Elaboration Sans Prototypage Du Circuit Equivalent De Transformateurs De Type Planar

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Élaboration sans prototypage du circuit équivalent de transformateurs de type planar

Author : Xavier Margueron
Publisher :
ISBN 13 :
Total Pages : 275 pages
Book Rating : 4.:/5 (493 download)

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Book Synopsis Élaboration sans prototypage du circuit équivalent de transformateurs de type planar by : Xavier Margueron

Download or read book Élaboration sans prototypage du circuit équivalent de transformateurs de type planar written by Xavier Margueron and published by . This book was released on 2006 with total page 275 pages. Available in PDF, EPUB and Kindle. Book excerpt: La technologie planar est très intéressante pour les transformateurs utilisés dans les équipements aéronautiques car elle mène à des composants minces et utilisables dans des espaces confinés. Malheureusement, le dimensionnement des transformateurs de ce type, lorsqu'ils fonctionnent au-delà de 100 kHz, est un travail aléatoire car les règles et les outils de conception ne sont pas les mêmes que pour un transformateur bobiné classique. Au long de ce mémoire, on apprend à représenter ces composants par un circuit équivalent et à identifier ce circuit équivalent par des mesures d'impédances. Compte tenu du grand nombre de paramètres ajustables, l'optimisation d'un tel transformateur serait compromise s'il fallait compter sur des simulations à éléments finis pour déduire les éléments du circuit équivalent. C'est pourquoi nous essayons de déduire, par des moyens analytiques, les éléments de ce circuit en partant des caractéristiques physiques et géométriques du composant. Le but est atteint pour tous les éléments du transformateur de fuites obtenus à l'aide d'un calcul original exploitant les formules de la méthode PEEC. Nous étudions ensuite les problèmes posés par la mise en parallèle de spires, inévitable lorsqu'on veut faire circuler des centaines d'Ampères. Une approche analytique simple s'avère alors très efficace et, grâce à elle, la meilleure disposition des spires peut être recherchée à l'aide d'un logiciel de simulation de circuits de type PSpice. Enfin, diverses solutions sont envisagées et testées par simulation fem pour réduire les pertes par courants induits dans les transformateurs et dans les conducteurs méplats. Le développement multipolaire du champ magnétique est largement mis à contribution pour mener ces études

Élaboration sans prototypage du circuit équivalent de transformateurs de type planar

Author : Xavier Margueron
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (125 download)

DOWNLOAD NOW!

Book Synopsis Élaboration sans prototypage du circuit équivalent de transformateurs de type planar by : Xavier Margueron

Download or read book Élaboration sans prototypage du circuit équivalent de transformateurs de type planar written by Xavier Margueron and published by . This book was released on 2007 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: La technologie planar est très intéressante pour les transformateurs utilisés dans les équipements aéronautiques car elle mène à des composants minces et utilisables dans des espaces confinés. Malheureusement, le dimensionnement des transformateurs de ce type, lorsqu'ils fonctionnent au-delà de 100 kHz, est un travail aléatoire car les règles et les outils de conception ne sont pas les mêmes que pour un transformateur bobiné classique. Au long de ce mémoire, on apprend à représenter ces composants par un circuit équivalent et à identifier ce circuit équivalent par des mesures d'impédances. Compte tenu du grand nombre de paramètres ajustables, l'optimisation d'un tel transformateur serait compromise s'il fallait compter sur des simulations à éléments finis pour déduire les éléments du circuit équivalent. C'est pourquoi nous essayons de déduire, par des moyens analytiques, les éléments de ce circuit en partant des caractéristiques physiques et géométriques du composant. Le but est atteint pour tous les éléments du transformateur de fuites obtenus à l'aide d'un calcul original exploitant les formules de la méthode PEEC. Nous étudions ensuite les problèmes posés par la mise en parallèle de spires, inévitable lorsqu'on veut faire circuler des centaines d'Ampères. Une approche analytique simple s'avère alors très efficace et, grâce à elle, la meilleure disposition des spires peut être recherchée à l'aide d'un logiciel de simulation de circuits de type PSpice. Enfin, diverses solutions sont envisagées et testées par simulation fem pour réduire les pertes par courants induits dans les transformateurs et dans les conducteurs méplats. Le développement multipolaire du champ magnétique est largement mis à contribution pour mener ces études.

Architectural Bodies

Author : Ad Graafland
Publisher : 010 Publishers
ISBN 13 : 9789064502897
Total Pages : 136 pages
Book Rating : 4.5/5 (28 download)

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Book Synopsis Architectural Bodies by : Ad Graafland

Download or read book Architectural Bodies written by Ad Graafland and published by 010 Publishers. This book was released on 1996 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Unpacking Duchamp

Author : Dalia Judovitz
Publisher : Univ of California Press
ISBN 13 : 9780520213760
Total Pages : 330 pages
Book Rating : 4.2/5 (137 download)

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Book Synopsis Unpacking Duchamp by : Dalia Judovitz

Download or read book Unpacking Duchamp written by Dalia Judovitz and published by Univ of California Press. This book was released on 1998-04-28 with total page 330 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Transit, transitional, transition: Dalia Judovitz catches Marcel Duchamp on the run with his art in a suitcase and his thought all boxed and ready to go. . . . She demonstrates how the theme of transition, reappearing from work to work, makes each piece reproduce some other piece, while all continue to exemplify an original which can no longer be found and which has no creator."—Jean-François Lyotard

Wind-tunnel Investigation of a Number of Total-pressure Tubes at High Angles of Attack

Author : A. Gerald Rainey
Publisher :
ISBN 13 :
Total Pages : 316 pages
Book Rating : 4.3/5 (243 download)

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Book Synopsis Wind-tunnel Investigation of a Number of Total-pressure Tubes at High Angles of Attack by : A. Gerald Rainey

Download or read book Wind-tunnel Investigation of a Number of Total-pressure Tubes at High Angles of Attack written by A. Gerald Rainey and published by . This book was released on 1957 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Flexoelectricity in Liquid Crystals

Author : Agnes Buka
Publisher : World Scientific
ISBN 13 : 1848167997
Total Pages : 299 pages
Book Rating : 4.8/5 (481 download)

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Book Synopsis Flexoelectricity in Liquid Crystals by : Agnes Buka

Download or read book Flexoelectricity in Liquid Crystals written by Agnes Buka and published by World Scientific. This book was released on 2013 with total page 299 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book intends to give a state-of-the-art overview of flexoelectricity, a linear physical coupling between mechanical (orientational) deformations and electric polarization, which is specific to systems with orientational order, such as liquid crystals. Chapters written by experts in the field shed light on theoretical as well as experimental aspects of research carried out since the discovery of flexoelectricity. Besides a common macroscopic (continuum) description the microscopic theory of flexoelectricity is also addressed. Electro-optic effects due to or modified by flexoelectricity as well as various (direct and indirect) measurement methods are discussed. Special emphasis is given to the role of flexoelectricity in pattern-forming instabilities. While the main focus of the book lies in flexoelectricity in nematic liquid crystals, peculiarities of other mesophases (bent-core systems, cholesterics, and smectics) are also reviewed. Flexoelectricity has relevance to biological (living) systems and can also offer possibilities for technical applications. The basics of these two interdisciplinary fields are also summarized.

Substation Automation

Author : Mladen Kezunovic
Publisher : Springer Verlag
ISBN 13 : 9781441961532
Total Pages : 400 pages
Book Rating : 4.9/5 (615 download)

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Book Synopsis Substation Automation by : Mladen Kezunovic

Download or read book Substation Automation written by Mladen Kezunovic and published by Springer Verlag. This book was released on 2010-07-16 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of the book is to fill a knowledge gap by covering the topic of substation automation by a team of authors, with academic and industry backgrounds. Understanding substation automation concepts and practical solutions requires knowledge in vastly diverse areas, such as primary and secondary equipment, computers, communications, fiber optic sensors, signal processing, and general information technology not generally taught in a power curricula but taught as independent subjects. At the same time, utility practice dictates how substation automation designs may be laid out and deployed. To design such a system one also requires knowledge about existing standards for data exchange, as well as test methods for evaluation of solutions. This book is designed to meet the educational needs of undergraduate and graduate power majors, as well as to serve as a reference to professionals who need to know about substation automation because of fast changing technology expertise needed in their careers. To meet the wide range of interests and needs, the book covers diverse aspects of substation automation, allowing instructors to select the best combination of chapters to meet their specific educational needs.

Nuclear Emergencies

Author : Georg Steinhauser
Publisher : Springer Nature
ISBN 13 : 9811383278
Total Pages : 236 pages
Book Rating : 4.8/5 (113 download)

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Book Synopsis Nuclear Emergencies by : Georg Steinhauser

Download or read book Nuclear Emergencies written by Georg Steinhauser and published by Springer Nature. This book was released on 2019-08-20 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book discusses nuclear events that may become imminent threats to the fabric of our society, and elucidates strategies for preventing these threats or mitigating their adverse effects. It addresses multidisciplinary aspects of various nuclear emergencies, including nuclear accidents, terror attacks involving nuclear materials, illicit trafficking of nuclear materials, and problems related to nuclear forensics and strikes with nuclear weapons/warheads. Very often, nuclear emergencies are only discussed within certain, specific communities. However, this volume brings together experts from various fields to provide a more holistic approach to the problem. Physical, chemical, environmental, social, and medical scientists, together with representatives from the media and authorities, present their views on and strategies for events that cause fear and anxiety among the public – an aspect that can be even more threatening than the direct health effects. The book offers a valuable guide for nuclear scientists, such as radioecologists, health physicists, radioanalytical scientists and nuclear engineers, as well as decision-makers and national/international authorities.

A Comparative History of National Oil Companies

Author : Alain Beltran
Publisher : Peter Lang
ISBN 13 : 9789052015750
Total Pages : 348 pages
Book Rating : 4.0/5 (157 download)

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Book Synopsis A Comparative History of National Oil Companies by : Alain Beltran

Download or read book A Comparative History of National Oil Companies written by Alain Beltran and published by Peter Lang. This book was released on 2010 with total page 348 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proceedings of a conference held in Nov. 2003.

Food In Global History

Author : Raymond Grew
Publisher : Routledge
ISBN 13 : 0429980043
Total Pages : 423 pages
Book Rating : 4.4/5 (299 download)

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Book Synopsis Food In Global History by : Raymond Grew

Download or read book Food In Global History written by Raymond Grew and published by Routledge. This book was released on 2018-02-19 with total page 423 pages. Available in PDF, EPUB and Kindle. Book excerpt: Social scientists study food in many different ways. Historians have most often studied the history of specific foods; anthropologists have emphasized the role of food in religious rituals and group identities; sociologists have looked primarily at food as an indicator of social class and a factor in social ties; and nutritionists have focused on changing patterns of consumption and applied medical knowledge to study the effects of diet on public health. Other scholars have studied the economic and political connections surrounding commerce in food. Here these perspectives are brought together in a single volume.

Nonlinear Optical Materials

Author : Jerome V. Moloney
Publisher : Springer Science & Business Media
ISBN 13 : 9780387985817
Total Pages : 270 pages
Book Rating : 4.9/5 (858 download)

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Book Synopsis Nonlinear Optical Materials by : Jerome V. Moloney

Download or read book Nonlinear Optical Materials written by Jerome V. Moloney and published by Springer Science & Business Media. This book was released on 1998-08-13 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mathematical methods play a significant role in the rapidly growing field of nonlinear optical materials. This volume discusses a number of successful or promising contributions. The overall theme of this volume is twofold: (1) the challenges faced in computing and optimizing nonlinear optical material properties; and (2) the exploitation of these properties in important areas of application. These include the design of optical amplifiers and lasers, as well as novel optical switches. Research topics in this volume include how to exploit the magnetooptic effect, how to work with the nonlinear optical response of materials, how to predict laser-induced breakdown in efficient optical devices, and how to handle electron cloud distortion in femtosecond processes.

Exhibiting Electricity

Author : K. G. Beauchamp
Publisher : IET
ISBN 13 : 9780852968956
Total Pages : 358 pages
Book Rating : 4.9/5 (689 download)

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Book Synopsis Exhibiting Electricity by : K. G. Beauchamp

Download or read book Exhibiting Electricity written by K. G. Beauchamp and published by IET. This book was released on 1997 with total page 358 pages. Available in PDF, EPUB and Kindle. Book excerpt: This unusual book traces the history of public and technical exhibitions, from their origins in the late 18th Century to present day, and, particularly, how they have reflected the progress of science and technology especially electrical technology). Not only does the author show how electrical innovation and manufacture have been presented to the wider public through this period, but he also shows how the exhibitions themselves have required technological advice.

Cultivating Dissent

Author : Winnie Lem
Publisher : SUNY Press
ISBN 13 : 9780791441886
Total Pages : 292 pages
Book Rating : 4.4/5 (418 download)

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Book Synopsis Cultivating Dissent by : Winnie Lem

Download or read book Cultivating Dissent written by Winnie Lem and published by SUNY Press. This book was released on 1999-04-29 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt: Explores rural resistance, class consciousness, and the politics of contemporary culture through the experience of family farmers in France's "red south."

Pictorial Nominalism

Author : Thierry De Duve
Publisher : U of Minnesota Press
ISBN 13 : 081664859X
Total Pages : 255 pages
Book Rating : 4.8/5 (166 download)

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Book Synopsis Pictorial Nominalism by : Thierry De Duve

Download or read book Pictorial Nominalism written by Thierry De Duve and published by U of Minnesota Press. This book was released on 2005-10-01 with total page 255 pages. Available in PDF, EPUB and Kindle. Book excerpt: Reveals the invention of the readymade as a critical point in contemporary art.

The Duchamp Effect

Author : Martha Buskirk
Publisher : MIT Press
ISBN 13 : 9780262522175
Total Pages : 246 pages
Book Rating : 4.5/5 (221 download)

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Book Synopsis The Duchamp Effect by : Martha Buskirk

Download or read book The Duchamp Effect written by Martha Buskirk and published by MIT Press. This book was released on 1996-09-25 with total page 246 pages. Available in PDF, EPUB and Kindle. Book excerpt: This expanded edition of the fall 1994 special issue of October includes new essays by Sarat Maharaj and by Molly Nesbit and Naomi Sawelson-Gorse. It also includes the transcript of an exchange between T. J. Clark and Benjamin Buchloh which presents new responses to the problems raised by this immediately popular (and now out of print) issue of the journal. The Duchamp Effect is an investigation of the historical reception of the work of Marcel Duchamp from the 1950s to the present, including interviews by Benjamin Buchloh (with Claes Oldenburg, Andy Warhol, and Robert Morris), Elizabeth Armstrong (with Ed Ruscha and Bruce Conner), and Martha Buskirk (with Louise Lawler, Sherrie Levine, and Fred Wilson) and a round-table discussion of the Duchamp effect on conceptual art. Contents Introduction, Benjamin H. D. Buchloh • What's Neo about the Neo-Avant-Garde?, Hal Foster • Typotranslating the Green Box, Sarat Maharaj • Three Conversations in 1985: Claes Oldenburg, Andy Warhol, Robert Morris, Benjamin H. D. Buchloh • Interviews with Ed Ruscha and Bruce Conner, Elizabeth Armstrong • Echoes of the Readymade: Critique of Pure Modernism, Thierryde Duve • Concept of Nothing: New Notes by Marcel Duchamp and Walter Arensberg, Molly Nesbit and Naomi Sawelson-Gorse • Interviews with Sherrie Levine, Louis Lawler, and Fred Wilson, Martha Buskirk • Thoroughly Modern Marcel, Martha Buskirk • Conceptual Art and the Reception of Duchamp, October Round Table • All the Things I Said about Duchamp: A Response to Benjamin Buchloh, T. J. Clark • Response to T. J. Clark, Benjamin Buchloh

Charles Garnier's Paris Opéra

Author : Christopher Curtis Mead
Publisher : MIT Press (MA)
ISBN 13 :
Total Pages : 360 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Charles Garnier's Paris Opéra by : Christopher Curtis Mead

Download or read book Charles Garnier's Paris Opéra written by Christopher Curtis Mead and published by MIT Press (MA). This book was released on 1991 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt: By making systematic use of the mostly unpublished Opera Archive, Mead fills in the missing links to previous investigations and unlocks the significance of this seminal masterpiece.

Marcel Duchamp’s Fountain

Author : Robert Kilroy
Publisher : Springer
ISBN 13 : 3319691589
Total Pages : 170 pages
Book Rating : 4.3/5 (196 download)

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Book Synopsis Marcel Duchamp’s Fountain by : Robert Kilroy

Download or read book Marcel Duchamp’s Fountain written by Robert Kilroy and published by Springer. This book was released on 2017-12-04 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book marks the centenary of Marcel Duchamp’s Fountain by critically re-examining the established interpretation of the work. It introduces a new methodological approach to art-historical practice rooted in a revised understanding of Lacan, Freud and Slavoj Žižek. In weaving an alternative narrative, Kilroy shows us that not only has Fountain been fundamentally misunderstood but that this very misunderstanding is central to the work’s significance. The author brings together Duchamp’s own statements to argue Fountain’s verdict was strategically stage-managed by the artist in order to expose the underlying logic of its reception, what he terms ‘The Creative Act.’ This book will be of interest to a broad range of readers, including art historians, psychoanalysts, scholars and art enthusiasts interested in visual culture and ideological critique.