Electricity And Magnetism.

Book Description

A unique resource for physicists and engineers working with magnetic fields.

An understanding of magnetic phenomena is essential for anyone working on the practical application of electromagnetic theory. Magnetic Fields: A Comprehensive Theoretical Treatise for Practical Use provides physicists and engineers with a thorough treatment of the magnetic aspects of classical electromagnetic theory, focusing on key issues and problems arising in the generation and application of magnetic fields. From magnetic potentials and diffusion phenomena to magnetohydrodynamics and properties of matter-topics are carefully selected for their relevance to the theoretical framework as well as current technologies. Outstanding in its organization, clarity, and scope, Magnetic Fields:

Examines a wide range of practical problems, from magnetomechanical devices to magnetic acceleration mechanisms Opens each chapter with reference to pertinent engineering examples Provides sufficient detail enabling readers to follow the derivation of the results Discusses solution methods and their application to different problems Includes more than 300 graphs, 40 tables, 2,000 numbered formulas, and extensive references to the professional literature Reviews the essential mathematics in the appendices

Book Info

(Wiley-Interscience) Provides readers with an understanding of magnetic phenomena, focusing on key issues and problems associated with classical electromagnetic theory. Features a wide range of practical problems and their solutions, providing engineering examples in every chapter. DLC: Magnetic fields.

About the Author

HEINZ E. KNOEPFEL, PhD, is currently affiliated with the Frascati Research Center of the Italian Agency for New Technologies, Energy, and the Environment (ENEA) in Rome, Italy, and is Director of the School of Fusion Reactor Technology at the "Ettore Majorana" Center for Scientific Culture in Erice, Sicily. During a career that spans decades, he has been involved in important projects at such organizations as the Swiss Federal Institute of Technology, Oak Ridge National Laboratory, and the Massachusetts Institute of Technology, and has published more than 12 books as author or editor.

Table of Contents

• Foundation of Magnetic Field Theory
• Maxwell's Field Equations
• Electromagnetic Field Approximations
• Electrodynamics of Moving Media
• Alternative Electromagnetic Equations
• Boundary Conditions
• Magnetic Potenticals
• Magnetic Scalar Potential
• Magnetic Vector Potential
• Fields in Cylindrical and Straight Conductors
• Inductance of Conductors
• Structure of Magnetic Fields
• Periodic Fields and Wave Phenomena
• Complex Functions
• Sinusoidal and Rotating Electromagnetic Fields
• Wave Phenomena
• Magnetic Field Diffusion and Eddy Currents
• Magnetic Diffusion Theory
• Field Diffusion into Plane Conductors
• Field Diffusion in Cylindrical Geometry
• Eddy Currents
• Diffusion in Electric Circuits
• Electromagnetic and Thermal Energies
• Electromagnetic Energy Equations
• Magnetic Heating in Constant Conductivity Conductors
• Heating in Thin Conductors
• Nonlinear Magnetic Diffusion
• Magnetic Forces and Their Effects
• Electromagnetic Forces
• Magnetic Forces on Rigid Conductors
• Magnetic Propulsion Effects in Conducting Sheets
• Acceleration and Trajectories of Particles
• MagnetoMechanical Stresses
• Stress-Strain Relations and their Limits
• Stress in Solenoidal Magnets
• Stress in Toroidal Magnets
• Force-Free Fields and Current Distributions
• MagnetoHidroDynamics and Properties of Mater
• Magnetohydrodynamic Equations
• Magnetic Flux Compression
• Some Properties of Matter
• Numerical and Analog Solutions Methods
• Numerical Computation Methods
• Approximation by Filamentary or Simple Elemental Conductors
• Analog Methods
• Appendices
• A1. Electromagnetic Units and Equations
• A2. Mathematical Functions
• A3. Coordinate Systems, Vector and Tensor Relations
• A4. Some Solutions of Second-Order Differencial Equations

Book Description

"The Physical Principles of Magnetism . . . is such a classic ? a comprehensive introduction to all aspects of magnetism . . . The corrected reissue is a welcome addition to this much-needed archival series. Dr. Morrish presents an excellent introduction to the physics and mathematics of magnetism without oversimplification . . . This respected and timeless book clearly elucidates these principles."" ? Edward Della Torre, The George Washington University, President of the IEEE Magnetics Society

The IEEE Press is pleased to reissue this essential book for understanding the basis of modern magnetic materials. Diamagnetism, paramagnetism, ferromagnetism, ferrimagnetism, and antiferromagnetism are covered in an integrated manner ? unifying subject matter from physics, chemistry, metallurgy, and engineering. Magnetic phenomena are discussed both from an experimental and theoretical point of view. The underlying physical principles are presented first, followed by macroscopic or microscopic theories. Although quantum mechanical theories are given, a phenomenological approach is emphasized. More than half the book is devoted to a discussion of strongly coupled dipole systems, where the molecular field theory is emphasized.

THE PHYSICAL PRINCIPLES OF MAGNETISM is a classic ?must read? for anyone working in the magnetics, electromagnetics, computing, and communications fields.

About the Author

Allan Henry Morrish is a distinguished professor of physics at the University of Manitoba, Canada. He received a B.Sc. degree from the University of Manitoba in 1943, an M.A. from the University of Toronto in 1946, and a Ph.D. from the University of Chicago in 1949, specializing in nuclear physics. From 1953 to 1964, Dr. Morrish was with the Department of Electrical Engineering at the University of Minnesota at Minneapolis, where he held the rank of professor from 1959.

During 1974-1975, Dr. Morrish was president of the Canadian Association of Physicists and in 1977 he was awarded their gold medal for achievements in physics. He has written over 250 papers and has served on many national and international committees. A fellow of the Royal Society of Canada and a Guggenheim fellow (1957-1958), Dr. Morrish is also a fellow of the Institute of Physics (U.K.), as well as a former fellow of the American Physical Society."

Table of Contents

• The Magnetic Field
• Diamagnetic and Paramagnetic Susceptibilities
• Thermal, Relaxation, and Resonance Phenomena in Paramagnetic Materials
• Nuclear Magnetic Resonance
• The Magnetic Properties of an Electron Gas
• Ferromagnetism
• The Magnetization of Ferromagnetic Material
• Antiferromagnetism
• Ferrimagnetism
• Resonance in Strongly Coupled Dipole Systems
• Appendix I. System of Units
• Appendix II. Demagnetization Factors for Ellipsoids of Revolution
• Appendix III. Periodic Table of the Elements
• Appendix IV. Numerical Values for Some Important Physical Constants

Book Description

In this text the author use the time-independent Maxwell equations as the starting point, the theory is presented on the basis of the Faraday-Maxwell concept of electric and magnetic fields. Here you can find carfully selected and illustrative examples, incorporated in the text. And an excellent collection of problems.

Table of Contents.

• Part 1. Mathematical Introduction.
• 1. Physical Quantities and Properties of Physical Equations.
• 2. Vector Analysis.
• Part II. Electromagnetic Therory.
• 3. Quantitative Investigation of Electric and Magnetic Phenomena.
• 4. Electrostatic Field in Vacuum.
• 5. Electrosatic Potential.
• 6. Special Methods for the Solution of Electrostatic Problems.
• 7. Energy and Force Relations in the Electrostatic Field in Vacuum.
• 8. Electrostatic Field in Material Media.
• 9. Stationary Electric Field in Conducting Media.
• 10. Stationary Magnetic Field in Vacuum.
• 11. Magnetic Potentials.
• 12. Motion of Bodies and Particles in Magnetic and Electric Fields.
• 13. Energy and Force Relations in the Magnetostatic Field in Vacuum.
• 14. Magnetostatic Field in Material Media.
• 15. Maxwell's Equations and Time-Dependent Electric and Magnetic Fields.
• 16. Electromagnetic Waves and Radiation
• Appendix 1. Tables for Conversion of Measurables and Units.
• Appendix 2. Electric and Magnetic Properties of Common Substances.
• Appendix 3. Correct Use of Maxwell's Stress Equations.
• Appendix 4. Method of Equivalent Currents.

Book Description from the Back Cover.

High Technology Motor Design - The First Comple Guide!

This is the first authoritative electromechanics text to focus primarily on building and implementing motors for computer systems, peripherials, and robotics. Hi-Dong Chai - recognized as a leading authority on magnetic actuator design - reviews the state-of-the-art in all aspects of contemporary small-sacle motor design.

Electromechanical motion devices begins with the fundamentals of every motor designer needs to know, including magnetic field theory. Next, the author introduces lumped-magnetic circuit fundamentals that are essential for the design and analysis of all magnetic devices.

Includes extensive examples, exercices, practical tools, and techniques.

Applications include PCs, disk drives, printers, fax machines, and robotics.

Detail coverage of voice coil motors, step motors, and brushless DC motors.

Materials for motion devices: coils, magnetic steel, and permanent magnets.

Transformer and dc machines - including the use of transformer in power supplies and as isolation devices.

Understand the digitally-controlled precision motion devices used most often in the information industries: voice coil motors for positioning read/write heads in disk drives; step motors for discrete positioning applications; and brushless dc ( BLDC ) motors that are increasingly used in applications requiring a uniform speed in a well-controlled environment.

Table of Contents.

• 1. Magnetic Fields.
• 2. Fundamentals of Lumped Circuits. ( Magnetic Circuits )
• 3. Transformers.
• 4. DC Machines.
• 5. Voice-Coil Motors.
• 6. Step Motors.
• 7. Brushless DC Motors.
• 8. Materials for Magnetic Devices.
• Appendix A.

Electric Electronic Circuit and System Simulation . Electric/Electronic Circuit Simulation Software.

Book Description from the Backcover.

Everything you need to use MATLAB and SIMULINK for Interactive Modeling.

With today's personal computers, students and professionals have the power to create simulations of electric machinery that allow them to study transient and control performance and test conceptual designs. The outcome of these simulations can revel behaviors that may not have been readily apparent from the theory and design of the machines.

This book and its accompanying CD-ROM offer a complete treatment from background theory and models to implementation and verification techniques for simulations and linear analysis of frequently studied machine systems. They include:

• Single- and three-phase transformers, modeling of core saturation.
• Single- and three-phase induction machines.
• Three- and six-phase synchronous machines, wound and permanent magnet field.
• DC machines: four quadrant drive operation, starting, speed and torque control.
• Induction machine drive: volts/hertz control and field-oriented control.
• Synchronous machines in power system studies: multi-machine system.
• Shafts torsionals, excitation control, synchronous machine drives: self-control and permanent magnet field).

Every chapter of Dynamic Simulation of Electric Machinery includes exercises and projects that can be explored using the accompayning software. A full chapter is devoted to the use of MATLAB and SIMULINK, and an appendix provides a convenient overview of key numerical methods used.

Dynamic Simulation of Electric Machinery provides professional engineers and students with a complete tollkit of modeling and analyzing power systems on their desktop computers.

About the Author

Dr. Chee-Mun Ong is a professor of Electrical Engineering ar Purdue University in West Lafayette, Indiana.

Tanble of Contents

• 1. Introduction.
• 2. Introduction to MATLAB/SIMULINK.
• 3. Basics on Magnetics and Line Modeling.
• 4. Transformers.
• 5. Basics of Electric Machines and Transformations.
• 6. Three-Phase Induction Machines.
• 7. Synchronous Machines.
• 8. DC Machines.
• 9. Control of Induction Machines.
• 10. Synchronous Machines in Power Systems and Drives.
• Appendix A: Numerical Methods.
• Appendix B: CD-ROM.
• Bibliography.

CD ROM included with a complete treatment from background theory and models to implementation and verification techniques for simulations and linear analisys.

This book includes the finite element method software named PhysicSolver, with this software we can solve problems of Electrostatics and Magnetostatics in planar and cylindrical geometries.

Chapter I. Historical perspectives of Electromagnetism.

Chapters II and III. Relativistic kinematics and dynamics, with experiments, which help understand the properties of space-time. Aspects of the electromagnetic field in vacuum.

Chapters IV through VIII. Properties of the electric charge and of the electrostatic field, the solutions of Laplace and Poisson equations, including numerical methods, the laws of Ampere and Biot-Savart and multipole expansions. The complete Maxwell equations, the concepts of electromagnetic energy, a clear discussion of the symmetry properties and conservation laws associated with Maxwell equations and the properties of radiation fields are also discussed.

Book Description

The focus of this book is on the interactions of small particles, in the size range of microns to millimeters, with electric or magnetic fields. This field has particularly useful practical applications, for instance in photocopier technology and lately in the characterization and manipulation of cells and DNA molecules. The author's objective is to bring together diverse examples of field-particle interactions from many areas of science and technology and then to provide a framework for understanding their common electromechanical phenomena. Using examples from dielectrophoresis, magnetic brush xerography, electrorheology, cell electrorotation, and particle chain rotation, Professor Jones introduces a general model--the effective dipole method--to build a set of predictive models for the forces and torques responsible for the important electromechanical effects. In the last part of the book, the author covers the ubiquitous phenomenon of particle chaining. This book will be highly useful to material engineers and scientists, chemists, and biologists who work with particles, powders, or granular materials.

Table of Contents.

• Introduction.
• Fundamentals.
• Dielectrophoresis and magnetophoresis.
• Particle rotation.
• Orientation of nonspherical particles.
• Theory of particle chains.
• Force interactions between particles.
• Appendix A: Analogies between electrostatic, conduction and magnetostatic problems.
• Appendix B: Review of linear multipoles.
• Appendix C: Models for layered spherical particles.
• Appendix D: Transient response of ohmic dielectric sphere to a suddenly applied DC electric field.
• Appendix E: Realtionship of DEP and ROT spectra.
• Appendix F: General multipolar theory.
• Appendic G: Induced effective moment of dielectric allipsoid.
• References.

Book Description

This comprehensive introduction to electromechanical devices and their underlying principles of operation gives technicians of manufacturing and processign systems the unified treatment of mechanical and electrical topics so much in demand in today's workplace. Practical, hands-on information related to operating, installing, troubleshooting, and servicing a wide range of electromechanical systems is presented. Chapter topics cover number notation, measurement, and units; linear motion; principles of simple machines and the lever; pulleys, wheel and axle, and the inclined plane; friction, lubrication, and bearings; work, energy, torque, and power; rotational power transmission; rotation, translation, and intermittent motion devices; the electric circuit; electromagnetic circuits and devices; transformers and power distribution; overcurrent protection; sequential process control; alternating current electric motors; direct-current motors and ac drives; and concepts of automatic control systems. A self-paced study guide for employed technicians and maintenance engineers working independently to upgrade themselves. --This text refers to the Hardcover edition.

The publisher, Prentice-Hall Career & Technology

A comprehensive introduction to electromechanical devices and their underlying principles of operation, one that gives students the unified treatment of mechanical and electrical topics so much in demand in today's workplace. Practical, hands-on information related to operating, installing, troubleshooting, and servicing a wide range of electromechanical systems is presented. Graded, self-paced chapters progress through mechanical, electrical, and magnetic concepts and principles; to their actual applications in a wide range of electromechanical devices. Numerous examples are presented throughout the text, together with a wealth of problem-solving techniques.

Table of Contents

• Number Notation, Measurement and Units
• Linear Motion
• Principles of Simple Machines and the Lever
• The Pulley, Wheel and Axle, and Inclined Plane
• Frinction, Lubrication, and Bearings
• Work, Energy, Torque, and Power
• Rotational Power Transmission
• Rotation, Translation, and Intermittent Motion Devices
• Electric Circuit
• Electromagnetic Circuits and Devices
• Transformers and Power Distribution
• Overcurrent Protection
• Squential Process Control
• Alternating-Current Electric Motors
• Direct-Current Motors
• Glossary of Selected Technical Terms, Abbreviations, and Acronyms