Forecasting photovoltaic array power production subject to mismatch losses

Pïcault, Damien; Raison, Bertrand; Bacha, Seddik; Casa, J. de la; Aguilera, J.

doi:10.1016/j.solener.2010.04.009

Cited by 218 publications

(88 citation statements)

References 28 publications

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“…Hence, given the cell string current I, its voltage V cs may be calculated from: A PV module, composed by a number of N cs cell strings connected in series, is described by: At this point it is essential to highlight similarities and differences of this approach with previous relevant studies. In [16]- [17] the Lambert W function is used to describe the PV module and form a system of equations for the PV array, numerically solvable by Newton's method. An improvement is reported in [18], where the inverse Jacobian matrix is explicitly determined.…”

Section: Explicit Model For Pv Stringsmentioning

confidence: 99%

An Explicit PV String Model Based on the Lambert $W$ Function and Simplified MPP Expressions for Operation Under Partial Shading

Batzelis

Routsolias

Papathanassiou

2014

IEEE Trans. Sustain. Energy

151

102

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Section: Explicit Model For Pv Stringsmentioning

confidence: 99%

An Explicit PV String Model Based on the Lambert $W$ Function and Simplified MPP Expressions for Operation Under Partial Shading

Batzelis

Routsolias

Papathanassiou

2014

IEEE Trans. Sustain. Energy

151

102

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“…In this way, the proposed modeling procedure can be used for PV system reconfiguration analysis, for validation of MPP strategies, and, in general, for designing and planning PV systems. Moreover, since the presented model considers different irradiance and temperature conditions for the modules and bypass diodes of an array, the proposed procedure can be useful to analyze the electrical behavior associated with thermal phenomena as the ones studied in [25].…”

Section: Discussionmentioning

confidence: 99%

A Procedure for Modeling Photovoltaic Arrays under Any Configuration and Shading Conditions

et al. 2018

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Photovoltaic (PV) arrays can be connected following regular or irregular connection patterns to form regular configurations (e.g., series-parallel, total cross-tied, bridge-linked, etc.) or irregular configurations, respectively. Several reported works propose models for a single configuration; hence, making the evaluation of arrays with different configuration is a considerable time-consuming task. Moreover, if the PV array adopts an irregular configuration, the classical models cannot be used for its analysis. This paper proposes a modeling procedure for PV arrays connected in any configuration and operating under uniform or partial shading conditions. The procedure divides the array into smaller arrays, named sub-arrays, which can be independently solved. The modeling procedure selects the mesh current solution or the node voltage solution depending on the topology of each sub-array. Therefore, the proposed approach analyzes the PV array using the least number of nonlinear equations. The proposed solution is validated through simulation and experimental results, which demonstrate the proposed model capacity to reproduce the electrical behavior of PV arrays connected in any configuration.

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“…Hence, for a 1000W/m 2 irradiation level, the operating temperature of the PV devices is transposed to the value at STC which process is known as temperature correction. There are several analytical and numerical translation methods of the measured values to desired conditions in the literature [79][80][81][82][83]. Temperature corrected short circuit current over irradiation variation of the cell/module with respect to the irradiation will give knowledge about the spectral dependence eliminated from the thermal effects.…”

Section: Spectral Responsementioning

confidence: 99%

Spectral irradiance effects on the outdoor performance of photovoltaic modules

Eke

Betts

Gottschalg

2017

Renewable and Sustainable Energy Reviews

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The outdoor performance of photovoltaic modules is influenced by spectrum. Even if the irradiance level and the operating temperature is the same, performance difference of photovoltaic modules between the seasons can be increase up to 15% depending on the photovoltaic module type. In this paper, seasonal spectral irradiance effects on the outdoor photovoltaic module performance and previous studies has been summarised thoroughly. The spectrum indicators which are used for spectra characteristics, Useful Fraction and Average Photon Energy are described in detail. This study also indicates spectrum effects on PV performance and outlines the present studies investigating this effect.Keywords: spectral effect, photovoltaic module, outdoor performance, useful fraction, average photon energy 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 spectrum, and a module temperature of 25⁰C. However, STC are not representatives of actual outdoor conditions in most regions of the world. Therefore, it is suspected that the score of a PV module by power rating method under STC is different from the actual performance in outdoor conditions [1][2][3][4][5].The performance of photovoltaic (PV) modules installed outdoor is greatly influenced by various ambient environmental factors such as incident irradiance, the module temperature and the spectral irradiance distribution.In this study, solar spectrum, the spectral effects on PV performance is discussed. There are a lot papers presented in different organizations outlines the effect on the installed PV systems. More than 200 studies are reviewed and some of them are published in journals or conference proceedings, the rest are unpublished or contains only local data. Solar Spectrum and Additional Spectral Irradiance DescriptorsEmission of radiation from the sun contributes to the solar spectrum as observed from Earth. Just above the Earth's atmosphere, the radiation intensity, or Solar Constant, is about 1.353 kW/m 2 [6,7] and the spectral distribution is referred to as an air mass zero (AM0) radiation spectrum. The Air Mass is a measure of how absorption in the atmosphere affects the spectral content and intensity of the solar radiation reaching the Earth's surface. The Air Mass number is given by (1) where is the angle of incidence ( when the sun is directly overhead). Moreover, the outdoor solar spectrum distribution changes during a day because of the aerosol and water vapour. Hence, it is rare to fit the standard solar spectrum (Fig.1 Therefore, a new parameter, angle of incidence is defined to explain the position of solar rays on the plane [10]. is a measure of deviation of something from "straight on". A surface directly facing the sun has an of zero, and a surface parallel to the sun (such as a sunrise striking a horizontal plane) has an of 90°. Sunlight with an inc...

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Forecasting photovoltaic array power production subject to mismatch losses

Cited by 218 publications

References 28 publications

An Explicit PV String Model Based on the Lambert $W$ Function and Simplified MPP Expressions for Operation Under Partial Shading

An Explicit PV String Model Based on the Lambert $W$ Function and Simplified MPP Expressions for Operation Under Partial Shading

A Procedure for Modeling Photovoltaic Arrays under Any Configuration and Shading Conditions

Spectral irradiance effects on the outdoor performance of photovoltaic modules

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