Download or read book On the Design of Rare earth free and Reduced Rare earth Permanent Magnet Machines for High performance Traction Applications written by and published by . This book was released on 2015 with total page 770 pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation focuses on techniques to design electric machines that approach the torque density and other key performance metrics of modern rare-earth permanent magnet (PM) machines, while limiting or eliminating the use of rare-earth materials. A wide variety of candidate PM machine topologies have been evaluated to determine their suitability to meet this objective based on a number of design and performance characteristics. Of major interest is the ability of each topology to shield the magnets from demagnetizing flux that is imposed by the stator winding currents. One particular topology - a PM-sandwiched flux-switching permanent magnet (FSPM) machine - is examined in detail. Closer examination has shown that this PM-sandwiched FSPM machines offers several attractive features including increased demagnetization-withstand capability, a critically important feature for the application of non-rare-earth PM materials. Several of the desirable performance features of the PM-sandwiched FSPM machine have their origin in its boosted magnet content compared to many other PM machine topologies. This property increases the magnetic loading without violating the geometric constraints imposed by the conventional FSPM machine geometry. As a result, the torque-per-current performance metric of the PM-sandwiched FSPM machine exceeds that of traditional IPM machines as well as conventional FSPM machines. When carefully designed, the predicted performance of the PM-sandwiched FSPM machine delivers higher efficiency over much of the torque-speed operating region. A concept demonstrator PM-sandwiched FSPM machine has been constructed using ferrite magnets to validate the analytical results. Test results for the machine are presented and compared to the calculated performance characteristics using finite element (FE) and closed-form analysis. Agreement between performance predictions based on FE analysis and experimental test results is quite good for the machine's back-emf and torque-per-current characteristics. However, discrepancies were encountered during experimental testing of the machine's efficiency. Closer examination showed that, when the extraneous/parasitic loss components are appropriately considered, the agreement between the predicted losses of the PM-sandwiched FSPM machine and the experimental test results is much improved. In addition to building confidence in the predicted performance advantages of the PM-sandwiched PM machine, the experimental testing also exposed the potential efficiency penalties imposed by various parasitic loss mechanisms.
Download or read book The Rediscovery of Synchronous Reluctance and Ferrite Permanent Magnet Motors written by Gianmario Pellegrino and published by Springer. This book was released on 2016-04-28 with total page 142 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book offers an essential compendium on the analysis and design of synchronous motors for variable-speed applications. Focusing on synchronous reluctance and ferrite permanent-magnet (PM) synchronous reluctance machines, it provides a broad perspective on three-phase machines for variable speed applications, a field currently dominated by asynchronous machines and rare-earth PM synchronous machines. It also describes synchronous reluctance machines and PM machines without rare-earth materials, comparing them to state-of-the-art solutions. The book provides readers with extensive information on and finite element models of PM synchronous machines, including all relevant equations and with an emphasis on synchronous-reluctance and PM-assisted synchronous-reluctance machines. It covers ferrite-assisted machines, modeled as a subcase of PM-assistance, fractional slot combinations solutions, and a quantitative, normalized comparison of torque capability with benchmark PM machines. The book discusses a wealth of techniques for identifying machine parameters, with an emphasis on self-commissioning algorithms, and presents methods for automated machine design and optimization, including a software tool developed for this purpose. Addressing an important gap in the field of PM-less and less-PM electrical machines, it is intended as a self-contained reference guide for both graduate students and professional machine designers, and as a useful text for university courses on automated and/or optimized design of electrical machines and drives.
Download or read book Rare Earth Permanent Magnet Alloys High Temperature Phase Transformation written by Shuming Pan and published by Springer. This book was released on 2014-12-01 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt: The process of high temperature phase transition of rare earth permanent-magnet alloys is revealed by photographs taken by high voltage TEM. The relationship between the formation of nanocrystal and magnetic properties is discussed in detail, which effects alloys composition and preparation process. The experiment results verified some presumptions, and were valuable for subsequent scientific research and creating new permanent-magnet alloys. The publication is intended for researchers, engineers and managers in the field of material science, metallurgy, and physics. Prof. Shuming Pan is senior engineer of Beijing General Research Institute of Non-ferrous Metal.
Download or read book Rare Earth Permanent Magnets written by I.R. Harris and published by Elsevier. This book was released on 2014-04-03 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt: These papers provide an interesting collection of contributions on fundamental magnetic behaviour, microstructural studies, processing methods and applications of rare earth, iron-rich, high performance permanent magnets. The remarkably versatile nature of the Nd-Fe-B-type alloys with respect to magnet processing is very evident in these proceedings. Thus there are papers which describe the production of magnets by the die-upset-forging of melt-spun ribbon, by cold-compaction of melt-spun-ribbon with soft metals, by mechanical alloying and by hot working of cast material. Work is also reported on the production of new permanent magnets from melt-spun material based on the alloys Nd4Fe78B18 and SmFe11.5Ti1.04. Both these alloys look promising and the former appears to be close to commercial exploitation.
Download or read book High Speed High Power Permanent Magnet Machine Design Techniques written by Anthony David Wearing and published by . This book was released on 1990 with total page 492 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Advances in Smart Grid Technology written by Ning Zhou and published by Springer Nature. This book was released on 2020-09-18 with total page 545 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book comprises the select proceedings of the International Conference on Power Engineering Computing and Control (PECCON) 2019. This volume covers several important topics such as optimal data selection and error-free data acquiring via artificial intelligence and machine learning techniques, information and communication technologies for monitoring and control of smart grid components, and data security in smart grid network. In addition, it also focuses on economics of renewable electricity generation, policies for distributed generation, smart eco-structures and systems. This book can be useful for beginners, researchers as well as professionals interested in the area of smart grid technology.
Download or read book Power Converters Drives and Controls for Sustainable Operations written by S. Ganesh Kumar and published by John Wiley & Sons. This book was released on 2023-08-01 with total page 836 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Automatic Control Mechatronics and Industrial Engineering written by Yigang He and published by CRC Press. This book was released on 2019-03-20 with total page 359 pages. Available in PDF, EPUB and Kindle. Book excerpt: Engineering technology development and implementation play an important role in making the industry more sustainable in an increasingly competitive world. This book covers significant recent developments in both fundamental and applied research in the engineering field. Domains of application include, but are not limited to, Intelligent Control Systems and Optimization, Signal Processing, Sensors, Systems Modeling and Control, Robotics and Automation, Industrial and Electric Engineering, Production and Management. This book is an excellent reference work to get up to date with the latest research and developments in the fields of Automation, Mechatronics and Industrial Engineering. It aims to provide a platform for researchers and professionals in all relevant fields to gain new ideas and establish great achievements in scientific development.
Download or read book Extractive Metallurgy of Rare Earths written by Nagaiyar Krishnamurthy and published by CRC Press. This book was released on 2015-12-02 with total page 841 pages. Available in PDF, EPUB and Kindle. Book excerpt: New Edition Now Covers Recycling, Environmental Issues, and Analytical DeterminationEmploying four decades of experience in the rare metal and rare earths industry, the authors of Extractive Metallurgy of Rare Earths, Second Edition present the entire subject of rare earth elements with depth and accuracy. This second edition updates the most impor
Download or read book Rare Earths written by Jacques Lucas and published by Elsevier. This book was released on 2014-09-09 with total page 407 pages. Available in PDF, EPUB and Kindle. Book excerpt: High-technology and environmental applications of the rare-earth elements (REE) have grown dramatically in diversity and importance over the past four decades. This book provides a scientific understanding of rare earth properties and uses, present and future. It also points the way to efficient recycle of the rare earths in end-of-use products and efficient use of rare earths in new products. Scientists and students will appreciate the book's approach to the availability, structure and properties of rare earths and how they have led to myriad critical uses, present and future. Experts should buy this book to get an integrated picture of production and use (present and future) of rare earths and the science behind this picture. This book will prove valuable to.non-scientists as well in order to get an integrated picture of production and use of rare earths in the 21st Century, and the science behind this picture. - Defines the chemical, physical and structural properties of rare earths. - Gives the reader a basic understanding of what rare earths can do for us. - Describes uses of each rare earth with chemical, physics, and structural explanations for the properties that underlie those uses. - Allows the reader to understand how rare earths behave and why they are used in present applications and will be used in future applications. - Explains to the reader where and how rare earths are found and produced and how they are best recycled to minimize environmental impact and energy and water consumption.
Download or read book Synchronous Reluctance Machines written by Nicola Bianchi and published by IET. This book was released on 2021-12-21 with total page 368 pages. Available in PDF, EPUB and Kindle. Book excerpt: The comprehensive reference on synchronous reluctance machines, which offer high power density at low cost and support the electrification in the transport sector. This book, written by top academic and industry experts, covers all topics required to design these machines.
Download or read book Practical Control of Electric Machines for EV HEVs written by Shuiwen Shen and published by Springer Nature. This book was released on 2023-09-01 with total page 337 pages. Available in PDF, EPUB and Kindle. Book excerpt: Upon the ongoing profound revolution in the automotive industry, this book is primarily intended to give guidance on the practical design of traction motor control for pure electric vehicles (EVs) and hybrid electric vehicles (HEVs). An overview of the state-of-the-art motor types is provided to help understanding the background of automotive motor drives and the EV/HEV motor control specifications. Using AC induction motor control as a benchmark example, it addresses the motor control techniques by means of design, analysis, examples with MATLAB scripts wherever applicable, and practical control software architecture diagrams. In particular, an extensive analysis and discussion are made on the widely used vector control method together with multiple optimization schemes. As such, it gives coverage of the electric traction control including dynamics, efficiency, and the high-speed power capability, taking into account the constraints of vehicle configuration and requirements. The vector control and optimization strategies presented in this book can be ported across to other AC motor types without losing much generality. This book tries to bridge the gap between theory and practicality. Beginning with basic motor theory and completing the motor control design by introducing voltage source inverter (VSI) pulse width modulation (PWM) techniques, it helps the reader take a step-by-step approach from understanding fundamental motor characteristics through to practical design of in-depth motor control strategies.
Download or read book Power Electronics and Electric Drives for Traction Applications written by Gonzalo Abad and published by John Wiley & Sons. This book was released on 2016-11-14 with total page 660 pages. Available in PDF, EPUB and Kindle. Book excerpt: Power Electronics and Electric Drives for Traction Applications offers a practical approach to understanding power electronics applications in transportation systems ranging from railways to electric vehicles and ships. It is an application-oriented book for the design and development of traction systems accompanied by a description of the core technology. The first four introductory chapters describe the common knowledge and background required to understand the preceding chapters. After that, each application-specific chapter: highlights the significant manufacturers involved; provides a historical account of the technological evolution experienced; distinguishes the physics and mechanics; and where possible, analyses a real life example and provides the necessary models and simulation tools, block diagrams and simulation based validations. Key features: Surveys power electronics state-of-the-art in all aspects of traction applications. Presents vital design and development knowledge that is extremely important for the professional community in an original, simple, clear and complete manner. Offers design guidelines for power electronics traction systems in high-speed rail, ships, electric/hybrid vehicles, elevators and more applications. Application-specific chapters co-authored by traction industry expert. Learning supplemented by tutorial sections, case studies and MATLAB/Simulink-based simulations with data from practical systems. A valuable reference for application engineers in traction industry responsible for design and development of products as well as traction industry researchers, developers and graduate students on power electronics and motor drives needing a reference to the application examples.
Download or read book Rare Earth Materials written by A.R. Jha and published by CRC Press. This book was released on 2014-06-17 with total page 378 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent studies indicate that China accounts for about 96 percent of the world’s supply of rare earth materials (REMs). With REMs becoming increasingly important for a growing number of high-tech applications, appropriate action must be taken to mitigate the effects of a shortage of critical REMs in defense systems and components. Bringing together information previously available only from disparate journal articles and databases, Rare Earth Materials: Properties and Applications describes the unique characteristics and applications of 17 REMs. It defines their chemical, electrical, thermal, and optical characteristics. Maintaining a focus on physical and chemical properties, it addresses the history and critical issues pertaining to mining and processing of REMs. In this book, Dr. A.R. Jha continues his distinguished track record of distilling complex theoretical physical concepts into an understandable technical framework that can be extended to practical applications across commercial and industrial frameworks. He summarizes the chemical, optical, electrical, thermal, magnetic, and spectroscopic properties of REMs best suited for next-generation commercial and military systems or equipment. Coverage includes extraction, recycling, refinement, visual inspection, identification of spectroscopic parameters, quality control, element separation based on specific application, pricing control, and environmental / geo-political considerations. Potential applications are identified with an emphasis on scientific instruments, nuclear resonance imaging equipment, MRI systems, magnetic couplers for uranium enrichment equipment, battery-electrodes, electric motors, electric generators, underwater sensors, and commercial and military sensors. The book describes unique applications of rare earth magnets in all-electric and hybrid electric cars and microwave components. It also considers the use of rare earth magnets in commercial and military systems where weight and size are the critical design requirements. Suitable for both students and design engineers involved in the development of high-technology components or systems, the book concludes by summarizing future applications in electro-optic systems and components, including infrared lasers, diode-pumped solid-state lasers operating at room temperatures, and other sophisticated military and commercial test equipment
Download or read book Smart Technologies for Power and Green Energy written by Rudra Narayan Dash and published by Springer Nature. This book was released on 2022-09-21 with total page 448 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book is a collection of best selected research papers presented at International Conference on Smart Technology for Power and Green Energy (STPGE 2022), organized by School of Electrical Engineering, KIIT, Deemed to be University, Bhubaneswar, India, during February 12 – 13, 2022. The book discusses recent developments and contemporary research in power electronics and energy.
Download or read book Second International Conference on Electrical Machines Design and Applications 17 19 September 1985 written by and published by . This book was released on 1985 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Automotive Innovation written by Patrick Hossay and published by CRC Press. This book was released on 2019-06-25 with total page 309 pages. Available in PDF, EPUB and Kindle. Book excerpt: Automotive Innovation: The Science and Engineering behind Cutting-Edge Automotive Technology provides a survey of innovative automotive technologies in the auto industry. Automobiles are rapidly changing, and this text explores these trends. IC engines, transmissions, and chassis are being improved, and there are advances in digital control, manufacturing, and materials. New vehicles demonstrate improved performance, safety and efficiency factors; electric vehicles represent a green energy alternative, while sensor technologies and computer processors redefine the nature of driving. The text explores these changes, the engineering and science behind them, and directions for the future.
