Analytical Modeling of the Maximum Power Point with Series Resistance

This paper presents new analytical expressions for the maximum power point voltage, current, and power that have an explicit dependence on the series resistance. An explicit expression that relates the series resistance to well-known solar cell parameters was also derived. The range of the validity...

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Main Authors: Alfredo Sanchez Garcia, Rune Strandberg
Format: Article
Language:English
Published: MDPI AG 2021-11-01
Series:Applied Sciences
Subjects:
Online Access:https://www.mdpi.com/2076-3417/11/22/10952
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author Alfredo Sanchez Garcia
Rune Strandberg
author_facet Alfredo Sanchez Garcia
Rune Strandberg
author_sort Alfredo Sanchez Garcia
collection DOAJ
description This paper presents new analytical expressions for the maximum power point voltage, current, and power that have an explicit dependence on the series resistance. An explicit expression that relates the series resistance to well-known solar cell parameters was also derived. The range of the validity of the model, as well as the mathematical assumptions taken to derive it are explained and discussed. To test the accuracy of the derived model, a numerical single-diode model with solar cell parameters whose values can be found in the latest installment of the solar cell efficiency tables was used. The accuracy of the derived model was found to increase with increasing bandgap and to decrease with increasing series resistance. An experimental validation of the analytical model is provided and its practical limitations addressed. The new expressions predicted the maximum power obtainable by the studied cells with estimated errors below <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mn>0.1</mn><mo>%</mo></mrow></semantics></math></inline-formula> compared to the numerical model, for typical values of the series resistance.
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spelling doaj.art-d47a63f839f145c3baaff7acd13d5ca92023-11-22T22:21:25ZengMDPI AGApplied Sciences2076-34172021-11-0111221095210.3390/app112210952Analytical Modeling of the Maximum Power Point with Series ResistanceAlfredo Sanchez Garcia0Rune Strandberg1Department of Engineering Sciences, Faculty of Engineering and Science, University of Agder, 4879 Grimstad, NorwayDepartment of Engineering Sciences, Faculty of Engineering and Science, University of Agder, 4879 Grimstad, NorwayThis paper presents new analytical expressions for the maximum power point voltage, current, and power that have an explicit dependence on the series resistance. An explicit expression that relates the series resistance to well-known solar cell parameters was also derived. The range of the validity of the model, as well as the mathematical assumptions taken to derive it are explained and discussed. To test the accuracy of the derived model, a numerical single-diode model with solar cell parameters whose values can be found in the latest installment of the solar cell efficiency tables was used. The accuracy of the derived model was found to increase with increasing bandgap and to decrease with increasing series resistance. An experimental validation of the analytical model is provided and its practical limitations addressed. The new expressions predicted the maximum power obtainable by the studied cells with estimated errors below <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mn>0.1</mn><mo>%</mo></mrow></semantics></math></inline-formula> compared to the numerical model, for typical values of the series resistance.https://www.mdpi.com/2076-3417/11/22/10952maximum power pointseries resistanceLambert’s W functionanalytical expressions
spellingShingle Alfredo Sanchez Garcia
Rune Strandberg
Analytical Modeling of the Maximum Power Point with Series Resistance
Applied Sciences
maximum power point
series resistance
Lambert’s W function
analytical expressions
title Analytical Modeling of the Maximum Power Point with Series Resistance
title_full Analytical Modeling of the Maximum Power Point with Series Resistance
title_fullStr Analytical Modeling of the Maximum Power Point with Series Resistance
title_full_unstemmed Analytical Modeling of the Maximum Power Point with Series Resistance
title_short Analytical Modeling of the Maximum Power Point with Series Resistance
title_sort analytical modeling of the maximum power point with series resistance
topic maximum power point
series resistance
Lambert’s W function
analytical expressions
url https://www.mdpi.com/2076-3417/11/22/10952
work_keys_str_mv AT alfredosanchezgarcia analyticalmodelingofthemaximumpowerpointwithseriesresistance
AT runestrandberg analyticalmodelingofthemaximumpowerpointwithseriesresistance