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Partager le résultat de cette recherche Interroger des sources externesAmélioration du rendement des cellules solaires organiques à base de polymères conjugués. / Fathi Brioua
Titre : Amélioration du rendement des cellules solaires organiques à base de polymères conjugués. Type de document : texte imprimé Auteurs : Fathi Brioua, Auteur ; Mohamed Remram, Directeur de thèse Editeur : جامعة الإخوة منتوري قسنطينة Année de publication : 2018 Importance : 95 f. Format : 30 cm. Note générale : 2 copies imprimées disponibles
Langues : Français (fre) Catégories : Français - Anglais
ElectroniqueTags : Cellule solaire organique P3HT:PCBM semi-conducteurs inorganique coefficient
d'absorption taux de génération méthode des éléments finis Organic solar cell P3HT: PCBM inorganic semiconductors absorption coefficient generation rate finite element method الخلایا الشمسیة العضویة أشباه الموصلات غیر العضویة معامل الامتصاص معدل التولید طریقة
العناصر المحدودة .P3HT:PCBIndex. décimale : 621 Electronique Résumé : Research on organic solar cells based on semiconductors has a great interest, because this type of cells has very interesting properties, particularly in their flexibility, and the possibility of being made with large areas, compared to inorganic solar cells.In this contribution, we are interested to study the effect of the structure geometry of these cells, precisely the influence of the active layer thickness on the efficiency of these cells which is based on the use of interpenetrating network materials (P3HT: PCBM) of bulk-heterojunction solar cells. In a first phase, the electrical characteristics can be calculated and explored by a optical study consecrated to explore the optical properties of these cells such as the absorption coefficient and the generation rate that govern the absorption properties of the solar cell and based on the latter coefficients in conjunction of the experimental data, we calculated the charge carriers motilities into the active layer. In the second phase, we made another study on the effect of the electric charges recombination into the active layer (P3HT:PCBM) in order to know the probability of the carriers of the charges recombination in vicinity of the donor / acceptor interface for each studied micro device, everything was done by the solar cell simulator (Comsol Multiphysics) that based on the finite element method. The final phase is consecrated for the comparison of our new obtained results with both numerical and experimental approaches provided by the literature in order to validate our proposed approach.
Diplôme : Doctorat Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=10992 Amélioration du rendement des cellules solaires organiques à base de polymères conjugués. [texte imprimé] / Fathi Brioua, Auteur ; Mohamed Remram, Directeur de thèse . - جامعة الإخوة منتوري قسنطينة, 2018 . - 95 f. ; 30 cm.
2 copies imprimées disponibles
Langues : Français (fre)
Catégories : Français - Anglais
ElectroniqueTags : Cellule solaire organique P3HT:PCBM semi-conducteurs inorganique coefficient
d'absorption taux de génération méthode des éléments finis Organic solar cell P3HT: PCBM inorganic semiconductors absorption coefficient generation rate finite element method الخلایا الشمسیة العضویة أشباه الموصلات غیر العضویة معامل الامتصاص معدل التولید طریقة
العناصر المحدودة .P3HT:PCBIndex. décimale : 621 Electronique Résumé : Research on organic solar cells based on semiconductors has a great interest, because this type of cells has very interesting properties, particularly in their flexibility, and the possibility of being made with large areas, compared to inorganic solar cells.In this contribution, we are interested to study the effect of the structure geometry of these cells, precisely the influence of the active layer thickness on the efficiency of these cells which is based on the use of interpenetrating network materials (P3HT: PCBM) of bulk-heterojunction solar cells. In a first phase, the electrical characteristics can be calculated and explored by a optical study consecrated to explore the optical properties of these cells such as the absorption coefficient and the generation rate that govern the absorption properties of the solar cell and based on the latter coefficients in conjunction of the experimental data, we calculated the charge carriers motilities into the active layer. In the second phase, we made another study on the effect of the electric charges recombination into the active layer (P3HT:PCBM) in order to know the probability of the carriers of the charges recombination in vicinity of the donor / acceptor interface for each studied micro device, everything was done by the solar cell simulator (Comsol Multiphysics) that based on the finite element method. The final phase is consecrated for the comparison of our new obtained results with both numerical and experimental approaches provided by the literature in order to validate our proposed approach.
Diplôme : Doctorat Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=10992 Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité BRI/7342 BRI/7342 Thèse Bibliothèque principale Thèses Disponible 
Titre : Performances comparées de machines synchrones à aimants permanents et à réluctance variable associées à une chaine de conversion d'energie renouvelable Type de document : texte imprimé Auteurs : Abdelkadir Lebsir, Auteur ; Ammar Bentounsi, Directeur de thèse ; Mohamed Benbouzid, Directeur de thèse Editeur : جامعة الإخوة منتوري قسنطينة Année de publication : 2016 Importance : 109 f. Format : 30 cm. Note générale : 2 copies imprimées disponibles
Langues : Français (fre) Catégories : Français - Anglais
Electro-techniqueTags : imensionnement aérogénérateur éolienne à attaque directe machine synchrone à aimants
permanents machine à réluctance variable performances méthode éléments finis design wind turbine direct drive permanent magnet synchronous machine switched reluctance
machine finite element method FEMM MATLAB تصميم توربينات الرياح تدوير مباشر آلة متزامن ذو مغناطيس دائم محرك كهربائي ذو ممانعة متغيرة طريقة العناصر المحدودة
ماتلاب فييمIndex. décimale : 622 Electro-Technique Résumé :
This thesis aims to: study, design and comparison of innovative generators adapted to the conversion of renewable energies, especially wind power in a direct drive. From a power (1.5 MW) and speed (1.55 rad / s) data given, we are dimensioned analytically two innovative topologies of machines to associate with a wind turbine with high power without gearbox.
The first topology is a Permanent Magnets Synchronous Machine with Low Speed (PMSMLS) and the second topology is an innovative generator for wind turbine that is the Switched Reluctance Machine with Low Speed (SRMLS), therefore, with large diameters. Start by an analytical model, we calculated the main dimensions of PMSMLS and the SRMLS and simulated operation of the generators from a numerical approach based on the finite element method.
Eventually, we performed a comparatives analysis of design equations, volumes, weights and costs of two different topologies of wind turbines generators studied (PMSMLS and the SRMLS).
Our work was mainly focused on the permanent magnet generator because this machine seems to be the most cost effective and most widely used in recent years. However, thanks to developments made in different areas and with the high cost of the magnets, the switched reluctance generator interests more researchers and industry for wind generators applications.Diplôme : Doctorat En ligne : ../theses/electrotec/LEB6905.pdf Format de la ressource électronique : Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=10237 Performances comparées de machines synchrones à aimants permanents et à réluctance variable associées à une chaine de conversion d'energie renouvelable [texte imprimé] / Abdelkadir Lebsir, Auteur ; Ammar Bentounsi, Directeur de thèse ; Mohamed Benbouzid, Directeur de thèse . - جامعة الإخوة منتوري قسنطينة, 2016 . - 109 f. ; 30 cm.
2 copies imprimées disponibles
Langues : Français (fre)
Catégories : Français - Anglais
Electro-techniqueTags : imensionnement aérogénérateur éolienne à attaque directe machine synchrone à aimants
permanents machine à réluctance variable performances méthode éléments finis design wind turbine direct drive permanent magnet synchronous machine switched reluctance
machine finite element method FEMM MATLAB تصميم توربينات الرياح تدوير مباشر آلة متزامن ذو مغناطيس دائم محرك كهربائي ذو ممانعة متغيرة طريقة العناصر المحدودة
ماتلاب فييمIndex. décimale : 622 Electro-Technique Résumé :
This thesis aims to: study, design and comparison of innovative generators adapted to the conversion of renewable energies, especially wind power in a direct drive. From a power (1.5 MW) and speed (1.55 rad / s) data given, we are dimensioned analytically two innovative topologies of machines to associate with a wind turbine with high power without gearbox.
The first topology is a Permanent Magnets Synchronous Machine with Low Speed (PMSMLS) and the second topology is an innovative generator for wind turbine that is the Switched Reluctance Machine with Low Speed (SRMLS), therefore, with large diameters. Start by an analytical model, we calculated the main dimensions of PMSMLS and the SRMLS and simulated operation of the generators from a numerical approach based on the finite element method.
Eventually, we performed a comparatives analysis of design equations, volumes, weights and costs of two different topologies of wind turbines generators studied (PMSMLS and the SRMLS).
Our work was mainly focused on the permanent magnet generator because this machine seems to be the most cost effective and most widely used in recent years. However, thanks to developments made in different areas and with the high cost of the magnets, the switched reluctance generator interests more researchers and industry for wind generators applications.Diplôme : Doctorat En ligne : ../theses/electrotec/LEB6905.pdf Format de la ressource électronique : Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=10237 Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité LEB/6905 LEB/6905 Thèse Bibliothèque principale Thèses Disponible
Titre : Modélisation numérique du comportement mécanique des jonctions tubulaires soudées des plateformes offshore. Type de document : texte imprimé Auteurs : Samira Belhour, Auteur ; Ahmed Bellaouar, Directeur de thèse Mention d'édition : 24\02\2021 Editeur : جامعة الإخوة منتوري قسنطينة Année de publication : 2021 Importance : 122 f. Format : 30 cm. Note générale : 1 copies imprimées disponibles
Langues : Français (fre) Catégories : Français - Anglais
Génie MécaniqueTags : G. Mécanique: Construction mécanique méthode des éléments finis facteur d’intensité de contrainte modélisation numérique plateforme
offshore joints tubulaire joint soudés fatigue des structures éléments Shell finite element method stress intensity factor numerical modeling offshore platform tubular joints welded joints fatigue of offshore structures Shell elements طريقة العناصر المحدودة عامل شدة الإجهاد النمذجة العددية المنصة البحرية المفاصل الأنبوبية المفاصل
الملحومة التعب الهيكلي عناصر شاIndex. décimale : 620 Génie Mécanique Résumé :
Tubular steel structures are widely used in the construction of offshore platforms; several types of junctions are used in this field. The tubular members are assembled by welding, thus forming complex brace/chord intersections which represent structural discontinuities leading to high stress concentration in the vicinity of the weld bead. These joints are subjected to repeated loading over time leading to fatigue damage, hence the need to predict stresses around welded intersections. It is with this in mind that a numerical modeling of the mechanical behavior was carried out using two software programs ANSYS, and COMSOLMULTIPHYSICS. A numerical modeling in 2D with thin Shell elements and 3D with 20 Nodes solid elements was carried out by applying three basic loadings axial loading AX, in-plane bending “IPB”, out-of-plane bending “OPB” and a combined loading COM, aiming to predict the concentrations of stresses around the weld bead area. The results obtained show that for the three types of loadings AX, OPB and COM; the maximum stresses are located at saddle point However, for IPB loading they are located in a position between the two crown and saddle points. A parametric study was also performed to analyze the effect of the dimensionless geometric parameters α, , , β, . The results of SCf are validated by the parametric equations.
Note de contenu :
Annexes.Diplôme : Doctorat en sciences En ligne : ../theses/gmecanique/BEL7749.pdf Format de la ressource électronique : Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=11582 Modélisation numérique du comportement mécanique des jonctions tubulaires soudées des plateformes offshore. [texte imprimé] / Samira Belhour, Auteur ; Ahmed Bellaouar, Directeur de thèse . - 24\02\2021 . - جامعة الإخوة منتوري قسنطينة, 2021 . - 122 f. ; 30 cm.
1 copies imprimées disponibles
Langues : Français (fre)
Catégories : Français - Anglais
Génie MécaniqueTags : G. Mécanique: Construction mécanique méthode des éléments finis facteur d’intensité de contrainte modélisation numérique plateforme
offshore joints tubulaire joint soudés fatigue des structures éléments Shell finite element method stress intensity factor numerical modeling offshore platform tubular joints welded joints fatigue of offshore structures Shell elements طريقة العناصر المحدودة عامل شدة الإجهاد النمذجة العددية المنصة البحرية المفاصل الأنبوبية المفاصل
الملحومة التعب الهيكلي عناصر شاIndex. décimale : 620 Génie Mécanique Résumé :
Tubular steel structures are widely used in the construction of offshore platforms; several types of junctions are used in this field. The tubular members are assembled by welding, thus forming complex brace/chord intersections which represent structural discontinuities leading to high stress concentration in the vicinity of the weld bead. These joints are subjected to repeated loading over time leading to fatigue damage, hence the need to predict stresses around welded intersections. It is with this in mind that a numerical modeling of the mechanical behavior was carried out using two software programs ANSYS, and COMSOLMULTIPHYSICS. A numerical modeling in 2D with thin Shell elements and 3D with 20 Nodes solid elements was carried out by applying three basic loadings axial loading AX, in-plane bending “IPB”, out-of-plane bending “OPB” and a combined loading COM, aiming to predict the concentrations of stresses around the weld bead area. The results obtained show that for the three types of loadings AX, OPB and COM; the maximum stresses are located at saddle point However, for IPB loading they are located in a position between the two crown and saddle points. A parametric study was also performed to analyze the effect of the dimensionless geometric parameters α, , , β, . The results of SCf are validated by the parametric equations.
Note de contenu :
Annexes.Diplôme : Doctorat en sciences En ligne : ../theses/gmecanique/BEL7749.pdf Format de la ressource électronique : Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=11582 Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité BEL/7749 BEL/7749 Thèse Bibliothèque principale Thèses Disponible
Titre : Modélisation nanothermique des systèmes Thermo/Photovoltaïques Applications aux collecteurs hybrides PVT Type de document : texte imprimé Auteurs : Hanane Ben Cheikh El houcine, Auteur ; Khaled Touafek, Directeur de thèse ; Fouad Kerrour, Directeur de thèse Editeur : جامعة الإخوة منتوري قسنطينة Année de publication : 2017 Importance : 129 f. Format : 30 cm. Note générale : 2 copies imprimées disponibles
Langues : Français (fre) Catégories : Français - Anglais
ElectroniqueTags : Composants Electroniques et systèmes Module PV photovoltaique Thermique Photovoltaique-thermique PVT méthode des élements finis COMSOL Rendement PV module photovoltaic Thermal Photovoltaic-thermal PVT finite element method Efficiency وحدة الكھروضوئیة الكھروضوئي النظام الحراري النظام الھجین (PVT ) طریقة العناصر
المحددة المردودIndex. décimale : 621 Electronique Résumé : The PVT coupling is to combine a photovoltaic (PV) to a thermal heating system (heat sensor), such a system allows to improve the efficiency of the PV module (negative effect of decreased temperature) while extracting heat calories useful heating.
The objective of this study was to evaluate the energy performance of a new hybrid photovoltaic thermal sensor (PV/T) based on a new configuration of the absorber developed within the Unit for Applied Renewable Energy. The study is done as follows; modeling the energy performance of the hybrid prototype MATLAB in one dimension in dynamic mode.
And seen to predict the performance of the system in real conditions a digital 3D simulation with commercial software has been implemented, our choice fell on the Comsol Multiphysics software.
Model validation was performed experimentally; the simulation results are in good agreement with experimental measurements. The advantage of such a structure is the simplicity of implementation by contribution to the model of PV/T tube and energy saving improvement comparing to that in the model PV/T vessel, not to mention the lower cost resulting from the use of galvanizing steel in the manufacture of the absorber compared to copper.
A numerical approach of a second new configuration of PV/T hybrid collector was established under COMSOL to confirm the feasibility of such a design. From the simulation results, we find that this second PVT configuration can effectively reduce the temperature of the photovoltaic module and consequently improve the electrical performance.
Diplôme : Doctorat en sciences En ligne : ../theses/electronique/BEN6993.pdf Format de la ressource électronique : Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=10401 Modélisation nanothermique des systèmes Thermo/Photovoltaïques Applications aux collecteurs hybrides PVT [texte imprimé] / Hanane Ben Cheikh El houcine, Auteur ; Khaled Touafek, Directeur de thèse ; Fouad Kerrour, Directeur de thèse . - جامعة الإخوة منتوري قسنطينة, 2017 . - 129 f. ; 30 cm.
2 copies imprimées disponibles
Langues : Français (fre)
Catégories : Français - Anglais
ElectroniqueTags : Composants Electroniques et systèmes Module PV photovoltaique Thermique Photovoltaique-thermique PVT méthode des élements finis COMSOL Rendement PV module photovoltaic Thermal Photovoltaic-thermal PVT finite element method Efficiency وحدة الكھروضوئیة الكھروضوئي النظام الحراري النظام الھجین (PVT ) طریقة العناصر
المحددة المردودIndex. décimale : 621 Electronique Résumé : The PVT coupling is to combine a photovoltaic (PV) to a thermal heating system (heat sensor), such a system allows to improve the efficiency of the PV module (negative effect of decreased temperature) while extracting heat calories useful heating.
The objective of this study was to evaluate the energy performance of a new hybrid photovoltaic thermal sensor (PV/T) based on a new configuration of the absorber developed within the Unit for Applied Renewable Energy. The study is done as follows; modeling the energy performance of the hybrid prototype MATLAB in one dimension in dynamic mode.
And seen to predict the performance of the system in real conditions a digital 3D simulation with commercial software has been implemented, our choice fell on the Comsol Multiphysics software.
Model validation was performed experimentally; the simulation results are in good agreement with experimental measurements. The advantage of such a structure is the simplicity of implementation by contribution to the model of PV/T tube and energy saving improvement comparing to that in the model PV/T vessel, not to mention the lower cost resulting from the use of galvanizing steel in the manufacture of the absorber compared to copper.
A numerical approach of a second new configuration of PV/T hybrid collector was established under COMSOL to confirm the feasibility of such a design. From the simulation results, we find that this second PVT configuration can effectively reduce the temperature of the photovoltaic module and consequently improve the electrical performance.
Diplôme : Doctorat en sciences En ligne : ../theses/electronique/BEN6993.pdf Format de la ressource électronique : Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=10401 Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité BEN/6993 BEN/6993 Thèse Bibliothèque principale Thèses Disponible
