Download or read book High Voltage Point of Load Converter for Data Center Power Supplies written by Yutian Cuie and published by . This book was released on 2016 with total page 173 pages. Available in PDF, EPUB and Kindle. Book excerpt: With the increased cloud computing and digital information storage, the energy requirement of data centers where a large number of computer systems are housed keeps increasing. However, most of the data centers today are operated inefficiently, both economically and environmentally. Efforts including improving power delivery architecture, power conversion efficiency and thermal management have been made to increase the power delivery efficiency from grid to point of load. In this dissertation, a new power delivery architecture, high voltage point of load (HV POL) architecture, has been proposed in order to improve power conversion and distribution efficiency for data center power supplies. First, the conversion structure has been selected as input series and output parallel (ISOP) to fulfill the high ratio (400:1) conversion and mitigate the step down stress of a single converter. Also, with multiple output phases, interleaving control technique can be applied to increase equivalent switching frequency and allows smaller output inductor. Then, two different types of converter topologies have been chosen for evaluation in the ISOP structure: phase shift full bridge (PSFB) and half bridge current doubler. High efficiency driven converter design and control method have been performed on both topologies. In PSFB, the impact of primary side MOSFETs' output junction capacitances on the converter's efficiency has been studied. For half bridge current doubler, a novel control method enabling soft switching over the entire load range with auxiliary circuit is proposed and verified in experiments. A six phase ISOP connected half bridge current doubler converter was built and tested to realize the single stage 400 V to 1 V conversion. Adaptive voltage positioning (AVP) control is analyzed and performed on the ISOP system to meet the on-board power supply requirement. Also, the impact of mismatches in the ISOP connected modules are calculated and simulated for both static and dynamic performance, and it is shown that the ISOP system is relatively immune to circuit's mismatches. Therefore, the concept of using the single stage ISOP connected converter has been shown to be feasible as a high efficiency on-board power supply with good transient performance.
Download or read book Integrated High Vin Multi MHz Converters written by Jürgen Wittmann and published by Springer Nature. This book was released on 2019-09-03 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Design of Power Management Integrated Circuits written by Bernhard Wicht and published by John Wiley & Sons. This book was released on 2024-05-14 with total page 484 pages. Available in PDF, EPUB and Kindle. Book excerpt: Design of Power Management Integrated Circuits Comprehensive resource on power management ICs affording new levels of functionality and applications with cost reduction in various fields Design of Power Management Integrated Circuits is a comprehensive reference for power management IC design, covering the circuit design of main power management circuits like linear and switched-mode voltage regulators, along with sub-circuits such as power switches, gate drivers and their supply, level shifters, the error amplifier, current sensing, and control loop design. Circuits for protection and diagnostics, as well as aspects of the physical design like lateral and vertical power delivery, pin-out, floor planning, grounding/supply guidelines, and packaging, are also addressed. A full chapter is dedicated to the design of integrated passives. The text illustrates the application of power management integrated circuits (PMIC) to growth areas like computing, the Internet of Things, mobility, and renewable energy. Includes numerous real-world examples, case studies, and exercises illustrating key design concepts and techniques. Offering a unique insight into this rapidly evolving technology through the author’s experience developing PMICs in both the industrial and academic environment, Design of Power Management Integrated Circuits includes information on: Capacitive, inductive and hybrid DC-DC converters and their essential circuit blocks, covering error amplifiers, comparators, and ramp generators Sensing, protection, and diagnostics, covering thermal protection, inductive loads and clamping structures, under-voltage, reference and power-on reset generation Integrated MOS, MOM and MIM capacitors, integrated inductors Control loop design and PWM generation ensuring stability and fast transient response; subharmonic oscillations in current mode control (analysis and circuit design for slope compensation) DC behavior and DC-related circuit design, covering power efficiency, line and load regulation, error amplifier, dropout, and power transistor sizing Commonly used level shifters (including sizing rules) and cascaded (tapered) driver sizing and optimization guidelines Optimizing the physical design considering packaging, floor planning, EMI, pinout, PCB design and thermal design Design of Power Management Integrated Circuits is an essential resource on the subject for circuit designers/IC designers, system engineers, and application engineers, along with advanced undergraduate students and graduate students in related programs of study.
Download or read book DC DC Converter Handbook written by David Reusch and published by . This book was released on 2015-09-30 with total page 185 pages. Available in PDF, EPUB and Kindle. Book excerpt: The intent of this handbook is to aid in the adoption ofGaN power transistors by examining power solutions for data centers and telecommunicationssystems through hardware examples. This handbook examines the benefits of enhancementmodegallium nitride FETs (eGaN® FETs) in power conversion applications with an inputvoltage range centered around 48 VDC with load voltage as low as 1 VDC.
Download or read book Power Electronics in Renewable Energy Systems and Smart Grid written by Bimal K. Bose and published by John Wiley & Sons. This book was released on 2019-08-06 with total page 756 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Control of Power Electronic Converters and Systems Volume 4 written by Frede Blaabjerg and published by Academic Press. This book was released on 2024-02-24 with total page 642 pages. Available in PDF, EPUB and Kindle. Book excerpt: Control of Power Electronic Converters and Systems, Volume Four covers emerging topics in the control of power electronics and converters not covered in previous volumes, including emerging power converter topologies, storage systems, battery chargers and the smart transformer. This updated edition specifically focuses on emerging power converter topologies and discusses very recent advances and topics with applications in power electronics and formidable probable dynamics. Chapters include modeling of power converters and their control, with supportive simulations and additional experimental results.Anyone looking for fundamental knowledge regarding new trends in power electronics by application, and also ready to use models and methodologies in their design, control and testing will find this the next invaluable resource in this highly regarded series. Combines essential control design methods and trends with different applications of power convertor topologies Includes global perspectives, case studies and real examples from different applications and their control Features ready-to-use models and methodologies in power electronic application, their design, control and testing
Download or read book Energy efficient and Power dense DC DC Converters in Data Center and Electric Vehicle Applications Using Wide Bandgap Devices written by Weimin Zhang and published by . This book was released on 2015 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Reconfigurable Switched Capacitor Power Converters written by Dongsheng Ma and published by Springer Science & Business Media. This book was released on 2012-07-25 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides readers specializing in ultra-low power supply design for self-powered applications an invaluable reference on reconfigurable switched capacitor power converters. Readers will benefit from a comprehensive introduction to the design of robust power supplies for energy harvesting and self-power applications, focusing on the use of reconfigurable switched capacitor based DC-DC converters, which is ideal for such applications. Coverage includes all aspects of switched capacitor power supply designs, from fundamentals, to reconfigurable power stages, and sophisticated controller designs.
Download or read book High Voltage Dc dc Converter with Dynamic Voltage Regulation and Decoupling During Load generated Arcs written by and published by . This book was released on 1995 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A high-power power supply produces a controllable, constant high voltage output under varying and arcing loads. The power supply includes a voltage regulator, an inductor, an inverter for producing a high frequency square wave current of alternating polarity, an improved inverter voltage clamping circuit, a step up transformer, an output rectifier for producing a dc voltage at the output of each module, and a current sensor for sensing output current. The power supply also provides dynamic response to varying loads by controlling the voltage regulator duty cycle and circuitry is provided for sensing incipient arc currents at the output of the power supply to simultaneously decouple the power supply circuitry from the arcing load. The power supply includes a plurality of discrete switching type dc--dc converter modules.
Download or read book The Proceedings of 2023 International Conference on Wireless Power Transfer ICWPT2023 written by Chunwei Cai and published by Springer Nature. This book was released on with total page 728 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Self Commutating Converters for High Power Applications written by Jos Arrillaga and published by John Wiley & Sons. This book was released on 2010-01-12 with total page 324 pages. Available in PDF, EPUB and Kindle. Book excerpt: For very high voltage or very high current applications, the power industry still relies on thyristor-based Line Commutated Conversion (LCC), which limits the power controllability to two quadrant operation. However, the ratings of self-commutating switches such as the Insulated-Gate Bipolar Transistor (IGBT) and Integrated Gate-Commutated Thyristor (IGCT), are reaching levels that make the technology possible for very high power applications. This unique book reviews the present state and future prospects of self-commutating static power converters for applications requiring either ultra high voltages (over 600 kV) or ultra high currents (in hundreds of kA). It is an important reference for electrical engineers working in the areas of power generation, transmission and distribution, utilities, manufacturing and consulting organizations. All topics in this area are held in this one complete volume. Within these pages, expect to find thorough coverage on: modelling and control of converter dynamics; multi-level Voltage Source Conversion (VSC) and Current Source Conversion (CSC); ultra high-voltage VSC and CSC DC transmission; low voltage high DC current AC-DC conversion; industrial high current applications; power conversion for high energy storage. This text has a host of helpful material that also makes it a useful source of knowledge for final year engineering students specializing in power engineering, and those involved in postgraduate research.
Download or read book SiC Technology written by Maurizio Di Paolo Emilio and published by Springer Nature. This book was released on with total page 317 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Control of Power Electronic Converters and Systems written by Frede Blaabjerg and published by Academic Press. This book was released on 2018-04-27 with total page 570 pages. Available in PDF, EPUB and Kindle. Book excerpt: Control of Power Electronic Converters, Volume Two gives the theory behind power electronic converter control and discusses the operation, modelling and control of basic converters. The main components of power electronics systems that produce a desired effect (energy conversion, robot motion, etc.) by controlling system variables (voltages and currents) are thoroughly covered. Both small (mobile phones, computer power supplies) and very large systems (trains, wind turbines, high voltage power lines) and their power ranges, from the Watt to the Gigawatt, are presented and explored. Users will find a focused resource on how to apply innovative control techniques for power converters and drives. Discusses different applications and their control Explains the most important controller design methods, both in analog and digital Describes different, but important, applications that can be used in future industrial products Covers voltage source converters in significant detail Demonstrates applications across a much broader context
Download or read book GaN based Point of load Converters for Data Center Applications written by Douglas Wayne Bouler (III) and published by . This book was released on 2018 with total page 149 pages. Available in PDF, EPUB and Kindle. Book excerpt: The growth of the information technology sector has increased demand for high-density, high-efficiency point-of-load (POL) converters. As industry continues to demand an increase in server processing power, high-current operation presents challenges to designing high-efficiency POL converters. Increased conduction and overlap losses induce significant power losses in high-power modes. The introduction of Gallium-Nitride (GaN) switching devices and the implementation of zero-current-switching (ZCS) topologies for POL applications have the potential to improve converter efficiency while maintaining or surpassing the industrial power density standard. This thesis addresses the challenges presented by high-current operation by demonstrating an accurate power loss model of the quasi-resonant zero-current-switching (QR-ZCS) buck converter and presents a comparison between the synchronous buck and QR-ZCS buck in a 5-1.8 V POL application.
Download or read book High Efficiency Power Supply Using New SiC Devices written by Ashot Melkonyan and published by kassel university press GmbH. This book was released on 2007 with total page 159 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Digital Control of High Frequency Switched Mode Power Converters written by Luca Corradini and published by John Wiley & Sons. This book was released on 2015-07-10 with total page 368 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is focused on the fundamental aspects of analysis, modeling and design of digital control loops around high-frequency switched-mode power converters in a systematic and rigorous manner Comprehensive treatment of digital control theory for power converters Verilog and VHDL sample codes are provided Enables readers to successfully analyze, model, design, and implement voltage, current, or multi-loop digital feedback loops around switched-mode power converters Practical examples are used throughout the book to illustrate applications of the techniques developed Matlab examples are also provided
Download or read book Energy Efficient Servers written by Corey Gough and published by Apress. This book was released on 2015-04-07 with total page 347 pages. Available in PDF, EPUB and Kindle. Book excerpt: Energy Efficient Servers: Blueprints for Data Center Optimization introduces engineers and IT professionals to the power management technologies and techniques used in energy efficient servers. The book includes a deep examination of different features used in processors, memory, interconnects, I/O devices, and other platform components. It outlines the power and performance impact of these features and the role firmware and software play in initialization and control. Using examples from cloud, HPC, and enterprise environments, the book demonstrates how various power management technologies are utilized across a range of server utilization. It teaches the reader how to monitor, analyze, and optimize their environment to best suit their needs. It shares optimization techniques used by data center administrators and system optimization experts at the world’s most advanced data centers.
