33 results on '"Martial, Zoungrana"'
Search Results
2. Modeling the response of an illuminated polysilicon solar cell under the influence of radio waves, a 3D approach
- Author
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Vinci de Dieu Bokoyo Barandja, Bienvenu Magloire Pakouzou, Emmanuel Wendsongré Ramdé, Jean M’boliguipa, Mamoudou Saria, Martial Zoungrana, and Issa Zerbo
- Subjects
Modeling ,Polysilicon solar cell ,Radio waves ,3-D ,Electrical engineering. Electronics. Nuclear engineering ,TK1-9971 - Abstract
This work investigated the response of an illuminated polysilicon PV cell under AM radio waves. Using a 3 D analysis, the equations which describe the movement of excess electrons and their space and time behavior were solved in order to first find the density of the excess electrons and to subsequently derive the current density and the voltage. The effect of the amplitude of the electromagnetic field (EMF) on the current density and the voltage were studied by varying the distance between the PV cell and an AM radio antenna. The combination of the two characteristics, i.e. current density–voltage and Power–Voltageallowed the computation of the efficiency, the fill factor and the parasitic resistances (Rs, Rsh) of the electrical equivalent circuit of the PV cell. The study showed that from infinite distance to 50 m, corresponding to the Fraunhofer zone, the conversion efficiency increases slightly by about 1% and the fill factor decreases within the same order of magnitude. On the other hand, the series and shunt resistances fall considerably down by about 14% and 13% respectively.The power output curves versus the junction dynamic velocity which allow the computation of the shunt resistance, are used to highlight the impact of the electromagnetic field (EMF) on the operation of the cell. Between an infinite distance and 50 m, the results indicate a very high drop of the shunt resistance (from 64,280 Ω cm 2 to 11 Ω cm 2). Overall, one can conclude that the presence of EMF adversely affects the operation of polysilicon PV cell considering the high drop of the shunt resistance.
- Published
- 2021
- Full Text
- View/download PDF
3. Investigating the Effect of Inclination Angle of Magnetic Field Vector on Silicon PV Modules
- Author
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Dioari Ulrich Combari, Emmanuel Wendsongré Ramde, Bruno Korgo, Ramatou Saré, Martial Zoungrana, and Issa Zerbo
- Subjects
Renewable energy sources ,TJ807-830 - Abstract
In earlier studies, we have shown theoretically and experimentally that magnetic fields (MFs) have negative impact on silicon PV module (photovoltaic module). A noticeable decline in photocurrent with a slight increase in photovoltage was observed. Also, how those fields affected other key module’s parameters was also studied. These studies concluded that an increase in the magnitude of the MF resulted in the decrease of the efficiency of the silicon PV module. The previous experimental studies assumed that the MF vector formed zero angle of inclination with respect to the photosensitive face of the module. They did not factor in any effect that could be observed when the field vector is inclined. The present experimental work is an attempt to fill that gap. The characteristic curves of the PV module were plotted in the same system of axis for different values of the inclination angle of the MF vector. Correspondingly, the characteristic values (Pmax, Imax, Vmax, Isc, and Voc) of the PV module were also determined. These parameters then allowed the calculation of the efficiency of the module, its fill factor, and the equivalent circuit series and shunt resistances. It is observed that the module efficiency increases with the inclination of the MF vector, indicating that the effect of the MF on the PV module is reduced when its vector aligns towards a direction that is perpendicular to the base of the module. For example, when α moves from 0 to 90°, the power output and consequently the efficiency of the PV module relatively increase of 14%.
- Published
- 2021
- Full Text
- View/download PDF
4. Effect of Reverse Polarisation of an Electromagnetic Field on the Performance of a Silicon PV Cell
- Author
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Mamoudou Saria, Bernard Zouma, Bruno Korgo, Vinci de Dieu Bokoyo Barandja, Martial Zoungrana, Issa Zerbo, and Dieudonné Joseph Bathiebo
- Subjects
Materials of engineering and construction. Mechanics of materials ,TA401-492 - Abstract
This paper investigated, by one-dimensional modelling, the effects of reverse polarisation of an electromagnetic field, generated by an amplitude modulation radio antenna, on the efficiency of a silicon PV cell. Through a simulation, the effects of both the incidence angle and the electromagnetic field magnitude on the power output of the PV cell are analyzed. The power output curves against the junction dynamic velocity are used to find the junction dynamic velocity at the equilibrium, the maximum power output, and the efficiency of the PV cell. The results have shown that the presence of important electromagnetic fields in the neighborhood of a silicon PV cell decreases its performance.
- Published
- 2020
- Full Text
- View/download PDF
5. Propagation of Electromagnetic Wave into an Illuminated Polysilicon PV Cell
- Author
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Vinci de Dieu Bokoyo Barandja, Bernard Zouma, Auguste Oscar Mackpayen, Martial Zoungrana, Issa Zerbo, and Dieudonné Joseph Bathiebo
- Subjects
Electrical engineering. Electronics. Nuclear engineering ,TK1-9971 ,Cellular telephone services industry. Wireless telephone industry ,HE9713-9715 - Abstract
The increasing cohabitation between telecommunication antennas generating electromagnetic waves and solar panels poses the problem of interaction between these radio waves and solar cells. In order to study the effect of radio waves on the performance of a polycrystalline silicon solar cell in a three-dimensional approach, it is necessary to assess the attenuation of the radio wave in the illuminated polysilicon grain and also to find the expressions of its components. This work investigated the attenuation of radio waves into a polycrystalline silicon grain by analyzing, firstly, the behaviour of the penetration length of the radio waves into the polysilicon grain and secondly, the behaviour of the attenuation factor. The propagation of the radio waves into the polycrystalline silicon grain can be considered without attenuation that can be neglected.
- Published
- 2020
- Full Text
- View/download PDF
6. Effect of Incidence Angle Varying from 0 rad to π/2 rad and Intensity of Radio Waves on the Performance of a Silicon Solar Cell
- Author
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Issa Zerbo, Mamoudou Saria, Martial Zoungrana, Adama Ouedraogo, and Dieudonné Joseph Bathiebo
- Subjects
conversion efficiency ,incidence angle ,radio waves ,shunt resistance ,solar cell ,Engineering (General). Civil engineering (General) ,TA1-2040 - Abstract
In this work, a one dimensional approach is presented for modelling the effect of the incidence angle, varying from 0 rad to π/2 rad, and the intensity of radio waves on the performance of a polycrystalline silicon solar cell under constant multispectral illumination. By solving the continuity equation in steady state, we derived the expression of the density of excess minority carriers, the photocurrent density, the photovoltage, the electric power and their dependence on the incidence angle and the intensity of the electromagnetic field is analyzed. Using the electric power curves versus junction dynamic velocity we determined the electric power lost at the junction, the maximum electric power and we calculated the conversion efficiency for various incidence angle and intensity of the electromagnetic field. The leakage photocurrent density, deduced from the photocurrent density curves versus junction dynamic velocity, and the electric power lost at the junction allowed us to calculate the shunt resistance of the solar cell according to the incidence angle and the intensity of the electromagnetic field. The numerical data show the negative effect of radios waves on the performance of a silicon solar cell.
- Published
- 2017
- Full Text
- View/download PDF
7. Comparative study of the effects of simulation models on the electronic and electrical parameters of a silicon pv cell
- Author
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Kpéli Esso Ehanam Tchedre, Mahamadi Savadogo, Guy Serge Tchouadep, Issa Zerbo, and Martial Zoungrana
- Subjects
General Arts and Humanities ,Silicon PV cell, simulation, study models, electronic parameters, electric parameters - Abstract
For silicon solar cells simulation studies, one dimensional (1D), two dimensional 2D) and t hree dimensional (3D) models are used. Depending of model proposed and assumptions done for the study, the electronic and electrical parameters and then the performance of the solar cell can be influenced. This situation raises the problem of the relevance of the choice of the study model and the quality of the resulting results. This work, propose comparative study of the electronic and electric parameters of 1D model, 3D analytical model and 3D empirical model. In this study, continuity equations of excess minority electrons are solved for 1D and 3D models and analytical expressions of electronic parameters (density of electrons δ, intrinsic junction recombination velocity Sf0 and recombination velocity at back surface Sb) and electric parameters (Jsc, Voc, η) are derived. The influence of the model chosen on the electric and electronic parameters of the PV cell have been presented. It appears in this study that the choice of the simulation model has a large influence on the electronic and electrical parameters the PV cell. The one-dimensional formulation (1D) overestimates the solar cell efficiency comparatively to the three-dimensional (3D) formulations. The study put in evidence also that for the same grain size, the solar cell efficiency resulting of 3D classical formulation is overestimates than one resulting of 3D empirical formulation.
- Published
- 2023
8. Uncooled PV cell under variable light concentration: Determination of profiles of the temperature, the intrinsic properties and the carrier density
- Author
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Mahamadi, SAVADOGO, primary, Pegdwindé, Ousséni Fabrice OUEDRAOGO, additional, Adama, OUEDRAOGO, additional, Lamine, ZIDA, additional, Martial, ZOUNGRANA, additional, and Issa, ZERBO, additional
- Published
- 2022
- Full Text
- View/download PDF
9. Analysis and Comparison of Doping Level Effects on a Crystalline Silicon PV Cell under Both Moderate Light Concentration and Normal Illumination Modes
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Mahamadi Savadogo, Adama Ouedraogo, Boubacar Soro, Zi Daouda Koudougou, Martial Zoungrana, and Issa Zerbo
- Published
- 2022
10. Impact of the Thicknesses of the p and p+ Regions on the Electrical Parameters of a Bifacial PV Cell
- Author
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Ramatou Konate, Bernard Zouma, Adama Ouedraogo, Bruno Korgo, Martial Zoungrana, and Sié Kam
- Published
- 2022
11. Performance Investigation of a Silicon Photovoltaic Module under the Influence of a Magnetic Field
- Author
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Dioari Ulrich Combari, Emmanuel Wendsongré Ramde, Idrissa Sourabie, Martial Zoungrana, Issa Zerbo, and Dieudonné Joseph Bathiebo
- Subjects
Physics ,QC1-999 - Abstract
Aside from the terrestrial magnetic field that is generated from the earth core, power transmission, and distribution lines, transformers and other equipment do produce a certain amount of magnetic field that could interfere with the performance of photovoltaic modules. This study conducted an experiment and investigated the performance of a silicon photovoltaic module subjected to a magnetic field. The current-voltage and power-voltage characteristics were plotted in the same axis system and allowed us to find, as a function of the magnetic field, the electrical parameters of the photovoltaic module such as maximum electric power, fill factor, conversion efficiency, and charge resistance at the maximum power point. These electrical parameters were then used to calculate the series and shunt resistances of the equivalent circuit of the photovoltaic module. The results have shown that the efficiency of a solar module is affected by the presence of magnetic fields. However, the magnitude of ambient magnetic field generated by power transmissions lines and other equipment is extremely low (in the order of 10−2 mT or less) as compared to the values of the magnetic field used in this study. That made it difficult to conclude as to the impact of such field on solar photovoltaic installations.
- Published
- 2018
- Full Text
- View/download PDF
12. Temperature Effect on Light Concentration Silicon Solar Cell’s Operating Point and Conversion Efficiency
- Author
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Dieudonné Joseph Bathiebo, Idrissa Sourabie, Martial Zoungrana, Boubacar Soro, Mahamadi Savadogo, Issa Zerbo, and Ramatou Konate
- Subjects
Photocurrent ,Materials science ,integumentary system ,Open-circuit voltage ,law ,Band gap ,Diffusion ,Photovoltaic system ,Energy conversion efficiency ,Solar cell ,Crystalline silicon ,Atomic physics ,law.invention - Abstract
It is well known that temperature acts negatively on practically all the parameters of photovoltaic solar cells. Also, the solar cells which are subjected to particularly very high temperatures are the light concentration solar cells and are used in light concentration photovoltaic systems (CPV). In fact, the significant heating of these solar cells is due to the concentration of the solar flux which arrives on them. Light concentration solar cells appear as solar cells under strong influences of heating and temperature. It is therefore necessary to take into account temperature effect on light concentration solar cells performances in order to obtain realistic results. This one-dimensional study of a crystalline silicon solar cell under light concentration takes into account electrons concentration gradient electric field in the determination of the continuity equation of minority carriers in the base. To determine excess minority carrier’s density, the effects of temperature on the diffusion and mobility of electrons and holes, on the intrinsic concentration of electrons, on carrier’s generation rate as well as on width of band gap have also been taken into account. The results show that an increase of temperature improves diffusion parameters and leads to an increase of the short-circuit photocurrent density. However, an increase of temperature leads to a significant decrease in open-circuit photovoltage, maximum electric power and conversion efficiency. The results also show that the operating point and the maximum power point (MPP) moves to the open circuit when the cell temperature increases.
- Published
- 2020
13. Investigating the Effect of Inclination Angle of Magnetic Field Vector on Silicon PV Modules
- Author
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Emmanuel Wendsongre Ramde, Bruno Korgo, Issa Zerbo, Ramatou Saré, Martial Zoungrana, and Dioari Ulrich Combari
- Subjects
Materials science ,Article Subject ,Field (physics) ,Silicon ,020209 energy ,chemistry.chemical_element ,Magnitude (mathematics) ,TJ807-830 ,02 engineering and technology ,01 natural sciences ,Renewable energy sources ,Optics ,0103 physical sciences ,0202 electrical engineering, electronic engineering, information engineering ,Perpendicular ,General Materials Science ,010302 applied physics ,Photocurrent ,Renewable Energy, Sustainability and the Environment ,business.industry ,Photovoltaic system ,General Chemistry ,Atomic and Molecular Physics, and Optics ,Magnetic field ,chemistry ,Equivalent circuit ,business - Abstract
In earlier studies, we have shown theoretically and experimentally that magnetic fields (MFs) have negative impact on silicon PV module (photovoltaic module). A noticeable decline in photocurrent with a slight increase in photovoltage was observed. Also, how those fields affected other key module’s parameters was also studied. These studies concluded that an increase in the magnitude of the MF resulted in the decrease of the efficiency of the silicon PV module. The previous experimental studies assumed that the MF vector formed zero angle of inclination with respect to the photosensitive face of the module. They did not factor in any effect that could be observed when the field vector is inclined. The present experimental work is an attempt to fill that gap. The characteristic curves of the PV module were plotted in the same system of axis for different values of the inclination angle of the MF vector. Correspondingly, the characteristic values ( P max , I max , V max , I sc , and V oc ) of the PV module were also determined. These parameters then allowed the calculation of the efficiency of the module, its fill factor, and the equivalent circuit series and shunt resistances. It is observed that the module efficiency increases with the inclination of the MF vector, indicating that the effect of the MF on the PV module is reduced when its vector aligns towards a direction that is perpendicular to the base of the module. For example, when α moves from 0 to 90°, the power output and consequently the efficiency of the PV module relatively increase of 14%.
- Published
- 2021
14. Effect of Reverse Polarisation of an Electromagnetic Field on the Performance of a Silicon PV Cell
- Author
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Vinci de Dieu Bokoyo Barandja, Martial Zoungrana, Bruno Korgo, Issa Zerbo, Dieudonné Joseph Bathiebo, Bernard Zouma, and Mamoudou Saria
- Subjects
Electromagnetic field ,Materials science ,Silicon ,Maximum power principle ,Article Subject ,business.industry ,General Engineering ,chemistry.chemical_element ,Magnitude (mathematics) ,02 engineering and technology ,021001 nanoscience & nanotechnology ,01 natural sciences ,Amplitude modulation ,Optics ,chemistry ,0103 physical sciences ,TA401-492 ,General Materials Science ,Power output ,0210 nano-technology ,business ,Materials of engineering and construction. Mechanics of materials ,010303 astronomy & astrophysics - Abstract
This paper investigated, by one-dimensional modelling, the effects of reverse polarisation of an electromagnetic field, generated by an amplitude modulation radio antenna, on the efficiency of a silicon PV cell. Through a simulation, the effects of both the incidence angle and the electromagnetic field magnitude on the power output of the PV cell are analyzed. The power output curves against the junction dynamic velocity are used to find the junction dynamic velocity at the equilibrium, the maximum power output, and the efficiency of the PV cell. The results have shown that the presence of important electromagnetic fields in the neighborhood of a silicon PV cell decreases its performance.
- Published
- 2020
- Full Text
- View/download PDF
15. Propagation of Electromagnetic Wave into an Illuminated Polysilicon PV Cell
- Author
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Issa Zerbo, Auguste Oscar Mackpayen, Vinci de Dieu Bokoyo Barandja, Martial Zoungrana, Dieudonné Joseph Bathiebo, and Bernard Zouma
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Materials science ,Article Subject ,020209 energy ,Astrophysics::High Energy Astrophysical Phenomena ,02 engineering and technology ,engineering.material ,01 natural sciences ,Electromagnetic radiation ,law.invention ,Optics ,law ,0103 physical sciences ,Solar cell ,Attenuation factor ,0202 electrical engineering, electronic engineering, information engineering ,Electrical and Electronic Engineering ,010303 astronomy & astrophysics ,Cellular telephone services industry. Wireless telephone industry ,business.industry ,Attenuation ,TK1-9971 ,Penetration length ,Polycrystalline silicon ,engineering ,HE9713-9715 ,Electrical engineering. Electronics. Nuclear engineering ,business ,Radio wave - Abstract
The increasing cohabitation between telecommunication antennas generating electromagnetic waves and solar panels poses the problem of interaction between these radio waves and solar cells. In order to study the effect of radio waves on the performance of a polycrystalline silicon solar cell in a three-dimensional approach, it is necessary to assess the attenuation of the radio wave in the illuminated polysilicon grain and also to find the expressions of its components. This work investigated the attenuation of radio waves into a polycrystalline silicon grain by analyzing, firstly, the behaviour of the penetration length of the radio waves into the polysilicon grain and secondly, the behaviour of the attenuation factor. The propagation of the radio waves into the polycrystalline silicon grain can be considered without attenuation that can be neglected.
- Published
- 2020
- Full Text
- View/download PDF
16. Diurnal Variability of the Radiative Impact of Atmospheric Aerosols in Ouagadougou, Burkina Faso: A Seasonal Approach
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Pétronille Kafando, Bernard Zouma, Bruno Korgo, Issa Zerbo, Martial Zoungrana, Nebon Bado, Joseph Dieudonné Bathiébo, Jean-Claude Roger, Université Joseph Ki-Zerbo [Ouagadougou] (UJZK), Department of Geographical Sciences [College Park], University of Maryland [College Park], University of Maryland System-University of Maryland System, NASA Goddard Space Flight Center (GSFC), Laboratoire de Météorologie Physique (LaMP), and Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Clermont Auvergne (UCA)
- Subjects
[PHYS]Physics [physics] ,Harmattan ,Albedo ,Radiative forcing ,Sunset ,Atmospheric sciences ,law.invention ,Atmosphere ,13. Climate action ,law ,[SDE]Environmental Sciences ,Radiative transfer ,Radiosonde ,Environmental science ,Sunrise ,ComputingMilieux_MISCELLANEOUS - Abstract
The objective of this work is to study the diurnal evolution of the radiative impact of atmospheric aerosols in an urban city located in the West African Sahel and the correlations with the main influencing factors of local climate dynamics. The simulation was performed using a treatment chain including the GAME code. In the methodology, the atmosphere is modeled by 33 plane parallel layers and the effects of absorption, multiple scattering by particles and gas are taken account. An hour-by-hour calculation of radiative forcing at the top of the atmosphere, in the atmospheric layer and at the earth’s surface was performed. The data used as input are the monthly averages of optical properties, radiosonde measurements, daily synoptic measurements and surface albedo. The results show a parabolic diurnal course of a negative radiative impact at the top of the atmosphere with an extremum at 12 o'clock. Maximum cooling is observed shortly after sunrise and shortly after sunset. The largest annual deviations are noted between the months of March and December with respective maximum cooling values of -34 W/m2 and -15.60 W/m2. On the earth’s surface, a cooling impact is observed with two diurnal peaks at sunrise and sunset, the greatest difference between the diurnal maximums is noted between March (-104.45 W/m2) and August (-54 W/m2). In the atmospheric layer, there is almost constant diurnal warming between 9 a.m. and 4 p.m. The maximum difference between the diurnal extremes is also noted between March (about 85 W/m2) and August (35 W/m2). Likewise, the study of the diurnal warming of the first atmospheric layer showed the extreme values in March (5.6°C) and August (2.4°C), these maximum values being always observed at around 12 o’clock. An analysis of similar works carried out in urban cities in various locations of the world has shown a relatively good accordance with the values obtained. This study highlights the radiative impact of Saharan desert dust, the effect of the local climate and the succession between dry season (November to May) and the rainy one (July to October), as well as the zenith solar angle and human activity.
- Published
- 2020
17. Effect of Incidence Angle Varying from 0 rad to π/2 rad and Intensity of Radio Waves on the Performance of a Silicon Solar Cell
- Author
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Dieudonné Joseph Bathiebo, Issa Zerbo, Mamoudou Saria, Martial Zoungrana, and Adama Ouedraogo
- Subjects
Materials science ,incidence angle ,lcsh:Mechanical engineering and machinery ,shunt resistance ,01 natural sciences ,lcsh:Technology ,lcsh:TD1-1066 ,Optics ,lcsh:Manufactures ,0103 physical sciences ,lcsh:TJ1-1570 ,0101 mathematics ,lcsh:Environmental technology. Sanitary engineering ,Silicon solar cell ,010308 nuclear & particles physics ,business.industry ,lcsh:T ,010102 general mathematics ,Energy conversion efficiency ,General Medicine ,radio waves ,Intensity (physics) ,solar cell ,lcsh:TA1-2040 ,business ,lcsh:Engineering (General). Civil engineering (General) ,lcsh:TS1-2301 ,Radio wave ,conversion efficiency - Abstract
In this work, a one dimensional approach is presented for modelling the effect of the incidence angle, varying from 0 rad to π/2 rad, and the intensity of radio waves on the performance of a polycrystalline silicon solar cell under constant multispectral illumination. By solving the continuity equation in steady state, we derived the expression of the density of excess minority carriers, the photocurrent density, the photovoltage, the electric power and their dependence on the incidence angle and the intensity of the electromagnetic field is analyzed. Using the electric power curves versus junction dynamic velocity we determined the electric power lost at the junction, the maximum electric power and we calculated the conversion efficiency for various incidence angle and intensity of the electromagnetic field. The leakage photocurrent density, deduced from the photocurrent density curves versus junction dynamic velocity, and the electric power lost at the junction allowed us to calculate the shunt resistance of the solar cell according to the incidence angle and the intensity of the electromagnetic field. The numerical data show the negative effect of radios waves on the performance of a silicon solar cell.
- Published
- 2017
18. Theoretical Study of Proton Radiation Influence on the Performance of a Polycrystalline Silicon Solar Cell
- Author
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Serge, Tchouadep Guy, primary, Bernard, Zouma, additional, Bruno, Korgo, additional, Boubacar, Soro, additional, Mahamadi, Savadogo, additional, Martial, Zoungrana, additional, and Issa, Zerbo, additional
- Published
- 2019
- Full Text
- View/download PDF
19. 3-D Modeling of Temperature Effect on a Polycrystalline Silicon Solar Cell under Intense Light Illumination
- Author
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Martial Zoungrana, Boubacar Soro, Mahamadi Savadogo, Issa Zerbo, and Dieudonné Joseph Bathiebo
- Subjects
Theory of solar cells ,Materials science ,Condensed matter physics ,business.industry ,Open-circuit voltage ,020209 energy ,Diffusion ,02 engineering and technology ,Electron ,engineering.material ,021001 nanoscience & nanotechnology ,law.invention ,Optics ,Polycrystalline silicon ,law ,Electric field ,Solar cell ,0202 electrical engineering, electronic engineering, information engineering ,engineering ,0210 nano-technology ,business ,Short circuit - Abstract
The efficiency of a silicon solar cell is directly linked to the quantity of carrier photogenerated in its base. It increases with the increase of the quantity of carrier in the base of the solar cell. The carrier density in the base of the solar cell increases with the increase of the flux of photons that crosses the solar cell. One of the methods used to increase the flux of photon on the illuminated side of the solar cell is the intensification of the illumination light. However, the intensification of the light come with the increase of the energy released by thermalization, the collision between carriers, their braking due to the carriers concentration gradient electric field which lead to increase the temperature in the base of the solar cell. This work presents a 3-D study, of the effect of the temperature on the electronic parameters of a polycrystalline silicon solar under intense light illumination. The electronic parameters on which we analyze the temperature effect are: the mobility of solar cell carriers (electrons and holes), their diffusion coefficient, their diffusion length and their distribution in the bulk of the base. To study the effect of the temperature on electronic parameters, we take into account, the dependence of carriers (electrons and holes) mobility with the temperature (μn,(T) μp(T)). Then, the resolution of the continuity equation,which is a function of the carriers gradient electric field and the carriers mobility, leads to the expressions of the diffusion coefficient, the diffusion length, and the density of carriers which are function of the temperature. Then, we studied the effects of the temperature on the diffusion parameters in order to explain their effect on the behavior the carriers distribution in intermediate, short circuit and open circuit operating modes at several positions in the base depth. It appears through this study that the diffusion coefficient and the diffusion length decrease with the increase of the temperature. We observe also that with the increase of the temperature, the density of carriers in the base of the solar cell in short circuit and open voltage operating modes increases. In intermediate operating mode, the density of carriers increases also with the temperature but it is function of the base depth.
- Published
- 2017
20. Modelling Study of Magnetic Field Effect on the Performance of a Silicon Photovoltaic Module
- Author
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Martial Zoungrana, Dioari Ulrich Combari, Issa Zerbo, Emmanuel Wendsongre Ramde, and Dieudonné Joseph Bathiebo
- Subjects
Photocurrent ,Engineering ,Equivalent series resistance ,business.industry ,020209 energy ,020208 electrical & electronic engineering ,Photovoltaic system ,Electrical engineering ,Physics::Optics ,02 engineering and technology ,Engineering physics ,law.invention ,Magnetic field ,Photovoltaic thermal hybrid solar collector ,Computer Science::Systems and Control ,law ,0202 electrical engineering, electronic engineering, information engineering ,Solar cable ,business ,Transformer ,Voltage - Abstract
Solar Photovoltaic is a very promising solution that can greatly contribute in solving the increasing global energy demand. In both rural and urban areas, photovoltaic modules are in some instances installed close to telecommunication antennas or voltage transformers which generate important magnetic fields in their vicinity. The question is whether or not these magnetic fields affect the performances of the photovoltaic installations. This article presents a modelling study of external magnetic field effect on the electrical parameters of a photovoltaic module. The photocurrent, the photovoltage, the electric power, the series and the shunt resistances of the photovoltaic module, made up of ideal cells, are deduced from those of a silicon solar cell. Then, the I-V and P-V curves are plotted and the theoretical values of the electrical parameters of the photovoltaic module are deduced. The series and shunt resistances of the photovoltaic module are calculated using well known equations and the previous electrical parameters. The results show the negative effect of magnetic field on the performance of a solar photovoltaic module.
- Published
- 2017
21. External Magnetic Field Effect on Bifacial Silicon Solar Cell’s Electrical Parameters
- Author
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Martial Zoungrana, Adama Ouedraogo, Dieudonné Joseph Bathiebo, Idrissa Sourabie, Issa Zerbo, and Bernard Zouma
- Subjects
Photocurrent ,Materials science ,business.industry ,020209 energy ,02 engineering and technology ,Power (physics) ,law.invention ,Magnetic field ,Optics ,Continuity equation ,law ,Solar cell ,0202 electrical engineering, electronic engineering, information engineering ,Electric power ,business ,Convection–diffusion equation ,Magneto - Abstract
The aim of this work is to present a theoretical study of external magnetic field effect on a bifacial silicon solar cell’s electrical parameters (peak power, fill factor and load resistance) using the J-V and P-V characteristics. After the resolution of the magneto transport equation and continuity equation of excess minority carriers in the base of the bifacial silicon solar cell under multispectral illumination, the photo-current density and the photovoltage are determined and the J-V and P-V curves are plotted. Using simultaneously the J-V and P-V curves, we determine, according to magnetic field intensity, the peak photocurrent density, the peak photovoltage, the peak electric power, the fill factor and the load resistance at the peak power point. The numerical data show that the solar cell’s peak power decreases with magnetic field intensity while the fill factor and the load resistance increase.
- Published
- 2016
22. Modelling Study of Magnetic Field’s Effects on Solar Cell’s Transient Decay
- Author
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Biram Dieng, Senghane Mbodji, Gregoire Sissoko, Martial Zoungrana, and Issa Zerbo
- Subjects
Recombination velocity ,Physics ,Steady state (electronics) ,equipment and supplies ,law.invention ,Magnetic field ,Nuclear magnetic resonance ,Continuity equation ,law ,Solar cell ,Transient (oscillation) ,Atomic physics ,human activities ,Voltage - Abstract
Experimental setup of transient decay which occurs between two steady state operating points is recalled. The continuity equation is resolved using both the junction dynamic velocity (Sf) and back side recombination velocity (Sb). The transient excess minority carriers density appears as the sum of infinite terms. Influence of magnetic field on the transient excess minority carriers density and transient photo voltage is studied and it is demonstrated that the use of this technique is valid only when the magnetic field is lower than 0.001 T.
- Published
- 2015
23. A 3D Modelling of Solar Cell’s Electric Power under Real Operating Point
- Author
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Martial Zoungrana, Senghane Mbodji, Biram Dieng, Mayoro Dieye, Gregoire Sissoko, and Issa Zerbo
- Subjects
Physics ,Photocurrent ,Operating point ,Theory of solar cells ,business.industry ,Computational physics ,law.invention ,Wavelength ,Optics ,Solar cell efficiency ,Continuity equation ,law ,Solar cell ,Electric power ,business - Abstract
This work, based on the junction recombination velocity (Sfu) concept, is used to study the solar cell’s electric power at any real operating point. Using Sfu and the back side recombination velocity (Sbu) in a 3D modelling study, the continuity equation is resolved. We determined the photocurrent density, the photovoltage and the solar cell’s electric power which is a calibrated function of the junction recombination velocity (Sfu). Plots of solar cell’s electric power with the junction recombination velocity give the maximum solar cell’s electric power, Pm. Influence of various parameters such as grain size (g), grain boundaries recombination velocity (Sgb), wavelength (λ) and for different illumination modes on the solar cell’s electric power is studied.
- Published
- 2015
24. External magnetic field effect on bifacial silicon solar cell's electric power and conversion efficiency
- Author
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Issa ZERBO, Martial ZOUNGRANA, Idrissa SOURABIE, Adama OUEDRAOGO, Bernard ZOUMA, and Dieudonné Joseph BATHIEBO
- Subjects
General Physics and Astronomy - Published
- 2015
25. A theoretical study of radio wave attenuation through a polycrystalline silicon solar cell
- Author
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Emmanuel Wendsongre Ramde, Issa Zerbo, Dieudonné Joseph Bathiebo, Vinci de Dieu Bokoyo Barandja, Martial Zoungrana, and Adama Ouedraogo
- Subjects
Electromagnetic field ,Attenuation,radio wave,polycrystalline silicon solar cell,equations of Maxwell,monochromatic illumination ,Materials science ,business.industry ,Attenuation ,010102 general mathematics ,General Physics and Astronomy ,020206 networking & telecommunications ,02 engineering and technology ,engineering.material ,01 natural sciences ,law.invention ,Magnetic field ,Computational physics ,Polycrystalline silicon ,Optics ,law ,Electric field ,Solar cell ,0202 electrical engineering, electronic engineering, information engineering ,engineering ,Grain boundary ,0101 mathematics ,business ,Radio wave - Abstract
One-dimensional study of both electronic and electrical parameters of a silicon solar cell in the presence or not of an electric field, a magnetic field, or an electromagnetic field does not take into account the grain size and the grain boundary recombination velocity. A three-dimensional study, on the contrary, takes those factors into account. However, the three-dimensional study poses the problem of the attenuation of the wave in the grain of the polycrystalline solar cell as well as the issue of finding the expressions of its components. This study aimed to solve these issues by considering radio waves, which are becoming more and more present in our environment via telecommunication masts. We first obtained the expressions of both the electric field and magnetic field in a grain of a polycrystalline silicon solar cell by solving the dispersion equation. Then we investigated the evolution of the radio wave into the grain by analyzing the behavior of the exponential coefficient that appeared in the expressions of both the electric field and the magnetic field. The study has shown that the attenuation of the radio wave can be neglected through the polycrystalline silicon solar grain and by extension through the polycrystalline silicon solar cell.
- Published
- 2017
26. Effect of junction quality on the performance of a silicon solar cell
- Author
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Martial Zoungrana, Adama Ouedraogo, Issa Zerbo, and Dieudonné Joseph Bathiebo
- Subjects
Photocurrent ,Efficiency ,Intrinsic junction recombination velocity ,Joule effect ,Solar cell ,Shunt resistance ,Theory of solar cells ,Materials science ,integumentary system ,Maximum power principle ,business.industry ,020209 energy ,010102 general mathematics ,Energy conversion efficiency ,02 engineering and technology ,Condensed Matter::Mesoscopic Systems and Quantum Hall Effect ,01 natural sciences ,law.invention ,Solar cell efficiency ,law ,Condensed Matter::Superconductivity ,0202 electrical engineering, electronic engineering, information engineering ,Optoelectronics ,Junction temperature ,Electric power ,0101 mathematics ,business - Abstract
In this work, a modeling study of the effect of the junction quality on the performance of a silicon solar cell is presented. Based on a one dimensional modeling of the solar cell, the continuity equation of excess minority carriers is solved with boundary conditions taking into account the intrinsic junction recombination velocity and led to analytical expressions of photocurrent density, photovoltage and electric power. The effect of the intrinsic junction recombination velocity or the solar cell junction quality on photocurrent, photovoltage and electric power, is exhibited and we determine the maximum electric power, the junction dynamic velocity at the maximum power point and the conversion efficiency according to the junction quality of the solar cell. From the electric power lost at the junction, we calculated the shunt resistance of the solar cell according to the junction quality.Keywords: Efficiency; Intrinsic junction recombination velocity; Joule effect; Solar cell; Shunt resistance
- Published
- 2017
27. Base Transceiver Station (BTS) Antenna Electric Field Influence on the Space Charge Region in a Silicon Solar Cell
- Author
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Martial Zoungrana, Ali Hamidou, M. Ndiaye, Senghane Mbodji, Abdourrahmane Diallo, Hawa Ly Diallo, Ali Moissi, and Gregoire Sissoko
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Photocurrent ,General Computer Science ,business.industry ,Chemistry ,General Engineering ,Electrical engineering ,Antenna factor ,Capacitance ,law.invention ,Depletion region ,law ,Electric field ,Solar cell ,Optoelectronics ,Antenna (radio) ,business ,Voltage - Abstract
In this study, we studied the influence of the electric field emitted by a BTS antenna on the space charge region of a silicon solar cell, placed at a distance r of the antenna. The drift diffusion recombination equation in presence of electric field has been established and the excess minority carries density is deduced. Based on the minority carries density, the space charge region extension, the photocurrent density, the photo voltage and the capacitance have been determined. The objective of his study is to show the effects of the electric field generated by a BTS antenna on the solar cell especially on the space charge region and its associated capacitance.
- Published
- 2014
28. Influence of Temperature on the Electrical Parameters of a Vertical Parallel Junction Silicon Solar Cell under Polychromatic Illumination in Steady State
- Author
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sup>Nfally Dieme, sup>Gregoire Sissoko, sup>Martial Zoungrana, sup>Senghane Mbodji, sup>Hawa Ly Diallo, sup>Fabe Idrissa Barro, and sup>Mor Ndiaye
- Subjects
Photocurrent ,Recombination velocity ,Operating point ,Diffusion equation ,Steady state (electronics) ,Materials science ,General Computer Science ,business.industry ,General Engineering ,law.invention ,law ,Solar cell ,Optoelectronics ,business ,Silicon solar cell - Abstract
This study presents a theoretical study of a vertical parallel junction solar cell under multispectral illumination in steady state. Based on the diffusion equation, the excess minority carrier's density is expressed and both photocurrent density and photovoltage are determined. For all these parameters we showed the effect of external temperature with respect to the operating point of the solar cell through the junction recombination velocity.
- Published
- 2014
29. Diffusion Coefficient in Silicon Solar Cell with Applied Magnetic Field and under Frequency: Electric Equivalent Circuits
- Author
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Gökhan Şahin, Martial Zoungrana, Gregoire Sissoko, Ndeye Thiam, Amadou Diao, and M. Ndiaye
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Materials science ,Nuclear magnetic resonance ,Condensed matter physics ,law ,Solar cell ,Equivalent circuit ,Diffusion current ,Diffusion (business) ,Haynes–Shockley experiment ,Diffusion capacitance ,Dielectric spectroscopy ,law.invention ,Magnetic field - Abstract
In this paper, a theory on the determination of the diffusion coefficient of excess minority carriers in the base of a silicon solar cell is presented. The diffusion coefficient expression has been established and is related to both frequency modulation and applied magnetic field; the study is then carried out using the impedance spectroscopy method and Bode diagrams. From the diffusion coefficient, we deduced the diffusion length and the minority carriers’ mobility. Electric parameters were derived from the diffusion coefficient equivalent circuits.
- Published
- 2014
30. Influence of Incident Illumination Angle on Capacitance of a Silicon Solar Cell under Frequency Modulation
- Author
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M. Sarr, Amary Thiam, Amadou Diao, Martial Zoungrana, Ndeye Thiam, H. Ly Diallo, Gregoire Sissoko, M. M. Deme, and S. Gueye
- Subjects
Materials science ,General Computer Science ,business.industry ,Bode plot ,General Engineering ,Condensed Matter::Mesoscopic Systems and Quantum Hall Effect ,Capacitance ,Diffusion capacitance ,law.invention ,Optics ,Illumination angle ,law ,Solar cell ,Nyquist plot ,business ,Electrical impedance ,Frequency modulation - Abstract
The aim of this study is to present a theoretical study of a silicon solar cell under frequency modulation. Solving the continuity equation lead to the analytical expressions of the minority carriers' density, the photocurrent and the photo voltage. The photocurrent and the photo voltage are plotted versus the modulation frequency in a semi-logarithmic scale for various incidence angles; the dynamic impedance of the solar cell is then derived. The Nyquist diagram of the impedance is plotted for various incidence angles, leading to the determination of the series and parallel resistances. The determination of the diffusion capacitance is also made based on the Bode diagram of the solar cell impedance. The influence of the modulation frequency and the incidence angle on the diffusion capacitance and the series and parallel resistances is then exhibited.
- Published
- 2013
31. THE EFFECT OF MAGNETIC FIELD ON THE EFFICIENCY OF A SILICON SOLAR CELL UNDER AN INTENSE LIGHT CONCENTRATION
- Author
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Martial, Zoungrana, primary, Issa, Zerbo, additional, Boubacar, Soro, additional, Mahamadi, Savadogo, additional, Sanna, Tiedrebeogo, additional, and Dieudonné Joseph, Bathiebo, additional
- Published
- 2017
- Full Text
- View/download PDF
32. Effect of light intensity on the performance of silicon solar cell
- Author
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Martial Zoungrana, Issa Zerbo, Sanna Tiedrebeogo, Dieudonné Joseph Bathiebo, Boubacar Soro, and Mahamadi Savadogo
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Theory of solar cells ,Materials science ,Equivalent series resistance ,business.industry ,020209 energy ,Energy conversion efficiency ,Light concentration, series resistance, shunt resistance, electric power, fill factor, Conversion efficiency ,02 engineering and technology ,021001 nanoscience & nanotechnology ,law.invention ,Light intensity ,Optics ,Solar cell efficiency ,law ,Solar cell ,0202 electrical engineering, electronic engineering, information engineering ,0210 nano-technology ,business ,Short circuit ,Shunt (electrical) - Abstract
This work, presents the intense light effect on electrical parameters of silicon solar such as short circuit current, open circuit voltage, series and shunt resistances, maximum power, conversion efficiency, fill factor. After the resolution of the continuity equation which leads to the solar cell photocurrent and photovoltage expressions, we use the J/V characteristic to determine the solar cell series and shunt resistances. The maximum electric power of the solar cell is determined using the curves of electric power versus junction dynamic velocity, and then, the fill factor and conversion efficiency are calculated. Light concentration and junction dynamic velocity effects on solar cell short circuit current, open circuit voltage, series and shunt resistances, electric power, fill factor and conversion efficiency are also studied. The study proved that with increase of illumination light intensity, the solar cell shunt resistances decreases whereas series resistance, short circuit current, open circuit voltage, electric power, fill factor and conversion efficiency increases. MARTIAL ZOUNGRANA, ISSA ZERBO, MAHAMADI SAVADOGO, SANNA TIEDREBEOGO, BOUBACAR SORO AND DIEUDONNE JOSEPH BATHIEBO
- Published
- 2017
33. Influence of electromagnetic waves produced by an amplitude modulation radio antenna on the electric power delivered by a silicon solar cell
- Author
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B. Zouma, B. Korgo, Martial Zoungrana, A. Ouedraogo, Dieudonné Joseph Bathiebo, and Issa Zerbo
- Subjects
Electromagnetic field ,Physics ,business.industry ,Antenna aperture ,Near and far field ,Electromagnetic radiation ,Wavelength ,Optics ,1- Amplitude modulation, 2- Radio antenna, 3- Electromagnetic waves, 4- Monochromatic illumination, 5- Solar cell ,Optoelectronics ,Antenna (radio) ,business ,Radio wave ,Electromagnetic pulse - Abstract
This article presents a one dimensional modeling of the influence of electromagnetic waves on the electric power delivered by a silicon solar cell under monochromatic illumination in steady state. The electromagnetic waves are produced by an amplitude modulation radio antenna of 2MW power of radiation and located at a variable distance of the solar cell [10m,+∞[. The magnetotransport and continuity equations of excess minority carriers are solved with boundary conditions and led to new analytical expressions of minority carrier’s density, photocurrent density, photovoltage and electric power depending on electromagnetic field intensity and wavelength λ. The dependence of the electromagnetic field and the incident light wavelength on photocurrent density, photovoltage and electric power is studied. The intensity of the electromagnetic field depends on the distance between the solar cell and the amplitude modulation radio antenna. We determine the peak power and the operating point of the solar cell according to distance or electromagnetic field intensity and also according to the wavelength of the monochromatic light. KEYWORDS : 1- Amplitude modulation, 2- Radio antenna, 3- Electromagnetic waves, 4- Monochromatic illumination, 5- Solar cell
- Published
- 2014
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