High Frequency High Boost Ratio Dc-dc Converters with Wide Bandgap Devices for PV System Applications PDF Download
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Author: Cong Li Publisher: ISBN: Category : Languages : en Pages : 164
Book Description
Chapter 4 focuses on solving common problems of high boost ratio resonant converters, such as large power requirements on the passive components, and high circulating current at light load conditions. Adaptive inductor is discussed as a possible way to decrease the system size and increase system efficiency. Chapter 5 proposes a family of switched capacitor-inductor (C-L) circuits which is largely based on parallel charging serial discharging technique. A comparison of the two solutions proposed in Chapter 4 and 5 shows that the solution in Chapter 5 is more feasible with available materials and existing technologies. Therefore, a 1.2 kW lab prototype, with an input voltage ranges between 20 V and 40 V and a constant output voltage at 1000 V was built and tested. During the tests, the switching frequency was set at 187.5 kHz. Experimental results have validated the proposed circuit topology and demonstrated a 96.1% peak efficiency and an overall efficiency over 94.5%.
Author: Cong Li Publisher: ISBN: Category : Languages : en Pages : 164
Book Description
Chapter 4 focuses on solving common problems of high boost ratio resonant converters, such as large power requirements on the passive components, and high circulating current at light load conditions. Adaptive inductor is discussed as a possible way to decrease the system size and increase system efficiency. Chapter 5 proposes a family of switched capacitor-inductor (C-L) circuits which is largely based on parallel charging serial discharging technique. A comparison of the two solutions proposed in Chapter 4 and 5 shows that the solution in Chapter 5 is more feasible with available materials and existing technologies. Therefore, a 1.2 kW lab prototype, with an input voltage ranges between 20 V and 40 V and a constant output voltage at 1000 V was built and tested. During the tests, the switching frequency was set at 187.5 kHz. Experimental results have validated the proposed circuit topology and demonstrated a 96.1% peak efficiency and an overall efficiency over 94.5%.
Author: Deshang Sha Publisher: Springer ISBN: 9811302596 Category : Technology & Engineering Languages : en Pages : 326
Book Description
Written by experts, this book is based on recent research findings in high-frequency isolated bidirectional DC-DC converters with wide voltage range. It presents advanced power control methods and new isolated bidirectional DC-DC topologies to improve the performance of isolated bidirectional converters. Providing valuable insights, advanced methods and practical design guides on the DC-DC conversion that can be considered in applications such as microgrid, bidirectional EV chargers, and solid state transformers, it is a valuable resource for researchers, scientists, and engineers in the field of isolated bidirectional DC-DC converters.
Author: Frede Blaabjerg Publisher: CRC Press ISBN: 1000378861 Category : Technology & Engineering Languages : en Pages : 205
Book Description
Photovoltaic (PV) energy generation is an excellent example of large-scale electric power generation through various parallel arrangements of small voltage-generating solar cells or modules. However, PV generation systems require power electronic converters system to satisfy the need for real-time applications or to balance the demand for power from electric. Therefore, a DC-DC power converter is a vital constituent in the intermediate conversion stage of PV power. This book presents a comprehensive review of various non-isolated DC-DC power converters. Non-isolated DC-DC converters for renewable energy system (RES) application presented in this book 1st edition through a detailed original investigation, obtained numerical/experimental results, and guided the scope to design new families of converters: DC-DC multistage power converter topologies, Multistage "X-Y converter family", Nx IMBC (Nx Interleaved Multilevel Boost Converter), Cockcroft Walton (CW) Voltage Multiplier-Based Multistage/Multilevel Power Converter (CW-VM-MPC) converter topologies, and Z-source and quasi Z-source. Above solutions are discussed to show how they can achieve the maximum voltage conversion gain ratio by adapting the passive/active component within the circuits. For assessment, we have recommended novel power converters through their functionality and designs, tested and verified by numerical software. Further, the hardware prototype implementation is carried out through a flexible digital processor. Both numerical and experimental results always shown as expected close agreement with primary theoretical hypotheses. This book offers guidelines and recommendation for future development with the DC-DC converters for RES applications based on cost-effective, and reliable solutions.
Author: Salvatore Musumeci Publisher: MDPI ISBN: 303650446X Category : Technology & Engineering Languages : en Pages : 188
Book Description
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.
Author: Bimal K. Bose Publisher: John Wiley & Sons ISBN: 1119515653 Category : Technology & Engineering Languages : en Pages : 705
Book Description
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.
Author: Dianguo Xu Publisher: Springer Nature ISBN: 9811574243 Category : Technology & Engineering Languages : en Pages : 129
Book Description
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.
Author: Weimin Zhang Publisher: ISBN: Category : DC-to-DC converters Languages : en Pages : 192
Book Description
The ever increasing demands in the energy conversion market propel power converters towards high efficiency and high power density. With fast development of data processing capability in the data center, the server will include more processors, memories, chipsets and hard drives than ever, which requires more efficient and compact power converters. Meanwhile, the energy-efficient and power-dense converters for the electric vehicle also result in longer driving range as well as more passengers and cargo capacities. DC-DC converters are indispensable power stages for both applications. In order to address the efficiency and density requirements of the DC-DC converters in these applications, several related research topics are discussed in this dissertation. For the DC-DC converter in the data center application, a LLC resonant converter based on the newly emerged GaN devices is developed to improve the efficiency over the traditional Si-based converter. The relationship between the critical device parameters and converter loss is established. A new perspective of extra winding loss due to the asymmetrical primary and secondary side current in LLC resonant converter is proposed. The extra winding loss is related to the critical device parameters as well. The GaN device benefits on device loss and transformer winding loss is analyzed. An improved LLC resonant converter design method considering the device loss and transformer winding loss is proposed. For the DC-DC converter in the electric vehicle application, an integrated DC-DC converter that combines the on-board charger DC-DC converter and drivetrain DC-DC converter is developed . The integrated DC-DC converter is considered to operate in different modes. The existing dual active bridge (DAB) DC-DC converter originally designed for the charger is proposed to operate in the drivetrain mode to improve the efficiency at the light load and high voltage step-up ratio conditions of the traditional drivetrain DC-DC converter. Design method and loss model are proposed for the integrated converter in the drivetrain mode. A scaled-down integrated DC-DC converter prototype is developed to verify the design and loss model.
Author: Prabhakar V. Varde Publisher: Springer Nature ISBN: 9811390088 Category : Technology & Engineering Languages : en Pages : 1015
Book Description
This volume presents selected papers from the International Conference on Reliability, Safety, and Hazard. It presents the latest developments in reliability engineering and probabilistic safety assessment, and brings together contributions from a diverse international community and covers all aspects of safety, reliability, and hazard assessment across a host of interdisciplinary applications. This book will be of interest to researchers in both academia and the industry.
Author: Marian K. Kazimierczuk Publisher: John Wiley & Sons ISBN: 1119009561 Category : Technology & Engineering Languages : en Pages : 960
Book Description
PWM DC-DC power converter technology underpins many energy conversion systems including renewable energy circuits, active power factor correctors, battery chargers, portable devices and LED drivers. Following the success of Pulse-Width Modulated DC-DC Power Converters this second edition has been thoroughly revised and expanded to cover the latest challenges and advances in the field. Key features of 2nd edition: Four new chapters, detailing the latest advances in power conversion, focus on: small-signal model and dynamic characteristics of the buck converter in continuous conduction mode; voltage-mode control of buck converter; small-signal model and characteristics of the boost converter in the discontinuous conduction mode and electromagnetic compatibility EMC. Provides readers with a solid understanding of the principles of operation, synthesis, analysis and design of PWM power converters and semiconductor power devices, including wide band-gap power devices (SiC and GaN). Fully revised Solutions for all end-of-chapter problems available to instructors via the book companion website. Step-by-step derivation of closed-form design equations with illustrations. Fully revised figures based on real data. With improved end-of-chapter summaries of key concepts, review questions, problems and answers, biographies and case studies, this is an essential textbook for graduate and senior undergraduate students in electrical engineering. Its superior readability and clarity of explanations also makes it a key reference for practicing engineers and research scientists.
Author: Cong Li
Author: Cong Li
Author: Deshang Sha
Author: Yun Zhang
Author: Frede Blaabjerg
Author: Salvatore Musumeci
Author: Bimal K. Bose
Author: Dianguo Xu
Author: Weimin Zhang
Author: Prabhakar V. Varde
Author: Marian K. Kazimierczuk