Modélisation des émissions conduites de mode commun d'une chaîne électromécanique

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ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (111 download)

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Book Synopsis Modélisation des émissions conduites de mode commun d'une chaîne électromécanique by : Victor Dos Santos (docteur en génie électrique).)

Download or read book Modélisation des émissions conduites de mode commun d'une chaîne électromécanique written by Victor Dos Santos (docteur en génie électrique).) and published by . This book was released on 2019 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Au cours de ces dernières décennies, les avionneurs n'ont cessé d'augmenter la puissance électrique embarquée à bord des avions. Cette intensification de l'usage de l'électricité, dans le but de rationaliser les énergies secondaires de l'avion (pneumatique, hydraulique, mécanique) constitue le fondement du concept de l'avion plus électrique. Une des contreparties de l'augmentation du nombre de charges électriques réside dans le fait qu'elles doivent fonctionner dans le même environnement électromagnétique, ce qui engendre des problèmes de compatibilité. Cette discipline a été traitée jusqu'à présent en fin de développement d'un système, avant l'étape de la certification et de l'intégration sur avion. La prise en compte de ces contraintes dès la phase de conception, via l'estimation des perturbations électromagnétiques conduites et rayonnées par simulation, peut permettre d'importants gains de temps et de coûts en réduisant les phases d'essais. La première étape de ce projet de recherche est la mise en place d'une approche de modélisation compatible avec les processus d'optimisation. Il est alors indispensable de prendre en compte l'ensemble des sous-systèmes qui composent la chaîne électromécanique, à savoir les RSILs, les câbles, le convertisseur et le moteur. L'approche de modélisation choisie est de type directe ; elle consiste à représenter la chaîne électromécanique dans la base de mode commun par des quadripôles. Ce modèle générique permet d'estimer les courants de mode commun directement dans le domaine fréquentiel en différents points du système. Par ailleurs, afin d'être compétitif vis-à-vis des autres vecteurs d'énergie présents sur avion, la densité de puissance des systèmes électriques doit être drastiquement augmentée. L'introduction des semi conducteurs grands gaps à base de Carbure de Silicium (SiC) permet de contribuer à l'augmentation de la densité de puissance des électroniques de puissance. Cependant, dans ces travaux de thèse, nous veillons à la non régression des performances au niveau système et notamment vis-à-vis de l'impact des émissions électromagnétiques conduites de mode commun. Une fois les modèles en émission établis, diverses solutions de filtrage sont étudiées : filtrage passif externe et interne. Une démarche d'optimisation multi-objectifs (masse, pertes) et multi contraintes (qualité réseau, stabilité, CEM, thermique, etc.) est proposée. Des études de sensibilité mettent en évidence les variables de conception ayant le plus d'impact sur les émissions conduites. Cette approche permet le dimensionnement optimal des composants de l'onduleur (module de puissance, dissipateur, filtres de mode commun et de mode différentiel, paramètres de la commande rapprochée). Les résultats obtenus grâce à l'algorithme génétique employé permettent de construire des courbes de tendance utiles pour l'aide au dimensionnement.

Acoustics of Porous Media

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Publisher : Editions TECHNIP
ISBN 13 : 9782710805168
Total Pages : 366 pages
Book Rating : 4.8/5 (51 download)

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Book Synopsis Acoustics of Porous Media by : Thierry Bourbié

Download or read book Acoustics of Porous Media written by Thierry Bourbié and published by Editions TECHNIP. This book was released on 1987 with total page 366 pages. Available in PDF, EPUB and Kindle. Book excerpt:

The Science of metals

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ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (162 download)

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Book Synopsis The Science of metals by : Zay Jeffries

Download or read book The Science of metals written by Zay Jeffries and published by . This book was released on 1924 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

The Disappearing Computer

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Publisher : Springer
ISBN 13 : 3540727272
Total Pages : 314 pages
Book Rating : 4.5/5 (47 download)

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Book Synopsis The Disappearing Computer by : Norbert Streitz

Download or read book The Disappearing Computer written by Norbert Streitz and published by Springer. This book was released on 2007-07-20 with total page 314 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book examines how the computer, as we currently know it, will be replaced by a new generation of technologies, moving computing off the desktop and ultimately integrating it with real world objects and everyday environments. It provides a unique combination of concepts, methods and prototypes of ubiquitous and pervasive computing reflecting the current interest in smart environments and ambient intelligence.

Domestication Of Media And Technology

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Publisher : McGraw-Hill Education (UK)
ISBN 13 : 0335217680
Total Pages : 271 pages
Book Rating : 4.3/5 (352 download)

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Book Synopsis Domestication Of Media And Technology by : Berker, Thomas

Download or read book Domestication Of Media And Technology written by Berker, Thomas and published by McGraw-Hill Education (UK). This book was released on 2005-11-01 with total page 271 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides an overview of a key concept in media and technology studies: domestication. Theories around domestication shed light upon the process in which a technology changes its status from outrageous novelty to an aspect of everyday life which is taken for granted. The contributors collect past, current and future applications of the concept of domestication, critically reflect on its theoretical legacy, and offer comments about further development. The first part of Domestication of Media and Technology provides an overview of the conceptual development and theory of domestication. In the second part of the book, contributors look at a diverse range of empirical studies that use the domestication approach to examine the dynamics between users and technologies. These studies include: Mobile information and communications techologies (ICTs) and the transformation of the relationship between private and the public spheres Home-based internet use: the two-way dynamic between the household and its social environment Disadvantaged women in Europe undertaking introductory internet courses Urban middle-class families in China who embrace ICTs and view them as instruments of upward mobility and symbols of success The book offers valuable insights for both experienced researchers and students looking for an introduction to the concept of domestication. Contributors: Maria Bakardjieva, University of Calgary; Thomas Berker, Norwegian University of Science and Technology; Leslie Haddon, Essex University; Maren Hartmann, University of Erfurt; Deirdre Hynes, Dublin City University; Sun Sun Lim, National University of Singapore; Anna Maria Russo Lemor, University of Colorado at Boulder; David Morley, Goldsmiths College, University of London; Jo Pierson, TNO-STB, Delft, Netherlands; Yves Punie, Institute for Prospective Technological Studies (IPTS) in Seville; Els Rommes, Nijmegen University; Roger Silverstone, London School of Economics and Political Science; Knut H. Sørensen, Norwegian University of Science and Technology; Katie J. Ward, University of Sheffield.

Commercial Nuclear Power

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Publisher :
ISBN 13 :
Total Pages : 140 pages
Book Rating : 4.F/5 ( download)

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Book Synopsis Commercial Nuclear Power by :

Download or read book Commercial Nuclear Power written by and published by . This book was released on 1984 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Space-Time Coding for Broadband Wireless Communications

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Publisher : John Wiley & Sons
ISBN 13 : 047146287X
Total Pages : 488 pages
Book Rating : 4.4/5 (714 download)

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Book Synopsis Space-Time Coding for Broadband Wireless Communications by : Georgios B. Giannakis

Download or read book Space-Time Coding for Broadband Wireless Communications written by Georgios B. Giannakis and published by John Wiley & Sons. This book was released on 2007-02-26 with total page 488 pages. Available in PDF, EPUB and Kindle. Book excerpt: Eine vielversprechende Technologie zur Maximierung der Bandbreiteneffizienz in der breitbandigen drahtlosen Kommunikation ist die Raum-Zeit-Kodierung. Theorie und Praxis verbindend, ist dieses Buch die erste umfassende Diskussion von Grundlagen und designorientierten Aspekten von Raum-Zeit-Codes. Single-Carrier und Multi-Carrier-Übertragungen für Einzel- und Mehrnutzerkommunikation werden behandelt.

Modern Surface Organometallic Chemistry

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Publisher : John Wiley & Sons
ISBN 13 : 3527627103
Total Pages : 725 pages
Book Rating : 4.5/5 (276 download)

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Book Synopsis Modern Surface Organometallic Chemistry by : Jean-Marie Basset

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.

Flexoelectricity in Liquid Crystals

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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.

Mechanical Vibration

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ISBN 13 :
Total Pages : 728 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Mechanical Vibration by : William John Palm

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

Electric Machines and Drives

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Publisher : BoD – Books on Demand
ISBN 13 : 9533075481
Total Pages : 278 pages
Book Rating : 4.5/5 (33 download)

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Book Synopsis Electric Machines and Drives by : Miroslav Chomat

Download or read book Electric Machines and Drives written by Miroslav Chomat and published by BoD – Books on Demand. This book was released on 2011-02-28 with total page 278 pages. Available in PDF, EPUB and Kindle. Book excerpt: The subject of this book is an important and diverse field of electric machines and drives. The twelve chapters of the book written by renowned authors, both academics and practitioners, cover a large part of the field of electric machines and drives. Various types of electric machines, including three-phase and single-phase induction machines or doubly fed machines, are addressed. Most of the chapters focus on modern control methods of induction-machine drives, such as vector and direct torque control. Among others, the book addresses sensorless control techniques, modulation strategies, parameter identification, artificial intelligence, operation under harsh or failure conditions, and modelling of electric or magnetic quantities in electric machines. Several chapters give an insight into the problem of minimizing losses in electric machines and increasing the overall energy efficiency of electric drives.

Photovoltaic Engineering Handbook

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Publisher : CRC Press
ISBN 13 : 9780852743119
Total Pages : 576 pages
Book Rating : 4.7/5 (431 download)

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Book Synopsis Photovoltaic Engineering Handbook by : F Lasnier

Download or read book Photovoltaic Engineering Handbook written by F Lasnier and published by CRC Press. This book was released on 1990-01-01 with total page 576 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Photovoltaic Engineering Handbook is the first book to look closely at the practical problems involved in evaluating and setting up a photovoltaic (PV) power system. The author's comprehensive knowledge of the subject provides a wealth of theoretical and practical insight into the different procedures and decisions that designers need to make. Unique in its coverage, the book presents technical information in a concise and simple way to enable engineers from a wide range of backgrounds to initiate, assess, analyze, and design a PV system. It is beneficial for energy planners making decisions on the most appropriate system for specific needs, PV applications engineers, and anyone confronting the practical difficulties of setting up a PV power system.

Resilience and Urban Risk Management

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Publisher : CRC Press
ISBN 13 : 0203072820
Total Pages : 192 pages
Book Rating : 4.2/5 (3 download)

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Book Synopsis Resilience and Urban Risk Management by : Damien Serre

Download or read book Resilience and Urban Risk Management written by Damien Serre and published by CRC Press. This book was released on 2012-10-08 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt: Resilience and Urban Risk Management presents the latest progress made in designing resilient towns, and identifies leads to be explored for attaining the objective of systematically integrating risks into urban environments The aim of the book is to provide guidance in designing and planning future cities, and to create a new form of risk manageme

Sailing to the Reefs

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Publisher : Sheridan House, Inc.
ISBN 13 : 9781574091205
Total Pages : 308 pages
Book Rating : 4.0/5 (912 download)

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Book Synopsis Sailing to the Reefs by : Bernard Moitessier

Download or read book Sailing to the Reefs written by Bernard Moitessier and published by Sheridan House, Inc.. This book was released on 2001 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bernard Moitessier is a writer and one of France's most famous sailors.

Ventricular Wall Motion

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Publisher : Thieme-Stratton Corporation
ISBN 13 : 9780865771468
Total Pages : 327 pages
Book Rating : 4.7/5 (714 download)

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Book Synopsis Ventricular Wall Motion by : Ulrich Sigwart

Download or read book Ventricular Wall Motion written by Ulrich Sigwart and published by Thieme-Stratton Corporation. This book was released on 1984 with total page 327 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Building Wireless Community Networks

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Publisher : "O'Reilly Media, Inc."
ISBN 13 : 9780596005023
Total Pages : 190 pages
Book Rating : 4.0/5 (5 download)

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Book Synopsis Building Wireless Community Networks by : Rob Flickenger

Download or read book Building Wireless Community Networks written by Rob Flickenger and published by "O'Reilly Media, Inc.". This book was released on 2003 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt: Building Wireless Community Networks is about getting people online using wireless network technology. The 802.11b standard (also known as WiFi) makes it possible to network towns, schools, neighborhoods, small business, and almost any kind of organization. All that's required is a willingness to cooperate and share resources. The first edition of this book helped thousands of people engage in community networking activities. At the time, it was impossible to predict how quickly and thoroughly WiFi would penetrate the marketplace. Today, with WiFi-enabled computers almost as common as Ethernet, it makes even more sense to take the next step and network your community using nothing but freely available radio spectrum. This book has showed many people how to make their network available, even from the park bench, how to extend high-speed Internet access into the many areas not served by DSL and cable providers, and how to build working communities and a shared though intangible network. All that's required to create an access point for high-speed Internet connection is a gateway or base station. Once that is set up, any computer with a wireless card can log onto the network and share its resources. Rob Flickenger built such a network in northern California, and continues to participate in network-building efforts. His nuts-and-bolts guide covers: Selecting the appropriate equipment Finding antenna sites, and building and installing antennas Protecting your network from inappropriate access New network monitoring tools and techniques (new) Regulations affecting wireless deployment (new) IP network administration, including DNS and IP Tunneling (new) His expertise, as well as his sense of humor and enthusiasm for the topic, makes Building Wireless Community Networks a very useful and readable book for anyone interested in wireless connectivity.

The Nuclear Industry

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Publisher :
ISBN 13 :
Total Pages : 124 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis The Nuclear Industry by : U.S. Atomic Energy Commission. Division of Industrial Participation

Download or read book The Nuclear Industry written by U.S. Atomic Energy Commission. Division of Industrial Participation and published by . This book was released on 1974 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt: