Elektriske motorer

This book, drawing on fresh scholarship, investigates electrification in new places and across different time periods. While much of our understanding of electrification as a historical process is based on the seminal work done by Thomas P. Hughes in Networks of Power (1983), the scholars in this volume expand and revise Hughes¿ systems approach to suggest that electrification is a heterogeneous and contingent process. Moreover, the contributors suggest that the conquest of the world by electricity remains incomplete despite more than a century elapsing. Above all, though, this book provides context for thinking about what lies ahead as humans continue their conquest of the earth through electricity. As we become increasingly dependent on electricity to power our lights, heat and cool our homes, turn the wheels of industry, and keep our information systems humming, so we are ever more vulnerable when the grid runs into trouble.Chapter "Surveying the Landscape: The Oil Industry and Alternative Energy in the 1970s" is available open access under a Creative Commons Attribution 4.0 International License via link.springer.com.

In diesem Buch werden die Grundlagen für die Ermittlung von Kurzschlussströmen behandelt. Die Berechnung der Ströme gehört mit zu den wesentlichen Aufgaben bei der Planung elektrischer Netze. Da die Netze zuverlässig und sicher betrieben werden müssen, ist die Berechnung durch internationale und nationale Normen standardisiert. In der gültigen IEC/VDE-Norm werden konkrete Rechenverfahren angewendet, die sich in vielen Jahrzehnten bewährt haben. Hierbei werden neue technische Entwicklungen laufend ergänzt. Vielfach sind jedoch die Hintergründe nicht mehr bekannt, so dass in diesem Buch diese Grundlagen beschrieben werden. Der Autor ist seit 1972 in der Normung der Kurzschlussstromberechnung tätig und hat die in dieser Zeit gewonnen Erkenntnisse zusammengetragen.

This study guide is designed for students taking upper-level undergraduate courses in AC electrical machines. The textbook includes examples, questions, and exercises covering transformers, induction machines, and synchronous machines that will help students review and sharpen their knowledge of the subject and enhance their performance in the classroom. Offering detailed solutions, multiple methods for solving problems, and clear explanations of concepts, this hands-on guide will improve student problem-solving skills and understanding of the topics covered.

This study guide is designed for students taking courses in DC electric machines, principles of electromechanical energy conversion, and magnetic circuit analysis. The textbook includes examples, questions, and exercises that will help electrical engineering students to review and sharpen their knowledge of the subject and enhance their performance in the classroom. Offering detailed solutions, multiple methods for solving problems, and clear explanations of concepts, this hands-on guide will improve student's problem-solving skills and basic and advanced understanding of the topics covered.

This book attempts to eliminate the existing "e;imbalance"e; between the theory of electric machines and the theory of electromagnetic fields. In order to develop viable methods for engineering calculations, the author applies field equations. The resulting, new methods consist of traditional calculation elements represented in a refined form (circuit-loops, parameters, equivalent circuits and voltage equations). These calculation methods should be effective both for researchers and engineering practitioners, especially, in relation to the modern electric machines, such as powerful turbine generators, large high-speed synchronous motors, etc. 

Power Systems Operation with 100% Renewable Energy Sources combines concepts of renewable energy integration into power systems with real-world case studies to bridge the gap between theory and implementation. The book examines the challenges and solutions for renewable energy integration into the transmission and distribution grids, and also provides information on design, analysis, and operation. Starting with an introduction to renewable energy sources and bulk power systems, including policies and frameworks for grid upgradation, the book then provides forecasting, modeling and analysis techniques for renewable energy sources. Subsequent chapters discuss grid code requirements and compliance, before presenting a detailed breakdown of solar and wind integration into power systems. Other topics such as voltage control and optimization, power quality enhancement, and stability control are also considered. Filled with case studies, applications and techniques, this book is a valuable read to researchers, students and engineers working towards more sustainable power systems.

This book reports on a comprehensive study on a novel high-power converter, i.e. a Modular Multilevel Converter with Interleaved Half-bridge Submodules (ISM-MMC). It describes in depth its average model, the operating principles, as well as a new control method and a hybrid modulation strategy that help to exploit the benefits of the interleaving scheme. The new power converter is particularly advantageous for high-current applications that require superb quality of input/output waveforms. Moreover, this book reports on a systematic study of the current balancing problem between parallel-connected units that commutate in non-simultaneous fashion. This is a typical issue in interleaved converters, however here it is analyzed for the first time in relation to MMC-based structures. Two control strategies are proposed to cope with this matter. By using a sensorless regulation scheme, the number of required current transducers has been minimized, reducing complexity, cost, and footprintof the hardware, while providing converter with a fast and accurate current balancing. This book also offers a comprehensive comparison between several practical designs of ISM-MMC and classical MMC for an ultra-fast electrical vehicle charger. All in all, it provides graduate students and researchers, as well as field engineers and professionals with extensive information and essential practical details on the state-of-the-art MMC and ISM-MMC design.

This book presents advances in control technologies for efficient operation of the brushless doubly-fed induction generator (BDFIG). For robust and low-cost operation of BDFIGs, it is required to keep high-quality output voltage and eliminate the speed/position encoder under different loads and operation conditions. Some advanced control technologies, from the authors' latest work on these topics, are presented to achieve this goal with simple and accurate texts, illustrations, and tables. The qualified outcomes obtained from this book assure the high-performance operation of BDFIGs and also give the readers a straight insight toward challenges in this research area in the future.

Sustainable Energy Planning in Smart Grids curates a diverse selection of innovative technological applications for problem-solving towards a sustainable smart grid. Through these examples, the reader will discover the flexibility and analytical skills required for the race towards reliable, resilient, renewable energy. This book's combination of real-world case studies allows students and researchers to understand the complex, interdisciplinary systems that impact potential solutions. Detailed analysis highlights the positives and drawbacks of a variety of options, modeling considerations, and criteria for success. Trials and testing include electric vehicle charging, public lighting, energy mapping, heating solutions, and a proposal for 100% renewable cities. With contributions from a global range of experts, this book builds the complex picture of integrated, systemic modern energy planning.

Optimisation of electric drives for machines and EV requires considering the components as a whole. Integrated systems can be smaller, have greater flexibility, lower cost and higher power density. This book presents recent research and trends in integrated electrical motor drive technology.

Power Generation Technologies: Foundations, Design and Advances provides a comprehensive introduction to the latest developments in renewable and non-renewable generation technologies considered at micro and large-scale, and for traditional facility scale and modern distributed power generation systems. Each chapter provides a foundation in the topic enriched with practical solved examples, end chapter exercises and technical references. Provided computer codes can be instrumentalized to investigate practical examples at a granular level. In addition to the fundamental and theoretical discussions, operational and maintenance guidelines for power equipment are provided to prepare students for work in power plants. The work provides new international standards and regulation for power generation as well as content devoted to the thermo-economics of power generation and power plants. It is supported by a solution manual for end-chapter exercises and a slide show presentation of the book for instructors and students.

Blockchain-Based Systems for a Paradigm Shift in the Energy Grid explores the technologies and tools to utilize blockchain for energy grids and assists professionals and researchers to find alternative solutions for the future of the energy sector. The focus of this globally edited book is on the application of blockchain technology and the balance between supply and demand for energy and where it is achievable. Looking at the integration of blockchain and how it will make the network resistant to any failure in sub-components, this book has very clearly explores the areas of energy sector that need in-depth study of Blockchain for expanding energy markets. Meeting the demands of energy by local trading, verifying use of green energy certificates and providing a greater understanding of smart energy grids and Blockchain use cases. Exhaustively exploring the use of Blockchain for energy, this reference useful for all those in the energy industry looking to avoid disruption in the grid and sustain and control successful flow of electricity.

Applied Power Quality: Analysis, Modelling, Design and Implementation of Power Quality Monitoring Systems is a systematic account of the modern field of power quality as it transforms to reflect changes in generation, loads, management techniques and improvements in monitoring devices and systems. It examines the management of power quality (including those which are emerging) including system planning levels, the emission allocation process and equipment immunity. The work reviews power quality disturbances and their impacts on equipment. It comprehensively assesses current power quality emission and allocation standards, including their application and deficiencies for power quality disturbances across steady state voltage; voltage unbalance; harmonics; voltage fluctuations, flicker and rapid voltage change; and voltage sags. The work reviews how readers may design and implement power quality monitoring schemes including: monitoring instruments; monitoring methodologies; data storage; data analysis and indices; reporting methods including benchmarking; and monitoring standards. It concludes with surveys of the electrical performance of modern equipment including renewable energy devices as it pertains to power quality. In all cases, the book draws on reliable sources of power quality data, measurements and studies (both laboratory and field) that have been undertaken by the Australian Power Quality and Reliability Centre over the past 20 years.

Grid Connected Converters: Modeling, Stability and Control discusses the foundations and core applications of this diverse field, from structure, modeling and dynamic equivalencing through power and microgrids dynamics and stability, before moving on to controller synthesis methodologies for a powerful range of applications. The work opens with physical constraints and engineering aspects of advanced control schemes. Robust and adaptive control strategies are evaluated using real-time simulation and experimental studies. Once foundations have been established, the work goes on to address new technical challenges such as virtual synchronous generators and synergic inertia emulation in response to low inertia challenges in modern power grids. The book also addresses advanced systematic control synthesis methodologies to enhance system stability and dynamic performance in the presence of uncertainties, practical constraints and cyberattacks.

Monitoring and Control of Electrical Power Systems using Machine Learning Techniques bridges the gap between advanced machine learning techniques and their application in the control and monitoring of electrical power systems, particularly relevant for heavily distributed energy systems and real-time application. The book reviews key applications of deep learning, spatio-temporal, and advanced signal processing methods for monitoring power quality. This reference introduces guiding principles for the monitoring and control of power quality disturbances arising from integration of power electronic devices and discusses monitoring and control of electrical power systems using benchmark test systems for the creation of bespoke advanced data analytic algorithms.

Fundamentals of Smart Grid Systems offers an expansive introduction to the operationalization, integration, and management of smart grids--the distributed, renewable, responsive, and highly efficient power grid on the verge of radically transforming our energy system. The book reviews the design of smart grid systems, their associated technologies, and operations, helping users develop a modern foundational understanding of smart grid systems and many of their advanced implementations, where sophisticated technologies are employed. The work serves as a guidebook and primer for early career researchers, with a rich integration of current science, modern applications, and future implementations.

Overcurrent Relay Advances for Modern Electricity Networks explores how to optimize protection and improve system stability and resilience by implementing advanced overcurrent relays in highly dynamic renewable heavy power systems. This guide provides a foundation in relay functions and behaviors in current modern networks, particularly regarding renewable power sources and new electrical network structures such as microgrids. The work discusses the design and creation of protection schemes in smart grids and analyzes their impact on performance and security in protection systems. This practical book also presents a critical new coordination method for online applications.

Power System Protection in Future Smart Grids: Achieving Reliable Operation with Renewable Energy, Electric Vehicles and Distributed Generation demonstrates how to protect smart, highly renewable, and highly distributed power systems with state-of-the-art methods rooted in adaptive protection and dynamic response, and based on continuous communication. Focusing on the implementation of novel protection schemes, each chapter presents solutions accompanied by figurative elements and demonstrator codes in MATLAB, C, Python and Java. Chapters address active distribution networks, hybrid microgrids, EVs and inverters on fault levels, adaptive protection systems, dynamic protection strategies, and Hardware in the Loop (HiL) approaches.

Genetic Optimization Techniques for Sizing and Management of Modern Power Systems explores the design and management of energy systems using a genetic algorithm as the primary optimization technique. Coverage ranges across topics related to resource estimation and energy systems simulation. Chapters address the integration of distributed generation, the management of electric vehicle charging, and microgrid dimensioning for resilience enhancement with detailed discussion and solutions using parallel genetic algorithms. The work is suitable for researchers and practitioners working in power systems optimization requiring information for systems planning purposes, seeking knowledge on mathematical models available for simulation and assessment, and relevant applications in energy policy.

Power Quality in Power Systems, Electrical Machines, and Power-Electronic Drives uses current research and engineering practices, guidelines, standards, and regulations for engineering professionals and students interested in solving power quality problems in a cost effective, reliable, and safe manner within the context of renewable energy systems. The book contains chapters that address power quality across diverse facets of electric energy engineering, including AC and DC transmission and distribution lines; end-user applications such as electric machines, transformers, inductors, capacitors, wind power, and photovoltaic power plants; and variable-speed, variable-torque power-electronic drives. The book covers nonsinusoidal waveshapes, voltage disturbances, harmonic losses, aging and lifetime reductions, single-time events such as voltage dips, and the effects of variable-speed drives controlled by PWM converters. The book also reviews a corpus of techniques to mitigate power-quality problems, such as the optimal design of renewable energy storage devices (including lithium-ion batteries and fuel cells for automobiles serving as energy storage), and the optimal design of nonlinear loads for simultaneous efficiency and power quality.

This stimulating and inspiring book explores the present and anticipates the future of Automotive Microsystems. The past decade has seen enormous progress in the use of automotive microsysems; their effect has been dramatic in reducing casualties, controlling emissions and increasing passenger comfort and vehicle performance. The book is a snapshot of new technological priorities in microsystems-based smart devices that offers a mid-term perspective on coming smart systems applications in automobiles.