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A Single Stage Ac Dc Forward Converter With Input Power Factor Correction And Reduced Dc Bus Voltage
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Book Synopsis A Single-stage AC-DC Forward Converter with Input Power Factor Correction and Reduced DC Bus Voltage by : Hanyan
Download or read book A Single-stage AC-DC Forward Converter with Input Power Factor Correction and Reduced DC Bus Voltage written by Hanyan and published by . This book was released on 2003 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A New Single-Stage Power-Factor-Correction AC/DC Converter with Reduced DC Bus Voltage and Energy Recycling Mechanism by : 蔡政家
Download or read book A New Single-Stage Power-Factor-Correction AC/DC Converter with Reduced DC Bus Voltage and Energy Recycling Mechanism written by 蔡政家 and published by . This book was released on 2013 with total page 87 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Single Stage Power Factor Corrected AC/DC Converter by : Matteo Daniele
Download or read book A Single Stage Power Factor Corrected AC/DC Converter written by Matteo Daniele and published by . This book was released on 1998 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Power Electronics Handbook by : Muhammad H. Rashid
Download or read book Power Electronics Handbook written by Muhammad H. Rashid and published by Elsevier. This book was released on 2023-09-27 with total page 1472 pages. Available in PDF, EPUB and Kindle. Book excerpt: Power Electronics Handbook, Fifth Edition delivers an expert guide to power electronics and their applications. The book examines the foundations of power electronics, power semiconductor devices, and power converters, before reviewing a constellation of modern applications. Comprehensively updated throughout, this new edition features new sections addressing current practices for renewable energy storage, transmission, integration, and operation, as well as smart-grid security, intelligent energy, artificial intelligence, and machine learning applications applied to power electronics, and autonomous and electric vehicles. This handbook is aimed at practitioners and researchers undertaking projects requiring specialist design, analysis, installation, commissioning, and maintenance services. Provides a fully comprehensive work addressing each aspect of power electronics in painstaking depth Delivers a methodical technical presentation in over 1500 pages Includes 50+ contributions prepared by leading experts Offers practical support and guidance with detailed examples and applications for lab and field experimentation Includes new technical sections on smart-grid security and intelligent energy, artificial intelligence, and machine learning applications applied to power electronics and autonomous and electric vehicles Features new chapter level templates and a narrative progression to facilitate understanding
Book Synopsis Three-phase Reduced Switch Topologies for AC-DC Front-end and Single-stage Converters by : Dunisha Savindri Wijeratne
Download or read book Three-phase Reduced Switch Topologies for AC-DC Front-end and Single-stage Converters written by Dunisha Savindri Wijeratne and published by . This book was released on 2013 with total page 334 pages. Available in PDF, EPUB and Kindle. Book excerpt: Conventional three-phase AC-DC converters have two converter stages. They have a front-end converter that converts the input AC voltage into an intermediate DC bus voltage and a second, back-end converter that converts this DC bus voltage into the desired isolated DC output voltage. The front-end converter also performs power factor correction (PFC) and shapes the three-phase input currents so that they are nearly sinusoidal and in phase with the three-phase input voltages. This allows the AC power source to be used in the most efficient manner. The front-end AC-DC converter is typically implemented with six switches while the back-end DC-DC converter is typically implemented with a four switch DC-DC full-bridge topology. Power electronic researchers have been motivated to try to reduce the number of switches that are used in the conventional two-stage approach in order to reduce cost and simplify the overall AC-DC converter. There are two general approaches to doing this: This first approach is to reduce the number of switches in the front-end AC-DC converter. The second approach is to combine the AC-DC converter and the DC-DC converter in a single converter so that the overall AC-DC converter can be implemented in a single converter stage that can simultaneously perform AC-DC power conversion with PFC and DC-DC power conversion. The main focus of this thesis is on new power converter topologies that convert a three-phase AC input voltage into an isolated DC output voltage with a reduced number of switches. In the thesis, a new family of reduced switch front-end converter topologies is proposed, an example converter from this new family is selected for further study and a modified version of this topology is studied as well. In addition to these front-end converters, two new three-phase AC-DC single-stage converters are proposed and their properties and characteristics are compared. For each new converter that is investigated in detail, its modes of operation are explained, its steady-state characteristics are determined by mathematical analysis, and the results of the analysis are used to develop a design procedure that can be used to select key components. The design procedure of each new converter is demonstrated with an example that was used in the implementation of an experimental prototype that confirmed the feasibility of the converter. The thesis concludes by presenting that have been reached as a result of the work that was performed, stating its main contributions to the power electronics literature and suggesting future research that can be done based on the thesis work.
Book Synopsis A Single Stage Full Bridge Power Factor Corrected AC/DC Converter by : Nasser Ismail
Download or read book A Single Stage Full Bridge Power Factor Corrected AC/DC Converter written by Nasser Ismail and published by . This book was released on 1996 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book INTELEC'03 written by and published by . This book was released on 2003 with total page 912 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Control Scheme for an AC-DC Single-stage Buck-boost PFC Converter with Improved Output Ripple Reduction by : Kamran Rezaei
Download or read book A Control Scheme for an AC-DC Single-stage Buck-boost PFC Converter with Improved Output Ripple Reduction written by Kamran Rezaei and published by . This book was released on 2012 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt: AC-DC power factor correction (PFC) single-stage converters are attractive because of their cost and their simplicity. In these converters, both PFC and power conversion are done at the same time using a single converter that regulates the output. Since they have only a single controller, these converters operate with an intermediate transformer primary-side DC bus voltage that is unregulated and is dependent on the converters' operating conditions and component values. This means that the DC bus voltage can vary significantly as line and load conditions are changed. Such a variable DC bus voltage makes it difficult to optimally design the converter transformer as well as the DC bus capacitor. One previously proposed single-stage AC-DC converter, the Single-Stage Buck-Boost Direct Energy Transfer (SSBBDET) converter has a clamping mechanism that can clamp the DC bus voltage to a pre-set limit. The clamping mechanism, however, superimposes a low frequency 120 Hz AC component on the output DC voltage so that some means must be taken to reduce this component. These means, however, make the converter transient slow and sluggish. The main objective of this thesis is to minimize the 120 Hz output ripple component and to improve the dynamic response of the SSBBDET converter by using a new control scheme. In the thesis, the operation of the SSBBDET converter is reviewed and the proposed control method is introduced and explained in detail. Key design considerations for the design of the converter controller are discussed and the converter's ability to operate with fixed DC bus voltage, low output ripple and fast dynamic response is confirmed with experimental results obtained from a prototype converter.
Book Synopsis Materials for Sustainable Energy Storage at the Nanoscale by : Fabian Ifeanyichukwu Ezema
Download or read book Materials for Sustainable Energy Storage at the Nanoscale written by Fabian Ifeanyichukwu Ezema and published by CRC Press. This book was released on 2023-07-21 with total page 505 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book Materials for Sustainable Energy Storage Devices at the Nanoscale anticipates covering all electrochemical energy storage devices such as supercapacitors, lithium-ion batteries (LIBs), and fuel cells, transformation and enhancement materials for solar cells, photocatalysis, etc. The focal objective of the book is to deliver stunning and current information to the materials application at nanoscale to researchers and scientists in our contemporary time towardthe enhancement of energy conversion and storage devices. However, the contents of the proposed book, Materials for Sustainable Energy Storage at the Nanoscale, will cover various fundamental principles and wide knowledge of different energy conversion and storage devices with respect to their advancement due to the emergence of nanoscale materials for sustainable storage devices. This book is targeted to be award-winning as well as a reference book for researchers and scientists working on different types of nanoscale materials-based energy storage and conversion devices. Features Comprehensive overview of energy storage devices, an important field of interest for researchers worldwide Explores the importance and growing impact of batteries and supercapacitors Emphasizes the fundamental theories, electrochemical mechanism, and its computational view point and discusses recent developments in electrode designing based on nanomaterials, separators, and fabrication of advanced devices and their performances
Book Synopsis Force Commutated Direct AC-DC Converter with Control of Input Power Factor by : John Weiland Gemmell
Download or read book Force Commutated Direct AC-DC Converter with Control of Input Power Factor written by John Weiland Gemmell and published by . This book was released on 1996 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis High-performance Single-phase Line-interfaced Power Converters by : Danish Shahzad
Download or read book High-performance Single-phase Line-interfaced Power Converters written by Danish Shahzad and published by . This book was released on 2021 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The use of single-phase line-interfaced power converters in electrical power systems is rapidly growing due to the changing nature and power quality requirements of electrical loads. Most applications require these single-phase line-interfaced power converters to be compact and efficient, and depending on application meet additional performance, cost, and reliability targets. This thesis presents innovative system architectures, circuit topologies, design methodologies, and control strategies for highly compact and efficient single-phase ac-dc and ac-ac line-interfaced power converters. First, a comprehensive design methodology for step-down isolated two-stage ac-dc converters is presented which compares various designs and operating modes and selects the optimal design based on overall volume and efficiency. Additionally, a new control strategy is presented for a compact front-end soft-switched power-factor correction (PFC) stage to ensure compliance with strict electromagnetic interference (EMI) regulations. A 1-kW universal-input to 28 V-output isolated ac-dc prototype converter is built to showcase performance benefits of proposed design and control strategies. This prototype achieves a high-power-density of 84W/in3 and maintains greater than 93% efficiency across a wide output power range. Next, the functionality of the proposed ac-dc converter is further enhanced by incorporating a new droop control strategy for parallel operation of multiple similar ac-dc converter modules. The proposed control strategy uses the input current of the secondary dc-dc stage of two-stage ac-dc converters in conjunction with variable droop resistance to achieve near-perfect parallel operation. A multi-module ac-dc conversion system is built to validate the proposed droop control strategy. The parallel modules achieve a current distribution error of less than 2% near their maximum output power. Multiple ac-ac conversion applications are also addressed in this thesis. For highly cost-sensitive applications, two compact and efficient single-stage ac-ac converters are presented which utilize a comprehensive design methodology centered around minimizing the total cost of components. Moreover, innovative control strategies are presented for both ac-ac converters to enable output voltage regulation under input voltage and output load fluctuations. Both single-stage ac-ac prototype converters, utilizing the proposed design and control strategies, are built and tested. The 600-W 480 Vrms to 264 Vrms prototypes achieve power densities exceeding 40W/in3 while maintaining conversion efficiencies of greater than 96% across majority of the output load. Finally, a much more feature-rich ac-dc-ac converter is also proposed for advanced ac-ac conversion applications, such as data center online uninterruptible power supplies (UPS). The proposed transformer-less two-stage ac-ac converter is based on a new circuit topology which can operate at high switching frequencies (up to several MHz) and utilize 50% lower dc-bus capacitance than conventional split-dc-bus topologies. A 1-k VA 120 Vrms prototype ac-dc-ac converter is built and extensively tested to showcase performance improvements. This prototype achieves high peak conversion efficiency of greater than 95% and high power density of 26.4W/in3 while utilizing long-life but relatively bulky film dc-bus capacitors.
Book Synopsis 2000 INTELEC - International Telecommuncations Energy Conf by : IEEE
Download or read book 2000 INTELEC - International Telecommuncations Energy Conf written by IEEE and published by Institute of Electrical & Electronics Engineers(IEEE). This book was released on 2000-10 with total page 808 pages. Available in PDF, EPUB and Kindle. Book excerpt: This text on energy storage covers topics such as batteries and other energy storage systems; thermal management of indoor and outdoor installation; batteries and other energy storage systems; AC/DC power supplies; and batteries and other energy storage systems."
Book Synopsis A Single Phase Single Stage AC/DC Converter with High Input Power Factor and Tight Output Voltage Regulation by : Vikram Reddy Ailreddygari
Download or read book A Single Phase Single Stage AC/DC Converter with High Input Power Factor and Tight Output Voltage Regulation written by Vikram Reddy Ailreddygari and published by . This book was released on 2010 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Three-level Soft-switched DC-to-DC Converter and Single-phase, Single-stage, Three-level AC-to-DC Converter by : Vimala Dharmarajan
Download or read book Three-level Soft-switched DC-to-DC Converter and Single-phase, Single-stage, Three-level AC-to-DC Converter written by Vimala Dharmarajan and published by . This book was released on 2006 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Three-level Soft-switched DC-to-DC Converter and Single-phase, Single-stage, Three-level AC-to-DC Converter by :
Download or read book Three-level Soft-switched DC-to-DC Converter and Single-phase, Single-stage, Three-level AC-to-DC Converter written by and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis proposes a three-level DC-to-DC converter with capacitive output filter and its extension to single-phase, single-stage, three-level AC-to-DC converter with capacitive output filter. The AC-to-DC converter integrates a three-level boost converter operating in discontinuous conduction mode (DCM) and a three-level half-bridge DC-to-DC converter with capacitive output filter. The steady-state operation of the DC-to-DC converter and AC-to-DC converter with capacitive output filter are studied with phase-shifted gating scheme. The three-level topology reduces the voltage rating of the switches to half of the input voltage. Soft-switching is achieved for switches at different load and input voltage conditions. Boost section of the AC-to-DC converter achieves automatic power factor correction (PFC). At reduced load and higher input voltage conditions, the line current Total Harmonic Distortion (THD) increases with phase-shifted gating scheme. The THD has been reduced by using a complementary PWM gating control in the AC-to-DC converter.
Book Synopsis Design and Control of Power Converters 2019 by : Manuel Arias
Download or read book Design and Control of Power Converters 2019 written by Manuel Arias and published by MDPI. This book was released on 2021-07-02 with total page 402 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this book, 20 papers focused on different fields of power electronics are gathered. Approximately half of the papers are focused on different control issues and techniques, ranging from the computer-aided design of digital compensators to more specific approaches such as fuzzy or sliding control techniques. The rest of the papers are focused on the design of novel topologies. The fields in which these controls and topologies are applied are varied: MMCs, photovoltaic systems, supercapacitors and traction systems, LEDs, wireless power transfer, etc.
Book Synopsis Power Electronic Converters by : Christian Rombaut
Download or read book Power Electronic Converters written by Christian Rombaut and published by McGraw-Hill Companies. This book was released on 1987 with total page 380 pages. Available in PDF, EPUB and Kindle. Book excerpt:
