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Electric Motors and Drives

Electric Motors and Drives
Fundamentals, Types and Applications

by Austin Hughes,Bill Drury

  • Publisher : Newnes
  • Release : 2013-02-20
  • Pages : 440
  • ISBN : 0080993680
  • Language : En, Es, Fr & De
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Electric Motors and Drives is intended for non-specialist users of electric motors and drives, filling the gap between maths- and theory-based academic textbooks and the more prosaic 'handbooks', which provide useful detail but little opportunity for the development of real insight and understanding. The book explores all of the widely-used modern types of motor and drive, including conventional and brushless D.C., induction motors and servo drives, providing readers with the knowledge to select the right technology for a given job. The third edition includes additional diagrams and worked examples throughout. New topics include digital interfacing and control of drives, direct torque control of induction motors and current-fed operation in DC drives. The material on brushless servomotors has also been expanded. Austin Hughes' approach, using a minimum of maths, has established Electric Motors and Drives as a leading guide for electrical engineers and mechanical engineers, and the key to a complex subject for a wider readership, including technicians, managers and students. Acquire knowledge of and understanding of the capabilities and limitations of motors and drives without struggling through unnecessary maths and theory Updated material on the latest and most widely-used modern motors and drives, including brushless servomotors New edition includes additional diagrams and worked examples throughout

Electric Motors and Drives

Electric Motors and Drives
Fundamentals, Types and Applications

by Austin Hughes

  • Publisher : Elsevier
  • Release : 2005-12-14
  • Pages : 384
  • ISBN : 9780080522043
  • Language : En, Es, Fr & De
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Electric Motors and Drives is intended for non-specialist users of electric motors and drives, filling the gap between theory-based academic textbooks and the more prosaic 'handbooks', which provide useful detail but little opportunity for the development of real insight and understanding. The book explores all of the widely-used modern types of motor and drive, including conventional and brushless D.C., induction motors and servo drives, providing readers with the knowledge to select the right technology for a given job. Austin Hughes' approach, using a minimum of maths, has established Electric Motors and Drives as a leading guide for engineers, and the key to a complex subject for a wider readership, including technicians, managers and students. Acquire essential practical knowledge of motors and drives, with a minimum of math and theory Updated material on the latest and most widely-used modern motors and drives New edition includes additional diagrams and worked examples throughout

Electric Motors And Drives

Electric Motors And Drives
Fundamentals, Types And Applications: Electric Motors Physics

by Sheena Leith

  • Publisher : Unknown Publisher
  • Release : 2021-03-18
  • Pages : 50
  • ISBN : 9876543210XXX
  • Language : En, Es, Fr & De
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What is an electric motor and how does it work? Electricity Of Generator Which electric motor is best? Electric Stove Uses An Electric Motor What are an electric motor and its types? Electric Motor Diagram How much does an electric motor cost? This book completes with circuit diagrams and thorough explanations of the most common motor starting methods - and challenges. It has something to offer anyone keen to learn new things, while at the same time assisting practicing electrical engineers to design and implement reliable and functional motor starters.

Electric Motors and Drives, 5th Edition

Electric Motors and Drives, 5th Edition
A Book

by Austin Hughes,Bill Drury

  • Publisher : Unknown Publisher
  • Release : 2019
  • Pages : 511
  • ISBN : 9876543210XXX
  • Language : En, Es, Fr & De
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Electric Motors and Drives: Fundamentals, Types and Applications, Fifth Edition is intended primarily for non-specialist users or students of electric motors and drives, but many researchers and specialist industrialists have also acknowledged its value in providing a clear understanding of the fundamentals. It bridges the gap between specialist textbooks (too analytical for the average user) and handbooks (full of detail but with little insight) providing an understanding of how each motor and drive system works. The fifth edition has been completely revised, updated and expanded. All of the most important types of motor and drive are covered, including d.c., induction, synchronous (including synchronous reluctance and salient Permanent Magnet), switched reluctance, and stepping. There has been significant innovation in this area since the fourth edition, particularly in the automotive, aircraft and industrial sectors, with novel motor topologies emerging, including hybrid designs that combine permanent magnet and reluctance effects. We now include a physical basis for understanding and quantifying torque production in these machines, and this leads to simple pictures that illuminate the control conditions required to optimise torque. The key converter topologies have been brought together, and the treatment of inverter switching strategies expanded. A new chapter is devoted to the treatment of Field Oriented control, reflecting its increasing importance for all a.c. motor drives. A unique physically-based approach is adopted which builds naturally on the understanding of motor behaviour developed earlier in the book: the largely non-mathematical treatment dispels much of the mystique surrounding what is often regarded as a difficult topic. Helps users acquire knowledge and understanding of the capabilities and limitations of motors and drives without struggling through unnecessary math and theory Presents updated material on the latest and most widely-used motors and drives, including brushless servo motors Includes additional diagrams and worked examples throughout this updated edition Includes a physical basis for the understanding and quantifying torque production.

Energy-Efficient Electric Motors and their Applications

Energy-Efficient Electric Motors and their Applications
A Book

by H.E. Jordan

  • Publisher : Springer Science & Business Media
  • Release : 2013-06-29
  • Pages : 188
  • ISBN : 148991465X
  • Language : En, Es, Fr & De
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In this revised and expanded edition, Howard E. Jordan explains-in a clear manner-the technology of energy efficient electric motors including motor losses, testing, and efficiency labeling. He also discusses how to calculate the return on investment for an energy efficient motor in addition to several other subjects related to effective motor applications. New chapters explore permanent magnet synchronous motors and transistor pulse-width-modulated inverters. Engineers, purchasing managers, and executives who make decisions on motor selection will find this an invaluable reference.

Electric Motor Drives, 1/e

Electric Motor Drives, 1/e
A Book

by Rajini,Nagarajan

  • Publisher : Pearson Education India
  • Release : 2001
  • Pages : 649
  • ISBN : 9353941334
  • Language : En, Es, Fr & De
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Electric motor drives aim to provide an in-depth understanding of the working of various types of electrical motor drives. The text is spread across twenty chapters under the five broad clusters, namely electric motor drive characteristics, DC motor drives, AC motor drives, special motor drives and industrial drive applications. Matlab programs and psim simulations featured in the text aids in determining the characteristics of electric motor drives and machines and offers a profound new perspective in the design of power electronic circuits and controllers for electric motors.

Control of Electric Motors and Drives Via Convex Optimization

Control of Electric Motors and Drives Via Convex Optimization
A Book

by Nicholas Moehle

  • Publisher : Unknown Publisher
  • Release : 2018
  • Pages : 329
  • ISBN : 9876543210XXX
  • Language : En, Es, Fr & De
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Electric motors and drives have been in common use for more than a century. Traditionally, alternating-current electric motors are driven by applying symmetric, multiphase sinusoidal voltage waveforms to their terminals. However, due to the wide availability of switching power converters as well as microcontrollers for controlling them, it is now possible to drive motors using specialized, nonsinusoidal waveforms, allowing us to design the drive voltage waveform along with the motor. This is one of our main points in this work: techniques and technologies now exist for controlling unconventional electric motors. We first consider optimal voltage and current waveform design for electric motors, then considers the design of feedback controllers for switched-mode power converters that could be used to implement these waveforms. First we give energy-optimal current waveforms for a permanent magnet synchronous motor that result in a desired average torque. Our formulation generalizes previous work by including a general back-EMF wave shape, voltage and current limits, an arbitrary phase winding connection, a simple eddy current loss model, and a trade-off between power loss and torque ripple. Determining the optimal current waveforms requires solving a convex optimization problem. We show how to use the alternating direction method of multipliers to find the optimal current in milliseconds or hundreds of microseconds, depending on the processor used, which allows the possibility of generating optimal waveforms in real time. We next present a method for finding current waveforms for induction motors that minimize resistive loss while achieving a desired average torque output. Our method is not based on reference-frame theory for electric machines, and therefore directly handles induction motors with asymmetric winding patterns, nonsinusoidally distributed windings, and a general winding connection. We do not explicitly handle torque ripple or voltage constraints. Our method is based on converting the torque control problem to a nonconvex linear-quadratic control problem, which can be solved by using a (tight) semidefinite programming relaxation. We then address the problem of finding current waveforms for a switched reluctance motor that minimize a user-defined combination of torque ripple and RMS current. The motor model we use is fairly general, and includes magnetic saturation, voltage and current limits, and highly coupled magnetics (and therefore, unconventional geometries and winding patterns). We solve this problem by approximating it as a mixed-integer convex program, which we solve globally using branch and bound. We demonstrate our approach on an experimentally verified model of a fully pitched switched reluctance motor, for which we find the globally optimal waveforms, even for high rotor speeds. After considering the motor design problem, we consider control of switched-mode power electronic converters. First we consider the theoretical problem of controlling general switched-affine dynamical systems i.e., the problem of selecting a sequence of affine dynamics from a finite set in order to minimize a sum of convex functions of the system state. We develop a new reduction of this problem to a mixed-integer convex program (MICP), based on perspective functions. Relaxing the integer constraints of this MICP results in a convex optimization problem, whose optimal value is a lower bound on the original problem value. We show that this bound is at least as tight as similar bounds obtained from two other well-known MICP reductions (via conversion to a mixed logical dynamical system, and by generalized disjunctive programming), and our numerical study indicates it is often substantially tighter. Finally, we consider the problem of controlling switched-mode power converters using model predictive control. Model predictive control requires solving optimization problems in real time, limiting its application to systems with small numbers of switches and a short horizon. We propose a technique for using off-line computation to approximate the model predictive controller. This is done by dividing the planning horizon into two segments, and using a quadratic function to approximate the optimal cost over the second segment. The approximate model predictive algorithm minimizes the true cost over the first segment, and the approximate cost over the second segment, allowing the user to adjust the computational requirements by changing the length of the first segment. We conclude with two simulated examples.

Energy Efficiency Improvements in Electric Motors and Drives

Energy Efficiency Improvements in Electric Motors and Drives
A Book

by Anibal de Almeida,Paolo Bertoldi,Werner Leonhard

  • Publisher : Springer Science & Business Media
  • Release : 2012-12-06
  • Pages : 511
  • ISBN : 3642608329
  • Language : En, Es, Fr & De
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The reduction of energy consumption through improvements in energy efficiency has become an important goal for all countries, in order to improve the efficiency of the economy, to increase energy supply security, and to reduce the emissions of CO and other pollutants caused by power· generation. 2 Electric motors use over half of all electricity consumed in developed countries. Typically 60-80% of the electricity which is used in the industrial sector and about 35% of the electricity used in the commercial sector in the European Union is consumed by motors. In industry, a motor consumes an annual quantity of electricity which corresponds to approximately 5 times its purchase price, throughout its whole life of aroun~ 12 to 20 years. Motors are by far the most important type of electric load. They are used in all sectors and in a wide range of applications, namely the following: fans, compressors, pumps, mills, winders, elevators, transports, home appliances, and office equipment, etc. It is their wide use that makes motor drive systems one of the main targets to achieve significant energy savings. As motors are the largest USers of electrical energy, even small efficiency improvements will produce very large energy savings.

Electric Drives and Electromechanical Systems

Electric Drives and Electromechanical Systems
Applications and Control

by Richard Crowder

  • Publisher : Elsevier
  • Release : 2006-02-02
  • Pages : 312
  • ISBN : 9780080492643
  • Language : En, Es, Fr & De
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The focus of this book on the selection and application of electrical drives and control systems for electromechanical and mechatronics applications makes it uniquely useful for engineers in industry working with machines and drives. It also serves as a student text for courses on motors and drives, and engineering design courses, especially within mechanical engineering and mechatronics degree programs. The criteria for motor-drive selection are explained, and the main types of drives available to drive machine tools and robots introduced. The author also provides a review of control systems and their application, including PLCs and network technologies. The coverage of machine tools and high-performance drives in smaller applications makes this a highly practical book focused on the needs of students and engineers working with electromechanical systems. * An invaluable survey of electric drives and control systems for electromechanical and mechatronics applications * Essential reading for electrical and mechanical engineers using motors and drives * An ideal electric motors and drives text for university courses including mechatronics

Practical Electric Motor Handbook

Practical Electric Motor Handbook
A Book

by Irving Gottlieb

  • Publisher : Elsevier
  • Release : 1997-08-21
  • Pages : 220
  • ISBN : 9780080514390
  • Language : En, Es, Fr & De
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Experienced product designers are increasingly expected to be adept at incorporating a range of components into their designs. Students and experimenters too need to look beyond basic circuits and devices to achieve adequate design solutions. For those experienced in engineering design, this is the guide to electric motors. This book will allow engineers and designers to marry the technologies they know about with motor technology, and hence to incorporate motors into their products. Of the many good books on motors, such as Electric Motors and Drives by Hughes, none offer the engineering professional a tailored guide to motors taking into account their expertise. This book fills that gap. Irving Gottlieb is a leading author of many books for practising engineers, technicians and students of electronic and electrical engineering. Practical approach with minimum theory Covers a core area ignored by many electronics texts Shows how to incorporate motors into electronic products

Power Electronics and Motor Drives

Power Electronics and Motor Drives
A Book

by Bogdan M. Wilamowski,J. David Irwin

  • Publisher : CRC Press
  • Release : 2018-10-03
  • Pages : 1015
  • ISBN : 1439802866
  • Language : En, Es, Fr & De
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The Industrial Electronics Handbook, Second Edition combines traditional and newer, more specialized knowledge that will help industrial electronics engineers develop practical solutions for the design and implementation of high-power applications. Embracing the broad technological scope of the field, this collection explores fundamental areas, including analog and digital circuits, electronics, electromagnetic machines, signal processing, and industrial control and communications systems. It also facilitates the use of intelligent systems—such as neural networks, fuzzy systems, and evolutionary methods—in terms of a hierarchical structure that makes factory control and supervision more efficient by addressing the needs of all production components. Enhancing its value, this fully updated collection presents research and global trends as published in the IEEE Transactions on Industrial Electronics Journal, one of the largest and most respected publications in the field. Power Electronics and Motor Drives facilitates a necessary shift from low-power electronics to the high-power varieties used to control electromechanical systems and other industrial applications. This volume of the handbook: Focuses on special high-power semiconductor devices Describes various electrical machines and motors, their principles of operation, and their limitations Covers power conversion and the high-efficiency devices that perform the necessary switchover between AC and DC Explores very specialized electronic circuits for the efficient control of electric motors Details other applications of power electronics, aside from electric motors—including lighting, renewable energy conversion, and automotive electronics Addresses power electronics used in very-high-power electrical systems to transmit energy Other volumes in the set: Fundamentals of Industrial Electronics Control and Mechatronics Industrial Communication Systems Intelligent Systems

Electric Motor Drive Installation and Troubleshooting

Electric Motor Drive Installation and Troubleshooting
A Book

by Glen Mazur,William J. Weindorf

  • Publisher : Ingram
  • Release : 2008-04-01
  • Pages : 501
  • ISBN : 9780826912527
  • Language : En, Es, Fr & De
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This newly revised edition presents the latest information on electric motors and motor drives in industry. It provides an overview of electric motor and drive theory, applications, installation, and troubleshooting. Specific topics covered include safety, drive programming, motor drive selection for specific applications, testing and start-up procedures. A wide spectrum of manufacturers and practical applications are represented in the text. Review questions and activities at the end of the each chapter provide a variety of assessment opportunities.

Fundamentals of Electrical Drives

Fundamentals of Electrical Drives
A Book

by G. K. Dubey

  • Publisher : CRC Press
  • Release : 2002-05
  • Pages : 408
  • ISBN : 9780849324222
  • Language : En, Es, Fr & De
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Encouraged by the response to the first edition and to keep pace with recent developments, Fundamentals of Electrical Drives, Second Edition incorporates greater details on semi-conductor controlled drives, includes coverage of permanent magnet AC motor drives and switched reluctance motor drives, and highlights new trends in drive technology. Contents were chosen to satisfy the changing needs of the industry and provide the appropriate coverage of modern and conventional drives. With the large number of examples, problems, and solutions provided, Fundamentals of Electrical Drives, Second Edition will continue to be a useful reference for practicing engineers and for those preparing for Engineering Service Examinations.

Electrical Machines and Drives

Electrical Machines and Drives
A Book

by J. D. Edwards

  • Publisher : Macmillan International Higher Education
  • Release : 1991-05-10
  • Pages : 249
  • ISBN : 1349213136
  • Language : En, Es, Fr & De
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This book gives a thoroughly up-to-date account of the principles of electrical machines and drives in a form accessible to the non-specialist. At the same time, it provides sound groundwork for more advanced studies. It wil be of particular value as an introductory textbook for students of electrical and electronic engineering. It features a novel approach to the treatment of classical AC machines based on the concepts of current density and flux density, together with a thorough treatment of the new non-classical electronically commutated machines. Worked examples and problems for solution are included.

Energy savings with electric motors and drives

Energy savings with electric motors and drives
A Book

by Doug Warne

  • Publisher : Unknown Publisher
  • Release : 1998
  • Pages : 46
  • ISBN : 9876543210XXX
  • Language : En, Es, Fr & De
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Energy Efficiency in Electric Motors, Drives, Power Converters and Related Systems

Energy Efficiency in Electric Motors, Drives, Power Converters and Related Systems
A Book

by Mario Marchesoni

  • Publisher : MDPI
  • Release : 2020-06-25
  • Pages : 248
  • ISBN : 3039363905
  • Language : En, Es, Fr & De
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Today, there is a great deal of attention focused on sustainable growth worldwide. The increase in efficiency in the use of energy may even, in this historical moment, bring greater benefit than the use of renewable energies. Electricity appears to be the most sustainable of energies and the most promising hope for a planet capable of growing without compromising its own health and that of its inhabitants. Power electronics and electrical drives are the key technologies that will allow energy savings through the reduction of energy losses in many applications. This Special Issue has collected several scientific contributions related to energy efficiency in electrical equipment. Some articles are dedicated to the use and optimization of permanent magnet motors, which allow obtaining the highest level of efficiency. Most of the contributions describe the energy improvements that can be achieved with power electronics and the use of suitable control techniques. Last but not least, some articles describe interesting solutions for hybrid vehicles, which were created mainly to save energy in the smartest way possible.

Electrical Machine Drives Control

Electrical Machine Drives Control
An Introduction

by Juha Pyrhonen,Valeria Hrabovcova,R. Scott Semken

  • Publisher : John Wiley & Sons
  • Release : 2016-11-14
  • Pages : 524
  • ISBN : 1119260450
  • Language : En, Es, Fr & De
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This comprehensive text examines existing and emerging electrical drive technologies. The authors clearly define the most basic electrical drive concepts and go on to explain the most important details while maintaining a solid connection to the theory and design of the associated electrical machines. Also including links to a number of industrial applications, the authors take their investigation of electrical drives beyond theory to examine a number of practical aspects of electrical drive control and application. Key features: * Provides a comprehensive summary of all aspects of controlled-speed electrical drive technology including control and operation. * Handling of electrical drives is solidly linked to the theory and design of the associated electrical machines. Added insight into problems and functions are illustrated with clearly understandable figures. * Offers an understanding of the main phenomena associated with electrical machine drives. * Considers the problem of bearing currents and voltage stresses of an electrical drive. * Includes up-to-date theory and design guidelines, taking into account the most recent advances. This book’s rigorous coverage of theoretical principles and techniques makes for an excellent introduction to controlled-speed electrical drive technologies for Electrical Engineering MSc or PhD students studying electrical drives. It also serves as an excellent reference for practicing electrical engineers looking to carry out design, analyses, and development of controlled-speed electrical drives.

Control of Electrical Drives

Control of Electrical Drives
A Book

by Werner Leonhard

  • Publisher : Springer Science & Business Media
  • Release : 2001-08-10
  • Pages : 460
  • ISBN : 9783540418207
  • Language : En, Es, Fr & De
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Electrical drives play an important role as electromechanical energy convert ers in transportation, material handling and most production processes. The ease of controlling electrical drives is an important aspect for meeting the in creasing demands by the user with respect to flexibility and precision, caused by technological progress in industry as well as the need for energy conser vation. At the same time, the control of electrical drives has provided strong incentives to control engineering in general, leading to the development of new control structures and their introduction to other areas of control. This is due to the stringent operating conditions and widely varying specifications - a drive may alternately require control of torque, acceleration, speed or position - and the fact that most electric drives have - in contrast to chem ical or thermal processes - well defined structures and consistent dynamic characteristics. During the last years the field of controlled electrical drives has undergone rapid expansion due mainly to the advances of semiconductors in the form of power electronics as well as analogue and digital signal electronics, eventu ally culminating in microelectronics and microprocessors. The introduction of electronically switched solid-state power converters has renewed the search for adjustable speed AC motor drives, not subject to the limitations of the mechanical commutator of DC drives which dominated the field for a century.

Electrical Machines and Drives

Electrical Machines and Drives
Worked Examples

by John Hindmarsh

  • Publisher : Pergamon
  • Release : 1985
  • Pages : 350
  • ISBN : 9876543210XXX
  • Language : En, Es, Fr & De
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Switched Reluctance Motor Drives

Switched Reluctance Motor Drives
Fundamentals to Applications

by Berker Bilgin,James Weisheng Jiang,Ali Emadi

  • Publisher : CRC Press
  • Release : 2019-04-29
  • Pages : 794
  • ISBN : 1351396722
  • Language : En, Es, Fr & De
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Electric motors are the largest consumer of electric energy and they play a critical role in the growing market for electrification. Due to their simple construction, switched reluctance motors (SRMs) are exceptionally attractive for the industry to respond to the increasing demand for high-efficiency, high-performance, and low-cost electric motors with a more secure supply chain. Switched Reluctance Motor Drives: Fundamentals to Applications is a comprehensive textbook covering the major aspects of switched reluctance motor drives. It provides an overview of the use of electric motors in the industrial, residential, commercial, and transportation sectors. It explains the theory behind the operation of switched reluctance motors and provides models to analyze them. The book extensively concentrates on the fundamentals and applications of SRM design and covers various design details, such as materials, mechanical construction, and controls. Acoustic noise and vibration is the most well-known issue in switched reluctance motors, but this can be reduced significantly through a multidisciplinary approach. These methodologies are explained in two chapters of the book. The first covers the fundamentals of acoustic noise and vibration so readers have the necessary tools to analyze the problems and explains the surface waves, spring-mass models, forcing harmonics, and mode shapes that are utilized in modeling and analyzing acoustic noise and vibration. The second applies these fundamentals to switched reluctance motors and provides examples for determining the sources of any acoustic noise in switched reluctance motors. In the final chapter two SRM designs are presented and proposed as replacements for permanent magnet machines in a residential HVAC application and a hybrid-electric propulsion application. It also shows a high-power and compact converter design for SRM drives. Features: Comprehensive coverage of switched reluctance motor drives from fundamental principles to design, operation, and applications A specific chapter on electric motor usage in industrial, residential, commercial, and transportation applications to address the benefits of switched reluctance machines Two chapters address acoustic noise and vibration in detail Numerous illustrations and practical examples on the design, modeling, and analysis of switched reluctance motor drives Examples of switched reluctance motor and drive design