Download Modular Multilevel Converters Book PDF

Download full Modular Multilevel Converters books PDF, EPUB, Tuebl, Textbook, Mobi or read online Modular Multilevel Converters anytime and anywhere on any device. Get free access to the library by create an account, fast download and ads free. We cannot guarantee that every book is in the library.

Modular Multilevel Converters

Modular Multilevel Converters
  • Author : Sixing Du,Apparao Dekka,Bin Wu,Navid Zargari
  • Publisher :Unknown
  • Release Date :2018-01-11
  • Total pages :368
  • ISBN : 9781119366300
GET BOOK HERE

Summary : 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.

Modular Multilevel Converters

Modular Multilevel Converters
  • Author : Sixing Du,Apparao Dekka,Bin Wu,Navid Zargari
  • Publisher :Unknown
  • Release Date :2018-02-22
  • Total pages :368
  • ISBN : 9781119367239
GET BOOK HERE

Summary : 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.

Modular Multilevel Converters

Modular Multilevel Converters
  • Author : Sixing Du,Apparao Dekka,Bin Wu,Navid Zargari
  • Publisher :Unknown
  • Release Date :2017-11-20
  • Total pages :368
  • ISBN : 9781119366515
GET BOOK HERE

Summary : 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.

Application of Modular Multilevel Converters (MMC) Using Phase-shifted PWM and Selective Harmonic Elimination in Distribution Systems

Application of Modular Multilevel Converters (MMC) Using Phase-shifted PWM and Selective Harmonic Elimination in Distribution Systems
  • Author : Thouhidul Islam
  • Publisher :Unknown
  • Release Date :2018
  • Total pages :222
  • ISBN : OCLC:1090815199
GET BOOK HERE

Summary : Reducing the size and weight of a power electric system is a prodigious challenge to researchers as the development of the latest technologies emerge in the field of electrical engineering. A similar urge is there to develop a light-weight mobile power substation (MPS) to use in the electric power distribution systems during emergency conditions. This thesis proposes a power electronics based solution using the modular multilevel converter (MMC) topology to design the MPS system. The market-available power semiconductor devices are analyzed and suitable devices are selected to design the system. The phase-shifted pulse width modulation (PS-PWM) and selective harmonic elimination (SHE) switching algorithms are selected to modulate the MMC terminals. To validate the proposed techniques simulation files are built in MATLAB/SIMULINKTM. Simulation results are presented and analyzed to verify the theoretical claims. These simulation results prove the feasibility of designing the MPS system with the proposed techniques.

Control and Modulation of Modular Multilevel Converters

Control and Modulation of Modular Multilevel Converters
  • Author : Ricard Picas Prat
  • Publisher :Unknown
  • Release Date :2017
  • Total pages :242
  • ISBN : OCLC:1120520085
GET BOOK HERE

Summary : The integration of renewable energy sources in the electrical grid is reducing our dependence on fossil fuels. However, to ensure feasibility and reliability of distributed energy generation, more efficient and higher power converters are required. The modular multilevel converter (07C) is a modern topology of multilevel converter that is very attractive for medium- and high-voltage/power applications, including high-voltage direct current transmission systems and high-power motor drives. The main features of the 07C are modularity, scalability to different power and voltage levels, redundancy and high quality output voltages and currents. However, the operation of the 07C is complex, and there are some issues that still have to be further investigated. One of these issues is the voltage ripples of the submodule (SM) capacitors. The voltage ripples define the minimum value of the capacitances needed for the converter, and therefore its overall size and cost. The use of a proper circulating current controller can reduce the voltage ripples. In this thesis, three techniques for calculating the circulating current reference are presented: two techniques based on optimization functions for minimizing the capacitor voltage ripples; and a fast-processing technique that provides results close to optimal. The capacitor voltage ripples can also be reduced by adding a zero-sequence signal to the modulation signals. In this thesis, the application of discontinuous modulation to the 07C is proposed for the first time. This technique is based on the injection of a discontinuous zero-sequence signal and highly reduces the switching power losses and capacitor voltage ripples. Real applications of the 07C are composed of a high number of SMs. This implies a challenge in the control system, including the data acquisition system. A new technique for measuring the capacitor voltages with only a few sensors has been presented in this thesis. From the output voltage provided by a group of SMs, the individual voltage of each one of them can be acquired. Since acquisition cannot be performed at each sampling time, the capacitor voltages are calculated between samples using an estimation algorithm. Reliability is a feature required in industrial applications. The structure of the 07C facilitates the existence of redundant SMs, but faults need to be detected and localized for deactivating the faulty component. This thesis presents a robust and fast strategy for detecting, localizing and correcting faults in SMs and voltage sensors. The technique is based on three additional sensors per arm, which measure the output voltage of a group of SMs and compare it with the expected voltage. Capacitance differences between the SMs can appear due to component tolerance or ageing of the capacitors. Capacitance mismatches cause uneven distribution of the power losses, thus increasing the thermal stress of some semiconductors, and therefore, their probability of failure. A power loss balancing technique has been proposed, equalising the losses in all the SMs and therefore avoiding the concentration of power losses in some SMs. Application of the 07C to motor drive applications has also been studied in this thesis. The operation of the 07C at low motor speeds/frequencies is still a challenge, since the capacitor voltage ripples are inversely proportional to the current frequency. In this thesis, it has been demonstrated that discontinuous modulation can help to reduce capacitor voltage ripples in motor drive applications, achieving very low speed operation. The technique is compared with other state-of-the-art methods, and it achieves similar capacitor voltage ripples and a significant reduction in power losses. All the control and modulation techniques proposed in this thesis have been studied by simulation in the MATLAB/Simulink environment and corroborated experimentally on low-power laboratory prototypes.

Design of Modular Multilevel Converter-based Solid State Transformers

Design of Modular Multilevel Converter-based Solid State Transformers
  • Author : Ali Shojaei
  • Publisher :Unknown
  • Release Date :2015
  • Total pages :229
  • ISBN : OCLC:908962605
GET BOOK HERE

Summary : "A Solid State Transformer (SST) performs the tasks of a conventional transformer by means of power electronic converters and high-frequency transformers. In addition to voltage level transformation, some SST topologies are able to provide ancillary services to the AC grid.In a three-stage SST, the first-stage is an AC/DC converter. In most designs, this stage employs a multilevel converter topology rather than a two-level converter. The reason for this is that a multilevel converter provides such advantages as capability to interface with a medium voltage AC grid. Among all multilevel converter topologies, a new generation of multilevel converters called Modular Multilevel Converter (MMC) has been considered to be a promising topology for medium/high voltage converters in back to back and High-Voltage DC (HVDC) applications.This thesis first studies the design, modulation, and control of an MMC. In this context, a modulation and control strategy is proposed which decreases the level of harmonics in the output voltage and current of the converter. Further, the proposed strategy pushes the harmonics towards higher frequencies and, hence, allows the converter to be switched at lower frequencies. Next, this thesis proposes a number of three-stage SST configurations employing an MMC in their first stage. An advantage of the proposed SST configurations is that they are readily scalable to higher voltage levels and power ratings; this enables the application of an SST in higher levels of electrical grids. Further, the proposed SSTs feature a high-voltage DC terminal in addition to the commonly provided terminals to enable connection of the SST to a DC distribution grid." --

Design, Control, and Application of Modular Multilevel Converters for HVDC Transmission Systems

Design, Control, and Application of Modular Multilevel Converters for HVDC Transmission Systems
  • Author : Kamran Sharifabadi,Lennart Harnefors,Hans-Peter Nee,Remus Teodorescu,Staffan Norrga
  • Publisher :Unknown
  • Release Date :2016-10-17
  • Total pages :412
  • ISBN : 9781118851562
GET BOOK HERE

Summary : Design, Control and Application of Modular Multilevel Converters for HVDC Transmission Systems is a comprehensive guide to semiconductor technologies applicable for MMC design, component sizing control, modulation, and application of the MMC technology for HVDC transmission. Separated into three distinct parts, the first offers an overview of MMC technology, including information on converter component sizing, Control and Communication, Protection and Fault Management, and Generic Modelling and Simulation. The second covers the applications of MMC in offshore WPP, including planning, technical and economic requirements and optimization options, fault management, dynamic and transient stability. Finally, the third chapter explores the applications of MMC in HVDC transmission and Multi Terminal configurations, including Supergrids. Key features: Unique coverage of the offshore application and optimization of MMC-HVDC schemes for the export of offshore wind energy to the mainland. Comprehensive explanation of MMC application in HVDC and MTDC transmission technology. Detailed description of MMC components, control and modulation, different modeling approaches, converter dynamics under steady-state and fault contingencies including application and housing of MMC in HVDC schemes for onshore and offshore. Analysis of DC fault detection and protection technologies, system studies required for the integration of HVDC terminals to offshore wind power plants, and commissioning procedures for onshore and offshore HVDC terminals. A set of self-explanatory simulation models for HVDC test cases is available to download from the companion website. This book provides essential reading for graduate students and researchers, as well as field engineers and professionals who require an in-depth understanding of MMC technology.

Quasi-two-level PWM Operation of Modular Multilevel Converters : Implementation, Analysis, and Application to Medium-voltage Drives

Quasi-two-level PWM Operation of Modular Multilevel Converters : Implementation, Analysis, and Application to Medium-voltage Drives
  • Author : Jakub Kucka
  • Publisher :Unknown
  • Release Date :2019
  • Total pages :229
  • ISBN : OCLC:1129746220
GET BOOK HERE

Summary :

Modular Multilevel Converters for Power System Applications

Modular Multilevel Converters for Power System Applications
  • Author : Abel António de Azevedo Ferreira
  • Publisher :Unknown
  • Release Date :2017
  • Total pages :358
  • ISBN : OCLC:1120540986
GET BOOK HERE

Summary : This thesis discusses the operation of the grid-tied modular multilevel converters (10C) applied on the dc power transmission, particularly on the medium and high-voltage applications. First, it is presented the evolution of the power converters used on the high-voltage dc transmission field (HVdc) with special focus on the modular multilevel-based power converters. Then, due to the intrinsic nature of the converter, besides the control requirements for its dc and ac buses interactions, its energy storage should be carefully managed in order to achieve a safe and knowledgeable operation of this power converter. Hence, its control requirements are presented and mathematically supported. Moreover, the progressive design and validation of its control loops is addressed in this thesis by means of the converter simulation over a broad range of operating conditions. One key-point factor of the 10C performance is the strategy followed to modulate the voltages generated on its arms. In this vision, different modulation techniques were combined with peculiar zero sequence signals in order to analyze their impact on the voltages across the converter arms and its intrinsic performance. This study was also complemented by different procedures followed to balance the energy storage of its capacitors. A transversal research question of this voltage source converter topology is its efficiency. Then, besides the analysis of the ac power flow impact on the power losses produced by its semiconductors, it is deduced and proposed a mathematical expression that that can describe the power losses produced semiconductors, over a broad range of operating conditions of the 10C. Finally, it is explored the possible degrees of freedom of an half-bridge-based 10C whenever it is operating in the static synchronous compensation (STATCOM) mode. Depending on the converter operation aspect that is required to be optimized, the voltage across its dc poles can be adjusted to achieve an improved performance of the 10C.

Design of a Modular Multilevel Converter

Design of a Modular Multilevel Converter
  • Author : Antoni Abril Castellano
  • Publisher :Unknown
  • Release Date :2013
  • Total pages :229
  • ISBN : OCLC:1224091967
GET BOOK HERE

Summary : Multilevel converters are power electronics topologies that can generate two or more voltage levels in each output phase. As a result, the voltage and current waveforms generated have lower total harmonic distortion. There are different configurations of multilevel converters, which consist on connecting power device or converters in series. Consequently, high voltage can be handled on the dc and ac side of the converter, while each device stands only a fraction of the total dc-link voltage. For these reason multilevel converters are generally used for high-power applications. Modular multilevel converter (MMC) is a recent topology for power conversion. During the last years, its popularity has increased due to its characteristics of modularity, availability and controllability. This topology is having a great relevance in the industry. MMC has a lot of advantages, especially for high voltage direct current lines (HVDC). The main objective is to study its operation and the main modulation techniques. It also has been made the study and design of a sub-module of this converter. The study and design of a sub-module of this topology has been done and designed with silicon carbide (SiC) MOSFETs transistors. This transistor can handle higher temperatures and has lower switching losses.

Modular Multilevel Converters for Electric Transportation Applications

Modular Multilevel Converters for Electric Transportation Applications
  • Author : Deepak Ronanki,Sheldon Williamson
  • Publisher :Unknown
  • Release Date :2020-05-08
  • Total pages :450
  • ISBN : 1119526256
GET BOOK HERE

Summary :

Optimal Sizing of Modular Multilevel Converters

Optimal Sizing of Modular Multilevel Converters
  • Author : Amin Zabihinejad
  • Publisher :Unknown
  • Release Date :2017
  • Total pages :169
  • ISBN : OCLC:1132073439
GET BOOK HERE

Summary : In the last decades, power electronics has penetrated high power applications in many areas of the electrical industry. After the emergence of high-voltage semiconductor switch technologies these applications also required advances in the field of static converter topologies: The main challenges were to achieve voltage levels compatible with the application power domain, to increase the apparent switching frequency at the output, to increase the control bandwidth, to reduce the size of the elements of filtering and of limiting the current harmonics injected into the supply network. The topologies of multi-level modular converters (MMC) are based on this research problem: they enable the use of switching cells to achieve high power levels that can be used with existing switch technologies, frequencies and switching losses of the elementary switches while controlling the total harmonic distortion (THD). Modularity, redundancy, degrees of freedom and MMC functionality also allow them to increase fault tolerance. They now penetrated a wide range of applications, such as high-voltage DC (HVDC), renewable energy systems, high-speed variable speed drives, rail and marine traction, and very specific applications in terms of dynamic performance such as electromagnet power systems in particle accelerators. MMC topologies are composed of elementary switching cells using electronic switches such as the standard Integrated Control Thyristor (IGCT) or the latest generation of IGBTs. MMC converters have been the subject of extensive research and development work on topologies, modeling, and calculation of steady-state and transient operation, loss calculation, the harmonic content of electrical quantities and systems control and regulation functions. On the other hand, the dimensioning methodology of these structures is rarely addressed in the published works. Like most static converter topologies, MMC converters are composed not only of switches but also passive components of energy storage devices (capacitors) and magnetic (inductors, couplers) that are essential to ensure the conversion of the input and output electrical quantities. These components have a strong influence on the size, the volume and the efficiency of the converters and the optimal dimensioning of the latter often result from a compromise between the size of the passive components, the frequency and the power switchable by the elementary switches. The research presented in this thesis concerns the development of an optimal and comprehensive design methodology for MMCs integrating active and passive components, respecting the constraints of the application specifications and maximizing certain performance objectives. This methodology is used to analyze the various trade-off between the overall efficiency of the converter and its mass, or even its volume. These various scenarios can also be translated into cost if the user has the price of the available components. Various competing solutions using a specific number of cells adapted to switches with different characteristics in terms of voltage, current, and associated losses can thus be compared on the basis of identical input-output specifications. The methodology is applied to the dimensioning of an MMC converter used as an active front-end (AFE) input of a high-power pulsed solenoid power supply. In the first part, a fast, precise and generic method for calculating the steady-state model of MMC converter is developed. It has the particularity of taking into account the switching frequency as opposed to conventional approaches using modeling in mean values. This tool is very useful in evaluating the harmonic content that is constrained by the specifications, it is the heart of the design environment of the converter. Unlike conventional converters, there are circulation currents in MMC converter structure that make it complex to analyze. The inductors which are used in the arms of the topology are generally bulky and expensive in terms of volume and mass. It is common to use coupled inductors to reduce ripple, THD, and mass. In the presented work, an equivalent circuit of coupled inductances considering the saturation effect is developed and integrated. The use of coupled inductors increases the complexity of the analysis and the precision of its sizing method is critical for the overall optimization of the converter. An analytical model for the dimensioning of these components has been developed and integrated as well as a higher complexity model which uses the finite element method calculation. The proposed optimal and global design methodology uses a nonlinear optimization procedure with constraints that drive the steady-state computing tool, multi-level design models of passive component complexity, and other modules to quantify the fault state. To compensate the low precision of the analytical models, a hybrid optimization approach is also implemented. In the hybrid optimization loop, the inductance-sizing model can be corrected by the higher complexity model that uses finite element computation. A better compromise is thus obtained between the precision of the optimal results and convergence time of the iterative global optimization method.

Modeling of Modular Multilevel Converters for Stability Analysis

Modeling of Modular Multilevel Converters for Stability Analysis
  • Author : Luca Bessegato
  • Publisher :Unknown
  • Release Date :2019
  • Total pages :229
  • ISBN : 9178731445
GET BOOK HERE

Summary :

Advanced Multilevel Converters and Applications in Grid Integration

Advanced Multilevel Converters and Applications in Grid Integration
  • Author : Ali Iftekhar Maswood,Hossein Dehghani Tafti
  • Publisher :Unknown
  • Release Date :2019-01-04
  • Total pages :496
  • ISBN : 9781119475866
GET BOOK HERE

Summary : 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.

High Voltage Direct Current Transmission

High Voltage Direct Current Transmission
  • Author : Dragan Jovcic
  • Publisher :Unknown
  • Release Date :2019-07-01
  • Total pages :560
  • ISBN : 9781119566618
GET BOOK HERE

Summary : Presents the latest developments in switchgear and DC/DC converters for DC grids, and includes substantially expanded material on MMC HVDC This newly updated edition covers all HVDC transmission technologies including Line Commutated Converter (LCC) HVDC; Voltage Source Converter (VSC) HVDC, and the latest VSC HVDC based on Modular Multilevel Converters (MMC), as well as the principles of building DC transmission grids. Featuring new material throughout, High Voltage Direct Current Transmission: Converters, Systems and DC Grids, 2nd Edition offers several new chapters/sections including one on the newest MMC converters. It also provides extended coverage of switchgear, DC grid protection and DC/DC converters following the latest developments on the market and in research projects. All three HVDC technologies are studied in a wide range of topics, including: the basic converter operating principles; calculation of losses; system modelling, including dynamic modelling; system control; HVDC protection, including AC and DC fault studies; and integration with AC systems and fundamental frequency analysis. The text includes: A chapter dedicated to hybrid and mechanical DC circuit breakers Half bridge and full bridge MMC: modelling, control, start-up and fault management A chapter dedicated to unbalanced operation and control of MMC HVDC The advancement of protection methods for DC grids Wideband and high-order modeling of DC cables Novel treatment of topics not found in similar books, including SimPowerSystems models and examples for all HVDC topologies hosted by the 1st edition companion site. High Voltage Direct Current Transmission: Converters, Systems and DC Grids, 2nd Edition serves as an ideal textbook for a graduate-level course or a professional development course.

Modular Multilevel Converters (MMCs) for Grid-Connected Energy Storage Systems Based on Split Batteries (sBESS)

Modular Multilevel Converters (MMCs) for Grid-Connected Energy Storage Systems Based on Split Batteries (sBESS)
  • Author : André Hillers
  • Publisher :Unknown
  • Release Date :2018
  • Total pages :229
  • ISBN : OCLC:1061854642
GET BOOK HERE

Summary :

Power Electronics in Renewable Energy Systems and Smart Grid

Power Electronics in Renewable Energy Systems and Smart Grid
  • Author : Bimal K. Bose
  • Publisher :Unknown
  • Release Date :2019-06-27
  • Total pages :752
  • ISBN : 9781119515654
GET BOOK HERE

Summary : The comprehensive and authoritative guide to power electronics in renewable energy systems Power electronics plays a significant role in modern industrial automation and high- efficiency energy systems. With contributions from an international group of noted experts, Power Electronics in Renewable Energy Systems and Smart Grid: Technology and Applications offers a comprehensive review of the technology and applications of power electronics in renewable energy systems and smart grids. The authors cover information on a variety of energy systems including wind, solar, ocean, and geothermal energy systems as well as fuel cell systems and bulk energy storage systems. They also examine smart grid elements, modeling, simulation, control, and AI applications. The book's twelve chapters offer an application-oriented and tutorial viewpoint and also contain technology status review. In addition, the book contains illustrative examples of applications and discussions of future perspectives. This important resource: Includes descriptions of power semiconductor devices, two level and multilevel converters, HVDC systems, FACTS, and more Offers discussions on various energy systems such as wind, solar, ocean, and geothermal energy systems, and also fuel cell systems and bulk energy storage systems Explores smart grid elements, modeling, simulation, control, and AI applications Contains state-of-the-art technologies and future perspectives Provides the expertise of international authorities in the field Written for graduate students, professors in power electronics, and industry engineers, Power Electronics in Renewable Energy Systems and Smart Grid: Technology and Applications offers an up-to-date guide to technology and applications of a wide-range of power electronics in energy systems and smart grids.

Software Based Discharging for Modular Multilevel Converters

Software Based Discharging for Modular Multilevel Converters
  • Author : Anonim
  • Publisher :Unknown
  • Release Date :2020
  • Total pages :229
  • ISBN : OCLC:1199760577
GET BOOK HERE

Summary :

Control and Dynamics of Modular Multilevel Converters

Control and Dynamics of Modular Multilevel Converters
  • Author : Ajit Singh Narwal
  • Publisher :Unknown
  • Release Date :2014
  • Total pages :117
  • ISBN : OCLC:887839602
GET BOOK HERE

Summary :

HVDC Grids

HVDC Grids
  • Author : Dirk Van Hertem,Oriol Gomis-Bellmunt,Jun Liang
  • Publisher :Unknown
  • Release Date :2016-02-23
  • Total pages :528
  • ISBN : 9781119115236
GET BOOK HERE

Summary : This book discusses HVDC grids based on multi-terminal voltage-source converters (VSC), which is suitable for the connection of offshore wind farms and a possible solution for a continent wide overlay grid. HVDC Grids: For Offshore and Supergrid of the Future begins by introducing and analyzing the motivations and energy policy drives for developing offshore grids and the European Supergrid. HVDC transmission technology and offshore equipment are described in the second part of the book. The third part of the book discusses how HVDC grids can be developed and integrated in the existing power system. The fourth part of the book focuses on HVDC grid integration, in studies, for different time domains of electric power systems. The book concludes by discussing developments of advanced control methods and control devices for enabling DC grids. Presents the technology of the future offshore and HVDC grid Explains how offshore and HVDC grids can be integrated in the existing power system Provides the required models to analyse the different time domains of power system studies: from steady-state to electromagnetic transients This book is intended for power system engineers and academics with an interest in HVDC or power systems, and policy makers. The book also provides a solid background for researchers working with VSC-HVDC technologies, power electronic devices, offshore wind farm integration, and DC grid protection.

Design, Analysis and Operation of Hybrid Modular Multilevel Converters for HVDC Applications

Design, Analysis and Operation of Hybrid Modular Multilevel Converters for HVDC Applications
  • Author : Zeng Rong
  • Publisher :Unknown
  • Release Date :2015
  • Total pages :376
  • ISBN : OCLC:966702494
GET BOOK HERE

Summary : This thesis investigates the design, analysis, and operation of modular multilevel converters (MMC) for HVDC applications. Based on the operation principles of the MMC, the operation of MMC under asymmetrical arm impedance conditions is analysed using three equivalent sub-circuits at different freqeuncy. Detail analysis of the impact of asymmetrical conditions on the differential-mode current, the common-mode current and sub-module (SM) capacitor voltages, is performed. Based on the analysis, the corresponding control targets and an improved control strategy are designed to improve the operation performance. Considering the advantages of half-bridge based SM (HBSM) and full-bridge based SM (FBSM), a hybrid MMC (H-MMC) configuration consisting of FBSMs and HBSMs is proposed. By adopting the negative voltage state for some of the FBSMs, the output voltage range is extended to increase converter power transmission capability. By considering the relationships between the AC and DC voltages, AC, DC and arm currents, the ratio of the numbers of the FBSM to HBSM is analysed in order to maintain capacitor voltage balance and retain DC fault blocking capability. An equivalent circuit for the H-MMC is proposed, which considers each arm to be consisted of two individual voltage sources. This model is used to analyse SM capacitor voltage balancing and ripple. A two-stage selection and sorting algorithm is developed to ensure capacitor voltage balancing among the SMs. The proposed H-MMC is compared to other topologies in terms of power device utilization and power losses, and it shows that the H-MMC has higher device utilization and lower power loss than the conventional FBSM based MMC; Furthermore, The DC fault ride-through capability of the H-MMC are discussed. It is found that the H-MMC can not only isolate the DC fault, but also coniture operating at a wide DC voltage range from zero to rated value. Such two features of the H-MMC show the advantages in the hybrid configurations over the conventional FBSM and HBSM systems. Finally, two applications based on the proposed H-MMC are presented; one is a high power DC/DC converter with fault blocking capability for interconnecting large HVDC systems, and the other is a hybrid HVDC transmission system comprising a wind farm side VSC based on the H-MMC and a grid side LCC for transmitting wind power to AC grid.