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Etude De Moteurs A Aimants Et Commutation Electronique A Champ Et Courants Non Sinusoidaux
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Book Synopsis Étude de moteurs à aimants et commutation électronique à champ et courants non sinusoïdaux by : João Carlos dos Santos Fagundes
Download or read book Étude de moteurs à aimants et commutation électronique à champ et courants non sinusoïdaux written by João Carlos dos Santos Fagundes and published by . This book was released on 1990 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt: CE TRAVAIL TRAITE DE L'ETUDE DE MACHINES ELECTRIQUES A AIMANTS PERMANENTS ET COMMUTATION ELECTRONIQUE A INDUCTION DANS L'ENTREFER ET A COURANTS D'ALIMENTATION DE FORME D'ONDE RECTANGULAIRE. UNE ATTENTION PARTICULIERE EST PORTEE AU PROBLEME DE L'ONDULATION DU COUPLE DELIVRE PAR LA MACHINE. LES DIFFERENTES CAUSES D'ONDULATION SONT ANALYSEES ET DES SOLUTIONS SONT PROPOSEES POUR LA MINIMISER. UNE ETUDE THEORIQUE EST TOUT D'ABORD REALISEE, AFIN DE DETERMINER LES CONDITIONS A REMPLIR POUR OBTENIR UN COUPLE CONSTANT, EN FONCTION DE LA LARGEUR DE L'ARC POLAIRE, DE LA LARGEUR DES CRENEAUX DE COURANT ET DU NOMBRE DE PHASES DE LA MACHINE. SONT EGALEMENT DETERMINEES LES CONDITIONS D'UTILISATION OPTIMALE D'UNE MACHINE DE DIMENSIONS DONNEES. L'INFLUENCE DES DIVERS PARAMETRES DE LA MACHINE SUR LES FORMES D'ONDES REELLES EST ENSUITE ANALYSEE. CES FORMES D'ONDES PEUVENT EN EFFET S'ECARTER DES FORMES IDEALES, CE QUI CONTRIBUE A AUGMENTER LES ONDULATIONS DU COUPLE. CETTE ANALYSE EST BASEE SUR L'UTILISATION D'UN LOGICIEL DE CALCUL DE CHAMP ET L'EXPLOITATION DE MESURES SUR LES DIFFERENTS PROTOTYPES REALISES. L'EFFET DE L'APPLICATION DES TECHNIQUES CLASSIQUES DE REDUCTION DES ONDULATIONS DU COUPLE DUES AUX ENCOCHES, COMME L'INCLINAISON DES ENCOCHES OU DES AIMANTS, EST EXAMINE ET DES TECHNIQUES PARTICULIERES PERMETTANT DE REDUIRE L'ONDULATION DU COUPLE RESULTANT SONT PRESENTEES. LA DERNIERE PARTIE DE CE TRAVAIL EST CONSACREE A LA DEFINITION DE L'ALIMENTATION ELECTRONIQUE ET A L'ETUDE, DANS UN CAS PARTICULIER, DE L'INFLUENCE DE LA COMMUTATION NON INSTANTANEE DES COURANTS SUR LE COUPLE RESULTANT
Book Synopsis Étude de moteurs sans encoches à aimants permanents de forte puissance à basse vitesse by : Bertrand Nogarède
Download or read book Étude de moteurs sans encoches à aimants permanents de forte puissance à basse vitesse written by Bertrand Nogarède and published by . This book was released on 1990 with total page 207 pages. Available in PDF, EPUB and Kindle. Book excerpt: CE TRAVAIL EST RELATIF A L'ETUDE DE MOTEURS SYNCHRONES A AIMANTS DE FORTE PUISSANCE A BASSE VITESSE, COMPORTANT UN INDUIT SANS ENCOCHES, APTES A DELIVRER UN COUPLE ELEVE ET DONT LES ONDULATIONS SONT REDUITES. L'EXAMEN DE LA FAISABILITE D'UNE TELLE STRUCTURE MONTRE QUE LA SOLUTION SANS ENCOCHES N'EST VRAIMENT PRATICABLE QUE POUR UNE ALIMENTATION PAR DES COURANTS SINUSOIDAUX. DE PLUS, DANS CE CAS, IL APPARAIT QUE L'AUGMENTATION DU VOLUME D'AIMANT ET LES INCONVENIENTS QU'ENTRAINE CETTE SOLUTION, PAR RAPPORT A DES STRUCTURES PLUS CLASSIQUES, NE SONT PAS DEMESUREES SI L'ON CONSIDERE LES AVANTAGES POTENTIELS QU'ELLE PRESENTE. UNE METHODE DE MODELISATION, PARTICULIEREMENT BIEN ADAPTEE A L'ETUDE DES MACHINES A AIMANTS A INDUIT SANS ENCOCHES, EST ENSUITE PRESENTEE. CETTE METHODE EST BASEE SUR LA RESOLUTION ANALYTIQUE DES EQUATIONS DU CHAMP MAGNETIQUE. A L'AIDE DE CET OUTIL, LES CONFIGURATIONS OPTIMALES RELATIVES A LA DISPOSITION DES AIMANTS ET A LA STRUCTURE DU BOBINAGE SONT RECHERCHEES, EN VUE DE MINIMISER LES ONDULATIONS DU COUPLE ELECTROMAGNETIQUE. L'ENSEMBLE DE CES CONSIDERATIONS THEORIQUES EST ENSUITE VALIDE PAR UNE APPROCHE EXPERIMENTALE, DEVELOPPEE AUTOUR D'UN PROTOTYPE SANS ENCOCHES A AIMANTS. CES ESSAIS MONTRENT QU'IL EST PRATIQUEMENT POSSIBLE D'OBTENIR UNE ONDULATION DE COUPLE TRES REDUITE. LE DISPOSITIF D'ALIMENTATION ELECTRONIQUE PERMETTANT LE CONTROLE DE LA MACHINE EST ENFIN PRIS EN COMPTE. L'ANALYSE PROPOSEE PERMET DE CARACTERISER LE FONCTIONNEMENT SUR LE PLAN DU REGIME FONDAMENTAL ET DES HARMONIQUES INTRODUITES PAR L'ALIMENTATION ELECTRONIQUE
Download or read book ICREEC 2019 written by Ahmed Belasri and published by Springer Nature. This book was released on 2020-06-10 with total page 659 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book highlights peer reviewed articles from the 1st International Conference on Renewable Energy and Energy Conversion, ICREEC 2019, held at Oran in Algeria. It presents recent advances, brings together researchers and professionals in the area and presents a platform to exchange ideas and establish opportunities for a sustainable future. Topics covered in this proceedings, but not limited to, are photovoltaic systems, bioenergy, laser and plasma technology, fluid and flow for energy, software for energy and impact of energy on the environment.
Book Synopsis Contribution à l'étude des moteurs à aimants permanents à commutation électronique by : Joseph Samman
Download or read book Contribution à l'étude des moteurs à aimants permanents à commutation électronique written by Joseph Samman and published by . This book was released on 1969 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Étude de la répartition des forces magnétiques dans les machines synchrones à aimants permanents et à commutation électronique by : Yvan Lefèvre
Download or read book Étude de la répartition des forces magnétiques dans les machines synchrones à aimants permanents et à commutation électronique written by Yvan Lefèvre and published by . This book was released on 1988 with total page 185 pages. Available in PDF, EPUB and Kindle. Book excerpt: LE MECANISME DE PRODUCTION DES VIBRATIONS D'ORIGINE MAGNETIQUE DANS LES MACHINES ELECTRIQUES MET EN JEU DES PHENOMENES ELECTRIQUES, MAGNETIQUES ET MECANIQUES. LEUR ETUDE A CONDUIT A L'ELABORATION D'UNE MODELISATION DES FORCES MAGNETIQUES, A LA VALIDATION EXPERIMENTALE DE CETTE MODELISATION, ET A UN LOGICIEL DE CALCUL DE STRUCTURE MECANIQUE DES MACHINES ELECTRIQUES. L'APPLICATION DE L'ENSEMBLE DE LA METHODE, AUX MOTEURS SYNCHRONES A COMMUTATION ELECTRONIQUE A NECESSITE L'ANALYSE HARMONIQUE DES COURANTS FOURNIS PAR L'ALIMENTATION ELECTRONIQUE ET L'ETUDE DES VIBRATIONS DUES A CES DIFFERENTS HARMONIQUES
Download or read book Strap-down Inertial Systems written by and published by . This book was released on 1978 with total page 286 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Inertial Navigation Systems Analysis by : Kenneth Robert Britting
Download or read book Inertial Navigation Systems Analysis written by Kenneth Robert Britting and published by GNSS Technology and Applicatio. This book was released on 2010 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Out-of-print for years, this highly sought-after volume, remains the most popular reference on inertial navigation systems analysis. Finally, this classic book is back in print and readily available only from Artech House. Authored by a pioneer in the field, this authoritative resource focuses on terrestrial navigation, but is also useful for air and sea applications. Packed with valuable, time-saving equations and models, the book helps engineers design optimal navigation systems by comparing the performance of the various types of system mechanizations. Although applications and technology have changed over the years, this book remains the best source for fundamental inertial navigation system knowledge, from notational conventions, reference frames, and geometry of the earth, to unified error analysis, self-alignment techniques, and the development of a system error model. This well-illustrated, timeless reference belongs on the shelf of every practicing engineer working in this area.
Book Synopsis The Rediscovery of Synchronous Reluctance and Ferrite Permanent Magnet Motors by : Gianmario Pellegrino
Download or read book The Rediscovery of Synchronous Reluctance and Ferrite Permanent Magnet Motors written by Gianmario Pellegrino and published by Springer. This book was released on 2016-04-28 with total page 142 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book offers an essential compendium on the analysis and design of synchronous motors for variable-speed applications. Focusing on synchronous reluctance and ferrite permanent-magnet (PM) synchronous reluctance machines, it provides a broad perspective on three-phase machines for variable speed applications, a field currently dominated by asynchronous machines and rare-earth PM synchronous machines. It also describes synchronous reluctance machines and PM machines without rare-earth materials, comparing them to state-of-the-art solutions. The book provides readers with extensive information on and finite element models of PM synchronous machines, including all relevant equations and with an emphasis on synchronous-reluctance and PM-assisted synchronous-reluctance machines. It covers ferrite-assisted machines, modeled as a subcase of PM-assistance, fractional slot combinations solutions, and a quantitative, normalized comparison of torque capability with benchmark PM machines. The book discusses a wealth of techniques for identifying machine parameters, with an emphasis on self-commissioning algorithms, and presents methods for automated machine design and optimization, including a software tool developed for this purpose. Addressing an important gap in the field of PM-less and less-PM electrical machines, it is intended as a self-contained reference guide for both graduate students and professional machine designers, and as a useful text for university courses on automated and/or optimized design of electrical machines and drives.
Book Synopsis Review of Research on Laterites by : Roger Maignien
Download or read book Review of Research on Laterites written by Roger Maignien and published by . This book was released on 1966 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt: Background, definition and scope of the problem; Morphological and analytical characteristics of laterites; Global distribution of laterites; Origin of laterites; Classification of laterites.
Book Synopsis Guidance and Control of Aerospace Vehicles by : Cornelius T. Leondes
Download or read book Guidance and Control of Aerospace Vehicles written by Cornelius T. Leondes and published by . This book was released on 2013-09 with total page 622 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Theory and Applications of Kalman Filtering by : Cornelius T. Leondes
Download or read book Theory and Applications of Kalman Filtering written by Cornelius T. Leondes and published by . This book was released on 1970 with total page 560 pages. Available in PDF, EPUB and Kindle. Book excerpt: Contents: Linear estimation theory; Further comments on the derivation of Kalman filters; Computational techniques in Kalman filtering; Modeling errors in Kalman filters; Suboptimal Kalman filter techniques; Comparison of Kalman, Bayesian and maximum likelihood estimation techniques; Nonlinear filtering and comparison with Kalman filtering; Linear smoothing techniques (post-flight data analysis); Nonlinear smoothing techniques; General questions on Kalman filtering in navigation systems; Application of Kalman filtering theory to augmented inertial navigation systems; Application of Kalman filtering to Baro/inertial height systems; Application of Kalman filtering to the C-5 guidance and control system; Application of Kalman filtering techniques to the Apollo program; Some applications of Kalman filtering in space guidance; Application of Kalman filtering for the alighnment of carrier aircraft inertial navigation systems; Navigation at sea using the invariants form of Kalman filtering; Marine applications of Kalman filtering; Optimal use of redundant information in an inertial navigation; Application of Kalman filtering techniques to strapdown system initia-alignment; and A Kalman filter augmented marine navigation system.
Download or read book An Analytical Calculus written by and published by CUP Archive. This book was released on with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Forest Fire Research by : Universidade de Coimbra
Download or read book Forest Fire Research written by Universidade de Coimbra and published by . This book was released on 2010 with total page 355 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Global Warming and Climate Change by : Emma Carlson Berne
Download or read book Global Warming and Climate Change written by Emma Carlson Berne and published by Referencepoint Press. This book was released on 2008 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt: Throughout the world, the cause and impact of global warming and climate change is being passionately debated. While many claim that a climate crisis is imminent if greenhouse gases are not curbed, others argue that the effects have been overblown. Through objective overviews, primary sources, and full-color illustrations, this title will examine What Is Global Warming and Climate Change? What Are the Consequences of Global Warming? What Are the Controversies Surrounding Global Warming? What Are the Solutions for Global Warming?
Book Synopsis Energy Exchange in the Biosphere by : David Murray Gates
Download or read book Energy Exchange in the Biosphere written by David Murray Gates and published by . This book was released on 1962 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Studies on Growth by : L. G. M. Baas Becking
Download or read book Studies on Growth written by L. G. M. Baas Becking and published by . This book was released on 1926 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Shakespeare and Costume in Practice by : Bridget Escolme
Download or read book Shakespeare and Costume in Practice written by Bridget Escolme and published by Springer Nature. This book was released on 2020-12-23 with total page 223 pages. Available in PDF, EPUB and Kindle. Book excerpt: What is the role of costume in Shakespeare production? Shakespeare and Costume in Practice argues that costume design choices are central not only to the creation of period setting and the actor’s work on character, but to the cultural, political, and psychological meanings that the theatre makes of Shakespeare. The book explores questions about what the first Hamlet looked like in his mourning cloak; how costumes for a Shakespeare comedy can reflect or critique the collective nostalgias a culture has for its past; how costume and casting work together to ask new questions about Shakespeare and race. Using production case studies of Hamlet, Much Ado About Nothing, and The Tempest, the book demonstrates that costume design can be a site of experimentation, playfulness, and transgression in the theatre – and that it can provoke audiences to think again about what power, race, and gender look like on the Shakespearean stage.
