Download or read book D termination par simulation de lois de commandes optimales d un moteur asynchrone written by Kamal Moumen (auteur d'une thèse de sciences.) and published by . This book was released on 1980 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Commande structure variable appliqu e un moteur asynchrone written by Daniela Mitzova and published by . This book was released on 1994 with total page 217 pages. Available in PDF, EPUB and Kindle. Book excerpt: CETTE ETUDE DEFINIT DES LOIS DE COMMANDE A STRUCTURE VARIABLE APPLIQUEES A UN MOTEUR ASYNCHRONE. LA COMMANDE A STRUCTURE VARIABLE (CSV) EST UNE COMMANDE NON LINEAIRE QUI POSSEDE LA PROPRIETE DE ROBUSTESSE. ELLE EST BASEE SUR LA COMMUTATION DES FONCTIONS DE VARIABLES D'ETAT, UTILISEES POUR CREER UNE VARIETE OU HYPERSURFACE DE GLISSEMENT, DONT LE BUT EST DE FORCER LA DYNAMIQUE DU SYSTEME A CORRESPONDRE AVEC CELLE DEFINIE PAR L'EQUATION DE L'HYPERSURFACE. QUAND L'ETAT EST MAINTENU SUR CETTE HYPERSURFACE, LE SYSTEME SE TROUVE EN REGIME GLISSANT ET IL EST INSENSIBLE AUX VARIATIONS DES PARAMETRES DU PROCESSUS, AUX ERREURS DE MODELISATION ET A CERTAINES PERTURBATIONS. L'ETUDE PRESENTEE CONCERNE L'ASSERVISSEMENT DE FLUX, DE COUPLE, DE VITESSE ET DE POSITION D'UN MOTEUR ASYNCHRONE DONT LE MODELE DE COMMANDE EST ISSU DE LA METHODE DE COMMANDE VECTORIELLE PAR CHAMP ORIENTE. LES REPONSES DU SYSTEME AVEC LA CSV SONT COMPAREES A CELLES OBTENUES AVEC UNE COMMANDE DE TYPE PROPORTIONNEL-INTEGRAL CLASSIQUE ET AMELIOREE PAR PREDICTION ET COMMANDE MIXTE BOUCLE OUVERTE BOUCLE FERMEE, CECI POUR DIFFERENTES CONDITIONS DE FONCTIONNEMENT: POUR DIVERSES CONSIGNES DE VITESSE, DE POSITIONS ET DE CHARGE, EN PRESENCE DE PERTURBATIONS PROVOQUEES PAR DES VARIATIONS PARAMETRIQUES TYPIQUES, PAR LES TEMPS MORTS DE L'ONDULEUR ET PAR LES DEFAUTS DES CAPTEURS. TOUS LES ESSAIS SONT EFFECTUES EN SIMULATION NUMERIQUE A L'AIDE DU LOGICIEL POSTMAC EN VUE D'UNE FUTURE REALISATION. POSTMAC EST ELABORE AU LABORATOIRE D'ELECTROTECHNIQUE ET ELECTRONIQUE INDUSTRIELLE DE L'ENSEEIHT
Download or read book D veloppement de lois de commandes avec observateurs pour machine asynchrone written by Ricardo Alvarez Salas and published by . This book was released on 2007 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ce travail s'inscrit dans le cadre général de l'observation et de la commande non linéaire de machine asynchrone. Ce mémoire comporte cinq volets. La première partie donne les éléments de modélisation de la machine asynchrone ainsi que sa représentation dans différentes repères de coordonnées. La deuxième partie est dédiée aux observateurs de flux et de couple de charge pour machine asynchrone en vue de bonnes performances dans toute la gamme de vitesse. Nous présentons deux méthodes de synthèse d'observateurs différentes : modes glissants et grand gain de type cascade. La troisième partie est consacrée à la commande; nous nous intéressons plus particulièrement à la commande par modes glissants que nous appliquons au modèle de la machine asynchrone. Dans la quatrième partie, nous effectuons une analyse comparative de quelques lois de commande non linéaires dans le cadre d'un "benchmark" sur un modèle de machine de asynchrone, proposé à la communauté internationale. Nous présentons des résultats de simlation réalistes à l'aide d'un environnement de simulation spécialisé. Le dernier point concerne la partie expérimentale de l'étude. Nous présentons le banc d'essai du Laboratoire d'Automatique de Grenoble, plate-forme semi-industrielle de machine asynchrone. Nous détaillons ensuite l'évaluation expérimentale des observateurs et de certaines lois de commandes proposées, en vue d'une analyse comparative de leurs performances respectives.
Download or read book Commande directe en couple d une machine asynchrone written by Jamel Belhadj and published by . This book was released on 2001 with total page 195 pages. Available in PDF, EPUB and Kindle. Book excerpt: L'objectif de ce travail est le développement d'une structure d'observation des variables de commande du Contrôle Direct du Couple (DTC) d'une machine asynchrone. Cette structure doit résoudre un dilemne de robustesse et de temps de calcul minimal. La loi de commande obtenue sera utilisée pour la commande multimachines-multiconvertisseurs. Dans ce mémoire, l'auteur a tout d'abord étudié les nouvelles lois de commande dites à contrôle direct du flux statorique et du couple électromagnétique, en particulier le DTC et ceci en montrant les principes du réglage du flux, du couple et la définition de la logique de commutation. Ensuite il a développé trois structures d'observation : l'observateur d'état d'ordre complet, l'observateur à modes glissants et l'observateur découplé. Une étude comparative entre ces trois structures ainsi que l'estimateur classique, montre que l'observateur découplé est une structure intéressante qui répond aux contraines temporelles liées au DTC et qui résout le problème de fonctionnement à très basses vitesses. Pour l'application multimachines, l'auteur a étudié deux systèmes : le système monoondulateur-bimachines et le système biondulateur-bimachines. La commande est effectuée avec le DTC et le contrôle vectoriel. Comme pour le contrôle vectoriel, le DTC donne des résultats intéressants pour la commande des systèmes multimachines. La dernière partie de ce mémoire consiste à définir une architecture matérielle de validation en mono et multimachines. Il s'agit d'une validation pseudo-expérimentale, de la loi de commande associée à la structure d'observation développée. Ceci est effectué par une co-simulation mixte analogique/numérique.
Download or read book Mod lisation observation et commande de la machine asynchrone written by Sofien Hajji and published by . This book was released on 2009 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt: Les travaux développés dans ce rapport traitent de la modélisation, de l'observation et de avec et sans capteur de vitesse de la machine asynchrone. Tout d'abord, un observateur non linéaire de type grand gain a été synthétisé en vue de l'estimation de quelques grandeurs électriques et mécaniques de la machine. Ensuite, nous proposons une nouvelle loi de commande avec retour d'état incorporant un observateur du type grand gain pour deux classes de systèmes non linéaires uniformément observables et commandables incluant le modèle du moteur asynchrone. La synthèse de cette loi de commande, du type grand gain, exploite le concept de dualité observabilité/commande. Dans le but de réaliser une compensation robuste des perturbations d'état et de sortie de type échelon, une action intégrale filtrée y a été incorporée. Enfin, la loi de commande proposée a été validée en simulation sur le modèle du moteur puis expérimentalement sur un banc d'essais de moteurs asynchrones monté autour d'un processeur numérique de signal DSpace 1104.
Download or read book Recent Developments of Electrical Drives written by Slawomir Wiak and published by Springer Science & Business Media. This book was released on 2007-06-08 with total page 459 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents papers covering a wide spectrum of theory and practice, deeply rooted in engineering problems at a high practical and theoretical level. The contents explore theory, control systems and applications, the heart of the matter in electrical drives.
Download or read book AC Motor Control and Electrical Vehicle Applications written by Kwang Hee Nam and published by CRC Press. This book was released on 2018-09-03 with total page 604 pages. Available in PDF, EPUB and Kindle. Book excerpt: AC Motor Control and Electrical Vehicle Applications provides a guide to the control of AC motors with a focus on its application to electric vehicles (EV). It describes the rotating magnetic flux, based on which dynamic equations are derived. The text not only deals with the induction motor, but covers the permanent magnet synchronous motors (PMSM). Additionally, the control issues are discussed by taking into account the limitations of voltage and current. The latest edition includes more experimental data and expands upon the topics of inverter, pulse width modulation methods, loss minimizing control, and vehicle dynamics. Various EV motor design issues are also reviewed, while comparing typical types of PMSMs. Features Considers complete dynamic modeling of induction and PMSM in the rotating frame. Provides various field-oriented controls, while covering advanced topics in PMSM high speed control, loss minimizing control, and sensorless control. Covers inverter, sensors, vehicle dynamics, driving cycles, etc., not just motor control itself. Offers a comparison between BLDC, surface PMSM, and interior PMSM. Discusses how the motor produces torque and is controlled based on consistent mathematical treatments.
Download or read book Dictionary of Building and Civil Engineering written by Don Montague and published by Taylor & Francis. This book was released on 1996 with total page 472 pages. Available in PDF, EPUB and Kindle. Book excerpt: This dual-language dictionary lists over 20,000 specialist terms in both French and English, covering architecture, building, engineering and property terms. It meets the needs of all building professionals working on projects overseas. It has been comprehensively researched and compiled to provide an invaluable reference source in an increasingly European marketplace.
Download or read book Modern Surface Organometallic Chemistry written by Jean-Marie Basset and published by John Wiley & Sons. This book was released on 2009-07-10 with total page 725 pages. Available in PDF, EPUB and Kindle. Book excerpt: Covering everything from the basics to recent applications, this monograph represents an advanced overview of the field. Edited by internationally acclaimed experts respected throughout the community, the book is clearly divided into sections on fundamental and applied surface organometallic chemistry. Backed by numerous examples from the recent literature, this is a key reference for all chemists.
Download or read book CIKM 13 written by CIKM 13 Conference Committee and published by . This book was released on 2013-10-27 with total page 938 pages. Available in PDF, EPUB and Kindle. Book excerpt: CIKM'13: 22nd ACM International Conference on Information and Knowledge Management Oct 27, 2013-Nov 01, 2013 San Francisco, USA. You can view more information about this proceeding and all of ACM�s other published conference proceedings from the ACM Digital Library: http://www.acm.org/dl.
Download or read book Power Electronics for Modern Wind Turbines written by Frede Blaabjerg and published by Springer Nature. This book was released on 2022-06-01 with total page 65 pages. Available in PDF, EPUB and Kindle. Book excerpt: Wind energy is now the world's fastest growing energy source. In the past 10 years, the global wind energy capacity has increased rapidly. The installed global wind power capacity has grown to 47.317 GW from about 3.5 GW in 1994. The global wind power industry installed 7976 MW in 2004, an increase in total installed generating capacity of 20%. The phenomenal growth in the wind energy industry can be attributed to the concerns to the environmental issues, and research and development of innovative cost-reducing technologies. Denmark is a leading producer of wind turbines in the world, with an almost 40% share of the total worldwide production. The wind energy industry is a giant contributor to the Danish economy. In Denmark, the 3117 MW (in 2004) wind power is supplied by approximately 5500 wind turbines. Individuals and cooperatives own around 80% of the capacity. Denmark will increase the percentage of energy produced from wind to 25% by 2008, and aims for a 50% wind share of energy production by 2025. Wind technology has improved significantly over the past two decades, and almost all of the aspects related to the wind energy technology are still under active research and development. However, this monograph will introduce some basics of the electrical and power electronic aspects involved with modern wind generation systems, including modern power electronics and converters, electric generation and conversion systems for both fixed speed and variable speed systems, control techniques for wind turbines, configurations of wind farms, and the issues of integrating wind turbines into power systems. P
Download or read book NATO Glossary of Terms and Definitions written by North Atlantic Treaty Organization and published by CreateSpace. This book was released on 2013-03-08 with total page 450 pages. Available in PDF, EPUB and Kindle. Book excerpt: NATO Glossary of terms and definitions (English and French). Listing terms of military significance and their definitions for use in NATO.
Download or read book Noise and Vibration of Electrical Machines written by P. L. Tímár and published by Akademiai Kiads. This book was released on 1989-01-01 with total page 339 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Mechanical Vibration written by William John Palm and published by . This book was released on 2007 with total page 728 pages. Available in PDF, EPUB and Kindle. Book excerpt: Model, analyze, and solve vibration problems, using modern computer tools. Featuring clear explanations, worked examples, applications, and modern computer tools, William Palm's Mechanical Vibration provides a firm foundation in vibratory systems. You'll learn how to apply knowledge of mathematics and science to model and analyze systems ranging from a single degree of freedom to complex systems with two and more degrees of freedom. Separate MATLAB sections at the end of most chapters show how to use the most recent features of this standard engineering tool, in the context of solving vibration problems. The text introduces Simulink where solutions may be difficult to program in MATLAB, such as modeling Coulomb friction effects and simulating systems that contain non-linearities. Ample problems throughout the text provide opportunities to practice identifying, formulating, and solving vibration problems. KEY FEATURES Strong pedagogical approach, including chapter objectives and summaries Extensive worked examples illustrating applications Numerous realistic homework problems Up-to-date MATLAB coverage The first vibration textbook to cover Simulink Self-contained introduction to MATLAB in Appendix A Special section dealing with active vibration control in sports equipment Special sections devoted to obtaining parameter values from experimental data
Download or read book Wind Turbines written by Erich Hau and published by Springer Science & Business Media. This book was released on 2005-12-12 with total page 792 pages. Available in PDF, EPUB and Kindle. Book excerpt: Wind Turbines addresses all those professionally involved in research, development, manufacture and operation of wind turbines. It provides a cross-disciplinary overview of modern wind turbine technology and an orientation in the associated technical, economic and environmental fields. It is based on the author's experience gained over decades designing wind energy converters with a major industrial manufacturer and, more recently, in technical consulting and in the planning of large wind park installations, with special attention to economics. The second edition accounts for the emerging concerns over increasing numbers of installed wind turbines. In particular, an important new chapter has been added which deals with offshore wind utilisation. All advanced chapters have been extensively revised and in some cases considerably extended
Download or read book Simplexity written by Alain Berthoz and published by Odile Jacob. This book was released on 2018-12-20 with total page 194 pages. Available in PDF, EPUB and Kindle. Book excerpt: “Simplexity, as I understand it, is the range of solutions living organisms have found, despite the complexity of natural processes, to enable the brain to prepare an action and plan for the consequences of it. These solutions are simplifying principles that enable the processing of information or situations, by taking into account past experience and anticipating the future. They are neither caricatures, shortcuts, or summaries. They are new ways of asking questions, sometimes at the cost of occasional detours, in order to achieve faster, more elegant, more effective actions.” A. B. As Alain Berthoz demonstrates in this profoundly original book, simplicity is never easy; it requires suppressing, selecting, connecting, thinking, in order to then act in the best way possible. And what if we, in turn, are inspired by the living world to process the complexity that surrounds us? Alain Berthoz is professor at the Collège de France where he is co-director of the Laboratoire de physiologie de la perception et de l’action. [Laboratory for the physiology of perception and action]. He is a member of the French Academy of Sciences, and is the author of Le Sens du mouvement [The Brain's Sense of Movement] and La Décision [Emotion and Reason].
Download or read book Principles of Radar and Sonar Signal Processing written by Chevalier François Le and published by Artech House. This book was released on 2002 with total page 422 pages. Available in PDF, EPUB and Kindle. Book excerpt:
