Download or read book Contribution au diagnostic des syst mes de conversion lectrique written by Hiba Al-Sheikh and published by . This book was released on 2015 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt: Les progrès récents dans l'électronique de puissance ont joué un rôle majeur dans l'évolution de véhicules électriques hybrides. Aujourd'hui, les convertisseurs statiques sont largement utilisés dans les véhicules hybrides pour convertir l'alimentation à différents niveaux afin de contrôler le véhicule aux différents points de fonctionnement souhaités. Avec cette utilisation croissante des convertisseurs statiques dans les véhicules hybrides modernes augmente le besoin de méthodes efficaces de surveillance et de diagnostic de panne pour assurer la fiabilité, la sécurité et la disponibilité du groupe motopropulseur électrique automobile. Ainsi, cette thèse contribue au diagnostic de défauts des systèmes de convertisseurs de puissance. L'objectif est d’élaborer une stratégie de diagnostic approprié avec application à un convertisseur DC / DC à l’interface d'un système de stockage d'énergie hybride, batterie / supercondensateur, et la chaîne de traction électrique dans un véhicule électrique hybride. En premier temps, une approche de diagnostic de défauts capteurs par un banc de filtres de Kalman pour un système à commutations a été proposée. Pour la détection, un test GLR avec un seuillage utilisant les courbes ROC visant à diminuer la probabilité de fausses alarmes et augmenter la probabilité de bonne détection est proposé. En deuxième temps, les mesures existantes ont été aussi utilisées dans un schéma de traitement du signal sans modèle pour détecter et identifier les défauts de semiconducteurs de puissance du convertisseur utilisé. Enfin, les approches proposées ont été testées sur un prototype réalisé du convertisseur étudié.

Download or read book Hybridization Diagnostic and Prognostic of PEM Fuel Cells written by Samir Jemei and published by John Wiley & Sons. This book was released on 2018-10-22 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hydrogen is the most abundant element in the universe. It has a place in the energy mix of the future, especially regarding fuel cells (FCs). This book is an investigation into FCs. Prominence is given to the subject of PEMFCs (proton exchange membrane fuel cells) as they offer interesting perspectives on transport and stationary applications. This being said, a number of technological and scientific obstacles remain to be overcome before an industrial level of development can be reached.

Download or read book Contribution l tude de syst mes d un conversion d nergie non lin aire et de leur impact sur le re dimensionnement des machines lectriques written by Simon Morel and published by . This book was released on 2019 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dans un contexte d'électrification massive de nos modes de vie (Transports, Industrie, activités tertiaires), des structures de conversion d'énergie toujours plus performantes ( en terme de sobriété, d'efficacité ou ayant un moindre impact sur l'environnement) sont recherchées. Limitées par l'accès et l'utilisation de matériaux rares ou polluants mais également par leurs coûts de mise en œuvre, nos technologies ont été constamment améliorées et optimisées depuis un siècle mais atteignent aujourd'hui une asymptote. De nouvelles technologies en rupture présentent un moyen de faire des bonds significatifs dans cette évolution mais demandent à être découvertes, analysées, modélisées, vérifiées et mises en valeur par les laboratoires de recherche pour être intégrées par le monde industriel. Cette thèse porte sur l'étude, la modélisation et le dimensionnement d'un système innovant et original associant une électronique de puissance non-linéaire et une machine électrique. Cette technologie, encore très peu étudiée aujourd'hui, offre de nouveaux degrés de liberté dans la conception de la chaine de conversion électromécanique pour la génération d'électricité ou la motorisation par exemple.Ce travail ambitionne donc de proposer une lecture claire du fonctionnement non linéaire de la chaine de conversion proposée et d'en comprendre les bénéfices mais aussi les limites et les coûts. Par non-linéaire, on entend ici que ces systèmes sont capables de modifier la topologie profonde ou fondamentale du circuit ou système dans lequel ils sont mis en œuvre et sont capables d'agir sur la dynamique des tensions et courants. Ils peuvent ainsi agir sur la gestion de l'énergie réactive, le facteur de puissance mais aussi sur les niveaux de tensions et courants et par extension de la puissance active et d'en garantir le contrôle.Le travail synthétisé dans ce manuscrit permet dans un premier temps de recenser les rares exemples adoptant cette philosophie et d'en jeter les bases, permettant à différentes topologies inédites d'y être identifiées. Dans un second volet, une méthodologie de modélisation en phase d'esquisse du système entier est présentée et testée permettant de mener des simulations et des dimensionnements. Fort de cette méthode, un troisième volet conceptuel porte sur son application aux machines électriques et démontre les nouveaux compromis et nouvelles performances possibles, comme l'augmentation sensible des performances mécaniques ou la réduction du volume d'aimant nécessaire. Enfin, un dernier volet expérimental permet de vérifier en pratique les différents résultats théoriques grâce à la mise en place d'un banc d'essai à échelle industrielle.

Download or read book Electrochemical Components written by Marie-Cécile Pera and published by John Wiley & Sons. This book was released on 2013-08-02 with total page 251 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book focuses on the methods of storage commonly used in hybrid systems. After an introductory chapter reviewing the basics of electrochemistry, Chapter 2 is given over to the storage of electricity in the form of hydrogen. Once hydrogen has been made, we have to be able to convert it back into electricity on demand. This can be done with another energy converter: a fuel cell, the subject of Chapter 3. Such a system is unable to deliver significant dynamics in terms of storage and release of electricity and needs to be supplemented with another solution: a detailed study of supercapacitors is provided in Chapter 4.While the storage systems touched upon in the previous three chapters (hydrogen batteries and supercapacitors) both exhibit advantageous characteristics, at present they are still relatively costly. Thus, the days of the electrochemical accumulator by no means appear to be numbered just yet. This will therefore be the topic of Chapter 5. Finally, on the basis of the elements laid down in the previous chapters, Chapter 6 will focus on electrical hybridization of these storage systems, with a view to enhancing the performance (in terms of energy, lifetime, cost, etc.) of the newly formed system. Aimed at an audience of researchers, industrialists, academics, teachers and students, many exercises, along with corrected solutions, are provided throughout the book. Contents 1. Basic Concepts of Electrochemistry used in Electrical Engineering. 2. Water Electrolyzers. 3. Fuel Cells. 4. Electrical Energy Storage by Supercapacitors. 5. Electrochemical Accumulators. 6. Hybrid Electrical System. About the Authors Marie-Cécile Péra is a Full Professor at the University of Franche-Comte in France and Deputy Director of the FEMTO-ST Institute (CNRS). Her research activities include modeling, control and diagnosis of electric power generation systems (fuel cells – PEMFC and SOFC, supercapacities, batteries) for transportation and stationary applications. She has contributed to more than 180 articles in international journals and conferences. Daniel Hissel is Full Professor at the University of Franche-Comte in France and Director of the Fuel Cell Lab Research Federation (CNRS). He also leads a research team devoted to hybrid electrical systems in the FEMTO-ST Institute (CNRS). He has published more than 250 research papers on modeling, control, diagnostics and prognostics of hybrid electrical systems. Hamid Gualous is Full Professor at the University of Caen Lower Normandy in France and director of the LUSAC laboratory. His current research interests include power electronics, electric energy storage, power and energy systems and energy management. Christophe Turpin is Full Researcher at the CNRS (French National Center for Scientific Research). He is responsible for hydrogen activities within the Laboratory LAPLACE, Toulouse, France. His research activities include the characterization and modeling of fuel cells and electrolyzers, the state of health of these components, and their hybridization with other electrochemical components (ultracapacitors, batteries) within optimized energy systems for stationary and aeronautical applications.

Download or read book Modeling of Turbomachines for Control and Diagnostic Applications written by Igor Loboda and published by BoD – Books on Demand. This book was released on 2020-05-27 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents new studies in the area of turbomachine mathematical modeling with a focus on models applied to developing engine control and diagnostic systems. The book contains one introductory and four main chapters. The introductory chapter describes the area of modeling of gas and wind turbines and shows the demand for further improvement of the models. The first three main chapters offer particular improvements in gas turbine modeling. First, a novel methodology for the modeling of engine starting is presented. Second, a thorough theoretical comparative analysis is performed for the models of engine internal gas capacities, and practical recommendations are given on model applications, in particular for engine control purposes. Third, multiple algorithms for calculating important unmeasured parameters for engine diagnostics are proposed and compared. It is proven that the best algorithms allow accurate prognosis of engine remaining lifetime.The field of wind turbine modeling is presented in the last main chapter. It introduces a general-purpose model that describes both aerodynamic and electric parts of a wind power plant. Such a detailed physics-based model will help with the development of more accurate control and diagnostic systems.In this way, this book includes four new studies in the area of gas and wind turbine modeling. These studies will be interesting and useful for specialists in turbine engine control and diagnostics.

Download or read book Electrical Machines Diagnosis written by Jean-Claude Trigeassou and published by John Wiley & Sons. This book was released on 2013-02-07 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt: Monitoring and diagnosis of electrical machine faults is a scientific and economic issue which is motivated by objectives for reliability and serviceability in electrical drives. This book provides a survey of the techniques used to detect the faults occurring in electrical drives: electrical, thermal and mechanical faults of the electrical machine, faults of the static converter and faults of the energy storage unit. Diagnosis of faults occurring in electrical drives is an essential part of a global monitoring system used to improve reliability and serviceability. This diagnosis is performed with a large variety of techniques: parameter estimation, state observation, Kalman filtering, spectral analysis, neural networks, fuzzy logic, artificial intelligence, etc. Particular emphasis in this book is put on the modeling of the electrical machine in faulty situations. Electrical Machines Diagnosis presents original results obtained mainly by French researchers in different domains. It will be useful as a guideline for the conception of more robust electrical machines and indeed for engineers who have to monitor and maintain electrical drives. As the monitoring and diagnosis of electrical machines is still an open domain, this book will also be very useful to researchers.

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.

Download or read book Fault Detection and Diagnosis in Industrial Systems written by L.H. Chiang and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 281 pages. Available in PDF, EPUB and Kindle. Book excerpt: Early and accurate fault detection and diagnosis for modern chemical plants can minimize downtime, increase the safety of plant operations, and reduce manufacturing costs. This book presents the theoretical background and practical techniques for data-driven process monitoring. It demonstrates the application of all the data-driven process monitoring techniques to the Tennessee Eastman plant simulator, and looks at the strengths and weaknesses of each approach in detail. A plant simulator and problems allow readers to apply process monitoring techniques.

Download or read book The Science of Hair Care Second Edition written by CLAUDE. BOUILLON and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Solar Photovoltaic System Applications written by Parimita Mohanty and published by Springer. This book was released on 2015-10-30 with total page 191 pages. Available in PDF, EPUB and Kindle. Book excerpt: Presenting a complete guide for the planning, design and implementation of solar PV systems for off-grid applications, this book features analysis based on the authors’ own laboratory testing as well as their in the field experiences. Incorporating the latest developments in smart-digital and control technologies into the design criteria of the PV system, this book will also focus on how to integrate newer smart design approaches and techniques for improving the efficiency, reliability and flexibility of the entire system. The design and implementation of India’s first-of its-kind Smart Mini-Grid system (SMG) at TERI premises, which involves the integration of multiple renewable energy resources (including solar PV) through smart controllers for managing the load intelligently and effectively is presented as a key case study. Maximizing reader insights into the performance of different components of solar PV systems under different operating conditions, the book will be of interest to graduate students, researchers, PV designers, planners, and practitioners working in the area of solar PV design, implementation and assessment.

Download or read book Wind Power in Power Systems written by Thomas Ackermann and published by John Wiley & Sons. This book was released on 2012-04-23 with total page 1132 pages. Available in PDF, EPUB and Kindle. Book excerpt: The second edition of the highly acclaimed Wind Power in Power Systems has been thoroughly revised and expanded to reflect the latest challenges associated with increasing wind power penetration levels. Since its first release, practical experiences with high wind power penetration levels have significantly increased. This book presents an overview of the lessons learned in integrating wind power into power systems and provides an outlook of the relevant issues and solutions to allow even higher wind power penetration levels. This includes the development of standard wind turbine simulation models. This extensive update has 23 brand new chapters in cutting-edge areas including offshore wind farms and storage options, performance validation and certification for grid codes, and the provision of reactive power and voltage control from wind power plants. Key features: Offers an international perspective on integrating a high penetration of wind power into the power system, from basic network interconnection to industry deregulation; Outlines the methodology and results of European and North American large-scale grid integration studies; Extensive practical experience from wind power and power system experts and transmission systems operators in Germany, Denmark, Spain, UK, Ireland, USA, China and New Zealand; Presents various wind turbine designs from the electrical perspective and models for their simulation, and discusses industry standards and world-wide grid codes, along with power quality issues; Considers concepts to increase penetration of wind power in power systems, from wind turbine, power plant and power system redesign to smart grid and storage solutions. Carefully edited for a highly coherent structure, this work remains an essential reference for power system engineers, transmission and distribution network operator and planner, wind turbine designers, wind project developers and wind energy consultants dealing with the integration of wind power into the distribution or transmission network. Up-to-date and comprehensive, it is also useful for graduate students, researchers, regulation authorities, and policy makers who work in the area of wind power and need to understand the relevant power system integration issues.

Download or read book Government Reports Annual Index written by and published by . This book was released on 1985 with total page 1022 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Invention of Hysteria written by Georges Didi-Huberman and published by MIT Press. This book was released on 2004-09-17 with total page 387 pages. Available in PDF, EPUB and Kindle. Book excerpt: The first English-language publication of a classic French book on the relationship between the development of photography and of the medical category of hysteria. In this classic of French cultural studies, Georges Didi-Huberman traces the intimate and reciprocal relationship between the disciplines of psychiatry and photography in the late nineteenth century. Focusing on the immense photographic output of the Salpetriere hospital, the notorious Parisian asylum for insane and incurable women, Didi-Huberman shows the crucial role played by photography in the invention of the category of hysteria. Under the direction of the medical teacher and clinician Jean-Martin Charcot, the inmates of Salpetriere identified as hysterics were methodically photographed, providing skeptical colleagues with visual proof of hysteria's specific form. These images, many of which appear in this book, provided the materials for the multivolume album Iconographie photographique de la Salpetriere. As Didi-Huberman shows, these photographs were far from simply objective documentation. The subjects were required to portray their hysterical "type"—they performed their own hysteria. Bribed by the special status they enjoyed in the purgatory of experimentation and threatened with transfer back to the inferno of the incurables, the women patiently posed for the photographs and submitted to presentations of hysterical attacks before the crowds that gathered for Charcot's "Tuesday Lectures." Charcot did not stop at voyeuristic observation. Through techniques such as hypnosis, electroshock therapy, and genital manipulation, he instigated the hysterical symptoms in his patients, eventually giving rise to hatred and resistance on their part. Didi-Huberman follows this path from complicity to antipathy in one of Charcot's favorite "cases," that of Augustine, whose image crops up again and again in the Iconographie. Augustine's virtuosic performance of hysteria ultimately became one of self-sacrifice, seen in pictures of ecstasy, crucifixion, and silent cries.

Download or read book Green Cities of Europe written by Timothy Beatley and published by Island Press. This book was released on 2012-05-15 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the absence of federal leadership, states and localities are stepping forward to address critical problems like climate change, urban sprawl, and polluted water and air. Making a city fundamentally sustainable is a daunting task, but fortunately, there are dynamic, innovative models outside U.S. borders. Green Cities of Europe draws on the world's best examples of sustainability to show how other cities can become greener and more livable. Timothy Beatley has brought together leading experts from Paris, Freiburg, Copenhagen, Helsinki, Heidelberg, Venice, Vitoria-Gasteiz, and London to illustrate groundbreaking practices in sustainable urban planning and design. These cities are developing strong urban cores, building pedestrian and bicycle infrastructure, and improving public transit. They are incorporating ecological design and planning concepts, from solar energy to natural drainage and community gardens. And they are changing the way government works, instituting municipal "green audits" and reforming economic incentives to encourage sustainability. Whatever their specific tactics, these communities prove that a holistic approach is needed to solve environmental problems and make cities sustainable. Beatley and these esteemed contributors offer vital lessons to the domestic planning community about not only what European cities are doing to achieve that vision, but precisely how they are doing it. The result is an indispensable guide to greening American cities. Contributors include: Lucie Laurian (Paris) Dale Medearis and Wulf Daseking (Freiburg) Michaela Brüel (Copenhagen) Maria Jaakkola (Helsinki) Marta Moretti (Venice) Luis Andrés Orive and Rebeca Dios Lema (Vitoria-Gasteiz) Camilla Ween (London)

Download or read book Accuracy in Spectrophotometry and Luminescence Measurements written by Radu Mavrodineanu and published by . This book was released on 1973 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Renewable Energy for Smart and Sustainable Cities written by Mustapha Hatti and published by Springer. This book was released on 2018-11-23 with total page 571 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book features cutting-edge research presented at the second international conference on Artificial Intelligence in Renewable Energetic Systems, IC-AIRES2018, held on 24–26 November 2018, at the High School of Commerce, ESC-Koléa in Tipaza, Algeria. Today, the fundamental challenge of integrating renewable energies into the design of smart cities is more relevant than ever. While based on the advent of big data and the use of information and communication technologies, smart cities must now respond to cross-cutting issues involving urban development, energy and environmental constraints; further, these cities must also explore how they can integrate more sustainable energies. Sustainable energies are a major determinant of smart cities’ longevity. From an environmental and technological standpoint, these energies offer an optimal power supply to the electric network while creating significantly less pollution. This requires flexibility, i.e., the availability of supply and demand. The end goal of any smart city is to improve the quality of life for all citizens (both in the city and in the countryside) in a way that is sustainable and respectful of the environment. This book encourages the reader to engage in the preservation of our environment, every moment, every day, so as to help build a clean and healthy future, and to think of the future generations who will one day inherit our planet. Further, it equips those whose work involves energy systems and those engaged in modelling artificial intelligence to combine their expertise for the benefit of the scientific community and humanity as a whole.

Download or read book Fundamentals of Instrumentation and Measurement written by Dominique Placko and published by John Wiley & Sons. This book was released on 2013-03-01 with total page 369 pages. Available in PDF, EPUB and Kindle. Book excerpt: This title presents the general principles of instrumentation processes. It explains the theoretical analysis of physical phenomena used by standard sensors and transducers to transform a physical value into an electrical signal. The pre-processing of these signals through electronic circuits – amplification, signal filtering and analog-to-digital conversion – is then detailed, in order to provide useful basic information. Attention is then given to general complex systems. Topics covered include instrumentation and measurement chains, sensor modeling, digital signal processing and diagnostic methods and the concept of smart sensors, as well as microsystem design and applications. Numerous industrial examples punctuate the discussion, setting the subjects covered in the book in their practical context.