Download or read book Discrete Pulse Control of Ac dc ac Converters for Minimizing Reactive Elements written by Thomas G. Habetler and published by . This book was released on 1989 with total page 592 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Proceedings of the IEEE International Symposium on Industrial Electronics written by and published by . This book was released on 1993 with total page 824 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Analysis Design and Control of Grid Connected Three Phase Pulse Width Modulated AC DC Converter written by Azziddin Mohamad Razali and published by . This book was released on 2013 with total page 215 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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:
Download or read book Control of AC DC AC Converters with Minimized DC Link Capitance Under Grid Harmonic Distortion written by Jae-Won George Hwang and published by . This book was released on 2007 with total page 210 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book American Doctoral Dissertations written by and published by . This book was released on 1993 with total page 704 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Reducing Ripple in an AC DC Converter Via Pulse Width Modulation written by Stephen R. Lee and published by . This book was released on 1978 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Control of AC DC AC Converters with Minimized DC Link Capacitance Under Grid Harmonic Distortion written by Jae-Won George Hwang and published by . This book was released on 2007 with total page 210 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the presence of grid voltage harmonics, an AC-DC-AC drive with conventional fundamental frequency control experiences large line current harmonics, and in the case of a minimized DC link capacitance, large DC link voltage ripple harmonics. This thesis presents and compares two control methodologies that overcome this problem and suppress the effects of grid voltage harmonics on AC-DC-AC converters with minimized DC link capacitance. The first harmonic mitigation controller is implemented via multiple synchronous frame control structure somewhat similar to those used in active power filter applications. The other harmonic mitigation controller is realized in the stationary frame with several variations to the controller via the inclusion of cross-coupling control and feedback terms.
Download or read book Dynamic Carrier Pulse positioning for Single stage Isolated AC DC Converter written by Ambegoda Liyanage Vishwa Perera and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The transportation sector is gaining much more attention towards all-electric modes such as electric vehicles (EV), and more electric aircrafts and ships. EVs lead the transportation sector with luxurious, high performance, and intelligent vehicles. The stored battery energy is the most important factor for the operation of the whole vehicle and therefore, EV battery chargers play an important role in the electric transportation sector. High frequency isolated battery charger converters are much preferred in the industry as they provide electrical isolation and reduce magnetic component size. Phase shifted pulse width modulation is commonly used in transformer isolated converters for high frequency power transfer. Generally, the voltage waveforms are phase shifted no more than 45 degrees for grid connected converter applications. In grid connected applications, the high frequency pulse widths (180° to minimum determined by modulation index) may vary when controlling the grid current. If, for certain duration of the low frequency reference signal, the pulse widths are smaller than the externally-commanded phase shift, the pulses would be completely separated. Under these conditions, unwanted reactive content is generated in the converter increasing the high frequency rms current hence increasing conduction losses. An original concept is proposed to lower the reactive content of the high frequency current by positioning the transformer primary and secondary voltage pulses next to each other whenever the phase shift is larger than the pulse width. The voltage pulses are positioned appropriately in each carrier cycle throughout the entire low frequency reference signal. This concept which is referred to as reference-based pulse position (RPP) allows the operation of the converter beyond 45 degree limit and up to 90 degrees allowing for more power output. The concept is tested on an isolated single-stage bidirectional three-phase ac-dc converter which conducts both low frequency grid current and high frequency transformer current. The grid side or the primary of the converter generates the high frequency transformer voltage when controlling the grid current. The switches in the secondary side are then controlled in such a way in each carrier cycle as to coordinate with primary voltage waveform to minimize the reactive content of the high frequency current. The power is transferred utilizing the transformer interlimb leakage inductance. The transformer windings are connected so that the 60Hz grid current does not produce flux in the core leaving only the high frequency flux. Therefore, the size of the magnetics can be reduced which favors a compact design. Furthermore, the dc link utilization is maximized by injecting the third harmonic into the sine reference signals which lowers the dc link requirement by 15%.
Download or read book Resonant Power Converters written by Marian K. Kazimierczuk and published by John Wiley & Sons. This book was released on 2012-11-07 with total page 632 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is devoted to resonant energy conversion in power electronics. It is a practical, systematic guide to the analysis and design of various dc-dc resonant inverters, high-frequency rectifiers, and dc-dc resonant converters that are building blocks of many of today's high-frequency energy processors. Designed to function as both a superior senior-to-graduate level textbook for electrical engineering courses and a valuable professional reference for practicing engineers, it provides students and engineers with a solid grasp of existing high-frequency technology, while acquainting them with a number of easy-to-use tools for the analysis and design of resonant power circuits. Resonant power conversion technology is now a very hot area and in the center of the renewable energy and energy harvesting technologies.
Download or read book Science Abstracts written by and published by . This book was released on 1995 with total page 1360 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Pulse Width Modulation for Power Converters written by D. Grahame Holmes and published by John Wiley & Sons. This book was released on 2003-10-03 with total page 748 pages. Available in PDF, EPUB and Kindle. Book excerpt: * The first single volume resource for researchers in the field who previously had to depend on separate papers and conference records to attain a working knowledge of the subject. * Brings together the field's diverse approaches into an integrated and comprehensive theory of PWM
Download or read book Electrical Electronics Abstracts written by and published by . This book was released on 1997 with total page 1948 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Proceedings of the International Conference on Information Engineering Management and Security 2014 written by JBV Subramanyam, Kokula Krishna Hari K and published by Association of Scientists, Developers and Faculties. This book was released on 2014-05-15 with total page 481 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Proceedings of the International Conference on Information Engineering, Management and Security 2014 which happened at Christu Jyoti Institute of Technology.
Download or read book Digital Power Electronics and Applications written by Fang Lin Luo and published by Elsevier. This book was released on 2010-07-20 with total page 422 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this book is to describe the theory of Digital Power Electronics and its applications. The authors apply digital control theory to power electronics in a manner thoroughly different from the traditional, analog control scheme. In order to apply digital control theory to power electronics, the authors define a number of new parameters, including the energy factor, pumping energy, stored energy, time constant, and damping time constant. These parameters differ from traditional parameters such as the power factor, power transfer efficiency, ripple factor, and total harmonic distortion. These new parameters result in the definition of new mathematical modeling: • A zero-order-hold (ZOH) is used to simulate all AC/DC rectifiers. • A first-order-hold (FOH) is used to simulate all DC/AC inverters. • A second-order-hold (SOH) is used to simulate all DC/DC converters. • A first-order-hold (FOH) is used to simulate all AC/AC (AC/DC/AC) converters. Presents most up-to-date methods of analysis and control algorithms for developing power electronic converters and power switching circuits Provides an invaluable reference for engineers designing power converters, commercial power supplies, control systems for motor drives, active filters, etc. Presents methods of analysis not available in other books
Download or read book Electrical Distribution Networks written by Nouredine Hadjsaïd and published by John Wiley & Sons. This book was released on 2013-01-22 with total page 350 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book describes the fundamental aspects of the new generation of electrical distribution grids, taking as its starting point the opportunities that exist for restructuring existing infrastructure. It emphasizes the incorporation of renewable energy sources into the distribution grid and the need for a technological evolution towards the implementation of smartgrids. The book is organized into two parts: the first part analyzes the integration of distributed energy sources into the distribution grid and the impact of these sources on grid operation. After a general description of the general characteristics of distribution grids and renewable energy sources, it then analyzes the economics of electrical energy distribution networks and presents the impact of these sources on grid operation. The second part of the book then analyzes the various functions which allow for safe operation of the grid and realization of the path towards real world application of smartgrids.
Download or read book Control in Power Electronics written by Marian P. Kazmierkowski and published by Elsevier. This book was released on 2002-08-30 with total page 529 pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors were originally brought together to share research and applications through the international Danfoss Professor Programme at Aalborg University in Denmark. Personal computers would be unwieldy and inefficient without power electronic dc supplies. Portable communication devices and computers would also be impractical. High-performance lighting systems, motor controls, and a wide range of industrial controls depend on power electronics. In the near future we can expect strong growth in automotive applications, dc power supplies for communication systems, portable applications, and high-end converters. We are approaching a time when all electrical energy will be processed and controlled through power electronics somewhere in the path from generation to end use. - The most up-to-date information available is presented in the text - Written by a world renowned leader in the field
