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An Integrated Capacitive Brushless Excitation System For Wound Field Synchronous Machines Using Low Cost Printed Circuit Boards
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Book Synopsis An Integrated Capacitive Brushless Excitation System for Wound Field Synchronous Machines Using Low-cost Printed Circuit Boards by : Skyler Steven Hagen
Download or read book An Integrated Capacitive Brushless Excitation System for Wound Field Synchronous Machines Using Low-cost Printed Circuit Boards written by Skyler Steven Hagen and published by . This book was released on 2019 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt: With the current proliferation of electric machines taking over roles that were historically performed by mechanical transmissions and combustion engines, strides are being taken to make electric machines more power and torque dense, as well as less expensive. The wound field synchronous machine (WFSM) has advantages in power density, controllability, as well as cost of manufacturing, over other types including induction machines and permanent magnet synchronous machines. Its use for vehicle and traction applications has been limited due to the requirement of electrical power on the rotor field windings throughout the machine's entire range of speed, including stall. Field excitation requirements at stall and low speeds prohibit the use of conventional brushless exciters, commonly used in gen-sets, which rely on shaft rotation and torque to produce field current. Gapped rotating electromagnetic transformers allow excitation at stall but suffer from complexity of manufacturing and added volume to accommodate the ferrous core materials required to complete a magnetic circuit. All contactless field excitation methods require a rotating rectifier diode board or assembly to be installed on the rotor, alongside the brushless exciter or rotating transformer, in order to provide direct current to the field winding, from a contactless power coupler which is inherently alternating current. Capacitive power transfer (CPT) has been shown to be competitive with inductive power transfer in supplying full field excitation to wound rotor synchronous machines. In this thesis, a capacitive power transfer system is described in which the rotating rectifier board, manufactured using conventional printed circuit board techniques, dual-purposes as the capacitive power coupling structure, resulting in an efficient, low cost and compact means for transferring kilowatt scale electrical power to a wound field synchronous machine. A design process for the capacitive coupler itself in conjunction with necessary passive components and controls is laid out, and experimental results are given for a CPT system being used to provide full field excitation to a 55kW WFSM.
Book Synopsis Capacitive Power Transfer Field Excitation with an Integrated Resolver for Synchronous Machines by : Marisa Jean Tisler Liben
Download or read book Capacitive Power Transfer Field Excitation with an Integrated Resolver for Synchronous Machines written by Marisa Jean Tisler Liben and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Permanent magnet synchronous machines currently dominate traction motor applications such aselectric vehicles. However, wound field synchronous machines offer a comparable alternative in terms of performance and efficiency without the unpredictable prices and high carbon emissions of mining and manufacturing permanent magnets. These machines are ubiquitous at megawatt levels, especially in power plants, but require high-performance, low-cost excitation systems in order to be attractive as traction motors. This work continues research into capacitive power transfer (CPT) as a suitable wireless excitation method for wound field synchronous machines. Here, a capacitive power transfer system is scaled beyond previous work to achieve a > 3X increase in power transfer over previous work by increasing the frequency to > 6.78MHz. A peak output power of 2.3kW at a DCDC efficiency of 88.5% is reached in this system. The system features a minimal part count series tank resonant topology with the inverter redesigned for megahertz level operation with special consideration for stray inductance verified in Ansys Q3D FEA. Likewise, the coupler structure's rectifier is updated to reduce the total parts count by half and handle kilowatt output power with a current-stiff rectifier. The current stiff rectifier features a large DC filter inductor on the output to maintain continuous conduction operation of the diodes. Using SiC Schottky diodes the rectifier has superior performance over conventional voltage-stiff rectifiers to achieve the 2.3kW output power to the load. Additionally, a capacitive resolver is developed to be integrated around the rotating rectifier ofany wireless exciter and also around the CPT coupler boards. This solution reduces the machine cost for traction applications by removing the cost of an external rotor position sensor. The capacitive resolver is made to be a drop-in replacement for conventional magnetic resolvers and compatible with their existing demodulation strategies. The general integrated resolver and rectifier is tested with a digital demodulation kit, AD2S1210 from Analog Devices, and achieves a maximum angle error of 0.3 degrees. The carrier excitation frequency is 20kHz as is standard for magnetic resolvers. For the CPT-integrated resolver and rectifier, the excitation frequency is > 6.78MHz and demodulation with an analog multiplier is used instead. A maximum rotor angle error of 10 degrees is achieved. Overall, the integrated capacitive resolver and rectifier provides an additional pathway to reduce the wound field synchronous machine system cost for adoption in traction applications.
Book Synopsis Design of Wound Field Synchronous Machines and Hybrid Excitation Synchronous Machines for Electric Vehicle Traction with Brushless Capacitive Field Excitation by : Antonio Di Gioia
Download or read book Design of Wound Field Synchronous Machines and Hybrid Excitation Synchronous Machines for Electric Vehicle Traction with Brushless Capacitive Field Excitation written by Antonio Di Gioia and published by . This book was released on 2018 with total page 460 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Design and Application of Modern Synchronous Generator Excitation Systems by : Jicheng Li
Download or read book Design and Application of Modern Synchronous Generator Excitation Systems written by Jicheng Li and published by John Wiley & Sons. This book was released on 2019-03-18 with total page 1137 pages. Available in PDF, EPUB and Kindle. Book excerpt: Uses real world case studies to present the key technologies of design and application of the synchronous generator excitation system This book systematically introduces the important technologies of design and application of the synchronous generator excitation system, including the three-phase bridge rectifier circuit, diode rectifier for separate excitation, brushless excitation system and the static self-stimulation excitation system. It fuses discussions on specific topics and basic theories, providing a detailed description of the theories essential for synchronous generators in the analysis of excitation systems. Design and Application of Modern Synchronous Generator Excitation Systems provides a cutting-edge examination of excitation system, addressing conventional hydro-turbines, pumped storage units, steam turbines, and nuclear power units. It looks at the features and performance of the excitation system of the 700MW hydro-turbine deployed at the Three Gorges Hydropower Plant spanning the Yangtze River in China, as well as the working principle and start-up procedure of the static frequency converter (SFC) of pumped storage units. It also expounds on the composition of the excitation transformer, power rectifier, de-excitation equipment, and automatic excitation regulator—in addition to the performance features of the excitation system of conventional 600/1000MW turbines and the excitation system of the 1000MW nuclear power unit. Presents cutting-edge technologies of the excitation system from a unique engineering perspective Offers broad appeal to power system engineers who require a better understanding of excitation systems Addresses hydro-turbines, pumped storage units, steam turbines, and nuclear power units Provides an interdisciplinary examination of a range of applications Written by a senior expert in the area of excitation systems Written by an author with over 50 years' experience, Design and Application of Modern Synchronous Generator Excitation Systems is an excellent text that offers an interdisciplinary exposition for professionals, researchers, and academics alike.
Book Synopsis GB/T 7409.4-2023 Translated English of Chinese Standard (GB/T 7409.4-2023, GBT7409.4-2023) by : https://www.chinesestandard.net
Download or read book GB/T 7409.4-2023 Translated English of Chinese Standard (GB/T 7409.4-2023, GBT7409.4-2023) written by https://www.chinesestandard.net and published by https://www.chinesestandard.net. This book was released on 2024-08-25 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: This document specifies the general requirements and usage conditions for the excitation systems for medium and small synchronous machines, the performance requirements for the excitation systems for synchronous generators, the performance requirements for the excitation systems for synchronous machines, the test rules, equipment completeness, marking, packaging, transportation and storage, as well as mass production and quality assurance, etc. This document is applicable to the design and manufacturing of the excitation systems for 50 Hz and 60 Hz synchronous machines in the following scopes: ---hydraulic generators below 10,000 kW; ---turbine generators below 6,000 kW; ---internal combustion generators of 3,200 kW and below; ---synchronous machines below 10,000 kW.
Book Synopsis A Brushless Field Excitation System Utilizing Both Induction and Synchronous Machine Concepts by : Lawrence W. Messenger
Download or read book A Brushless Field Excitation System Utilizing Both Induction and Synchronous Machine Concepts written by Lawrence W. Messenger and published by . This book was released on 1977 with total page 154 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Synchronous Machines by : Mulukutla S. Sarma
Download or read book Synchronous Machines written by Mulukutla S. Sarma and published by Taylor & Francis. This book was released on 1979-01-01 with total page 582 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Brushless Excitation System for Synchronous Machines by : J. M. Mwenechanya
Download or read book A Brushless Excitation System for Synchronous Machines written by J. M. Mwenechanya and published by . This book was released on 1976 with total page 66 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Modeling, Design and Demonstration of Electrostatic Synchronous Machines by : Baoyun Ge
Download or read book The Modeling, Design and Demonstration of Electrostatic Synchronous Machines written by Baoyun Ge and published by . This book was released on 2018 with total page 183 pages. Available in PDF, EPUB and Kindle. Book excerpt: This research focuses on fluid filled electrostatic synchronous machines, an emerging family of machines that hold promising specific and volumetric torque density. The contributions of the research are three thrusts: dielectric liquid selection, circuit modeling and electrostatic design/optimization. Effective electromechanical power conversion using electrostatics requires dielectric liquids whose permittivity and breakdown field strength can facilitate adequate electric shear stress beyond the capabilities of media such as air or vacuum. This research discusses design points for practical electrostatic force production and evaluates available off-the-shelf dielectric liquid in terms of electric pressure and shear capability. Circuit models of the proposed machines were developed to understand torque production as well as form a basis for vector control. Unlike magnetic machines where the conduction paths are confined within windings, the current field in the proposed machine is co-located with the electrostatic field. This research blends the electrical behavior of the dielectric fluid into the dq-axis model. The resultant torque equation is parsed into field, saliency and induction torque. Each component of the torque equation is expressed as functions of few key capacitances for the optimization purpose and maximum torque per volt is derived. Effective electromechanical power conversion using electrostatics also requires optimal geometric design. This research proposes an asymptotical approach incorporating conformal mapping techniques with field analysis to obtain the lower and upper bounds of the torque production, the trend of which can be correlated with the machine geometric parameters. This could be regarded as the sizing process in the well established machine design practices. A finer optimization routine is then implemented by solving electrostatic field analytically. The theoretical contributions were verified by an axial flux prototype machine constructed of cascaded printed circuit boards. This construction approach is low cost and scalable, thereby demonstrating a path for industrial development. Building the machine from composites and plastics plated with conductor allows it to be lightweight with improved torque density, which is a big advantage over traditional magnetic magnetic machines in terms of manufacturing costs and materials sustainability.
Book Synopsis Permanent Magnet Motor Technology by : Jacek F. Gieras
Download or read book Permanent Magnet Motor Technology written by Jacek F. Gieras and published by CRC Press. This book was released on 2009-08-25 with total page 591 pages. Available in PDF, EPUB and Kindle. Book excerpt: The importance of permanent magnet (PM) motor technology and its impact on electromechanical drives has grown exponentially since the publication of the bestselling second edition. The PM brushless motor market has grown considerably faster than the overall motion control market. This rapid growth makes it essential for electrical and electromechanical engineers and students to stay up-to-date on developments in modern electrical motors and drives, including their control, simulation, and CAD. Reflecting innovations in the development of PM motors for electromechanical drives, Permanent Magnet Motor Technology: Design and Applications, Third Edition demonstrates the construction of PM motor drives and supplies ready-to-implement solutions to common roadblocks along the way. This edition supplies fundamental equations and calculations for determining and evaluating system performance, efficiency, reliability, and cost. It explores modern computer-aided design of PM motors, including the finite element approach, and explains how to select PM motors to meet the specific requirements of electrical drives. The numerous examples, models, and diagrams provided in each chapter facilitate a lucid understanding of motor operations and characteristics. This 3rd edition of a bestselling reference has been thoroughly revised to include: Chapters on high speed motors and micromotors Advances in permanent magnet motor technology Additional numerical examples and illustrations An increased effort to bridge the gap between theory and industrial applications Modified research results The growing global trend toward energy conservation makes it quite possible that the era of the PM brushless motor drive is just around the corner. This reference book will give engineers, researchers, and graduate-level students the comprehensive understanding required to develop the breakthroughs that will push this exciting technology to the forefront.
Book Synopsis Design and Development on Static Excitation System for Synchronous Machines by : B. S. Ramakrishna Iyengar
Download or read book Design and Development on Static Excitation System for Synchronous Machines written by B. S. Ramakrishna Iyengar and published by . This book was released on 1976 with total page 147 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Multiphysics Simulation by Design for Electrical Machines, Power Electronics and Drives by : Marius Rosu
Download or read book Multiphysics Simulation by Design for Electrical Machines, Power Electronics and Drives written by Marius Rosu and published by John Wiley & Sons. This book was released on 2017-12-18 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt: Presents applied theory and advanced simulation techniques for electric machines and drives This book combines the knowledge of experts from both academia and the software industry to present theories of multiphysics simulation by design for electrical machines, power electronics, and drives. The comprehensive design approach described within supports new applications required by technologies sustaining high drive efficiency. The highlighted framework considers the electric machine at the heart of the entire electric drive. The book also emphasizes the simulation by design concept—a concept that frames the entire highlighted design methodology, which is described and illustrated by various advanced simulation technologies. Multiphysics Simulation by Design for Electrical Machines, Power Electronics and Drives begins with the basics of electrical machine design and manufacturing tolerances. It also discusses fundamental aspects of the state of the art design process and includes examples from industrial practice. It explains FEM-based analysis techniques for electrical machine design—providing details on how it can be employed in ANSYS Maxwell software. In addition, the book covers advanced magnetic material modeling capabilities employed in numerical computation; thermal analysis; automated optimization for electric machines; and power electronics and drive systems. This valuable resource: Delivers the multi-physics know-how based on practical electric machine design methodologies Provides an extensive overview of electric machine design optimization and its integration with power electronics and drives Incorporates case studies from industrial practice and research and development projects Multiphysics Simulation by Design for Electrical Machines, Power Electronics and Drives is an incredibly helpful book for design engineers, application and system engineers, and technical professionals. It will also benefit graduate engineering students with a strong interest in electric machines and drives.
Book Synopsis Electrical Machines, Drives, and Power Systems by : Theodore Wildi
Download or read book Electrical Machines, Drives, and Power Systems written by Theodore Wildi and published by Pearson Educación. This book was released on 2006 with total page 966 pages. Available in PDF, EPUB and Kindle. Book excerpt: The HVDC Light[trademark] method of transmitting electric power. Introduces students to an important new way of carrying power to remote locations. Revised, reformatted Instructor's Manual. Provides instructors with a tool that is much easier to read. Clear, practical approach.
Book Synopsis Electrical Papers by : Oliver Heaviside
Download or read book Electrical Papers written by Oliver Heaviside and published by . This book was released on 1894 with total page 594 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Principles of Electric Machines and Power Electronics by : P. C. Sen
Download or read book Principles of Electric Machines and Power Electronics written by P. C. Sen and published by New York ; Toronto : J. Wiley. This book was released on 1997 with total page 648 pages. Available in PDF, EPUB and Kindle. Book excerpt: This new edition combines the traditional areas of electric machinery with the latest in modern control and power electronics. It includes coverage of multi-machine systems, brushless motors and switched reluctance motors, as well as constant flux and constant current operation of induction motors. It also features additional material on new solid state devices such as Insulated Gate Bipolar Transistors and MOS-Controlled Thrysistors.
Book Synopsis Emerging Technologies for Electric and Hybrid Vehicles by : Jesús Manuel González Pérez
Download or read book Emerging Technologies for Electric and Hybrid Vehicles written by Jesús Manuel González Pérez and published by MDPI. This book was released on 2018-10-17 with total page 373 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a printed edition of the Special Issue "Emerging Technologies for Electric and Hybrid Vehicles" that was published in energies
Book Synopsis Advancements in Electric Machines by : J. F. Gieras
Download or read book Advancements in Electric Machines written by J. F. Gieras and published by Springer Science & Business Media. This book was released on 2008-11-14 with total page 283 pages. Available in PDF, EPUB and Kindle. Book excerpt: Traditionally, electrical machines are classi?ed into d. c. commutator (brushed) machines, induction (asynchronous) machines and synchronous machines. These three types of electrical machines are still regarded in many academic curricula as fundamental types, despite that d. c. brushed machines (except small machines) have been gradually abandoned and PM brushless machines (PMBM) and switched reluctance machines (SRM) have been in mass p- duction and use for at least two decades. Recently, new topologies of high torque density motors, high speed motors, integrated motor drives and special motors have been developed. Progress in electric machines technology is stimulated by new materials, new areas of applications, impact of power electronics, need for energy saving and new technological challenges. The development of electric machines in the next few years will mostly be stimulated by computer hardware, residential and public applications and transportation systems (land, sea and air). At many Universities teaching and research strategy oriented towards el- trical machinery is not up to date and has not been changed in some co- tries almost since the end of the WWII. In spite of many excellent academic research achievements, the academia–industry collaboration and technology transfer are underestimated or, quite often, neglected. Underestimation of the role of industry, unfamiliarity with new trends and restraint from technology transfer results, with time, in lack of external ?nancial support and drastic - cline in the number of students interested in Power Electrical Engineering.
