Étude et réalisation de capteurs de courant hautes performances PDF Download
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Author: Virgil Popescu
Publisher:
ISBN:
Category :
Languages : fr
Pages : 212
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Author: Virgil Popescu
Publisher:
ISBN:
Category :
Languages : fr
Pages : 212
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Author: Patrick Poulichet
Publisher:
ISBN:
Category :
Languages : fr
Pages : 114
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Author: Patrick Poulichet
Publisher:
ISBN:
Category :
Languages : fr
Pages : 188
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Book Description
CE TRAVAIL TRAITE DE LA MODELISATION ET DE LA CONCEPTION DE CAPTEURS DE COURANT PERFORMANTS DESTINES AU DOMAINE DE L'ELECTRONIQUE DE PUISSANCE. DES MODELES ONT ETE CONCUS POUR OPTIMISER LES DIFFERENTES PARTIES DES CAPTEURS DE COURANT. DES SOLUTIONS ORIGINALES ONT ETE MISES EN UVRE POUR PARVENIR A CONSERVER UN FORT FACTEUR DE MERITE (PRODUIT I M A X X F H F). LES SONDES D'INSTRUMENTATION CONCUES ONT UNE PRECISION DE L'ORDRE DE QUELQUES POUR-CENT ET PEUVENT MESURER DES COURANTS DE L'ORDRE DE 100A DU CONTINU A 50MHZ. NOUS PRESENTONS LES DIFFERENTS PRINCIPES DE MESURE DE COURANT EN INSISTANT SUR LES METHODES UTILISANT UN TRANSFORMATEUR DE COURANT. UN CAPTEUR D'INDUCTION PLACE DANS L'ENTREFER DU CIRCUIT MAGNETIQUE EST ASSOCIE AU TRANSFORMATEUR DE COURANT AFIN D'ETENDRE SA BANDE PASSANTE EN BASSES FREQUENCES. UN CIRCUIT DE CORRECTION EST DETERMINE POUR LINEARISER LA BANDE PASSANTE DU DISPOSITIF. UN MODELE DE TYPE CIRCUIT DU TRANSFORMATEUR DE COURANT EST ETABLI POUR DETERMINER SA FREQUENCE HAUTE MAXIMALE D'UTILISATION. LES ELEMENTS MAGNETIQUES ET ELECTRIQUES DU MODELE SONT CALCULES A PARTIR DE SIMULATIONS PAR ELEMENTS FINIS. LA VARIATION DE L'IMPEDANCE DES CONDUCTEURS EST EGALEMENT DETERMINEE PAR ELEMENTS FINIS ET CE PHENOMENE EST INTEGRE DANS LE MODELE CIRCUIT. DE PLUS IL TIENT COMPTE DES PROPRIETES PHYSIQUES DU MATERIAU MAGNETIQUE. LA VALIDITE DE CES MODELES EST VERIFIEE PAR COMPARAISON ENTRE SIMULATIONS ET MESURES. LE MODELE EST ETABLI DANS TROIS CONFIGURATIONS : CONDUCTEUR DE MESURE CENTRE, CONDUCTEUR DE MESURE DECENTRE ET CAPTEUR INSERE DANS UN BLINDAGE. DES DIFFERENCES TRES IMPORTANTES SONT CONSTATEES LORS DES MESURES POUR CES TROIS CONFIGURATIONS. CES DIFFERENCES SONT BIEN REPRODUITES PAR SIMULATION. ENFIN NOUS VERIFIONS LES PERFORMANCES DES DIFFERENTS CAPTEURS DE COURANTS REALISES, PAR DES MESURES FAIBLES ET FORTS COURANTS.
Author:
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ISBN:
Category : Government publications
Languages : en
Pages : 908
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Author:
Publisher:
ISBN:
Category : Government reports announcements & index
Languages : en
Pages : 900
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Author: Willem Willems
Publisher:
ISBN: 9789088903861
Category : Business & Economics
Languages : en
Pages : 434
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Book Description
Water is vital for life, and its availability has been a concern for mankind throughout the ages. Its presence has always been ascertained in a variety of ways and the development of human society everywhere is connected with various forms of water management. Man also needed to manage water to find protection from its dangers and the need for that is increasing. In the coming decades, the impact of climate change is expected to intensify floods and droughts, affect groundwater resources, raise sea levels, increase pollution and enhance the frequency and magnitude of disasters. Societies around the world are challenged to adapt to these threats to ensure water security, economic prosperity and environmental and cultural sustainability. This book deals with the heritage of water management and the use that was made of water, as well as the impact of water management on heritage. An example of the former may be an ancient irrigation system in the Filipines or in the Middle East that still functions today, while the latter may reflect the importance of maintaining groundwater levels for the preservation of organic remains on archaeological sites or of wooden piles underneath standing buildings. In either case the papers in this book reflect the dynamic nature of water, and hence the equally dynamic relation between water management and heritage. This publication follows up on a Heritage and Water conference in Amsterdam, the first of its kind. Its main purpose is to credibly present the importance and value of heritage and historical experience for water and sustainable development, and vice versa, present the importance of water management for the protection of heritage. It presents evolving insights and concepts about Water and about Heritage from a variety of disciplines, policy and public perspectives illustrated with cases studies and aims to connect decision makers with experts such as engineers, archaeologists, historians, geographers, ecologist and landscape architects
Author: International Institute of Refrigeration
Publisher:
ISBN:
Category : Refrigeration and refrigerating machinery
Languages : fr
Pages : 806
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Book Description
Some numbers called Special issue and consist of summaries of papers to be presented at the International Congresses of Refrigeration.
Author: Robert C. Hansen
Publisher:
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 472
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Author: Robert G. Arno
Publisher:
ISBN:
Category : Reliability (Engineering)
Languages : en
Pages : 276
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Book Description
This report, organized in four major sections, presents reliability information based on field operation, dormant state and test data for more than 250 major nonelectronic part types. The four sections are Generic Data, Detailed Data, Application Data, and failure Modes and Mechanisms. Each device type contains reliability information in relation to the specific operational environments. (Author).
Author: Ahmed Belasri
Publisher: Springer Nature
ISBN: 9811554447
Category : Technology & Engineering
Languages : en
Pages : 659
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Book Description
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.
