Etude De Moteurs Sans Encoches A Aimants Permanents De Forte Puissance A Basse Vitesse

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Étude de moteurs sans encoches à aimants permanents de forte puissance à basse vitesse

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Author : Bertrand Nogarède
Publisher :
ISBN 13 :
Total Pages : 207 pages
Book Rating : 4.:/5 (489 download)

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

Computational Methods for the Innovative Design of Electrical Devices

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Author : Slawomir Wiak
Publisher : Springer Science & Business Media
ISBN 13 : 364216224X
Total Pages : 378 pages
Book Rating : 4.6/5 (421 download)

Book Synopsis Computational Methods for the Innovative Design of Electrical Devices by : Slawomir Wiak

Download or read book Computational Methods for the Innovative Design of Electrical Devices written by Slawomir Wiak and published by Springer Science & Business Media. This book was released on 2010-10-29 with total page 378 pages. Available in PDF, EPUB and Kindle. Book excerpt: Computational Methods for the Innovative Design of Electrical Devices is entirely focused on the optimal design of various classes of electrical devices. Emerging new methods, like e.g. those based on genetic algorithms, are presented and applied in the design optimization of different devices and systems. Accordingly, the solution to field analysis problems is based on the use of finite element method, and analytical methods as well. An original aspect of the book is the broad spectrum of applications in the area of electrical engineering, especially electrical machines. This way, traditional design criteria of conventional devices are revisited in a critical way, and some innovative solutions are suggested. In particular, the optimization procedures developed are oriented to three main aspects: shape design, material properties identification, machine optimal behaviour. Topics covered include: • New parallel finite-element solvers • Response surface method • Evolutionary computing • Multiobjective optimization • Swarm intelligence • MEMS applications • Identification of magnetic properties of anisotropic laminations • Neural networks for non-destructive testing • Brushless DC motors, transformers • Permanent magnet disc motors, magnetic separators • Magnetic levitation systems

JPIII

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Author :
Publisher :
ISBN 13 :
Total Pages : 698 pages
Book Rating : 4.X/5 (2 download)

Book Synopsis JPIII by :

Download or read book JPIII written by and published by . This book was released on 1995 with total page 698 pages. Available in PDF, EPUB and Kindle. Book excerpt:

International Conference on Electrical Machines and Drives

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Author :
Publisher :
ISBN 13 :
Total Pages : 352 pages
Book Rating : 4.3/5 (91 download)

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Download or read book International Conference on Electrical Machines and Drives written by and published by . This book was released on 1991 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt:

IMACS '91

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Author : Robert Vichnevetsky
Publisher :
ISBN 13 :
Total Pages : 514 pages
Book Rating : 4.3/5 (91 download)

Book Synopsis IMACS '91 by : Robert Vichnevetsky

Download or read book IMACS '91 written by Robert Vichnevetsky and published by . This book was released on 1991 with total page 514 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Dimensionnement optimal d'un moteur sans balais à aimants permanents Néodyme-Fer-Bore

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Author : Abdellatif Miraoui
Publisher :
ISBN 13 :
Total Pages : 161 pages
Book Rating : 4.:/5 (49 download)

Book Synopsis Dimensionnement optimal d'un moteur sans balais à aimants permanents Néodyme-Fer-Bore by : Abdellatif Miraoui

Download or read book Dimensionnement optimal d'un moteur sans balais à aimants permanents Néodyme-Fer-Bore written by Abdellatif Miraoui and published by . This book was released on 1992 with total page 161 pages. Available in PDF, EPUB and Kindle. Book excerpt: LE TRAVAIL PRESENTE PORTE SUR LE DIMENSIONNEMENT OPTIMAL D'UN MOTEUR SANS BALAIS, DE FAIBLE PUISSANCE, A AIMANTS PERMANENTS NEODYME-FER-BORE. LE MOTEUR EST ALIMENTE A COURANT CONSTANT. LE CRITERE D'OPTIMISATION QUI A ETE RETENU EST D'OBTENIR UNE VALEUR MOYENNE ELEVEE ET UN TAUX D'HARMONIQUES FAIBLE DU COUPLE FOURNI PAR CE TYPE DE MOTEUR SYNCHRONE AUTOPILOTE. CE CHOIX EST PLUS CONTRAIGNANT QUE CELUI DU COUPLE MAXIMUM MAXIMORUM. IL CONDITIONNE L'UTILISATION DE CES MOTEURS EN ROBOTIQUE OU EN PRODUCTIQUE. UN LOGICIEL A D'ABORD ETE ELABORE. IL CONDUIT A UN DESIGN SUFFISAMMENT PRECIS DES CIRCUITS MAGNETIQUES ET DES ENCOCHES. DEUX STRUCTURES ONT ETE OPTIMISEES EN UTILISANT UN LOGICIEL DE CALCUL DE CHAMPS PAR LA METHODE D'ELEMENTS FINIS (FLUX2D). LA PREMIERE EST SANS PIECES POLAIRES AVEC DES AIMANTS COLLES SUR LE ROTOR. UNE SOLUTION ORIGINALE A AIMANTS FORTEMENT SEGMENTES EST PROPOSEE ET COMPAREE A CELLE, CLASSIQUE, UTILISANT DES AIMANTS EN FORME DE TUILES. ELLE SE REVELE NETTEMENT PLUS PERFORMANTE. LA DEUXIEME EST AVEC PIECES POLAIRES ET CONCENTRATION DE FLUX, DANS CE CADRE NOUS SUGGERONS DE PLACER DES AIMANTS AUXILIAIRES CONTRE L'AXE DE LA MACHINE. CEUX-CI PERMETTENT D'AUGMENTER SENSIBLEMENT LE COUPLE. L'OPTIMISATION PORTE SUR LE NOMBRE DE PAIRES DE POLES, L'OUVERTURE ET/OU L'EPAISSEUR DES AIMANTS PRINCIPAUX ET AUXILIAIRES ET LA VALEUR DE L'ENTREFER. ELLE S'INTERESSE EGALEMENT A L'INFLUENCE DE LA REACTION D'INDUIT. DEUX MOYENS POUR REDUIRE ENCORE PLUS LE COUPLE PULSATOIRE SONT ETUDIES: L'INCLINAISON DES ENCOCHES OU DES AIMANTS ET L'UTILISATION D'UN ANNEAU MAGNETIQUE ADAPTE A LA STRUCTURE A AIMANTS SEGMENTES. LA COMPARAISON DES DIFFERENTES STRUCTURES DONNE LA PREFERENCE A CELLE A AIMANTS SEGMENTES PLACES DANS L'ENTREFER AVEC UNE OUVERTURE VOISINE DE 0.8. POUR AVOIR UN COUPLE PULSATOIRE D'AMPLITUDE INFERIEURE A 1% PAR RAPPORT AU COUPLE MOYEN, L'ANNEAU MAGNETIQUE SE REVELE LE PLUS PERFORMANT AVEC UNE DIMINUTION FAIBLE DU COUPLE MOYEN.

Conference Publication

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Author :
Publisher :
ISBN 13 :
Total Pages : 702 pages
Book Rating : 4.:/5 (31 download)

Book Synopsis Conference Publication by :

Download or read book Conference Publication written by and published by . This book was released on 1991 with total page 702 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Modélisation, conception et optimisation des machines sans encoches à aimants permanents à haute vitesse

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Author : Ahmed Chebak
Publisher :
ISBN 13 :
Total Pages : 270 pages
Book Rating : 4.:/5 (869 download)

Book Synopsis Modélisation, conception et optimisation des machines sans encoches à aimants permanents à haute vitesse by : Ahmed Chebak

Download or read book Modélisation, conception et optimisation des machines sans encoches à aimants permanents à haute vitesse written by Ahmed Chebak and published by . This book was released on 2013 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Contribution à la conception d'un moteur à aimants permanents du type jante et à son alimentation

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Author : Li Kong
Publisher :
ISBN 13 :
Total Pages : 213 pages
Book Rating : 4.:/5 (952 download)

Book Synopsis Contribution à la conception d'un moteur à aimants permanents du type jante et à son alimentation by : Li Kong

Download or read book Contribution à la conception d'un moteur à aimants permanents du type jante et à son alimentation written by Li Kong and published by . This book was released on 1994 with total page 213 pages. Available in PDF, EPUB and Kindle. Book excerpt: The subject of this dissertation is the study of a pennanent magnet brushless motor and its feed.ing inverter in the application of an electric vehicle. The different systems of electric vehicles are reviewed in the first chapter. The solution retained is an in-wheel brushless motor with pennanent magnet NdFeB. The points focused in designing a brushless motor concem the minimisation of the harmonics and the temperature influences on the magnetic characteristics of the magnet NdFeB and, therefore, on the motor. In chapter 2, the magnets are divided in some blocks and are shifted up each other along the motor axis. Based on the static torque curve, the real dimensions of the magnets and the slots and the saturation effect have been taken into account in our study. In regular shifting, the best total shifting angle does not correspond to a tooth step. The irregular shifting is approved particularly efficient even in the case of3 magnet blocks. In the third chapter, the entire B(H) curves of NdFeB is described, for all temperatures, by means of the double variables Chebychev polynomial series. These expressions are integrated in the package Flux-Expert for determining the magnetic field of the machine (in 2D) by finite elements method. This motor is especially sensible to the temperature and the armature reaction does not change greatly the working point of magnet. The two stages DC AC-AC supply inverter allows to have a soft switching in the drive system and, therefore, a limited electromagnetic pollution in the vehicle. The behaviour of this inverter is simulated, in chapter 5, by means of a program adapted from the software A TOSEC. The simulation results show that themodulation frequency for the first stage of the inverter should be in the order of 20kHz for a good current regulation. The simulation is valid for a lspeed up to 75% of its maximum under the rated eurrent and the current control remains efficient when the current is shifted from the electromagnetic force by an angle and even with the presence of toothharmonies

The telephone, the microphone, and the phonograph. Transl

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Author : comte Théodore Achille L. Du Moncel
Publisher :
ISBN 13 :
Total Pages : 414 pages
Book Rating : 4.R/5 (5 download)

Book Synopsis The telephone, the microphone, and the phonograph. Transl by : comte Théodore Achille L. Du Moncel

Download or read book The telephone, the microphone, and the phonograph. Transl written by comte Théodore Achille L. Du Moncel and published by . This book was released on 1879 with total page 414 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Dictionary of Building and Civil Engineering

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Author : Don Montague
Publisher : Taylor & Francis
ISBN 13 : 9780419199106
Total Pages : 472 pages
Book Rating : 4.1/5 (991 download)

Book Synopsis Dictionary of Building and Civil Engineering by : Don Montague

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.

Africa Since 1935

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Author : Unesco. International Scientific Committee for the Drafting of a General History of Africa
Publisher : Univ of California Press
ISBN 13 : 9780520067035
Total Pages : 1076 pages
Book Rating : 4.0/5 (67 download)

Book Synopsis Africa Since 1935 by : Unesco. International Scientific Committee for the Drafting of a General History of Africa

Download or read book Africa Since 1935 written by Unesco. International Scientific Committee for the Drafting of a General History of Africa and published by Univ of California Press. This book was released on 1999 with total page 1076 pages. Available in PDF, EPUB and Kindle. Book excerpt: The hardcover edition of volume 8 was published in 1994. This paperback edition is the eighth and final volume to be published in the UNESCO General History of Africa. Volume 8 examines the period from 1935 to the present, and details the role of African states in the Second World War and the rise of postwar Africa. This is one of the most important books in the entire series, and as such, it is an unabridged paperback.

Artificial Evolution

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Author : Lhassane Idoumghar
Publisher : Springer Nature
ISBN 13 : 303045715X
Total Pages : 233 pages
Book Rating : 4.0/5 (34 download)

Book Synopsis Artificial Evolution by : Lhassane Idoumghar

Download or read book Artificial Evolution written by Lhassane Idoumghar and published by Springer Nature. This book was released on 2020-04-29 with total page 233 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book constitutes the thoroughly refereed post-conference proceedings of the 14th International Conference on Artificial Evolution, EA 2019, held in Mulhouse, France, in October 2019. The 16 revised papers were carefully reviewed and selected from 33 submissions. The papers cover a wide range of topics in the field of artificial evolution, such as evolutionary computation, evolutionary optimization, co-evolution, artificial life, population dynamics, theory, algorithmic and modeling, implementations, application of evolutionary paradigms to the real world (industry, biosciences...), other biologically-inspired paradigms (swarm, artificial ants, artificial immune systems, cultural algorithms...), memetic algorithms, multi-objective optimization, constraint handling, parallel algorithms, dynamic optimization, machine learning and hybridization with other soft computing techniques.

Modelling, Identification and Control

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Author : International Association of Science and Technology for Development
Publisher : Anaheim, Calif. ; Calgary : Acta Press
ISBN 13 :
Total Pages : 310 pages
Book Rating : 4.F/5 ( download)

Book Synopsis Modelling, Identification and Control by : International Association of Science and Technology for Development

Download or read book Modelling, Identification and Control written by International Association of Science and Technology for Development and published by Anaheim, Calif. ; Calgary : Acta Press. This book was released on 1984 with total page 310 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Préhistoire africaine

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Author : Colette Roubet
Publisher :
ISBN 13 :
Total Pages : 386 pages
Book Rating : 4.3/5 (91 download)

Book Synopsis Préhistoire africaine by : Colette Roubet

Download or read book Préhistoire africaine written by Colette Roubet and published by . This book was released on 1981 with total page 386 pages. Available in PDF, EPUB and Kindle. Book excerpt:

The Ladybird Illustrated

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Author : D H Lawrence
Publisher :
ISBN 13 :
Total Pages : 100 pages
Book Rating : 4.5/5 (61 download)

Book Synopsis The Ladybird Illustrated by : D H Lawrence

Download or read book The Ladybird Illustrated written by D H Lawrence and published by . This book was released on 2020-11-09 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The Ladybird is a long tale or novella by D. H. Lawrence. It was first drafted in 1915 as a short story entitled The Thimble. Lawrence rewrote and extended it under a new title in December 1921 and sent the final version to his English agent on 9 January 1922. It was collected with two other tales, The Captain's Doll and The Fox, and the three novellas were then published in London by Martin Secker in March 1923 under the title The Ladybird and in New York by Thomas Seltzer as The Captain's Doll in April 1923."

Notes on the Minor Prophets

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Author : Henry Allan Ironside
Publisher :
ISBN 13 :
Total Pages : 464 pages
Book Rating : 4.:/5 (54 download)

Book Synopsis Notes on the Minor Prophets by : Henry Allan Ironside

Download or read book Notes on the Minor Prophets written by Henry Allan Ironside and published by . This book was released on 1955 with total page 464 pages. Available in PDF, EPUB and Kindle. Book excerpt: