Multi Mhz High Frequency Resonant Dc Dc Power Converter
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Multi Mhz High Frequency Resonant Dc Dc Power Converter
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Author : Dianguo Xu
language : en
Publisher: Springer Nature
Release Date : 2020-08-08
Multi Mhz High Frequency Resonant Dc Dc Power Converter written by Dianguo Xu and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-08-08 with Technology & Engineering categories.
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.
Design Considerations For Radio Frequency Power Converters
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Author : Lei Gu (Researcher in power electronics)
language : en
Publisher:
Release Date : 2019
Design Considerations For Radio Frequency Power Converters written by Lei Gu (Researcher in power electronics) and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019 with categories.
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.
Integrated High Vin Multi Mhz Converters
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Author : Jürgen Wittmann
language : en
Publisher: Springer Nature
Release Date : 2019-09-03
Integrated High Vin Multi Mhz Converters written by Jürgen Wittmann and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-09-03 with Technology & Engineering categories.
This book provides readers with guidelines for designing integrated multi-MHz-switching converters for input voltages/system supplies up to 50V or higher. Coverage includes converter theory, converter architectures, circuit design, efficiency, sizing of passives, technology aspects, etc. The author discusses new circuit designs, new architectures and new switching concepts, including dead-time control and soft-switching techniques that overcome current limitations of these converters. The discussion includes technology related issues and helps readers to choose the right technology for fast-switching converters. This book discusses benefits and drawbacks in terms of integration, size and cost, efficiency and complexity, and enables readers to make trade-offs in design, given different converter parameters. Describes a study for increasing switching frequencies up to 30 MHz at input voltages up to 50V or higher in the scaling of the size of switching converter passives; Analyzes various buck converter implementations and shows that a preference due to higher efficiency depends on the operating point, on the available switch technologies, and on the implementation of the high-side supply generation; Describes an efficiency model based on a four-phase model, which enables separation of loss causes and loss locations.
High Power High Frequency Dc To Dc Converters
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Author : Mustansir Hussainy Kheraluwala
language : en
Publisher:
Release Date : 1991
High Power High Frequency Dc To Dc Converters written by Mustansir Hussainy Kheraluwala and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1991 with categories.
Integrated Hybrid Resonant Dcdc Converters
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Author : Peter Renz
language : en
Publisher: Springer Nature
Release Date : 2020-12-29
Integrated Hybrid Resonant Dcdc Converters written by Peter Renz and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-12-29 with Technology & Engineering categories.
This book provides a comprehensive, single-source on resonant switched-capacitor converters. It is written in the style of a handbook, with systematic guidelines, and includes implementation examples. The authors explore integrated hybrid resonant DCDC converters in order to achieve highly compact, energy efficient and cost-effective power management solutions in the growing fields of wearables and internet-of-things applications. They provide an introduction into hybrid converters as a new and promising converter class, which merges capacitive and inductive conversion concepts into one. Coverage ranges from fundamentals to implementation details, including topics such as power stage design, gate drive schemes, different control mechanisms for resonant operation and integrated passives. Introduces a new, multi-ratio resonant converter architecture, which enables lower switching frequencies and better passive component utilization; Discusses circuit block design for high efficiency of the power stage; Explores implementation details and concepts for integrated passives; Derives models, implements and compares to each other different control mechanisms.
Power Converters Drives And Controls For Sustainable Operations
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Author : S. Ganesh Kumar
language : en
Publisher: John Wiley & Sons
Release Date : 2023-06-23
Power Converters Drives And Controls For Sustainable Operations written by S. Ganesh Kumar and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2023-06-23 with Science categories.
POWER CONVERTERS, DRIVES AND CONTROLS FOR SUSTAINABLE OPERATIONS Written and edited by a group of experts in the field, this groundbreaking reference work sets the standard for engineers, students, and professionals working with power converters, drives, and controls, offering the scientific community a way towards combating sustainable operations. The future of energy and power generation is complex. Demand is increasing, and the demand for cleaner energy and electric vehicles (EVs) is increasing with it. With this increase in demand comes an increase in the demand for power converters. Part one of this book is on switched-mode converters and deals with the need for power converters, their topologies, principles of operation, their steady-state performance, and applications. Conventional topologies like buck, boost, buck-boost converters, inverters, multilevel inverters, and derived topologies are covered in part one with their applications in fuel cells, photovoltaics (PVs), and EVs. Part two is concerned with electrical machines and converters used for EV applications. Standards for EV, charging infrastructure, and wireless charging methodologies are addressed. The last part deals with the dynamic model of the switched-mode converters. In any DC-DC converter, it is imperative to control the output voltage as desired. Such a control may be achieved in a variety of ways. While several types of control strategies are being evolved, the popular method of control is through the duty cycle of the switch at a constant switching frequency. This part of the book briefly reviews the conventional control theory and builds on the same to develop advanced techniques in the closed-loop control of switch mode power converters (SMPC), such as sliding mode control, passivity-based control, model predictive control (MPC), fuzzy logic control (FLC), and backstepping control. A standard reference work for veteran engineers, scientists, and technicians, this outstanding new volume is also a valuable introduction to new hires and students. Useful to academics, researchers, engineers, students, technicians, and other industry professionals, it is a must-have for any library.
Modern Power Electronics
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Author : PC Sen
language : en
Publisher: S. Chand Publishing
Release Date : 2005
Modern Power Electronics written by PC Sen and has been published by S. Chand Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005 with Technology & Engineering categories.
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.
Topology Analysis And Control Of A Resonant Dc Link Power Converter
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Author : Giri Venkataramanan
language : en
Publisher:
Release Date : 1992
Topology Analysis And Control Of A Resonant Dc Link Power Converter written by Giri Venkataramanan and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1992 with categories.
Design Of A Very High Frequency Resonant Boost Dc Dc Converter
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Author : Justin Michael Burkhart
language : en
Publisher:
Release Date : 2010
Design Of A Very High Frequency Resonant Boost Dc Dc Converter written by Justin Michael Burkhart and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010 with categories.
THIS thesis explores the development of a very high frequency DC-DC resonant boost converter. The topology examined features low parts count and fast transient response but suffers from higher device stresses compared to other topologies that use a larger number of passive components. A new design methodology for the proposed converter topology is developed. This design procedure - unlike previous design methodologies for similar topologies - is based on direct analysis of the topology and does not rely on lengthy time-domain simulation sweeps across circuit parameters to identify good designs. Additionally, a method to design semiconductor devices that are suitable for use in the proposed VHF power converter is presented. When the main semiconductor switch is fabricated in a integrated power process where the designer has control over the device layout, large performance gains can be achieved by considering parasitics and loss mechanisms that are important to operation at VHF when designing the device. A method to find the optimal device for a particular converter design is presented. The new design methodology is combined with the device optimization technique to enable the designer to rapidly find the optimal combination of converter and device design for a given specification. To validate the proposed converter topology, design methodology, and device optimization, a 75 MHz prototype converter is designed and experimentally demonstrated. The performance of the prototype closely matches that predicted by the design procedure, and achieves good efficiency over a wide input voltage range.
Holistic Design Of Resonant Dc Transformer On Constant Voltage Conversion Cascaded Stability And High Efficiency
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Author : Xin Zhang
language : en
Publisher: Springer Nature
Release Date : 2023-03-06
Holistic Design Of Resonant Dc Transformer On Constant Voltage Conversion Cascaded Stability And High Efficiency written by Xin Zhang and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2023-03-06 with Technology & Engineering categories.
This book is devoted to the optimum design of the DCT in a hybrid AC/DC microgrid, which takes into account not only the influence of different inductors/capacitors values, but also numerous design goals (i.e., VCG, efficiency, stability and so on). This book examines the DCT's design problem in detail. It begins by reviewing existing DCTs in, the hybrid AC/DC microgrid and their design problems. Following that, this book proposes a family of DCT optimization design approaches to ensure that the designed DCT has good power transmission and voltage regulation ability in the hybrid AC/DC microgrid, even when the actual inductors/capacitors values fluctuate with practical power and temperature. Following that, this book provides a family of multi-objective optimization design methodologies for the DCT to guarantee that it concurrently achieves the requirements of VCG, efficiency, and system stability. This book also covers how to control the DCT in a hybrid AC/DC microgrid optimally and generically.