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T Connected Multi Pulse Ac Dc Converters For Power Quality Improvement
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Book Synopsis T-Connected Multi-Pulse Ac-Dc Converters for Power Quality Improvement by : Rohollah Abdollahi
Download or read book T-Connected Multi-Pulse Ac-Dc Converters for Power Quality Improvement written by Rohollah Abdollahi and published by LAP Lambert Academic Publishing. This book was released on 2012-04 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the design and analysis of T-Connected autotransformer based multipulse ac-dc converters which supplies a direct torque controlled motor drive in order to improve power quality conditions at the point of common coupling. A T-connected autotransformer is designed to supply the rectifiers. This autotransformer makes use of only two single-phase transformers, resulting in reduced volume, weight, and the cost of the drive as compared with polygon structure. The design procedure of magnetics is in a way such that makes it suitable for retrofit applications where a six-pulse diode bridge rectifier is being utilized.The aforementioned structure improves power quality criteria at ac mains and makes them consistent with the IEEE-519 standard requirements for varying loads. Furthermore, near unity power factor is obtained for a wide range of DTCIMD load operation. A comparison is made between 6-pulse, 28-pulse, 30-pulse, and 36-pulse converters from view point of power quality indices. Results show that the THD of input current is less than 5% for the 28-pulse topology and less than 3% for the 30-pulse topology and less than 4% for the 36-pulse topology at variable loads.
Book Synopsis Power Quality Improvement By Multi Pulse AC to DC Converters by : Punya Sekhar Chavali
Download or read book Power Quality Improvement By Multi Pulse AC to DC Converters written by Punya Sekhar Chavali and published by LAP Lambert Academic Publishing. This book was released on 2012-05 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt: Power electronic devices are non-linear loads that create harmonic distortion and can be susceptible to voltage dips if not adequately protected. The most common economically damaging power quality problem encountered involves the use of variable-speed drives. THREE-PHASE ac-dc conversion of electric power is widely employed in adjustable-speeds drive (ASDs)), uninterruptible power supplies (UPSs), HVDC systems, and utility interfaces with non conventional energy sources such as solar photovoltaic systems (PVs), etc.Traditionally, ac-dc converters, which are also known as rectifiers, are developed using diodes and thyristors to provide uncontrolled and controlled unidirectional and bidirectional dc power. They have the problems of poor power quality. This book is an endeavour towards analyzing the different multi-pulse converters in solving the power quality problem in a three-phase converter system.
Book Synopsis High-Power Converters and AC Drives by : Bin Wu
Download or read book High-Power Converters and AC Drives written by Bin Wu and published by John Wiley & Sons. This book was released on 2007-01-29 with total page 350 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the latest cutting-edge technology in high-power converters and medium voltage drives, and provides a complete analysis of various converter topologies, modulation techniques, practical drive configurations, and advanced control schemes. Supplemented with more than 250 illustrations, the author illustrates key concepts with simulations and experiments. Practical problems, along with accompanying solutions, are presented to help you tackle real-world issues.
Book Synopsis Fundamentals of Electrical Drives by : DUBEY GOPAL K
Download or read book Fundamentals of Electrical Drives written by DUBEY GOPAL K and published by CRC Press. This book was released on 2002-06-13 with total page 416 pages. Available in PDF, EPUB and Kindle. Book excerpt: Encouraged by the response to the first edition and to keep pace with recent developments, Fundamentals of Electrical Drives, Second Edition incorporates greater details on semi-conductor controlled drives, includes coverage of permanent magnet AC motor drives and switched reluctance motor drives, and highlights new trends in drive technology. Contents were chosen to satisfy the changing needs of the industry and provide the appropriate coverage of modern and conventional drives. With the large number of examples, problems, and solutions provided, Fundamentals of Electrical Drives, Second Edition will continue to be a useful reference for practicing engineers and for those preparing for Engineering Service Examinations.
Book Synopsis Power Electronic Converter Harmonics by : D. A. Paice
Download or read book Power Electronic Converter Harmonics written by D. A. Paice and published by Institute of Electrical & Electronics Engineers(IEEE). This book was released on 1996 with total page 234 pages. Available in PDF, EPUB and Kindle. Book excerpt: Electrical Engineering/Power and Energy Engineering Power Electronic Converter Harmonics Multipulse Methods for Clean Power "An excellent treatment of the subject." --Allan Ludbrook, Ludbrook & Associates "Pulls all the material together and presents it from the viewpoint of a long-time practitioner in the field . will be much appreciated by designers, the utilities, and users." --Thomas Barton, University of Calgary Stay on the cutting edge of applied power electronics for energy-saving systems with this invaluable guide to multipulse converters, power sources, and the IEEE Industry Standard 519. One of the foremost experts in the field and holder of 28 patents, Derek A. Paice brings you new circuit schematics and easy-to-follow methods for practical system analysis, using actual field test results. This book offers thorough coverage of: * Requirements, calculations, and standards for harmonics * Power source representation * Multipulse methods and transformers * Double-wound, auto-wound, interphase, and current-control transformers * Multiphase circuit performance * Practical applications * Useful formulas for analysis Power Electronic Converter Harmonics will be indispensable to anyone looking for optimum concepts for power electronics design, including applications engineers, consultants, and manufacturers. Also of Interest from IEEE Press. Printed Circuit Board Design Techniques for EMC Compliance Mark I. Montrose 1996 Hardcover 256 pp IEEE Order No. PC5595 ISBN 0-7803-1131-0 electromagnetic Compatibility in Power Electronics Laszlo Tihanyi 1995 Hardcover 416 pp IEEE Order No. PC3129 ISBN 0-7803-0416-0 Handbook of Electrical and Electronic Insulating Materials Second Edition W. Tillar Shugg, Shugg Enterprises, Inc. 1995 Hardcover 608 pp IEEE Order No. PC 3780 ISBN 0-7803-1030-6.
Book Synopsis Power Electronics, Drives, and Advanced Applications by : Vinod Kumar
Download or read book Power Electronics, Drives, and Advanced Applications written by Vinod Kumar and published by CRC Press. This book was released on 2020-03-27 with total page 790 pages. Available in PDF, EPUB and Kindle. Book excerpt: Concern for reliable power supply and energy-efficient system design has led to usage of power electronics-based systems, including efficient electric power conversion and power semiconductor devices. This book provides integration of complete fundamental theory, design, simulation and application of power electronics, and drives covering up-to-date subject components. It contains twenty-one chapters arranged in four sections on power semiconductor devices, basic power electronic converters, advanced power electronics converters, power supplies, electrical drives and advanced applications. Aimed at senior undergraduate and graduate students in electrical engineering and power electronics including related professionals, this book • Includes electrical drives such as DC motor, AC motor, special motor, high performance motor drives, solar, electrical/hybrid vehicle and fuel cell drives • Reviews advances in renewable energy technologies (wind, PV, hybrid power systems) and their integration • Explores topics like distributed generation, microgrid, and wireless power transfer system • Includes simulation examples using MATLAB®/Simulink and over four hundred solved, unsolved and review problems
Book Synopsis Modular Multilevel Converters by : Sixing Du
Download or read book Modular Multilevel Converters written by Sixing Du and published by John Wiley & Sons. This book was released on 2018-01-11 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt: An invaluable academic reference for the area of high-power converters, covering all the latest developments in the field High-power multilevel converters are well known in industry and academia as one of the preferred choices for efficient power conversion. Over the past decade, several power converters have been developed and commercialized in the form of standard and customized products that power a wide range of industrial applications. Currently, the modular multilevel converter is a fast-growing technology and has received wide acceptance from both industry and academia. Providing adequate technical background for graduate- and undergraduate-level teaching, this book includes a comprehensive analysis of the conventional and advanced modular multilevel converters employed in motor drives, HVDC systems, and power quality improvement. Modular Multilevel Converters: Analysis, Control, and Applications provides an overview of high-power converters, reference frame theory, classical control methods, pulse width modulation schemes, advanced model predictive control methods, modeling of ac drives, advanced drive control schemes, modeling and control of HVDC systems, active and reactive power control, power quality problems, reactive power, harmonics and unbalance compensation, modeling and control of static synchronous compensators (STATCOM) and unified power quality compensators. Furthermore, this book: Explores technical challenges, modeling, and control of various modular multilevel converters in a wide range of applications such as transformer and transformerless motor drives, high voltage direct current transmission systems, and power quality improvement Reflects the latest developments in high-power converters in medium-voltage motor drive systems Offers design guidance with tables, charts graphs, and MATLAB simulations Modular Multilevel Converters: Analysis, Control, and Applications is a valuable reference book for academic researchers, practicing engineers, and other professionals in the field of high power converters. It also serves well as a textbook for graduate-level students.
Book Synopsis Power Systems Harmonics by : George J. Wakileh
Download or read book Power Systems Harmonics written by George J. Wakileh and published by Springer Nature. This book was released on 2019-06-12 with total page 525 pages. Available in PDF, EPUB and Kindle. Book excerpt: Aiming at a better understanding of power system harmonics, this text presents a discussion of this issue, providing a quantitative analysis when possible. Pertinent equations are developed. 80 practical case studies based on real-life work experience come with the text. These are analysed providing the results and commenting on the output. Furthermore, 80 end-of-chapter problems are provided. A detailed solution manual is available. The book can be used as a textbook for undergraduate and graduate students, in short-courses offered by consultants and institutes, as well as a tutorial, reference, or self-study course for practising engineers in the industry and electric utility.
Book Synopsis Analysis and Design of Discontinuous Conduction Mode AC-DC Power Factor Correction Converters by : Sivanagaraju Gangavarapu
Download or read book Analysis and Design of Discontinuous Conduction Mode AC-DC Power Factor Correction Converters written by Sivanagaraju Gangavarapu and published by . This book was released on 2021 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: In more electric aircrafts (MEAs), the synchronous generators are connected directly to the turbo-engine to develop constant voltage variable frequency (CVVF) AC supply bus. In addition, the MEA has adopted high voltage DC bus in its power system to cater the various categories of load used by aircraft. Therefore, the MEA requires AC-DC power converters to convert CVVF AC to constant DC. Existing diode-bridge based passive multi-pulse AC-DC converters are suffering from heavy and bulky low frequency 350 Hz transformers, poor input power quality, low efficiency and unregulated output voltage. To overcome these drawbacks, this thesis work proposes and studies several new active switched-mode AC-DC converters (isolated and non-isolated) strictly satisfying the enhanced requirements of the aircraft application. The vital constituent in active AC-DC power conversion is the power factor correction (PFC). Understanding the certain limitations of the continuous conduction mode (CCM) operation for CVVF AC supply, the proposed converters are designed to operate in discontinuous conduction mode (DCM) to make use of its obvious benefits such as inherent PFC, reduced number of sensors, simple control, inherent zero current turn-on of the switches, and inherent zero diode reverse recovery losses. A single sensor based simple voltage control loop is only used to obtain the tightly regulated output voltage, which makes it economical, and improves the system reliability and robustness to high-frequency noise. At first, a three-phase modular single-stage-isolated Cuk converter is proposed on considering Cuk converter merits such as inrush current limitation, no input filter requirement, and easy implementation of high frequency transformer isolation. The phase-modular converters are easy to implement, can be paralleled easily for high power design, operational with two-phase loss, and provide quick repair and maintenance. However, they employ more number of components and suffering from higher conduction losses. To overcome these issues, a new direct three-phase non-isolated Cuk-derived PFC converter with reduced number of components and conduction losses is proposed. With this new topology, the conduction losses are significantly reduced, and efficiency is improved by 4 % compared to the previously analyzed phase-modular converter. However, this converter needs two DC-link capacitors for its operation at DC output that added extra capacitive losses. Further to reduce the capacitive losses, a new direct three-phase non-isolated buck-boost-derived PFC converter with one DC-link capacitor and reduced capacitive losses, along with retention of all the benefits of Cuk-derived PFC converter is proposed. For high power operations, interleaved topology of the three-phase buck-boost-derived PFC converter with reduced filter size, reduced losses, and improved efficiency is proposed. Finally, an isolated topology of the three-phase buck-boost-derived PFC converter with a novel clamping circuit to capture and utilize the transformers leakage inductance energy in order to improve the converter efficiency is proposed. The converters steady-state operation, DCM condition, and design equations are reported in detail. The small-signal models for all the proposed topologies using average current injected equivalent circuit approach are developed, and a detailed closed-loop controller design is illustrated. The simulation results from PSIM 11.1 software and the experimental results from proof-of-concept laboratory hardware prototypes are provided in order to validate the report analysis, design, and performance.
Book Synopsis Advanced DC-DC Power Converters and Switching Converters by : Salvatore Musumeci
Download or read book Advanced DC-DC Power Converters and Switching Converters written by Salvatore Musumeci and published by MDPI. This book was released on 2021-03-30 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nowadays, power electronics is an enabling technology in the energy development scenario. Furthermore, power electronics is strictly linked with several fields of technological growth, such as consumer electronics, IT and communications, electrical networks, utilities, industrial drives and robotics, and transportation and automotive sectors. Moreover, the widespread use of power electronics enables cost savings and minimization of losses in several technology applications required for sustainable economic growth. The topologies of DC–DC power converters and switching converters are under continuous development and deserve special attention to highlight the advantages and disadvantages for use increasingly oriented towards green and sustainable development. DC–DC converter topologies are developed in consideration of higher efficiency, reliable control switching strategies, and fault-tolerant configurations. Several types of switching converter topologies are involved in isolated DC–DC converter and nonisolated DC–DC converter solutions operating in hard-switching and soft-switching conditions. Switching converters have applications in a broad range of areas in both low and high power densities. The articles presented in the Special Issue titled "Advanced DC-DC Power Converters and Switching Converters" consolidate the work on the investigation of the switching converter topology considering the technological advances offered by innovative wide-bandgap devices and performance optimization methods in control strategies used.
Book Synopsis Multi-MHz High Frequency Resonant DC-DC Power Converter by : Dianguo Xu
Download or read book Multi-MHz High Frequency Resonant DC-DC Power Converter written by Dianguo Xu and published by Springer Nature. This book was released on 2020-08-08 with total page 129 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book analyzes multi-MHz high frequency resonant DC-DC power converters with operating frequencies ranging from several MHz to tens of MHz in detail, aiming to support researchers and engineers with a focus on multi-MHz high frequency converters. The inverter stage, rectifier stage, matching network stage are analyzed in detail. Based on the three basic stages, typical non-isolated and isolated resonant DC-DC converters are depicted. To reduce the high driving loss under multi-MHz, resonant driving methods are introduced and improved. Also, the design and selection methods of passive and active component under multi-MHz frequency are described, especially for aircore inductor and transformer. Furthermore, multi-MHz resonant converter provides an approach for achieving flexible system.
Book Synopsis Emerging Power Converters for Renewable Energy and Electric Vehicles by : Md. Rabiul Islam
Download or read book Emerging Power Converters for Renewable Energy and Electric Vehicles written by Md. Rabiul Islam and published by CRC Press. This book was released on 2021-05-30 with total page 419 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book covers advancements of power electronic converters and their control techniques for grid integration of large-scale renewable energy sources and electrical vehicles. Major emphasis is on transformer-less direct grid integration, bidirectional power transfer, compensation of grid power quality issues, DC system protection and grounding, interaction in mixed AC/DC systems, AC and DC system stability, design of high-frequency high power density systems with advanced soft magnetic materials, modeling and simulation of mixed AC/DC systems, switching strategies for enhanced efficiency, and protection and reliability for sustainable grid integration. This book is an invaluable resource for professionals active in the field of renewable energy and power conversion. Md. Rabiul Islam received his PhD from the University of Technology Sydney (UTS), Australia. He was appointed as a Lecturer at Rajshahi University of Engineering & Technology (RUET) in 2005 and promoted to full-term Professor in 2017. In early 2018, he joined the School of Electrical, Computer, and Telecommunications Engineering, University of Wollongong, Australia. He is a Senior Member of IEEE. His research interests include the fields of power electronic converters, renewable energy technologies, power quality, electrical machines, electric vehicles, and smart grids. He has authored or coauthored more than 200 publications including 50 IEEE Transactions/IEEE Journal papers. He has been serving as an editor for IEEE Transactions on Energy Conversion and IEEE Power Engineering Letters, and associate editor for IEEE Access. Md. Rakibuzzaman Shah is a Senior Lecturer with the School of Engineering, Information Technology and Physical Science at Federation University Australia. He has worked and consulted with distribution network operators and transmission system operators on individual projects and has done collaborative work on a large number of projects (EPSRC project on multi-terminal HVDC, Scottish and Southern Energy multi-infeed HVDC) - primarily on the dynamic impact of integrating new technologies and power electronics into large systems. He is an active member of the IEEE and CIGRE. He has more than 70 international publications and has spoken at the leading power system conferences around the world. His research interests include future power grids (i.e., renewable energy integration, wide-area control), asynchronous grid connection through VSC-HVDC, application of data mining in power system, distribution system energy management, and low carbon energy systems. Mohd. Hasan Ali is currently an Associate Professor with the Electrical and Computer Engineering Department at the University of Memphis, USA, where he leads the Electric Power and Energy Systems (EPES) Laboratory. His research interests include advanced power systems, smart-grid and microgrid systems, renewable energy systems, and cybersecurity issues in modern power grids. Dr. Ali has more than 190 publications, including 2 books, 4 book chapters, 2 patents, 60 top ranked journal papers, 96 peer-reviewed international conference papers, and 20 national conference papers. He serves as the editor of the IEEE Transactions on Sustainable Energy and IET-Generation, Transmission and Distribution (GTD) journal. Dr. Ali is a Senior Member of the IEEE Power and Energy Society (PES). He is also the Chair of the PES of the IEEE Memphis Section.
Book Synopsis Analysis, Optimization and Control of Grid-Interfaced Matrix-Based Isolated AC-DC Converters by : Jaydeep Saha
Download or read book Analysis, Optimization and Control of Grid-Interfaced Matrix-Based Isolated AC-DC Converters written by Jaydeep Saha and published by Springer Nature. This book was released on 2022-11-05 with total page 295 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents novel contributions in the development of solid-state-transformer (SST) technology both for medium-voltage (MV) and low-voltage (LV) utility grid interfaces, which can potentially augment the grid modernization process in the evolving power system paradigm. For the MV interface, a single-stage AC-DC SST submodule topology has been proposed, and its modulation and soft-switching possibilities are analysed, experimentally validated and adequately benchmarked. A control scheme with power balance capability among submodules is developed for MV grid-connected single-stage AC-DC SST for smooth operation under inevitable parameter drift scenario, and experimental validation shows excellent performance under drastic load change conditions. A novel machine learning-aided multi-objective design optimization framework for grid-connected SST is developed and experimentally validated, which equips a power electronics design engineer with meagre computational resources to find out the most optimal SST design in a convenient time-frame. This book has also contributed towards the development of dual-active-bridge (DAB)-type and non-DAB-type LV grid-interfaced isolated AC-DC converters by providing solutions to specific topology and modulation-related shortcomings in these two types of topologies. A comprehensive comparison of the DAB and non-DAB-type LVAC-LVDC converters reveals the superiority of DAB-type conversion strategy.
Download or read book Power Quality written by Bhim Singh and published by John Wiley & Sons. This book was released on 2015-02-16 with total page 596 pages. Available in PDF, EPUB and Kindle. Book excerpt: Maintaining a stable level of power quality in the distribution network is a growing challenge due to increased use of power electronics converters in domestic, commercial and industrial sectors. Power quality deterioration is manifested in increased losses; poor utilization of distribution systems; mal-operation of sensitive equipment and disturbances to nearby consumers, protective devices, and communication systems. However, as the energy-saving benefits will result in increased AC power processed through power electronics converters, there is a compelling need for improved understanding of mitigation techniques for power quality problems. This timely book comprehensively identifies, classifies, analyses and quantifies all associated power quality problems, including the direct integration of renewable energy sources in the distribution system, and systematically delivers mitigation techniques to overcome these problems. Key features: • Emphasis on in-depth learning of the latest topics in power quality extensively illustrated with waveforms and phasor diagrams. • Essential theory supported by solved numerical examples, review questions, and unsolved numerical problems to reinforce understanding. • Companion website contains solutions to unsolved numerical problems, providing hands-on experience. Senior undergraduate and graduate electrical engineering students and instructors will find this an invaluable resource for education in the field of power quality. It will also support continuing professional development for practicing engineers in distribution and transmission system operators.
Book Synopsis Improved Power Quality AC/DC Converters by : Abdul Hamid Bhat
Download or read book Improved Power Quality AC/DC Converters written by Abdul Hamid Bhat and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Improved Power Quality AC/DC Converters.
Book Synopsis Power Converters for Medium Voltage Networks by : Md. Rabiul Islam
Download or read book Power Converters for Medium Voltage Networks written by Md. Rabiul Islam and published by Springer. This book was released on 2014-09-15 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book examines a number of topics, mainly in connection with advances in semiconductor devices and magnetic materials and developments in medium and large-scale renewable power plant technologies, grid integration techniques and new converter topologies, including advanced digital control systems for medium-voltage networks. The book’s individual chapters provide an extensive compilation of fundamental theories and in-depth information on current research and development trends, while also exploring new approaches to overcoming some critical limitations of conventional grid integration technologies. Its main objective is to present the design and implementation processes for medium-voltage converters, allowing the direct grid integration of renewable power plants without the need for step-up transformers.
Book Synopsis Advanced Multiphasing Switched-Capacitor DC-DC Converters by : Nicolas Butzen
Download or read book Advanced Multiphasing Switched-Capacitor DC-DC Converters written by Nicolas Butzen and published by Springer Nature. This book was released on 2020-07-03 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book gives a detailed analysis of switched-capacitor DC-DC converters that are entirely integrated on a single chip and establishes that these converters are mainly limited by the large parasitic coupling, the low capacitor energy density, and the fact that switched-capacitor converter topologies only have a fixed voltage conversion ratio. The authors introduce the concept of Advanced Multiphasing as a way to circumvent these limitations by having multiple out-of-phase parallel converter cores interact with each other to minimize capacitor charging losses, leading to several techniques that demonstrate record efficiency and power-density, and even a fundamentally new type of switched-capacitor topology that has a continuously-scalable conversion ratio. Provides single-source reference to the recently-developed Advanced Multiphasing concept; Enables greatly improved performance and capabilities in fully integrated switched-capacitor converters; Enables readers to design DC-DC converters, where multiple converter cores are put in parallel and actively interact with each other over several phases to improve their capabilities.
