Electromagnetics For Electrical Machines - Mukerji Saurabh Kumar; Khan Ahmad Shahid; Singh Yatendra Pal | Libro Crc Press 03/2015 - HOEPLI.it


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mukerji saurabh kumar; khan ahmad shahid; singh yatendra pal - electromagnetics for electrical machines

Electromagnetics for Electrical Machines

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Dettagli

Genere:Libro
Lingua: Inglese
Editore:

CRC Press

Pubblicazione: 03/2015
Edizione: 1° edizione





Note Editore

Electromagnetics for Electrical Machines offers a comprehensive yet accessible treatment of the linear theory of electromagnetics and its application to the design of electrical machines. Leveraging valuable classroom insight gained by the authors during their impressive and ongoing teaching careers, this text emphasizes concepts rather than numerical methods, providing presentation/project problems at the end of each chapter to enhance subject knowledge. Highlighting the essence of electromagnetic field (EMF) theory and its correlation with electrical machines, this book: Reviews Maxwell’s equations and scalar and vector potentials Describes the special cases leading to the Laplace, Poisson’s, eddy current, and wave equations Explores the utility of the uniqueness, generalized Poynting, Helmholtz, and approximation theorems Discusses the Schwarz–Christoffel transformation, as well as the determination of airgap permeance Addresses the skin effects in circular conductors and eddy currents in solid and laminated iron cores Contains examples relating to the slot leakage inductance of rotating electrical machines, transformer leakage inductance, and theory of hysteresis machines Presents analyses of EMFs in laminated-rotor induction machines, three-dimensional field analyses for three-phase solid rotor induction machines, and more Electromagnetics for Electrical Machines makes an ideal text for postgraduate-level students of electrical engineering, as well as of physics and electronics and communication engineering. It is also a useful reference for research scholars concerned with problems involving electromagnetics.




Sommario

Foreword Preface Authors Introduction Introduction Field Approach Domain of Machines Review of Field Theory Field Theorems Uniqueness Theorem Poynting Theorem Approximation Theorem Problem of Slotting Eddy Current Phenomena Poly-Phase Induction Machines Laminated Iron Cores Un-Laminated Iron Cores Simulation of Armature Winding Case Studies Numerical Techniques Finite Element Method Analytical Techniques References Review of Field Equations Introduction Maxwell’s Equations in Integral Form Maxwell’s Equations in Point Form General Equations for One Type of Field Maxwell’s Equations for Fields in Moving Media Scalar Electric and Magnetic Potentials Vector Magnetic Potential Periodic Fields, Field Equations in Phasor Form Retarded Potentials Continuity Equation and Relaxation Time A Rear Window View References Theorems, Revisited Introduction Uniqueness Theorem Uniqueness Theorem for Laplace and Poisson Equations Uniqueness Theorem for Vector Magnetic Potentials Uniqueness Theorem for Maxwell’s Equations Helmholtz Theorem Generalised Poynting Theorem Components of Power Flow Components of Force Approximation Theorems Approximation Theorem for Laplacian Field Approximation Theorem for Vector Magnetic Potential Approximation Theorem for Eddy Current Equation References Laplacian Fields Introduction Potential Distribution for Rectangular Double-Slotting Tooth-Opposite-Tooth Orientation Tooth-Opposite-Slot Orientation Arbitrary Orientation of Tooth and Slot Air-Gap Permeance Modelling for Aperiodical Field Distributions Tooth-Opposite-Tooth Orientation Tooth-Opposite-Slot Orientation Arbitrary Orientation of Two Teeth Fringing Flux for Tooth-Opposite-Tooth Orientation with Small Air Gap Schwarz–Christoffel Transformation Air-Gap Field of a Conductor Deep Inside an Open Slot Schwarz–Christoffel Transformation (z-Plane to w-Plane) Magnetic Field near Armature Winding Overhang Surface Current Density Magnetic Field Intensity References Eddy Currents in Magnetic Cores Introduction Eddy Current Machines (Solid Rotor Induction Machines) Two-Dimensional Model Eddy Currents in Large Plates Due to Alternating Excitation Current Single-Phase Excitation Poly-Phase Excitation Eddy Currents in Cores with Rectangular Cross-Sections Eddy Currents in Cores with Triangular Cross-Sections Eddy Currents in Cores with Regular Polygonal Cross-Sections Cores with Triangular Cross-Sections Cores with Hexagonal Cross-Sections Cores with Octagonal Cross-Sections Eddy Currents in Circular Cores Distribution of Current Density in Circular Conductors Eddy Currents in Laminated Rectangular Cores References Laminated-Rotor Polyphase Induction Machines Introduction Two-Dimensional Fields in Anisotropic Media Cage or Wound Rotor Induction Machines Rotor Parameters Induction Machines with Skewed Rotor Slots Air-Gap Field Fields in the Anisotropic Rotor Region Determination of Arbitrary Constants References Un-Laminated Rotor Polyphase Induction Machines Introduction Tooth-Ripple Harmonics in Solid-Rotor Induction Machines Physical Description Field Distribution in Stator Slots Field Distribution in the Air Gap Field Distribution in the Solid Rotor Machine Performances Three-Dimensional Fields in Solid- Rotor Induction Machines Idealised Model Field Distributions Effects of Finite Machine Length Effect of Different Rotor and Stator Lengths Performance Parameters References Case Studies Introduction Slot Leakage Inductance for Conductors in Open Slots Physical Configuration Current Density Distribution Vector Magnetic Potential Flux Density Inductance Leakage Inductance of Transformers Physical Configuration Current Density Distribution Vector Magnetic Potential Magnetic Flux Density Arbitrary Constants Leakage Inductance Field Theory of Hysteresis Machines Simplifying Assumptions Field Distributions Induction Machine Action Hysteresis Machine Action Impact of Different Parameters Single-Phase Induction Motors with Composite Poles Simplifying Assumptions Idealised Machine Structure Field Distribution Transient Fields in Plates Due to Type 2 Impact Excitations Current Impact Excitation Voltage Impact Excitation References Numerical Computation Introduction Numerical Analysis Computational Errors Numerical Stability Domain of Numerical Analysis Values of Functions Equations and Systems of Equations Eigen-Value or Singular Value Problems Optimisation Problem Differential Equations Numerical Integration Software Types of Equations Relations without Summation or Integration Relations Involving Simple Summations Summations Leading to Simultaneous Linear Algebraic Equations Further Reading Appendices Hilbert Transform Evaluation of Integrals Involved in Equations 4.52 and 4.54 Evaluation of Integrals Involved in Equations 4.61 through 4.63 Evaluation of Integrals Involved in Equations 4.76a, 4.82b and 4.83b Evaluation of Arbitrary Constants Involved in Section 5.9 Current Sheet Simulation of Stator Winding




Autore

Saurabh Kumar Mukerji obtained his B.Sc from Aligarh Muslim University (AMU), India, and M.Tech and Ph.D from the Indian Institute of Technology Bombay, Mumbai. He has more than 50 years of teaching experience at Madhav Engineering College, Gwalior, India; AMU; SRMS College of Engineering and Technology, Bareilly, India; Multimedia University, Melaka, Malaysia; and Alfatha University, Misurata, Libya. Currently, he is a senior guest professor at Mangalayatan University, Aligarh, India. He has published more than 40 research papers in various journals and conference proceedings, as well as served on multiple journal review boards and as executive editor with Thomson George Publishing House, Malaysia. Ahmad Shahid Khan has more than 42 years of teaching, research, and administrative experience. He obtained his B.Sc, M.Sc, and Ph.D from Aligarh Muslim University (AMU), India. He is currently a visiting professor at Mewat Engineering College (Wakf) Palla, Nuh, India. Previously, he served at AMU as professor and chairman of the Department of Electronics Engineering, registrar, and estate officer (gazetted). He also served as director of the International Institute of Management and Technology, Meerut, India; director of the Vivekananda College of Technology and Management, Aligarh, India; director of the Jauhar College of Engineering and Technology, Rampur, India; and professor at the Krishna Institute of Engineering and Technology and the Institute of Management Studies, both in Ghaziabad, India. Widely published, he is a recipient of the Pandit Madan Mohan Malviya Memorial Gold Medal. Yatendra Pal Singh has more than 7 years of teaching experience. He obtained his graduate, postgraduate, and Ph.D degrees from Aligarh Muslim University (AMU), India. He is currently working as an assistant professor in the Department of Applied Physics at the Institute of Engineering and Technology, Mangalayatan University, Aligarh, India. He has published more than 25 papers in international conference proceedings and peer-reviewed journals, including the Journal of Geophysical Research, Astronomy & Astrophysics, Solar Physics, Journal of Atmospheric and Solar-Terrestrial Physics, and Planetary and Space Science. Dr. Singh is also a reviewer of research papers for Progress in Electromagnetic Research and Astrophysics and Space Science.







Altre Informazioni

ISBN:

9781498709132

Condizione: Nuovo
Dimensioni: 9.25 x 6.125 in Ø 1.65 lb
Formato: Hardcover
Illustration Notes:52 b/w images and 2 tables
Pagine Arabe: 439






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