The Effects of Module Temperature on the Energy Yield of Bifacial Photovoltaics: Data and Model

Bifacial photovoltaics (BPVs) are emerging with large momentum as promising solutions to improve energy yield and cost of PV systems. To reach its full potential, an accurate understanding of the physical characteristics of BPV technology is required. For this reason, we collected experimental data to refine a physical model of BPV. In particular, we simultaneously measured the module temperature, short circuit current (Isc), open-circuit voltage (Voc), power at the maximum power point (Pmpp), and the energy yield of a bifacial and a monofacial minimodule. Such minimodules, realised with the same geometry, cell technology, and module lamination, were tested under the same clear sky outdoor conditions, from morning to afternoon, for three days. The bifacial system experimentally shows higher module temperatures under operation, about 10 °C on a daily average of about 40 °C. Nevertheless, its energy yield is about 15% larger than the monofacial one. We propose a physical quantitative model that fits the experimental data of module temperature, Isc, Voc, Pmpp, and energy yield. The model was then applied to predict the annual energy yield of PV module strings. The effect of different PV module temperature coefficients on the energy yield is also discussed.

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MATLAB Modeling and Simulation of Photovoltaic Modules

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.512-515.246 ◽

2012 ◽

Vol 512-515 ◽

pp. 246-249

Author(s):

Soliman Mahmoud ◽

Mejd Alsari ◽

Esra Reda ◽

Ruqiya Alhammadi

Keyword(s):

Short Circuit ◽

Short Circuit Current ◽

Evaluation Study ◽

Open Circuit ◽

Modeling Method ◽

Circuit Simulator ◽

Pv Module ◽

Non Linear Equation ◽

Power Point ◽

Relative Errors

In this paper a modeling method is investigated that finds the non-linear equation parameters of a photovoltaic (PV) module in order to obtain the desired PV model using any circuit simulator. This modeling method adjusts the I-V curve at three remarkable points: the open circuit voltage, the short circuit current, and the maximum power point [1]. Three models are realized using this technique namely, the single-diode model, the two-diode model, and the three-diode model. The evaluation study of the accuracy of these three models showed relative errors ranging from 32% to 50%. Further, this technique is improved by adjusting the I-V curve at more than three points depending on the number of unknowns to be found for each model, which showed a reduction in the relative error ranging from 0.37% to 38%.

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Prediction of Solar Irradiance Based on Artificial Neural Networks

Inventions ◽

10.3390/inventions4030045 ◽

2019 ◽

Vol 4 (3) ◽

pp. 45 ◽

Cited By ~ 4

Author(s):

Waleed I. Hameed ◽

Baha A. Sawadi ◽

Safa J. Al-Kamil ◽

Mohammed S. Al-Radhi ◽

Yasir I. A. Al-Yasir ◽

...

Keyword(s):

Neural Networks ◽

Artificial Neural Networks ◽

Solar Irradiance ◽

Open Circuit Voltage ◽

Low Cost ◽

Short Circuit ◽

Short Circuit Current ◽

Open Circuit ◽

Pv Module ◽

Artificial Neural

Prediction of solar irradiance plays an essential role in many energy systems. The objective of this paper is to present a low-cost solar irradiance meter based on artificial neural networks (ANN). A photovoltaic (PV) mathematical model of 50 watts and 36 cells was used to extract the short-circuit current and the open-circuit voltage of the PV module. The obtained data was used to train the ANN to predict solar irradiance for horizontal surfaces. The strategy was to measure the open-circuit voltage and the short-circuit current of the PV module and then feed it to the ANN as inputs to get the irradiance. The experimental and simulation results showed that the proposed method could be utilized to achieve the value of solar irradiance with acceptable approximation. As a result, this method presents a low-cost instrument that can be used instead of an expensive pyranometer.

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Expression de la Tension Photovoltaïque Induite par Transition Interbande Dans des Couches Minces de Sulfure de Zinc

ElectroComponent Science and Technology ◽

10.1155/apec.2.147 ◽

1975 ◽

Vol 2 (2) ◽

pp. 147-155 ◽

Cited By ~ 5

Author(s):

A. Tosser ◽

H. Murray

Keyword(s):

Experimental Data ◽

Conduction Band ◽

Photon Energy ◽

Open Circuit Voltage ◽

Sandwich Structures ◽

Interband Transition ◽

Short Circuit ◽

Short Circuit Current ◽

Open Circuit ◽

Good Agreement

En considérant les variations dimensionnelles de la tension photovoltaïque induite en circuit ouvert par des rayonnements lumineux d'énergie supérieure à 3,66 eV dans des structures sandwich Al/ZnS/Au, ainsi que les variations avec le flux lumineux du courant de court-circuit et de la conductance correspondant à la phototransition entre bandes, l'hypothèse d'une quasi-bande de conduction créée par l'ionisation de centres coulombiens est avancée. Elle conduit à une formulation de la tension photovoltaïque en bonne cohérence avec l'expérience.Variations with thickness of open-circuit voltage, short-circuit current and photoconductance associated to interband transition lead to postulate the existence of a quasi-conduction band, associated with ionized coulombic centres, in Al/ZnS/Au illuminated (photon energy > 3,66 eV) sandwich structures. An expression of open-circuit voltage is deduced, in good agreement with experimental data.

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Device Performance of Emerging Photovoltaic Materials (Version 2)

10.22541/au.163111075.58012093/v2 ◽

2021 ◽

Author(s):

Osbel Almora ◽

Derya Baran ◽

Guillermo C. Bazan ◽

Christian Berger ◽

Carlos I. Cabrera ◽

...

Keyword(s):

Short Circuit ◽

Detailed Balance ◽

Short Circuit Current ◽

Short Circuit Current Density ◽

Open Circuit ◽

Utilization Efficiency ◽

Bandgap Energy ◽

Energy Yield ◽

Research Subjects ◽

Solar Cell Performance

Following the 1 release of the “Emerging PV reports” , the best achievements in the performance of emerging photovoltaic devices in diverse emerging photovoltaic research subjects are summarized, as reported in peer-reviewed articles in academic journals since August 2020. Updated graphs, tables and analyses are provided with several performance parameters, e.g. power conversion efficiency, open-circuit voltage, short-circuit current density, fill factor, light utilization efficiency, and stability test energy yield. These parameters are presented as a function of the photovoltaic bandgap energy and the average visible transmittance for each technology and application, and are put into perspective using, e.g., the detailed balance efficiency limit. The 2 instalment of the“Emerging PV reports” extends the scope towards tandem solar cells and presents the current state of the art in tandem solar cell performance for various material combinations.

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Solar Photovoltaic Cell Parameters Extraction Using Differential Evolution Algorithm

Proceedings ◽

10.3390/proceedings2020063043 ◽

2020 ◽

Vol 63 (1) ◽

pp. 43

Author(s):

Rachid Herbazi ◽

Youssef Kharchouf ◽

Khalid Amechnoue ◽

Ahmed Khouya ◽

Adil Chahboun

Keyword(s):

Solar Cells ◽

Differential Evolution ◽

Short Circuit ◽

Differential Evolution Algorithm ◽

Short Circuit Current ◽

Photovoltaic Cell ◽

Open Circuit ◽

Good Precision ◽

Cell Parameters ◽

Power Point

This work presents a method for extracting parameters from photovoltaic (PV) solar cells, based on the three critical points of the current-voltage (I-V) characteristic, i.e., the short-circuit current, the open circuit voltage and the maximum power point (MPP). The method is developed in the Python programming language using differential evolution (DE) and a three-point curve fitting approach. It shows a good precision with root mean square error (RMSE), for different solar cells, lower than to those cited in the literature. In addition, the method is tested based on the measurements of a solar cell in the Faculty of Science and Technology of Tangier (FSTT) laboratory, thus giving a good agreement between the measured data and those calculated (i.e., RMSE = 7.26 × 10−4) with fewer iterations for convergence.

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Maximum Power Point Tracking (MPPT) for Photovoltaic systems using open circuit voltage and short circuit current

3rd International Conference on Systems and Control ◽

10.1109/icosc.2013.6750840 ◽

2013 ◽

Cited By ~ 9

Author(s):

S. Hadji ◽

J.-P. Gaubert ◽

F. Krim

Keyword(s):

Open Circuit Voltage ◽

Short Circuit ◽

Maximum Power Point Tracking ◽

Short Circuit Current ◽

Open Circuit ◽

Photovoltaic Systems ◽

Maximum Power Point ◽

Point Tracking ◽

Power Point Tracking ◽

Power Point

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Comparative Study of the Electrical Characteristics of Different Photovoltaic Modules in Outdoor Environment

Engineering, Technology & Applied Science Research ◽

10.48084/etasr.2976 ◽

2019 ◽

Vol 9 (5) ◽

pp. 4600-4604

Author(s):

A. R. Jatoi ◽

S. R. Samo ◽

A. Q. Jakhrani

Keyword(s):

Thin Film ◽

Power Output ◽

Open Circuit Voltage ◽

Short Circuit ◽

Short Circuit Current ◽

Open Circuit ◽

Outdoor Environment ◽

Electrical Characteristics ◽

Pv Module ◽

Yearly Average

The electrical characteristics of photovoltaic (PV) modules are affected by solar radiation and module temperature in outdoor environment. It was found that polycrystalline gained a yearly 0.50°C more average module temperature than monocrystalline. Non-crystalline amorphous modules got a yearly 0.83°C more average temperature than thin film modules. The attainment and release of module temperature was related with material properties of PV module technologies. The amorphous module gave 5.7%, 2.7% and 15.0% more yearly average open-circuit voltage than polycrystalline, monocrystalline and thin film modules. Besides that, the thin film modules gave 6.5% and 1.7%, 9.3% and 4.0%, and 11.3% and 8.8% more yearly average normalized short-circuit current and power output than polycrystalline, monocrystalline and thin film modules respectively. It was shown that the maximum annual average open-circuit voltage was given by amorphous modules and maximum short-circuit current and power output by thin film modules during the study period.

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Degradation effects of the output electrical characteristics of Si solar cells as a result of ionizing radiation under low light conditions

Nuclear Technology and Radiation Protection ◽

10.2298/ntrp1503210s ◽

2015 ◽

Vol 30 (3) ◽

pp. 210-213 ◽

Cited By ~ 3

Author(s):

Nebojsa Stojanovic ◽

Biljana Simic ◽

Koviljka Stankovic ◽

Djordje Lazarevic

Keyword(s):

Solar Cells ◽

Gamma Radiation ◽

Crystalline Silicon ◽

Short Circuit ◽

Short Circuit Current ◽

Open Circuit ◽

Low Light ◽

Crystalline Silicon Solar Cells ◽

Current Maximum ◽

Power Point

This paper presents results of radiation resistance of different types of commercially available single- and poly-crystalline silicon solar cells. Sample cells were subjected to gamma radiation from gamma radiation source 60Co. Characteristic parameters of solar cells were extracted from obtained I-V curves: open circuit voltage, short circuit current, maximum power point voltage and current, efficiency, fill factor, and series resistance. Obtained results show the level of parameters' degradation with purpose of increasing solar cells applications in radiation environments.

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Modélisation et commande d’un panneau photovoltaïque dans l’environnement PSIM

10.31219/osf.io/wth8y ◽

2019 ◽

Author(s):

Saad Motahhir ◽

Abdelaziz El Ghzizal ◽

Aziz Derouich

Keyword(s):

Short Circuit ◽

Short Circuit Current ◽

Open Circuit ◽

Maximum Power ◽

Physical Parameters ◽

Maximum Power Point ◽

Shunt Resistance ◽

Photovoltaic Panel ◽

Current Voltage ◽

Power Point

The objective of this work is to make a model of photovoltaic cells (PV) dedicated to teaching renewable energy using PSIM software. This model is based on ratings provided by the manufacturer as: open circuit voltage, short circuit current, voltage and current corresponding to the maximum power point. So the resulting model has a better approach and takes into account the influence of different physical parameters including temperature, irradiation, series resistance, shunt resistance and saturation current of the diode. After a general presentation of the photovoltaic conversion chain, the article details, at first, the modeling of a photovoltaic panel. Secondly, we focus on the implementation of a MPPT command for controlling the DC / DC to operate the PV array at maximum power (MPP).

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Performance of Solar Module with Presence of Two Types of Reflectors in Concentrator System

Iraqi Journal of Computer Communication Control and System Engineering ◽

10.33103/uot.ijccce.19.2.6 ◽

2019 ◽

pp. 50-57

Keyword(s):

Fossil Fuels ◽

Open Circuit Voltage ◽

Tracking System ◽

Short Circuit ◽

Average Daily Gain ◽

Short Circuit Current ◽

Open Circuit ◽

Solar Module ◽

Pv Module ◽

Daily Gain

Any work to improve the performance of the solar modules could add to their economic competitiveness against fossil fuels. In the present work the performance of PV solar module was improved by using V-Trough concentrator system (CPV) which moved by two axis tracking system. The concentrator consists of two flat reflectors of area 2 m2 for each one with geometric concentration ratio of 2X. To optimize the performance of the V-Trough CPV systems, two types of reflector material, Aluminum and mirror (glass coated by silver nitrate) were used. The results indicated that the temperature of PV reference module was higher than the ambient temperature by 27oC but there is too small difference in temperature between the tracking PV module with the reference which ranged to 2oC, while the temperature of the CPV system was higher than reference by 37oC. The temperature of the PV module under mirror reflectors was lower than module combined with Aluminum reflectors by 3oC. As a result of arising of the temperature of CPV system in compare with PV reference module, the open circuit voltage was droop by 0.7 V, 0.5 V for PV module under mirror and Aluminum reflectors respectively. The reflectors increased the short circuit current values by 2.1 A, 2.6 A for PV module combined with mirror and Aluminum reflectors respectively. Accordingly the performance (as an average daily gain of output power) of the PV solar module was improved by using V-Trough CPV system, 44%, 34% by using Aluminum and mirror reflectors respectively.

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