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Voltage-Sourced Converters in Power System: Modeling, control, and Applications
The concept of electronic (static) power conversion has gained widespread acceptance in power system applications. As such, electronic power converters are increasingly employed for power conversion and conditioning, compensation, and active filtering. The gradual increase in the depth of penetration of distributed energy resource (DER) units in power systems and further acceptance of new trends and concepts, for example, microgirds, active distribution systems, and smart grids, also indicate a wider role for power-electronic converters in the electric power system.rnWhile a fairly large number of books on various power-electronic converter configurations and their principles of operation do exist, there is a gap in terms of modelling, analysis, and control of power-electronic converters in the context of power systems. This book addresses this gap and concentrates on power conversion and conditioning applications and presents the analysis and control design methodologies for a specific class of high-power electronic converters, namely, the three-phase voltage-sourced converter (VSC). It provides systematic, comprehensive, unified, and detailed coverage of the relevant materials.rnThis book serves as a reference book for senior undergraduate and graduate students in power engineering programs, practicing engineers who deal with grid integration and operation of DER systems, design engineers, and researchers in the areas of electric power generation, transmission, distribution, and utilization. The book does not cover implementation details of controllers; however, it contains adequate details for system analysts and control designers andrn• describes various functions that the VSC can perform in an electric power system,rn• introduces different classes of applications of the VSC in electric power systems,rn• provides a systemic approach to modeling a VSC-based system with respect to its class of application,rn• present a comprehensive and detailed control design approach for each class of applications, andrn• illustrates the control design procedures and evaluates the performance, based on digital computer time-domain simulation studies.rnThe text is organized in 13 chapters. Chapter 1 provides a brief introduction to the most commonly used electronic switches and converter configurations in the power system. The rest of the book is divided into two parts. The first part, Chapter 2-10, provides theory and presents fundamental modeling and design methodologies. The second part, Chapter 11-13, covers applications of theory and design methodologies, through three selected application case; the static compensator (STATCOM), the forced-commutated back-to-back HVDC converter system, and the variable-speed wind-power systems based on the doubly fed asynchronous generator. The second part could have included more application varieties. However, only three application cases have been presented to highight the main concepts, within a limited number of pages. The PSCAD/EMTDC software package has been used to generate most of the time-domain simulation results in the text.rnThe reader is expected to have, at least, an undergraduate-level background in electric circuits, electric machinery, electric power system fundamentals, and classical (linear) control. Familiarity with power electronic and the state-space representation of systems is a bonus but not a necessity. Relevant references are also cited throughout the book to help the reader trace back the developments to their original sources.
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