Download or read book Applications of Quasi fixed Frequency Current mode Power Converters written by Yue Wen and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Modern Power Electronics written by PC Sen and published by S. Chand Publishing. This book was released on 2005-03 with total page 976 pages. Available in PDF, EPUB and Kindle. Book excerpt: I May observed that recent developments in power electronics have proceeded in two different directions,namely,low power range power supplies using high frequency PWM technique and medium to high power range energy control systems to serve specific Purpose.
Download or read book Fixed switching Frequency Sliding Mode Control Applied to Power Converters written by Víctor Repecho del Corral and published by . This book was released on 2018 with total page 186 pages. Available in PDF, EPUB and Kindle. Book excerpt: The application of the sliding mode control in power converters has a well-known inconvenient from the practical point of view, which is to obtain fixed switching frequency implementations. This thesis deals with the development of a hysteresis band controller in charge of fixing the switching frequency of a sliding motion in power electronics applications. The proposed control measures the switching period of the control signal and modifies the hysteresis band of the comparator in order to regulate the switching frequency of the sliding motion. The proposed structure becomes in an additional control loop aside from main control loop implementing the sliding mode controller. In the first part of the thesis, the switching frequency control system is modelled and a design criteria for the control parameters are derived for guaranteeing closed loop stability, under different approaches and taking into account the most expectable working scenarios. In the second part of the thesis, the proposed strategies are applied to several power converters prototypes. Specifically, DC-to-DC and DC-to-AC power converters are built and the experimental results are shown. In this part, the strategies used for implementing the controllers are also deeply discussed.
Download or read book Advances in Variable Structure Systems and Sliding Mode Control Theory and Applications written by Shihua Li and published by Springer. This book was released on 2017-08-10 with total page 414 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book reflects the latest developments in variable structure systems (VSS) and sliding mode control (SMC), highlighting advances in various branches of the VSS/SMC field, e.g., from conventional SMC to high-order SMC, from the continuous-time domain to the discrete-time domain, from theories to applications, etc. The book consists of three parts and 16 chapters: in the first part, new VSS/SMC algorithms are proposed and their properties are analyzed, while the second focuses on the use of VSS/SMC techniques to solve a variety of control problems; the third part examines the applications of VSS/SMC to real-time systems. The book introduces postgraduates and researchers to the state-of-the-art in VSS/SMC field, including the theory, methodology, and applications. Relative academic disciplines include Automation, Mathematics, Electrical Engineering, Mechanical Engineering, Instrument Science and Engineering, Electronic Engineering, Computer Science and Technology, Transportation Engineering, Energy and Power Engineering, etc.
Download or read book Power Switching Converters written by Simon Ang and published by CRC Press. This book was released on 2010-12-20 with total page 654 pages. Available in PDF, EPUB and Kindle. Book excerpt: Significantly expanded and updated with extensive revisions, new material, and a new chapter on emerging applications of switching converters, Power-Switching Converters, Third Edition offers the same trusted, accessible, and comprehensive information as its bestselling predecessors. Similar to the two previous editions, this book can be used for a
Download or read book Recent Advances in Electrical Engineering and Control Applications written by Mohammed Chadli and published by Springer. This book was released on 2016-12-01 with total page 419 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book of proceedings includes papers presenting the state of art in electrical engineering and control theory as well as their applications. The topics focus on classical as well as modern methods for modeling, control, identification and simulation of complex systems with applications in science and engineering. The papers were selected from the hottest topic areas, such as control and systems engineering, renewable energy, faults diagnosis—faults tolerant control, large-scale systems, fractional order systems, unconventional algorithms in control engineering, signals and communications. The control and design of complex systems dynamics, analysis and modeling of its behavior and structure is vitally important in engineering, economics and in science generally science today. Examples of such systems can be seen in the world around us and are a part of our everyday life. Application of modern methods for control, electronics, signal processing and more can be found in our mobile phones, car engines, home devices like washing machines is as well as in such advanced devices as space probes and systems for communicating with them. All these technologies are part of technological backbone of our civilization, making further research and hi-tech applications essential. The rich variety of contributions appeals to a wide audience, including researchers, students and academics.
Download or read book Origin of Power Converters written by Tsai-Fu Wu and published by John Wiley & Sons. This book was released on 2020-04-14 with total page 416 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comprehensive guide to approaches to decoding, synthesizing and modeling pulse width modulation (PWM) converters Origin of Power Converters explores the original converter and provides a systematic examination of the development and modeling of power converters based on decoding and synthesizing approaches. The authors—noted experts on the topic—present an introduction to the origins of the converter and detail the fundamentals related to power the converter’s evolution. They cover a range of converter synthesis approaches, synthesis of multi-stage/multi-level converters, extension of hard-switching converters to soft-switching ones, and determination of switch-voltage stresses in the converters. In later chapters, this comprehensive resource reviews conventional two-port network theory and the state-space averaged (SSA) modeling approach, from which systematic modeling approaches are based on the graft switch technique. In addition, the book reviews the converter layer scheme and some fundamental circuit theories. This important book: • Contains a review of several typical transfer codes, such as step-down, step-up, step-up&-down, and ± step-up&-down • Describes the syntheses of pulse width modulation (PWM) converters such as voltage-fed z-source, current-fed z-source, quasi z-source, switched capacitor, and switched inductor converters • Presents two application examples based on previously proposed modeling approaches Written for academic researchers, graduate students, and seniors in power electronics, Origin of Power Converters provides a comprehensive understanding of the evolution of the converter and its applications.
Download or read book Resonant Power Converters written by Marian K. Kazimierczuk and published by John Wiley & Sons. This book was released on 2012-11-07 with total page 632 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is devoted to resonant energy conversion in power electronics. It is a practical, systematic guide to the analysis and design of various dc-dc resonant inverters, high-frequency rectifiers, and dc-dc resonant converters that are building blocks of many of today's high-frequency energy processors. Designed to function as both a superior senior-to-graduate level textbook for electrical engineering courses and a valuable professional reference for practicing engineers, it provides students and engineers with a solid grasp of existing high-frequency technology, while acquainting them with a number of easy-to-use tools for the analysis and design of resonant power circuits. Resonant power conversion technology is now a very hot area and in the center of the renewable energy and energy harvesting technologies.
Download or read book Advanced Control Methodologies For Power Converter Systems written by Wensheng Luo and published by Springer Nature. This book was released on 2022-02-16 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book aims to present some advanced control methodologies for power converters. Power electronic converters have become indispensable devices for plenty of industrial applications over the last decades. Composed by controllable power switches, they can be controlled by effective strategies to achieve desirable transient response and steady-state performance, to ensure the stability, reliability and safety of the system. The most popular control strategy of power converters is the linear proportional–integral–derivative series control which is adopted as industry standard. However, when there exist parameter changes, nonlinearities and load disturbances in the system, the performance of the controller will be significantly degraded. To overcome this problem, many advanced control methodologies and techniques have been developed to improve the converter performance. This book presents the research work on some advanced control methodologies for several types of power converters, including three-phase two-level AC/DC power converter, three-phase NPC AC/DC power converter, and DC/DC buck converter. The effectiveness and advantage of the proposed control strategies are verified via simulations and experiments. The content of this book can be divided into two parts. The first part focuses on disturbance observer-based control methods for power converters under investigation. The second part investigates intelligent control methods. These methodologies provide a framework for controller design, observer design, stability and performance analysis for the considered power converter systems.
Download or read book Design Considerations for Radio Frequency Power Converters written by Lei Gu (Researcher in power electronics) and published by . This book was released on 2019 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Compact and efficient high-frequency power converters and amplifiers are needed in a variety of applications, including base stations, mobile devices, and medical equipment. The ever-growing need for a smaller size, longer battery life, and lower cost introduces challenging design considerations for radio-frequency power converters. Today, these radio-frequency resonant converters use harmonic tuning to shape the voltage or current waveform of the switching device, with the primary goals of reducing device stress and increasing achievable efficiency. Although harmonic-tuned resonant converters can be very compact and efficient for a certain condition, significant challenges remain to widespread adoption, including limited high-efficiency range, complicated design procedures, and higher device stress compared with conventional approaches. This thesis presents circuit techniques that can extend the voltage, frequency, and efficiency ranges of radio-frequency power converters and provides more straightforward analysis and easy-to-implement design procedures. This thesis first presents a multi-resonant gate driver circuit developed using the harmonic wave-shaping technique that significantly reduces the high-frequency gate driving losses for Si and SiC MOSFETs. By controlling different harmonic components of an ideal square wave, we can resonantly shape a quasi-square voltage waveform at the gate. This gate driver is simple to control and has a low component count. Compared with a sine wave gate signal, this method reduces the transition time between the MOSFET is fully enhanced and turned-off, driving down the switching losses. Compared with similar multi-resonant drivers that are self-oscillating, this driver reduces the long start-up time required to reach steady-state. Intuitive design methodologies based on the frequency-domain plot are introduced. Using this technique, we are able to resonantly drive a Si MOSFET at 20 MHz and recycle 60% of the hard-switching gate-driving loss. We also demonstrate this driver on a SiC MOSFET switching at 30 MHz and save 80% of the hard-switching loss. Modern applications demand power converters to maintain a constant voltage output with high efficiency across significant load variation. This thesis presents a bidirectional dc-dc converter that enables efficient fixed-ratio voltage conversion at tens of megahertz. By selecting a proper matching network for the intermediate gain stage, we address multiple challenges simultaneously; a) replacing a lossy passive diode with a more efficient active transistor, b) maintaining efficient soft-switching operation, and c) a constant voltage conversion ratio over a wide load range. A 64 MHz, 12 W, 36 V-to-12 V prototype converter with 75% peak efficiency verifies the operation of the structure. An interleaved configuration is then proposed to improve the efficiency and transient performance of a single-phase structure. A 13.56 MHz, 210 V-to-30 V prototype converter with 90% peak efficiency at 200 W demonstrates the advantages of this proposed structure. RF power amplifiers underpin many systems that support our modern infrastructure. The Class EF and E/F family of harmonic-tuned switch-mode amplifiers have simple gate drives, reduced voltage stress, and higher output power capabilities than a conventional Class E circuit. To best utilize the performance potential of this family of circuits, this thesis presents a novel push-pull Phi2 (EF2) amplifier using interleaving and series-stacking techniques, denoted as a PPT Phi2 circuit. This series-stacked PPT Phi2 circuit combines all of the main advantages of different topologies, like the simplicity of gate driving, highest cut-off frequency, lowest voltage stress, and load-invariant operation. A compact 6.78 MHz, 100 V, 300 W prototype converter is demonstrated. Using lowcost Si devices, the prototype converter achieves 96% peak total efficiency and maintains above 94.5% drain efficiency across a wide range of voltage and power. This new series-stacked PPT F2 RF amplifier doubles the maximum operating frequency and voltage range of a Class EF or E/F amplifier with benefits in many modern applications that require high-frequency high-power RF signals, like wireless charging for electric vehicles, plasma RF drives, and nuclear magnetic resonance (NMR) spectroscopy.
Download or read book Design and Control of Power Converters 2020 written by Manuel Arias and published by MDPI. This book was released on 2021-06-04 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this book, nine papers focusing on different fields of power electronics are gathered, all of which are in line with the present trends in research and industry. Given the generality of the Special Issue, the covered topics range from electrothermal models and losses models in semiconductors and magnetics to converters used in high-power applications. In this last case, the papers address specific problems such as the distortion due to zero-current detection or fault investigation using the fast Fourier transform, all being focused on analyzing the topologies of high-power high-density applications, such as the dual active bridge or the H-bridge multilevel inverter. All the papers provide enough insight in the analyzed issues to be used as the starting point of any research. Experimental or simulation results are presented to validate and help with the understanding of the proposed ideas. To summarize, this book will help the reader to solve specific problems in industrial equipment or to increase their knowledge in specific fields.
Download or read book Dynamics and Control of Switched Electronic Systems written by Francesco Vasca and published by Springer Science & Business Media. This book was released on 2012-03-30 with total page 493 pages. Available in PDF, EPUB and Kindle. Book excerpt: The increased efficiency and quality constraints imposed on electrical energy systems have inspired a renewed research interest in the study of formal approaches to the analysis and control of power electronics converters. Switched systems represent a useful framework for modeling these converters and the peculiarities of their operating conditions and control goals justify the specific classification of “switched electronic systems”. Indeed, idealized switched models of power converters introduce problems not commonly encountered when analyzing generic switched models or non-switched electrical networks. In that sense the analysis of switched electronic systems represents a source for new ideas and benchmarks for switched and hybrid systems generally. Dynamics and Control of Switched Electronic Systems draws on the expertise of an international group of expert contributors to give an overview of recent advances in the modeling, simulation and control of switched electronic systems. The reader is provided with a well-organized source of references and a mathematically-based report of the state of the art in analysis and design techniques for switched power converters. Intuitive language, realistic illustrative examples and numerical simulations help the reader to come to grips with the rigorous presentation of many promising directions of research such as: converter topologies and modulation techniques; continuous-time, discrete-time and hybrid models; modern control strategies for power converters; and challenges in numerical simulation. The guidance and information imparted in this text will be appreciated by engineers, and applied mathematicians working on system and circuit theory, control systems development, and electronic and energy conversion systems design.
Download or read book New Trends and Developments in Automotive System Engineering written by Marcello Chiaberge and published by BoD – Books on Demand. This book was released on 2011-01-08 with total page 681 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the last few years the automobile design process is required to become more responsible and responsibly related to environmental needs. Basing the automotive design not only on the appearance, the visual appearance of the vehicle needs to be thought together and deeply integrated with the power developed by the engine. The purpose of this book is to try to present the new technologies development scenario, and not to give any indication about the direction that should be given to the research in this complex and multi-disciplinary challenging field.
Download or read book Design and Control of Power Converters 2019 written by Manuel Arias and published by MDPI. This book was released on 2021-07-02 with total page 402 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this book, 20 papers focused on different fields of power electronics are gathered. Approximately half of the papers are focused on different control issues and techniques, ranging from the computer-aided design of digital compensators to more specific approaches such as fuzzy or sliding control techniques. The rest of the papers are focused on the design of novel topologies. The fields in which these controls and topologies are applied are varied: MMCs, photovoltaic systems, supercapacitors and traction systems, LEDs, wireless power transfer, etc.
Download or read book Power Electronic Converters written by Eric Monmasson and published by John Wiley & Sons. This book was released on 2013-03-04 with total page 403 pages. Available in PDF, EPUB and Kindle. Book excerpt: A voltage converter changes the voltage of an electrical power source and is usually combined with other components to create a power supply. This title is devoted to the control of static converters, which deals with pulse-width modulation (PWM) techniques, and also discusses methods for current control. Various application cases are treated. The book is ideal for professionals in power engineering, power electronics, and electric drives industries, as well as practicing engineers, university professors, postdoctoral fellows, and graduate students.
Download or read book Power Electronics Handbook written by Muhammad H. Rashid and published by Elsevier. This book was released on 2010-07-19 with total page 1189 pages. Available in PDF, EPUB and Kindle. Book excerpt: Power electronics, which is a rapidly growing area in terms of research and applications, uses modern electronics technology to convert electric power from one form to another, such as ac-dc, dc-dc, dc-ac, and ac-ac with a variable output magnitude and frequency. Power electronics has many applications in our every day life such as air-conditioners, electric cars, sub-way trains, motor drives, renewable energy sources and power supplies for computers. This book covers all aspects of switching devices, converter circuit topologies, control techniques, analytical methods and some examples of their applications.* 25% new content* Reorganized and revised into 8 sections comprising 43 chapters* Coverage of numerous applications, including uninterruptable power supplies and automotive electrical systems* New content in power generation and distribution, including solar power, fuel cells, wind turbines, and flexible transmission
Download or read book Advanced Multilevel Converters and Applications in Grid Integration written by Ali Iftekhar Maswood and published by John Wiley & Sons. This book was released on 2018-10-09 with total page 496 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comprehensive survey of advanced multilevel converter design, control, operation and grid-connected applications Advanced Multilevel Converters and Applications in Grid Integration presents a comprehensive review of the core principles of advanced multilevel converters, which require fewer components and provide higher power conversion efficiency and output power quality. The authors – noted experts in the field – explain in detail the operation principles and control strategies and present the mathematical expressions and design procedures of their components. The text examines the advantages and disadvantages compared to the classical multilevel and two level power converters. The authors also include examples of the industrial applications of the advanced multilevel converters and offer thoughtful explanations on their control strategies. Advanced Multilevel Converters and Applications in Grid Integration provides a clear understanding of the gap difference between research conducted and the current industrial needs. This important guide: Puts the focus on the new challenges and topics in related areas such as modulation methods, harmonic analysis, voltage balancing and balanced current injection Makes a strong link between the fundamental concepts of power converters and advances multilevel converter topologies and examines their control strategies, together with practical engineering considerations Provides a valid reference for further developments in the multilevel converters design issue Contains simulations files for further study Written for university students in electrical engineering, researchers in areas of multilevel converters, high-power converters and engineers and operators in power industry, Advanced Multilevel Converters and Applications in Grid Integration offers a comprehensive review of the core principles of advanced multilevel converters, with contributions from noted experts in the field.
