An improved five-parameter model for photovoltaic modules

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Abstract

This paper presents a new five-parameter model capable of analytically describing the I–V characteristic of a photovoltaic module for each generic condition of operative temperature and solar irradiance. The parameters of the equivalent electrical circuit are extracted by solving a system of equations based on data commonly issued by manufacturers in standard rating conditions with a trial and error process. The procedure, which does not require any special equations solver, can be easily coded into a short software routine using simple languages and finds the solution of the system of equations with the desired accuracy without needing to be guided towards solutions starting from fitted initial values of the searched parameters. In particular, as implemented in VBA macros in Microsoft Excel, the model provides the most accurate results with a rapid convergence. To verify the capability of the new model to fit PV panel characteristics, the procedure was tested on two different panels. Results were compared with the data issued by manufacturers and with the results obtained using five-parameter models proposed by other authors.
Lingua originaleEnglish
pagine (da-a)1358-1370
Numero di pagine12
RivistaSolar Energy Materials and Solar Cells
Volume94
Stato di pubblicazionePublished - 2010

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Macros
Networks (circuits)
Temperature

All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment
  • Surfaces, Coatings and Films
  • Electronic, Optical and Magnetic Materials

Cita questo

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title = "An improved five-parameter model for photovoltaic modules",
abstract = "This paper presents a new five-parameter model capable of analytically describing the I–V characteristic of a photovoltaic module for each generic condition of operative temperature and solar irradiance. The parameters of the equivalent electrical circuit are extracted by solving a system of equations based on data commonly issued by manufacturers in standard rating conditions with a trial and error process. The procedure, which does not require any special equations solver, can be easily coded into a short software routine using simple languages and finds the solution of the system of equations with the desired accuracy without needing to be guided towards solutions starting from fitted initial values of the searched parameters. In particular, as implemented in VBA macros in Microsoft Excel, the model provides the most accurate results with a rapid convergence. To verify the capability of the new model to fit PV panel characteristics, the procedure was tested on two different panels. Results were compared with the data issued by manufacturers and with the results obtained using five-parameter models proposed by other authors.",
author = "Aldo Orioli and {Lo Brano}, Valerio and Giuseppina Ciulla and {Di Gangi}, Alessandra",
year = "2010",
language = "English",
volume = "94",
pages = "1358--1370",
journal = "Solar Energy Materials and Solar Cells",
issn = "0927-0248",
publisher = "Elsevier",

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AU - Orioli, Aldo

AU - Lo Brano, Valerio

AU - Ciulla, Giuseppina

AU - Di Gangi, Alessandra

PY - 2010

Y1 - 2010

N2 - This paper presents a new five-parameter model capable of analytically describing the I–V characteristic of a photovoltaic module for each generic condition of operative temperature and solar irradiance. The parameters of the equivalent electrical circuit are extracted by solving a system of equations based on data commonly issued by manufacturers in standard rating conditions with a trial and error process. The procedure, which does not require any special equations solver, can be easily coded into a short software routine using simple languages and finds the solution of the system of equations with the desired accuracy without needing to be guided towards solutions starting from fitted initial values of the searched parameters. In particular, as implemented in VBA macros in Microsoft Excel, the model provides the most accurate results with a rapid convergence. To verify the capability of the new model to fit PV panel characteristics, the procedure was tested on two different panels. Results were compared with the data issued by manufacturers and with the results obtained using five-parameter models proposed by other authors.

AB - This paper presents a new five-parameter model capable of analytically describing the I–V characteristic of a photovoltaic module for each generic condition of operative temperature and solar irradiance. The parameters of the equivalent electrical circuit are extracted by solving a system of equations based on data commonly issued by manufacturers in standard rating conditions with a trial and error process. The procedure, which does not require any special equations solver, can be easily coded into a short software routine using simple languages and finds the solution of the system of equations with the desired accuracy without needing to be guided towards solutions starting from fitted initial values of the searched parameters. In particular, as implemented in VBA macros in Microsoft Excel, the model provides the most accurate results with a rapid convergence. To verify the capability of the new model to fit PV panel characteristics, the procedure was tested on two different panels. Results were compared with the data issued by manufacturers and with the results obtained using five-parameter models proposed by other authors.

UR - http://hdl.handle.net/10447/50176

M3 - Article

VL - 94

SP - 1358

EP - 1370

JO - Solar Energy Materials and Solar Cells

JF - Solar Energy Materials and Solar Cells

SN - 0927-0248

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