A Novel High Accuracy PV Cell Model Including Selfheating and Parameter Variation

Gontean, Aurel; Lica, Septimiu; Bularka, Szilard; Szabó, Roland; Lascu, Dan

doi:10.20944/preprints201712.0040.v1

2017

DOI: 10.20944/preprints201712.0040.v1

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A Novel High Accuracy PV Cell Model Including Selfheating and Parameter Variation

Aurel Gontean¹,

Septimiu Lica²,

Szilard Bularka³

et al.

Abstract: This paper proposes a novel model for a PV cell with parameters variance dependency on 7 temperature and irradiance included. The model relies on commercial available data, calculates the 8 cell parameters for standard conditions and then extrapolates them for the whole operating range. 9An up-to-date review of the PV modeling is also included with series and parallel parasitic

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Cited by 8 publications

References 25 publications

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Photovoltaic Cell and Module I-V Characteristic Approximation Using Bézier Curves

Szabó

Gontean

2018

Applied Sciences

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The aim of this work was to introduce new ways to model the I-V characteristic of a photovoltaic (PV) cell or PV module using straight lines and Bézier curves. This is a complete novel approach, Bézier curves being previously used mainly for computer graphics. The I-V characteristic is divided into three sections, modeled with lines and a quadratic Bézier curve in the first case and with three cubic Bézier curves in the second case. The result proves to be accurate and relies on the fundamental points usually present in the PV cell datasheets: V oc (the open circuit voltage), I sc (the short circuit current), V mp (the maximum power corresponding voltage) and I mp (the maximum power corresponding current), and the parasitic resistances R sh0 (shunt resistance at I sc) and R s0 (series resistance at V oc). The proposed algorithm completely defines all the implied control points and the error is analyzed. The temperature and irradiance influence is also analyzed. The model is also compared using the least squares fitting method. The final validation shows how to use Bézier cubic curves to accurately represent the I-V curves of an extensive range of PV cells and arrays.

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Photovoltaic Cell and Module I-V Characteristic Approximation Using Bézier Curves

Szabó

Gontean

2018

Applied Sciences

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Assessment of Explicit Models for Different Photovoltaic Technologies

et al. 2018

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Accurate and simple mathematical models are usually required to assess the performances of photovoltaic devices. In particular, it is common practice to use explicit models to evaluate the current-voltage (I-V) performance curves, mainly based on simple analytical expressions that enable the parameters determination with a little computational effort. Six different explicit photovoltaic models (i.e., explicit I-V equations) by different authors (Akbaba & Alattawi; El-Tayyan; Karmalkar & Haneefa; Das/Saetre et al.; Das; and Pindado & Cubas) are analyzed and compared. This comparison is carried out by fitting these models to eight I-V curves for different technologies, including Si, Si polycrystalline, Ga-As, and plastic solar cells. The accuracy of each model depends on the photovoltaic technology to which it is applied. The best fit to each I-V curve studied is normally obtained with a different model, with an average deviation under 2% in terms of short-circuit current (normalized RMSE). In general, the model proposed by Karmalkar & Haneefa shows the highest level of accuracy, and is a good fit for all I-V curves studied.

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Modeling Solar Cells Operating at Waste Light

Górecki¹,

Dąbrowski²,

Krac³

2021

Energies

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The article concerns the investigations of solar cells irradiated by waste light. The measurement method and instruments used are presented. Using this method, the spectra of the light emitted by different light sources are presented and the results of measurements of sensitivity characteristics of the selected solar cell are shown. On the basis of the obtained results of the measurements, a new model of a solar cell dedicated for SPICE is formulated. In this model, an influence of spectrum characteristics of the modeled solar cell on its photocurrent is taken into account. The correctness of this model is verified experimentally for all the considered lighting sources. It is proved that photocurrent is the highest for irradiation using a classical bulb, whereas it is the lowest for a fluorescent lamp.

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A Novel High Accuracy PV Cell Model Including Selfheating and Parameter Variation

Cited by 8 publications

References 25 publications

Photovoltaic Cell and Module I-V Characteristic Approximation Using Bézier Curves

Photovoltaic Cell and Module I-V Characteristic Approximation Using Bézier Curves

Assessment of Explicit Models for Different Photovoltaic Technologies

Modeling Solar Cells Operating at Waste Light

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