Download or read book Hybrid Excited Synchronous Machines written by Yacine Amara and published by John Wiley & Sons. This book was released on 2023-01-12 with total page 244 pages. Available in PDF, EPUB and Kindle. Book excerpt: Our transition towards a cleaner and more sustainable future has seen an increase in the use of electrical energy in the functioning of our society. This implies the need to develop tools and methods which allow us to study electromagnetic devices and ensure their functioning for as long as possible. This requires us to use these tools to understand their behavior, not just as one component, but also in the entire systems in which they can be found, throughout their life cycle. This book provides electrical engineering students and researchers with the resources to analyze how synchronous machines behave over their entire field of operation, particularly focusing on hybrid excited synchronous machines (HESMs). The field of HESMs, although not a fundamental problem in the strict sense of the term, provides answers to a range of fundamental problems: the flux weakening of permanent magnet machines, energy optimization, and lastly the increasing costs of rare-earths permanent magnets.

Download or read book Control of Non conventional Synchronous Motors written by Jean-Paul Louis and published by John Wiley & Sons. This book was released on 2013-02-04 with total page 303 pages. Available in PDF, EPUB and Kindle. Book excerpt: Classical synchronous motors are the most effective device to drive industrial production systems and robots with precision and rapidity. However, numerous applications require efficient controls in non-conventional situations. Firstly, this is the case with synchronous motors supplied by thyristor line-commutated inverters, or with synchronous motors with faults on one or several phases. Secondly, many drive systems use non-conventional motors such as polyphase (more than three phases) synchronous motors, synchronous motors with double excitation, permanent magnet linear synchronous motors, synchronous and switched reluctance motors, stepping motors and piezoelectric motors. This book presents efficient controls to improve the use of these non-conventional motors. Contents 1. Self-controlled Synchronous Motor: Principles of Function and Simplified Control Model, Francis Labrique and François Baudart. 2. Self-controlled Synchronous Motor: Dynamic Model Including the Behavior of Damper Windings and Commutation Overlap, Ernest Matagne. 3. Synchronous Machines in Degraded Mode, Damien Flieller, Ngac Ky Nguyen, Hervé Schwab and Guy Sturtzer. 4. Control of the Double-star Synchronous Machine Supplied by PWM Inverters, Mohamed Fouad Benkhoris. 5. Vectorial Modeling and Control of Multiphase Machines with Non-salient Poles Supplied by an Inverter, Xavier Kestelyn and Éric Semail. 6. Hybrid Excitation Synchronous Machines, Nicolas Patin and Lionel Vido. 7. Advanced Control of the Linear Synchronous Motor, Ghislain Remy and Pierre-Jean Barre. 8. Variable Reluctance Machines: Modeling and Control, Mickael Hilairet, Thierry Lubin and Abdelmounaïm Tounzi. 9. Control of the Stepping Motor, Bruno Robert and Moez Feki . 10. Control of Piezoelectric Actuators, Frédéric Giraud and Betty Lemaire-Semail.

Download or read book Mathematical Models for the Design of Electrical Machines written by Frédéric Dubas and published by MDPI. This book was released on 2021-03-15 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a comprehensive set of articles reflecting the latest advances and developments in mathematical modeling and the design of electrical machines for different applications. The main models discussed are based on the: i) Maxwell–Fourier method (i.e., the formal resolution of Maxwell’s equations by using the separation of variables method and the Fourier’s series in 2-D or 3-D with a quasi-Cartesian or polar coordinate system); ii) electrical, thermal and magnetic equivalent circuit; iii) hybrid model. In these different papers, the numerical method and the experimental tests have been used as comparisons or validations.

Download or read book Machines synchrones Excitation written by Wetzer and published by . This book was released on with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Control of Multiphase Machines and Drives written by Federico Barrero and published by MDPI. This book was released on 2020-01-24 with total page 146 pages. Available in PDF, EPUB and Kindle. Book excerpt: With the growing interest in electrical machines in recent times, the multiphase machine field has developed into a fascinating research area. Their intrinsic features (power splitting, better fault tolerance, or lower torque ripple) make them an appealing competitor to conventional three-phase machines. Multiphase electric drives have been recently used in applications where fault tolerance and continuous operation of the drive are required. However, the difficulties in extending the three-phase conventional current regulation and control structure to multiphase systems still limit their broad applicability in industry solutions. The main objective of this book is to illustrate new advances, developments, and applications in the field of multiphase machines and drives, while exposing these advances, developments, and applications to the scientific community and industry.

Download or read book Machines synchrones double excitation written by Yacine Amara and published by ISTE Group. This book was released on 2023-03-01 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt: La transition vers des usages propres et pérennes de l’énergie nécessite de développer des outils et des méthodes permettant d’étudier les objets électrotechniques afin d’assurer leur bon fonctionnement, et ce, le plus longtemps possible. Il faut pour cela disposer d’outils permettant d’appréhender leurs comportements, en tant que composant, mais aussi dans les systèmes où ils se trouvent, sur l’ensemble de leur cycle de vie. Machines synchrones à double excitation présente les outils nécessaires aux chercheurs, aux étudiants et aux ingénieurs en génie électrique pour analyser le fonctionnement des machines synchrones sur l’ensemble du plan d’opération. L’accent est mis sur les machines synchrones à double excitation (MSDE). La thématique des MSDE permet d’apporter des réponses à des problématiques fondamentales telles que le « défluxage » des machines à aimants permanents, l’optimisation énergétique, et enfin l’augmentation du coût des aimants permanents.

Download or read book Analysis of Synchronous Machines Second Edition written by T.A. Lipo and published by CRC Press. This book was released on 2012-06-25 with total page 608 pages. Available in PDF, EPUB and Kindle. Book excerpt: Analysis of Synchronous Machines, Second Edition is a thoroughly modern treatment of an old subject. Courses generally teach about synchronous machines by introducing the steady-state per phase equivalent circuit without a clear, thorough presentation of the source of this circuit representation, which is a crucial aspect. Taking a different approach, this book provides a deeper understanding of complex electromechanical drives. Focusing on the terminal rather than on the internal characteristics of machines, the book begins with the general concept of winding functions, describing the placement of any practical winding in the slots of the machine. This representation enables readers to clearly understand the calculation of all relevant self- and mutual inductances of the machine. It also helps them to more easily conceptualize the machine in a rotating system of coordinates, at which point they can clearly understand the origin of this important representation of the machine. Provides numerical examples Addresses Park’s equations starting from winding functions Describes operation of a synchronous machine as an LCI motor drive Presents synchronous machine transient simulation, as well as voltage regulation Applying his experience from more than 30 years of teaching the subject at the University of Wisconsin, author T.A. Lipo presents the solution of the circuit both in classical form using phasor representation and also by introducing an approach that applies MathCAD®, which greatly simplifies and expands the average student’s problem-solving capability. The remainder of the text describes how to deal with various types of transients—such as constant speed transients—as well as unbalanced operation and faults and small signal modeling for transient stability and dynamic stability. Finally, the author addresses large signal modeling using MATLAB®/Simulink®, for complete solution of the non-linear equations of the salient pole synchronous machine. A valuable tool for learning, this updated edition offers thoroughly revised content, adding new detail and better-quality figures.

Download or read book ELECTRIMACS 2022 written by Serge Pierfederici and published by Springer Nature. This book was released on with total page 322 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Synchronous Machines written by Mulukutla S. Sarma and published by Taylor & Francis. This book was released on 1979-01-01 with total page 582 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Conception et r alisation d une machine synchrone double excitation written by Daniel Fodorean and published by . This book was released on 2005 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt: Un nombre croissant d'industriels et d'organismes de recherche tentent de trouver des solutions technologiques innovantes permettant une meilleure gestion de l'energie. Les machines synchrones à double excitation (MSDE) sont parmi les solutions les plus intéressantes qui ne cessent d'immerger dans cette perspective. Mon travail de thèse s'inscrit dans le cadre de la conception d'une MSDE destinée a l'entrainement électromécanique direct. Une MSDE a été dimensionnée, réalisée et testée. Un rapport de gain en vitesse de 3 a été atteint ce qui est bon au regard des structures du même type actuellement publiées dans la littérature. Le travail mené s'est d'abord orienté vers l'étude bibliographique de la problématique de la thèse (le vehicule électrique), le cahier des charges dimensionnant de sa motorisation et les différentes solutions envisageables pour l'entraînement direct. L'étude comparative de ces solutions nous a justifié le choix des MSDE en général et en particulier la structure proposée : MSDE de série avec la bobine auxiliaire placée au rotor. Ensuite nous avons developpé les modèles analytiques (par réseaux de reluctances) d'une part et numérique par élément fini couplé à matlab/simulink d'autre part. Ces derniers ont été utilisés avec succès. Dans un deuxième temps nous avons voulu étudier en grandeur nature la solution proposée et cela à travers la réalisation d'un prototype de MSDE. Pour des raisons économiques nous avons juste réalisé le rotor sur mesure d'un stator que nous avons recupéré d'une machine à induction dont la puissance est 5.5kw. Les tests pratiques sont encourageants tant au niveau des paramètres physiques qu'au niveau des performances du défluxage.

Download or read book Synchronous Machines written by Charles Concordia and published by . This book was released on 1951 with total page 480 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book tude d une machine synchrone double excitation written by Sami Hlioui and published by . This book was released on 2008 with total page 171 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dans le cadre de la motorisation électrique des véhicules dits « propres » (tels que les véhicules hybrides) où le cahier des charges est difficile à satisfaire, une dizaine d’équipes dans le monde prospectent des topologies de machines synchrones qui permettraient de combiner la souplesse de fonctionnement de la machine synchrone à excitation bobinée aux avantages de la machine synchrone à aimants permanents. Parmi ces structures, nous trouvons la Machine Synchrone à Aimants Permanents à Concentration de Flux et à Double Excitation (MSAPConFDE) qui fait l’objet des travaux de recherche présentés dans cette thèse réalisée dans le cadre d’une coopération interuniversitaire entre le laboratoire SET de l’Université de Technologie de Belfort-Montbéliard et le laboratoire SATIE de l’Ecole Normale Supérieure de Cachan. On s’est intéressé, en premier lieu, à l’étude par la méthode des éléments finis de cette structure. Les modèles prennent en compte l’aspect tridimensionnel de la MSAPConFDE, l’anisotropie du feuilletage et la saturation magnétique. Ils ont permis d’approfondir la compréhension des phénomènes qui régissent le fonctionnement d’une telle structure et d’analyser les différents trajets de flux. En second lieu, des modèles réluctants ont été établis. Les trajets de flux tridimensionnels, la saturation magnétique et les différents trajets de fuites ont été pris en compte. Finalement, ces modèles ont été exploités dans une démarche de pré-dimensionnement optimal basée sur l’algorithme génétique. Les résultats obtenus nous encouragent à enrichir l’outil de pré-dimensionnement par de nouveaux modèles de machines synchrones et par différents algorithmes d’optimisation.

Download or read book Control of Synchronous Motors written by Jean-Paul Louis and published by John Wiley & Sons. This book was released on 2013-02-07 with total page 340 pages. Available in PDF, EPUB and Kindle. Book excerpt: Synchronous motors are indubitably the most effective device to drive industrial production systems and robots with precision and rapidity. Their control law is thus critical for combining at the same time high productivity to reduced energy consummation. As far as possible, the control algorithms must exploit the properties of these actuators. Therefore, this work draws on well adapted models resulting from the Park’s transformation, for both the most traditional machines with sinusoidal field distribution and for machines with non-sinusoidal field distribution which are more and more used in industry. Both, conventional control strategies like vector control (either in the synchronous reference frame or in the rotor frame) and advanced control theories like direct control and predictive control are thoroughly presented. In this context, a significant place is reserved to sensorless control which is an important and critical issue in tomorrow’s motors.

Download or read book Etude et Optimisation d une Machine Synchrone Double Excitation written by Daanoune Abdeljalil and published by Presses Academiques Francophones. This book was released on 2013-01 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dans un contexte ou la question de la preservation de l'environnement est devenue un sujet societal majeur, la recherche de nouvelles technologies pour remplacer la voiture a essence constitue un veritable enjeu industriel. Les vehicules hybrides et electriques sont une alternative prometteuse aux vehicules conventionnels. Ce travail porte sur la conception et l'optimisation des machines electriques pour la motorisation de ces voitures. Au cours de ces travaux, nous avons developpe une nouvelle methodologie de dimensionnement et d'optimisation des machines synchrones a double excitation. L'interet de cette methode est son bon compromis entre la precision et le temps de calcul et sa capacite d'adaptation a plusieurs types de machines. Le second volet de ce livre est consacre a la proposition d'une nouvelle structure de machine synchrone a rotor bobine. Une technique originale de compensation de la reaction magnetique d'induit est mise en place, elle consiste en l'insertion d'aimants secondaires permettant de creer un flux dans l'axe q de la machine. Ce dernier a pour role d'affaiblir le flux de la reaction magnetique d'induit.

Download or read book Term Variation in Specialised Corpora written by Béatrice Daille and published by John Benjamins Publishing Company. This book was released on 2017-08-07 with total page 286 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book addresses term variation which has been a very important topic in terminology, computational terminology and natural language processing for up to twenty years. This book presents the first complete inventory of term variants and the linguistic procedures that lead to their formation. It also takes into account issues raised by multilingual applications and presents ways to detect variants in five different languages: French, English, German, Spanish and Russian. The book provides insights into the following issues: What is a variant? What are the main linguistic mechanisms involved in the transformation of base terms into variants? How can variants be automatically detected in texts? Should variation be taken into account in natural language processing applications? This book is targeted at terminologists and linguists interested in term variation as well as researchers in natural language processing and computer science that must handle term variants in different kinds of applications.

Download or read book Canadian Electrical Engineering Journal written by and published by . This book was released on 1983 with total page 572 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Power System Analysis written by J.C. Das and published by CRC Press. This book was released on 2002-04-17 with total page 880 pages. Available in PDF, EPUB and Kindle. Book excerpt: Featuring extensive calculations and examples, this reference discusses theoretical and practical aspects of short-circuit currents in ac and dc systems, load flow, and harmonic analyses to provide a sound knowledge base for modern computer-based studies that can be utilized in real-world applications. Presenting more than 2300 figures, tables, and