimate the five parameters starting from data provided by the manufacturer (nameplate values or I–V curves). The first step permits finding the optimal value of the diode ideality factor A, and the second step allows the calculation of the Rp value to improve the accuracy. A model that takes into account variations in temperature and solar irradiance has been used to validate the behavior of the output parameters. Compared to other estimation work, the proposed method shows the best result in the standard test condition (STC) and with a variable solar irradiance. Indeed, the optimization of the A, Rs, and Rp parameters allows guaranteeing the minimum error between I–V curves obtained from method and datasheet. View Full-Text
Keywords: PV modules; PV modeling; parameters estimation; photovoltaic cells; PV systems; PV optimization; iterative method PV modules; PV modeling; parameters estimation; photovoltaic cells; PV systems; PV optimization; iterative method
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MDPI and ACS Style

Stornelli, V.; Muttillo, M.; de Rubeis, T.; Nardi, I. A New Simplified Five-Parameter Estimation Method for Single-Diode Model of Photovoltaic Panels. Energies 2019, 12, 4271.

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