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DC Distribution Systems and Microgrids

DC Distribution Systems and Microgrids
Author: Tomislav Dragičević
Publisher: Energy Engineering
Total Pages: 470
Release: 2018-10
Genre: Technology & Engineering
ISBN: 1785613820

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This book provides an overview of recent research activities in the control, protection and architectural design of a number of different types of DC distribution systems and microgrids. Practical requirements and implementation details of several types of DC distribution systems used in real world industrial applications are also given.


DC Microgrids

DC Microgrids
Author: Nikita Gupta
Publisher: John Wiley & Sons
Total Pages: 484
Release: 2022-05-26
Genre: Science
ISBN: 1119777593

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DC MICROGRIDS Written and edited by a team of well-known and respected experts in the field, this new volume on DC microgrids presents the state-of-the-art developments and challenges in the field of microgrids for sustainability and scalability for engineers, researchers, academicians, industry professionals, consultants, and designers. The electric grid is on the threshold of a paradigm shift. In the past few years, the picture of the grid has changed dramatically due to the introduction of renewable energy sources, advancements in power electronics, digitalization, and other factors. All these megatrends are pointing toward a new electrical system based on Direct Current (DC). DC power systems have inherent advantages of no harmonics, no reactive power, high efficiency, over the conventional AC power systems. Hence, DC power systems have become an emerging and promising alternative in various emerging applications, which include distributed energy sources like wind, solar and Energy Storage System (ESS), distribution networks, smart buildings, remote telecom systems, and transport electrification like electric vehicles (EVs). All these applications are designed at different voltages to meet their specific requirements individually because of the lack of standardization. Thus, the factors influencing the DC voltages and system operation needed to be surveyed and analyzed, which include voltage standards, architecture for existing and emerging applications, topologies and control strategies of power electronic interfaces, fault diagnosis and design of the protection system, optimal economical operation, and system reliability.


Microgrids and Active Distribution Networks

Microgrids and Active Distribution Networks
Author: Sunetra Chowdhury
Publisher: IET
Total Pages: 321
Release: 2009-06-24
Genre: Technology & Engineering
ISBN: 1849190143

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Microgrids and Active Distribution Networks offer a potential solution for sustainable, energy-efficient power supply to cater for increasing load growth, supplying power to remote areas, generation of clean power and reduction in emission of greenhouse gases & particulates as per Kyoto protocol.


Mitigation of Negative Impedance Instabilities in DC Distribution Systems

Mitigation of Negative Impedance Instabilities in DC Distribution Systems
Author: Deepak Kumar Fulwani
Publisher: Springer
Total Pages: 116
Release: 2016-10-01
Genre: Technology & Engineering
ISBN: 981102071X

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This book focuses on the mitigation of the destabilizing effects introduced by constant power loads (CPLs) in various non-isolated DC/DC converters and island DC microgrids using a robust non-linear sliding mode control (SMC) approach. This book validates theoretical concepts using real-time simulation studies and hardware implementations. Novel sliding mode controllers are proposed to mitigate negative impedance instabilities in DC/DC boost, buck, buck-boost, bidirectional buck-boost converters, and islanded DC microgrids. In each case, the condition for the large-signal stability of the converter feeding a CPL is established. An SMC-based nonlinear control scheme for an islanded DC microgrid feeding CPL dominated load is proposed so as to mitigate the destabilizing effect of CPL and to ensure system stability under various operating conditions. A limit on CPL power is also established to ensure system stability. For all proposed solutions, simulation studies and hardware implementations are provided to validate the effectiveness of the proposed sliding mode controllers.


Integrated Distribution Systems with AC/DC/Hybrid Microgrids

Integrated Distribution Systems with AC/DC/Hybrid Microgrids
Author: Xiaonan Lu
Publisher: Wiley-IEEE Press
Total Pages: 0
Release: 2023-07-05
Genre: Science
ISBN: 9781119390824

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This book presents foundational technologies and background knowledge in the field of AC/DC/hybrid microgrids. It then goes on to describe technical advances and emerging technologies. The authors focus on planning, control and operation of integrated distribution systems with AC/DC/hybrid microgrids. Here, the integrated distribution system refers to the modern distribution system with distributed energy resource (DER) and microgrid integration. Rather than solely relying on AC or DC subsystems, the book covers both AC, DC and hybrid microgrids in integrated distribution systems in order to introduce a comprehensive solution.


DC & Hybrid Micro-Grids

DC & Hybrid Micro-Grids
Author: Lucian Mihet-Popa
Publisher:
Total Pages: 154
Release: 2021
Genre:
ISBN: 9783036519746

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This book is a printed version of the papers published in the Special Issue “DC & Hybrid Microgrids” of Applied Sciences. This Special Issue, co-organized by the University of Pisa, Italy and Østfold University College in Norway, has collected nine papers and the editorial, from 28 submitted, with authors from Asia, North America and Europe. The published articles provide an overview of the most recent research advances in direct current (DC) and hybrid microgrids, exploiting the opportunities offered by the use of renewable energy sources, battery energy storage systems, power converters, innovative control and energy management strategies.


Integration of AC/DC Microgrids into Power Grids

Integration of AC/DC Microgrids into Power Grids
Author: Fazel Mohammadi
Publisher: MDPI
Total Pages: 154
Release: 2020-12-02
Genre: Technology & Engineering
ISBN: 3039361805

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AC/DC Microgrids are a small part of low voltage distribution networks that are located far from power substations, and are interconnected through the point of common coupling to power grids. These systems are important keys for the flexible, techno-economic, and environmental-friendly generation of units for the reliable operation and cost-effective planning of smart electricity grids. Although AC/DC microgrids, with the integration of renewable energy resources and other energy systems, such as power-to-gas, combined heat and power, combined cooling heat and power, power-to-heat, power-to-vehicle, pump and compressed air storage, have several advantages, there are some technical aspects that must be addressed. This Special Issue aims to study the configuration, impacts, and prospects of AC/DC microgrids that enable enhanced solutions for intelligent and optimized electricity systems, energy storage systems, and demand-side management in power grids with an increasing share of distributed energy resources. It includes AC/DC microgrid modeling, simulation, control, operation, protection, dynamics, planning, reliability and security, as well as considering power quality improvement, load forecasting, market operations, energy conversion, cyber/physical security, supervisory and monitoring, diagnostics and prognostics systems.


Urban DC Microgrid

Urban DC Microgrid
Author: Manuela Sechilariu
Publisher: Butterworth-Heinemann
Total Pages: 306
Release: 2016-05-10
Genre: Technology & Engineering
ISBN: 0128037873

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Urban DC Microgrid: Intelligent Control and Power Flow Optimization focuses on microgrids for urban areas, particularly associated with building-integrated photovoltaic and renewable sources. This book describes the most important problems of DC microgrid application, with grid-connected and off-grid operating modes, aiming to supply DC building distribution networks. The book considers direct current (DC) microgrid to supply DC building distribution networks for positive energy buildings; dynamic interactions with the utility grid based on communication with the smart grid; supervisory control systems; and energy management. The global power system is exposed and the DC microgrid system is presented and analyzed with results and discussion, highlighting both the advantages and limitations of the concept. Coverage at the system level of microgrid control as well as the various technical aspects of the power system components make this a book interesting to academic researchers, industrial energy researchers, electrical power and power system professionals. Provides a strong overview of microgrid modelling Describes the most important problems of DC microgrid application, with grid-connected and off-grid operating modes, aiming to supply DC building distribution networks Offers experimental problem examples and results Includes supervisory control and energy management


Modeling, Operation, and Analysis of DC Grids

Modeling, Operation, and Analysis of DC Grids
Author: Alejandro Garces
Publisher: Academic Press
Total Pages: 388
Release: 2021-07-01
Genre: Science
ISBN: 012822102X

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Modeling, Operation, and Analysis of DC Grids presents a unified vision of direct current grids with their core analysis techniques, uniting power electronics, power systems, and multiple scales of applications. Part one presents high power applications such as HVDC transmission for wind energy, faults and protections in HVDC lines, stability analysis and inertia emulation. The second part addresses current applications in low voltage such as microgrids, power trains and aircraft applications. All chapters are self-contained with numerical and experimental analysis. Provides a unified, coherent presentation of DC grid analysis based on modern research in power systems, power electronics, microgrids and MT-HVDC transmission Covers multiple scales of applications in one location, addressing DC grids in electric vehicles, microgrids, DC distribution, multi-terminal HVDC transmission and supergrids Supported by a unified set of MATLAB and Simulink test systems designed for application scenarios


Introduction to DC Microgrids

Introduction to DC Microgrids
Author: Vivek Agarwal
Publisher: Wiley-IEEE Press
Total Pages: 0
Release: 2023-11-29
Genre: Science
ISBN: 9781119570509

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Discover the art and science of designing, building, and installing DC microgrid systems with this authoritative resource Introduction to DC Microgrids delivers a comprehensive and concise introduction to the fundamentals of DC microgrid technology. Beginning with the basic concepts of DC systems and their various constituents, the book moves on to a variety of DC architectures and voltage levels of DC microgrid systems. Typical examples, use cases, and applications round out the material to form a practical and accessible resource ideal for students, professionals, and enthusiasts. Accomplished engineers and authors, Vivek Agarwal and Prajof Prabhakaran, offer readers solved numerical examples in every chapter to shore up the theoretical concepts presented. They also discuss different types of power converters used in several roles in DC microgrid systems and common issues faced by those who install and use them. Introduction to DC Microgrids makes a compelling case for the merits of using DC microgrids over AC solutions and includes usable techniques to determine optimal placement of loads and sources. You’ll also learn from: A complete introduction to DC microgrid systems with discussions of a variety of reported architectures and voltage levels A fulsome description of power electronic converters in DC microgrid systems with simulation and experimental results of several different converters An explanation of DC microgrid control methods, including novel control techniques to minimize voltage regulation and improve load sharing accuracy A treatment of power quality and protection of DC microgrids, including a discussion of how to mitigate voltage fluctuation and harmonic issues Perfect for doctoral, graduate, and senior undergraduate students in electrical engineering and related programs, Introduction to DC Microgrids also has a place on the bookshelves of diploma students, technicians who install and implement microgrid systems in the field, and industrial professionals interested in electrical sustainability projects.