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Titre : Techniques de commande avancées de la machine asynchrone : étude comparative et applications Type de document : texte imprimé Auteurs : Salah Eddine Rezgui, Auteur ; Hocine Benalla, Directeur de thèse Editeur : Constantine : Université Mentouri Constantine Année de publication : 2015 Importance : 206 f. Format : 30 cm. Note générale : 2 copies imprimées disponibles
Langues : Français (fre) Catégories : Français - Anglais
Electro-techniqueTags : Commande par mode glissant avancée comparaison réseau de neurones estimation en-ligne
des paramètres commande sans capteurs dSPACE liding mode advanced control comparison artificial neural network on-line parameters
estimation sensorless control تحكم متقدمبالنمط الانزلاقي مقارنة بين أنواع التحكم الشبكة العصبية الاصطناعية تقدير البارمترات على المباشر تحكم بدون ملتقطاتIndex. décimale : 622 Electro-Technique Résumé : The aim of this work was carried on the experimental comparison of the performance of field oriented vector control and DTC control, and to develop control and observation algorithms with conjoint on-line estimation of the induction motor (IM) parameters, taking into consideration the constraints imposed by the practical realization. We took a special interest to the experimental test-bed as it is an essential step for validating each new control law design.
A theoretical study is devoted to the basic concepts of variable structure systems with sliding mode, and after describing the conventional method, we proceeded to the synthesis of control law that is based on exponential reaching phase (ERL) to achieve more robustness of the system even at transients and to improve its dynamic response.
At the end, a new sensorless control by MRAS with an on-line conjoint estimation of the IM parameters using artificial neural networks is developed. To do so, we proceed with a theoretical study of the MRAS technique evoking its different methods. Then we continue with the process of estimating the IM parameters espacially the stator resistance and the inverse of the rotor time constant using the concept of Popov’s hyperstability. After describing the principles of neural networks and their application to our case in the estimation of the parameters we go further to the practice implementation and interpretation of results.
Diplôme : Doctorat en sciences En ligne : ../theses/electrotec/REZ6753.pdf Format de la ressource électronique : Permalink : index.php?lvl=notice_display&id=9862 Techniques de commande avancées de la machine asynchrone : étude comparative et applications [texte imprimé] / Salah Eddine Rezgui, Auteur ; Hocine Benalla, Directeur de thèse . - Constantine : Université Mentouri Constantine, 2015 . - 206 f. ; 30 cm.
2 copies imprimées disponibles
Langues : Français (fre)
Catégories : Français - Anglais
Electro-techniqueTags : Commande par mode glissant avancée comparaison réseau de neurones estimation en-ligne
des paramètres commande sans capteurs dSPACE liding mode advanced control comparison artificial neural network on-line parameters
estimation sensorless control تحكم متقدمبالنمط الانزلاقي مقارنة بين أنواع التحكم الشبكة العصبية الاصطناعية تقدير البارمترات على المباشر تحكم بدون ملتقطاتIndex. décimale : 622 Electro-Technique Résumé : The aim of this work was carried on the experimental comparison of the performance of field oriented vector control and DTC control, and to develop control and observation algorithms with conjoint on-line estimation of the induction motor (IM) parameters, taking into consideration the constraints imposed by the practical realization. We took a special interest to the experimental test-bed as it is an essential step for validating each new control law design.
A theoretical study is devoted to the basic concepts of variable structure systems with sliding mode, and after describing the conventional method, we proceeded to the synthesis of control law that is based on exponential reaching phase (ERL) to achieve more robustness of the system even at transients and to improve its dynamic response.
At the end, a new sensorless control by MRAS with an on-line conjoint estimation of the IM parameters using artificial neural networks is developed. To do so, we proceed with a theoretical study of the MRAS technique evoking its different methods. Then we continue with the process of estimating the IM parameters espacially the stator resistance and the inverse of the rotor time constant using the concept of Popov’s hyperstability. After describing the principles of neural networks and their application to our case in the estimation of the parameters we go further to the practice implementation and interpretation of results.
Diplôme : Doctorat en sciences En ligne : ../theses/electrotec/REZ6753.pdf Format de la ressource électronique : Permalink : index.php?lvl=notice_display&id=9862 Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité REZ/6753 REZ/6753 Thèse Bibliothèque principale Thèses Disponible Etude et modélisation de deux distillateurs solaires symétrique et asymétrique à effet de serre / Abderachid Trad
Titre : Etude et modélisation de deux distillateurs solaires symétrique et asymétrique à effet de serre Type de document : texte imprimé Auteurs : Abderachid Trad, Auteur ; Abdenacer Kaabi, Directeur de thèse Editeur : constantine [Algérie] : Université Constantine 1 Année de publication : 2014 Importance : 242 f. Format : 30 cm. Note générale : 2 copies imprimées disponibles
Langues : Français (fre) Catégories : Français - Anglais
Génie ClimatiqueTags : Distillateur solaire orientation comparaison Productivité Solar still Orientation Comparison Productivity جهاز التقطير الإتجاه المقارنة الإنتاجية Index. décimale : 626 Génie Climatique Résumé : A computer program has been developed to simulate the effect of the orientations (east– west and south–north), on the performance of a symmetric double slope solar still compared to those of an asymmetric solar still with a double effect, in order to obtain the optimum design parameters for both types, under climatic conditions of Constantine (Eastern area of Algeria), using meteorological data of 1st August of 2005 as the hottest day selected from the
last decade (2002–2012). The obtained results show that10° is the optimum inclination angle that allows receiving a maximum solar radiation for both stills by increasing the evaporation condensation processes. A water depth of 0.02 m gives higher daily production. The stability of solar radiation seen in a south–north orientation leads to high reception of solar radiation by both stills.The coefficient of heat transfer by evaporation has contributed in major in the production of solar stills (70%), followed by the coefficient of heat transfer by radiation (23%), and the left is for the heat transfer by convection (7%). The practical limit of optimal insulation thickness that gives the maximum efficiency of the two systems of distillation is about 0.10 m. As a consequence, the daily productivity of an asymmetric still, with a double effect process is found higher than that corresponding to the symmetric one with a double slope system, and where at the south–north orientation we notice an increase of 22.57% and at the east–west orientation it is of 16.23%. It is shown also that a south–north orientation enhances the performance of the asymmetric still with a double effect by 16.76%.
Diplôme : Doctorat en sciences En ligne : ../theses/gclim/TRA6716.pdf Format de la ressource électronique : Permalink : index.php?lvl=notice_display&id=9907 Etude et modélisation de deux distillateurs solaires symétrique et asymétrique à effet de serre [texte imprimé] / Abderachid Trad, Auteur ; Abdenacer Kaabi, Directeur de thèse . - constantine [Algérie] : Université Constantine 1, 2014 . - 242 f. ; 30 cm.
2 copies imprimées disponibles
Langues : Français (fre)
Catégories : Français - Anglais
Génie ClimatiqueTags : Distillateur solaire orientation comparaison Productivité Solar still Orientation Comparison Productivity جهاز التقطير الإتجاه المقارنة الإنتاجية Index. décimale : 626 Génie Climatique Résumé : A computer program has been developed to simulate the effect of the orientations (east– west and south–north), on the performance of a symmetric double slope solar still compared to those of an asymmetric solar still with a double effect, in order to obtain the optimum design parameters for both types, under climatic conditions of Constantine (Eastern area of Algeria), using meteorological data of 1st August of 2005 as the hottest day selected from the
last decade (2002–2012). The obtained results show that10° is the optimum inclination angle that allows receiving a maximum solar radiation for both stills by increasing the evaporation condensation processes. A water depth of 0.02 m gives higher daily production. The stability of solar radiation seen in a south–north orientation leads to high reception of solar radiation by both stills.The coefficient of heat transfer by evaporation has contributed in major in the production of solar stills (70%), followed by the coefficient of heat transfer by radiation (23%), and the left is for the heat transfer by convection (7%). The practical limit of optimal insulation thickness that gives the maximum efficiency of the two systems of distillation is about 0.10 m. As a consequence, the daily productivity of an asymmetric still, with a double effect process is found higher than that corresponding to the symmetric one with a double slope system, and where at the south–north orientation we notice an increase of 22.57% and at the east–west orientation it is of 16.23%. It is shown also that a south–north orientation enhances the performance of the asymmetric still with a double effect by 16.76%.
Diplôme : Doctorat en sciences En ligne : ../theses/gclim/TRA6716.pdf Format de la ressource électronique : Permalink : index.php?lvl=notice_display&id=9907 Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité TRA/6716 TRA/6716 Thèse Bibliothèque principale Thèses Disponible
