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Contributions in Mathematics and Engineering: In Honor of Constantin Carathéodory
by Panos M. Pardalos Themistocles M. RassiasThe contributions in this volume aim to deepenunderstanding of some of the current research problems and theories inmodern topics such as calculus of variations, optimization theory, complexanalysis, real analysis, differential equations, andgeometry. Applications to these areas of mathematics are presented withinthe broad spectrum of research in Engineering Science withparticular emphasis on equilibrium problems, complexity in numericaloptimization, dynamical systems, non-smooth optimization, complex networkanalysis, statistical models and data mining, and energy systems. Additionalemphasis is given to interdisciplinary research, although subjects are treatedin a unified and self-contained manner. The presentation of methods, theory andapplications makes this tribute an invaluable reference for teachers,researchers, and other professionals interested in pure and appliedresearch, philosophy of mathematics, and mathematics education. Somereview papers published in this volume will be particularly useful for abroader audience of readers as well as for graduate students who search for thelatest information. ConstantinCarath#65533;odory's wide-ranging influence in the international mathematicalcommunity was seen during the first Fields Medals awards at the InternationalCongress of Mathematicians, Oslo, 1936. Two medals were awarded, one to Lars V. Ahlfors and one to Jesse Douglass. It was Carath#65533;odory who presented both theirworks during the opening of the International Congress. This volume containssignificant papers in Science and Engineering dedicated to the memory ofConstantin Carath#65533;odory and the spirit of his mathematical influence.
Contributions of Chemical Engineering to Sustainability
by Juan Gabriel Segovia-Hernández Nelly Ramírez-Corona Valentina Aristizábal-MarulandaThis book discusses the recent advancements in chemical engineering and their role in achieving the United Nations' 2030 Agenda and Sustainable Development Goals (SDGs). Addressing these goals involves tackling intricate and interdisciplinary challenges.Chemical engineers have been diligently addressing a diverse array of issues across academia, society, and industry, with the aim of positively impacting these goals.The book offers essential insights and detailed analyses for each SDG. It explores the challenges encountered within various applications and proposes solutions based on foundational engineering principles. The book's content is tailored to professionals, students, and researchers across diverse fields, including engineering, environmental science, and biotechnology.
Contributions to International Conferences on Engineering Surveying: 8th INGEO International Conference on Engineering Surveying and 4th SIG Symposium on Engineering Geodesy (Springer Proceedings in Earth and Environmental Sciences)
by Alojz Kopáčik Peter Kyrinovič Ján Erdélyi Rinaldo Paar Ante MarendićThis book presents contributions from the joint event 8th INGEO International Conference on Engineering Surveying and 4th SIG Symposium on Engineering Geodesy, which was planned to be held in Dubrovnik, Croatia, on April 1–4, 2020 and was canceled due to COVID-19 pandemic situation. Editors, in cooperation with the Local Organisers, are decided to organize the Conference on-line at October 22-23, 2020. We would like to invite you to participation through http://ingeo-sig2020.hgd1952.hr/index.php/2020/08/31/ingeosig2020-virtual-conference-october-22-23-2020/. The event brought together professionals in the fields of civil engineering and engineering surveying to discuss new technologies, their applicability, and operability.
Contributions to Networked and Event-Triggered Control of Linear Systems (Springer Theses)
by María Guinaldo LosadaThis book reports on a set of new techniques for resolving current issues in networked control systems. The main focus is on strategies for event-based control, for both centralized and decentralized architectures. The first part of the book addresses the problem of single-loop networked control systems and proposes an anticipative remote controller for dealing with delays and packet losses. The second part of the book proposes a distributed event-based control strategy for networked dynamical systems, which has been implemented in a test-bed of mobile robots, and provides readers with a thorough description of an interactive simulator used to validate the results. This thesis, examined at the Universidad Nacional de Educación a Distancia in 2013, received the award for best thesis in control engineering from the Control Engineering group of the Spanish Committee of Automatic Control in 2015.
Contributions to Partial Differential Equations and Applications (Computational Methods in Applied Sciences #47)
by O. Pironneau J. Periaux P. Neittaanmäki Y. A. Kuznetsov W. Fitzgibbon B. N. ChetverushkinThis book treats Modelling of CFD problems, Numerical tools for PDE, and Scientific Computing and Systems of ODE for Epidemiology, topics that are closely related to the scientific activities and interests of Prof. William Fitzgibbon, Prof. Yuri Kuznetsov, and Prof. O. Pironneau, whose outstanding achievements are recognised in this volume. It contains 20 contributions from leading scientists in applied mathematics dealing with partial differential equations and their applications to engineering, ab-initio chemistry and life sciences. It includes the mathematical and numerical contributions to PDE for applications presented at the ECCOMAS thematic conference "Contributions to PDE for Applications" held at Laboratoire Jacques Louis Lions in Paris, France, August 31- September 1, 2015, and at the Department of Mathematics, University of Houston, Texas, USA, February 26-27, 2016. This event brought together specialists from universities and research institutions who are developing or applying numerical PDE or ODE methods with an emphasis on industrial and societal applications. This volume is of interest to researchers and practitioners as well as advanced students or engineers in applied and computational mathematics. All contributions are written at an advanced scientific level with no effort made by the editors to make this volume self-contained. It is assumed that the reader is a specialist already who knows the basis of this field of research and has the capability of understanding and appreciating the latest developments in this field.
Control: Digitality as Cultural Logic (Leonardo)
by Seb FranklinAn examination of digitality not simply as a technical substrate but also as the logical basis for reshaped concepts of labor, subjectivity, and collectivity.Is there a cultural logic of what we have come to call the information age? Have the technologies and techniques centered on the computer provided not only tools but also the metaphors through which we now understand the social and economic formation of our world? In Control, Seb Franklin addresses the conditions of knowledge that make the concept of the “information economy” possible while at the same time obscuring its deleterious effects on material social spaces. In so doing, Franklin traces three intertwined threads: the relationships among information, labor, and social management that emerged in the nineteenth century; the mid-twentieth-century diffusion of computational metaphors; and the appearance of informatic principles in certain contemporary socioeconomic and cultural practices.Drawing on critical theory, media theory, and the history of science, Franklin names control as the episteme grounding late capitalism. Beyond any specific device or set of technically mediated practices, digitality functions within this episteme as the logical basis for reshaped concepts of labor, subjectivity, and collectivity, as well as for the intensification of older modes of exclusion and dispossession. In tracking the pervasiveness of this logical mode into the present, Franklin locates the cultural traces of control across a diverse body of objects and practices, from cybernetics to economic theory and management styles, and from concepts of language and subjectivity to literary texts, films, and video games.
control
by Lydia KangFor fans of Uglies comes a spiraling, intense sci fi thriller."Control blew me away. The twists and turns and suspense made for a thrilling ride. Zel is as authentic a character as I've read in a very long time. Highly recommended" - James Dashner, New York Times bestselling author of The Maze RunnerSet in 2150 -- in a world of automatic cars, nightclubs with auditory ecstasy drugs, and guys with four arms -- this is about the human genetic "mistakes" that society wants to forget, and the way that outcasts can turn out to be heroes.When their overprotective father is killed in a terrible accident, Zel and her younger sister, Dylia, are lost in grief. But it's not until strangers appear, using bizarre sensory weapons, that the life they had is truly eviscerated. Zel ends up in a safe house for teens that aren't like any she's ever seen -- teens who, by law, shouldn't even exist. One of them -- an angry tattooed boy haunted by tragedy -- can help Zel reunite with her sister.But only if she is willing to lose him.
control
by Lydia KangFor fans of Uglies comes a spiraling, intense sci fi thriller. "Control blew me away. The twists and turns and suspense made for a thrilling ride. Zel is as authentic a character as I've read in a very long time. Highly recommended" - James Dashner, New York Times bestselling author of The Maze Runner Set in 2150 -- in a world of automatic cars, nightclubs with auditory ecstasy drugs, and guys with four arms -- this is about the human genetic "mistakes" that society wants to forget, and the way that outcasts can turn out to be heroes. When their overprotective father is killed in a terrible accident, Zel and her younger sister, Dylia, are lost in grief. But it's not until strangers appear, using bizarre sensory weapons, that the life they had is truly eviscerated. Zel ends up in a safe house for teens that aren't like any she's ever seen -- teens who, by law, shouldn't even exist. One of them -- an angry tattooed boy haunted by tragedy -- can help Zel reunite with her sister. But only if she is willing to lose him.
Control Allocation for Spacecraft Under Actuator Faults
by Qinglei Hu Bo Li Bing Xiao Youmin ZhangThis book provides a systematical and comprehensive description of some facets of modeling, designing, analyzing and exploring the control allocation and fault-tolerant control problems for over-actuated spacecraft attitude control system under actuator failures, system uncertainties and disturbances. The book intends to provide a unified platform for understanding and applicability of the fault-tolerant attitude control and control allocation for different purposes in aerospace engineering and some related fields. And it is particularly suited for readers who are interested to learn solutions in spacecraft attitude control system design and related engineering applications.
Control and Automation of Electrical Power Distribution Systems
by James Northcote-Green Robert G. WilsonImplementing the automation of electric distribution networks, from simple remote control to the application of software-based decision tools, requires many considerations, such as assessing costs, selecting the control infrastructure type and automation level, deciding on the ambition level, and justifying the solution through a business case. Control and Automation of Electric Power Distribution Systems addresses all of these issues to aid you in resolving automation problems and improving the management of your distribution network.Bringing together automation concepts as they apply to utility distribution systems, this volume presents the theoretical and practical details of a control and automation solution for the entire distribution system of substations and feeders. The fundamentals of this solution include depth of control, boundaries of control responsibility, stages of automation, automation intensity levels, and automated device preparedness. To meet specific performance goals, the authors discuss distribution planning, performance calculations, and protection to facilitate the selection of the primary device, associated secondary control, and fault indicators. The book also provides two case studies that illustrate the business case for distribution automation (DA) and methods for calculating benefits, including the assessment of crew time savings.As utilities strive for better economies, DA, along with other tools described in this volume, help to achieve improved management of the distribution network. Using Control and Automation of Electric Power Distribution Systems, you can embark on the automation solution best suited for your needs.
Control and Communication for Demand Response with Thermostatically Controlled Loads
by Kai Ma Pei Liu Jie Yang Xinping GuanThe book focuses on control and communication for demand response with thermostatically controlled loads. This is achieved by providing in-depth study on a number of major topics such as load control, optimization strategies, communication network model, resource allocation methods, system design, implementation, and performance evaluation. Two major cost modeling methods are established in detail, which are cost modeling based on Taguchi Loss Function and cost modeling based on regulation errors. The comprehensive and systematic treatment of issues in optimization strategies and resource allocation for demand response are one of the major features of the book, which is particularly suited for readers who are interested to learn solutions in control and communication. The book can benefit researchers, engineers, and graduate students in fields of control theory, automation, communication engineering and economics, etc.
Control and Decision Strategies in Wastewater Treatment Plants for Operation Improvement (Intelligent Systems, Control and Automation: Science and Engineering #86)
by Ignacio Santín Carles Pedret Ramón VilanovaThis book examines the operation of biological wastewater treatment plants (WWTPs), with a focus on maintaining effluent water quality while keeping operational costs within constrained limits. It includes control operation and decision schemes and is based on the use of benchmarking scenarios that yield easily reproducible results that readers can implement for their own solutions. The final criterion is the effect of the applied control strategy on plant performance - specifically, improving effluent quality, reducing costs and avoiding violations of established effluent limits. The evaluation of the different control strategies is achieved with the help of two Benchmark Simulation Models (BSM1, BSM2). Given the complexity of the biological and biochemical processes involved and the major fluctuations in the influent flow rate, controlling WWTPs poses a serious challenge. Further, the importance of control goal formulation and control structure design in relation to WWTP process control is widely recognized. Of particular interest are the regulations governing the compliance with effluent criteria. Authorities measure compliance with these criteria on the basis of long or short timeframes, and the legal constraints imposed on effluent pollutant concentrations are among the most essential aspects of control structures for WWTPs. This book explores all these facets in detail.
Control and Dynamics in Power Systems and Microgrids
by Lingling FanIn traditional power system dynamics and control books, the focus is on synchronous generators. Within current industry, where renewable energy, power electronics converters, and microgrids arise, the related system-level dynamics and control need coverage. Wind energy system dynamics and microgrid system control are covered. The text also offers insight to using programming examples, state-of-the-art control design tools, and advanced control concepts to explain traditional power system dynamics and control. The reader will gain knowledge of dynamics and control in both synchronous generator-based power system and power electronic converter enabled renewable energy systems, as well as microgrids.
Control and Estimation Methods over Communication Networks
by Magdi S. MahmoudThis book provides a rigorous framework in which to study problems in the analysis, stability and design of networked control systems. Four dominant sources of difficulty are considered: packet dropouts, communication bandwidth constraints, parametric uncertainty, and time delays. Past methods and results are reviewed from a contemporary perspective, present trends are examined, and future possibilities proposed. Emphasis is placed on robust and reliable design methods. New control strategies for improving the efficiency of sensor data processing and reducing associated time delay are presented. The coverage provided features: · an overall assessment of recent and current fault-tolerant control algorithms; · treatment of several issues arising at the junction of control and communications; · key concepts followed by their proofs and efficient computational methods for their implementation; and · simulation examples (including TrueTime simulations) to provide hands-on experience. In addition to the theoretical coverage, the author describes a number of applications that demonstrate the real-world relevance of this material, and these include: · a servo system; · a triple inverted pendulum; · power system control; · wireless control of a cart with inverted pendulum and wireless servo application with emphasis on controller area networks; and · switched ethernet and wireless area networks. Researchers and graduate students working in networked and distributed control will find this text a useful guide in avoiding and ameliorating common and serious problems with these systems. The increasing prevalence of networks in many fields of engineering will make Control and Estimation Methods over Communication Networks of interest to practitioners with backgrounds in communications, process engineering, robotics, power, automotive and other areas.
Control and Filter Design of Single-Phase Grid-Connected Converters
by Henry S. Chung Yuanbin He Min Huang Weimin Wu Frede BlaabjergControl and Filter Design of Single-Phase Grid-Connected Converters A state-of-the-art discussion of modern grid inverters In Control and Filter Design of Single-Phase Grid-Connected Converters, a team of distinguished researchers deliver a robust and authoritative treatment of critical distributed power generation technologies, grid-connected inverter designs, and renewable energy utilization. The book includes detailed explanations of the system structure of distributed generation (DG)-grid interface converters and the methods of controlling DG-grid interface voltage source converters (VSCs) with high-order filters. The authors also explore the challenges and obstacles associated with modern power electronic grid-connected inverter control technology and introduce some designed systems that meet these challenges, such as the grid impedance canceller. Readers will discover demonstrations of basic principles, guidelines, examples, and design and simulation programs for grid-connected inverters based on LCL/LLCL technology. They will also find: A thorough introduction to the architectures of DG-grid interfacing converters, including the challenges of controlling DG-grid interfacing VSCs with high-order filters Comprehensive explorations of the control structure and modulation techniques of single-phase grid-tied inverters Practical discussions of an LLCL power filter for single-phase grid-tied inverters Fulsome treatments of design methods of passive damping for LCL/LLCL-filtered grid-tied inverters Perfect for researchers, postgraduate students, and senior level undergraduate students of electrical engineering, Control and Filter Design of Single-Phase Grid-Connected Converters will also benefit research & development engineers involved with the design and manufacture of power electronic inverters.
Control and Filtering of Fuzzy Systems Under Communication Channels
by Xiao-Heng Chang Jun Xiong Zhi-Min Li Bo WuThis book systematically studies the feedback control and filtering problems for nonlinear plants with limited communication channels based on T-S fuzzy models. By fully considering different network-induced phenomena, such as signal quantizations, time-delays, data packet dropouts, communication protocols, cyber attacks, and so on, some significant strategies are provided for various performance analysis and different controller/filter synthesis of fuzzy systems. The event-triggered mechanism is also mentioned to save the communication resource. Moreover, some results are extended to the fault detection and fault-tolerant control. The book provides some new methodologies in analysis and synthesis of fuzzy systems under communication channels, and can serve as a valuable reference material for researchers wishing to explore the area of control and filtering of fuzzy systems and networked systems.
Control and Filtering of Fuzzy Systems with Switched Parameters (Studies in Systems, Decision and Control #268)
by Shanling Dong Zheng-Guang Wu Peng ShiThis book presents recent advances in control and filter design for Takagi-Sugeno (T-S) fuzzy systems with switched parameters. Thanks to its powerful ability in transforming complicated nonlinear systems into a set of linear subsystems, the T-S fuzzy model has received considerable attention from those the field of control science and engineering. Typical applications of T-S fuzzy systems include communication networks, and mechanical and power electronics systems. Practical systems often experience abrupt variations in their parameters or structures due to outside disturbances or component failures, and random switching mechanisms have been used to model these stochastic changes, such as the Markov jump principle. There are three general types of controller/filter for fuzzy Markov jump systems: mode-independent, mode-dependent and asynchronous. Mode-independence does not focus on whether modes are accessible and ignores partially useful mode information, which results in some conservatism. The mode-dependent design approach relies on timely, complete and correct information regarding the mode of the studied plant. Factors like component failures and data dropouts often make it difficult to obtain exact mode messages, which further make the mode-dependent controllers/filters less useful. Recently, to overcome these issues, researchers have focused on asynchronous techniques. Asynchronous modes are accessed by observing the original systems based on certain probabilities. The book investigates the problems associated with controller/filter design for all three types. It also considers various networked constraints, such as data dropouts and time delays, and analyzes the performances of the systems based on Lyapunov function and matrix inequality techniques, including the stochastic stability, dissipativity, and $H_\infty$. The book not only shows how these approaches solve the control and filtering problems effectively, but also offers potential meaningful research directions and ideas. Covering a variety of fields, including continuous-time and discrete-time Markov processes, fuzzy systems, robust control, and filter design problems, the book is primarily intended for researchers in system and control theory, and is also a valuable reference resource for graduate and undergraduate students. Further, it provides cases of fuzzy control problems that are of interest to scientists, engineers and researchers in the field of intelligent control. Lastly it is useful for advanced courses focusing on fuzzy modeling, analysis, and control.
Control and Information Sciences: Select Proceedings of CISCON 2022 (Lecture Notes in Electrical Engineering #1140)
by V. I. George K. V. Santhosh Samavedham LakshminarayananThis book presents the select peer-reviewed proceedings of the Control Instrumentation and System Conference (CISCON 2022) held at Manipal Institute of Technology, MAHE, Manipal. It examines a wide spectrum covering the latest trends in the fields of instrumentation, sensors and systems, and industrial automation and control. The topics covered include image and signal processing, robotics, renewable energy, power systems, and power drives, performance attributes of MEMS, multi-sensor data fusion, machine learning, optimization techniques, process control, safety monitoring, safety-critical control, supervisory control, system modeling and virtual instrumentation. The book is a valuable reference for researchers and professionals interested in sensors, adaptive control, automation and control, and allied fields.
Control and Information Sciences: Select Proceedings of CISCON 2023 (Lecture Notes in Electrical Engineering #1236)
by I. Thirunavukkarasu Roshan KumarThis book presents the select proceedings of the Control Instrumentation and System Conference (CISCON 2023) held at Manipal Institute of Technology, MAHE, Manipal. It examines a broad spectrum covering the latest trends in instrumentation, sensors and systems, and industrial automation and control. The topics covered include image and signal processing, robotics, renewable energy, power systems, and power drives, performance attributes of MEMS, multi-sensor data fusion, machine learning, optimization techniques, process control, safety monitoring, safety-critical control, supervisory control, system modeling, and virtual instrumentation. The book is a valuable reference for researchers and professionals interested in sensors, adaptive management, automation and control, and allied fields.
Control and Management of Pests in Stored Products
by Digvir S. JayasStored commodities are man-made ecosystems and interactions of biological agents with its surrounding physical environment could result in significant economic losses if physical environment is not manipulated to make it lethal or at least difficult for survival of biological agents. Control and Management of Pests in Stored Products is based on 18 invited presentations by world-renowned experts on topics of relevance to control and manage pests in stored products. Each chapter synthesizes the state-of-art knowledge on the selected topics dealing with fumigation, fumigants, and other methods of controlling insects such as low temperature, diatomaceous earth, integrated pest management and provides recommendations for future research. It also includes two chapters on practical aspects of fumigation dealing with engineering considerations and safety. The contents of the chapters were presented as the keynote addresses at the International Conference on Controlled Atmosphere and Fumigation in Stored Products.This book serves as a reference book for graduate students, researchers, and facility managers, and can also be useful as a textbook for courses dealing with aspects of grain storage for students in agricultural engineering, agricultural entomology and food science.
Control and Measurement Applications for Smart Grid: Select Proceedings of SGESC 2021 (Lecture Notes in Electrical Engineering #822)
by Sukumar Mishra Sathans Suhag Chitralekha MahantaThe book contains select proceedings of the International Conference on Smart Grid Energy Systems and Control (SGESC 2021). The proceedings is divided into 03 volumes, and this volume focuses on adaptive control and intelligent sensors, wide-area measurements, and applications in the smart grid. This book includes papers on topics such as SMART sensors, vision sensors, sensor fusion, wireless sensors, and the internet of things, MEMS, Mechatronics, Remote sensing, telemetry, and its applications in automated vehicle control. This book is a unique collection of chapters from different areas with a common theme and will be immensely useful to academic researchers and practitioners in the industry.
Control and Mechatronics: The Industrial Electronics Handbook (Industrial Electronics Ser.)
by J. David Irwin Bogdan M. WilamowskiThe Industrial Electronics Handbook, Second Edition combines traditional and newer, more specialized knowledge that will help industrial electronics engineers develop practical solutions for the design and implementation of high-power applications. Embracing the broad technological scope of the field, this collection explores fundamental areas, including analog and digital circuits, electronics, electromagnetic machines, signal processing, and industrial control and communications systems. It also facilitates the use of intelligent systems—such as neural networks, fuzzy systems, and evolutionary methods—in terms of a hierarchical structure that makes factory control and supervision more efficient by addressing the needs of all production components. Enhancing its value, this fully updated collection presents research and global trends as published in the IEEE Transactions on Industrial Electronics Journal, one of the largest and most respected publications in the field. Control and Mechatronics presents concepts of control theory in a way that makes them easily understandable and practically useful for engineers or students working with control system applications. Focusing more on practical applications than on mathematics, this book avoids typical theorems and proofs and instead uses plain language and useful examples to: Concentrate on control system analysis and design, comparing various techniques Cover estimation, observation, and identification of the objects to be controlled—to ensure accurate system models before production Explore the various aspects of robotics and mechatronics Other volumes in the set: Fundamentals of Industrial Electronics Power Electronics and Motor Drives Industrial Communication Systems Intelligent Systems
Control and Monitoring of Chemical Batch Reactors (Advances in Industrial Control)
by Vincenzo Tufano Francesco Pierri Fabrizio Caccavale Mario IamarinoThe Chemical Batch Reactor is aimed at tackling the above problems from a blending of academic and industrial perspectives. Advanced solutions (i.e., those based on recent research results) to the four fundamental problems of modeling, identification, control and fault diagnosis for batch processes are developed in detail in four distinct chapters. In each chapter, a general overview of foundational concepts is also given, together with a review of recent and classical literature on the various subjects. To provide a unitary treatment of the different topics and give a firm link to the underlying practical applications, a single case study is developed as the book progresses; a batch process of industrial interest, i.e., the phenol-formaldehyde reaction for the production of phenolic resins, is adopted to test the various techniques developed. In this way, a roadmap of the solutions to fundamental problems, ranging from the early stages of the production process to the complete design of control and diagnosis systems, is provided for both industrial practitioners and academic researchers.
Control and Operation of Grid-Connected Wind Energy Systems (Green Energy and Technology)
by Ali M. Eltamaly Almoataz Y. Abdelaziz Ahmed G. Abo-KhalilThis edited book analyses and discusses the current issues of integration of wind energy systems in the power systems. It collects recent studies in the area, focusing on numerous issues including unbalanced grid voltages, low-voltage ride-through and voltage stability of the grid. It also explores the impact of the emerging technologies of wind turbines and power converters in the integration of wind power systems in power systems. This book utilizes the editors’ expertise in the energy sector to provide a comprehensive text that will be of interest to researchers, graduate students and industry professionals.
Control and Operation of Grid-Connected Wind Farms: Major Issues, Contemporary Solutions, and Open Challenges (Advances in Industrial Control)
by John N. Jiang Choon Yik Tang Rama G. RamakumarFrom the point of view of grid integration and operation, this monograph advances the subject of wind energy control from the individual-unit to the wind-farm level. The basic objectives and requirements for successful integration of wind energy with existing power grids are discussed, followed by an overview of the state of the art, proposed solutions and challenges yet to be resolved. At the individual-turbine level, a nonlinear controller based on feedback linearization, uncertainty estimation and gradient-based optimization is shown robustly to control both active and reactive power outputs of variable-speed turbines with doubly-fed induction generators. Heuristic coordination of the output of a wind farm, represented by a single equivalent turbine with energy storage to optimize and smooth the active power output is presented. A generic approximate model of wind turbine control developed using system identification techniques is proposed to advance research and facilitate the treatment of control issues at the wind-farm level. A supervisory wind-farm controller is then introduced with a view to maximizing and regulating active power output under normal operating conditions and unusual contingencies. This helps to make the individual turbines cooperate in such as way that the overall output of the farm accurately tracks a reference and/or is statistically as smooth as possible to improve grid reliability. The text concludes with an overall discussion of the promise of advanced wind-farm control techniques in making wind an economic energy source and beneficial influence on grid performance. The challenges that warrant further research are succinctly enumerated. Control and Operation of Grid-Connected Wind Farms is primarily intended for researchers from a systems and control background wishing to apply their expertise to the area of wind-energy generation. At the same time, coverage of contemporary solutions to fundamental operational problems will benefit power/energy engineers endeavoring to promote wind as a reliable and clean source of electrical power.