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Design of Rotating Electrical Machines, 2nd Edition

Book Description

In one complete volume, this essential reference presents an in-depth overview of the theoretical principles and techniques of electrical machine design. This timely new edition offers up-to-date theory and guidelines for the design of electrical machines, taking into account recent advances in permanent magnet machines as well as synchronous reluctance machines.

New coverage includes:

  • Brand new material on the ecological impact of the motors, covering the eco-design principles of rotating electrical machines
  • An expanded section on the design of permanent magnet synchronous machines, now reporting on the design of tooth-coil, high-torque permanent magnet machines and their properties
  • Large updates and new material on synchronous reluctance machines, air-gap inductance, losses in and resistivity of permanent magnets (PM), operating point of loaded PM circuit, PM machine design, and minimizing the losses in electrical machines>
  • End-of-chapter exercises and new direct design examples with methods and solutions to real design problems>
  • A supplementary website hosts two machine design examples created with MATHCAD: rotor surface magnet permanent magnet machine and squirrel cage induction machine calculations. Also a MATLAB code for optimizing the design of an induction motor is provided

Outlining a step-by-step sequence of machine design, this book enables electrical machine designers to design rotating electrical machines. With a thorough treatment of all existing and emerging technologies in the field, it is a useful manual for professionals working in the diagnosis of electrical machines and drives. A rigorous introduction to the theoretical principles and techniques makes the book invaluable to senior electrical engineering students, postgraduates, researchers and university lecturers involved in electrical drives technology and electromechanical energy conversion.

Table of Contents

  1. Cover Page
  2. Title Page
  3. Copyright Page
  4. Preface
  5. About the Authors
  6. Abbreviations and Symbols
    1. Subscripts
    2. Superscripts
    3. Boldface symbols are used for vectors with components parallel to the unit vectors i, j, and k.
  7. Chapter 1: Principal Laws and Methods in Electrical Machine Design
    1. 1.1 Electromagnetic Principles
    2. 1.2 Numerical Solution
    3. 1.3 The Most Common Principles Applied to Analytic Calculation
    4. 1.4 Application of the Principle of Virtual Work in the Determination of Force and Torque
    5. 1.5 Maxwell’s Stress Tensor; Radial and Tangential Stress
    6. 1.6 Self-Inductance and Mutual Inductance
    7. 1.7 Per Unit Values
    8. 1.8 Phasor Diagrams
    9. Bibliography
  8. Chapter 2: Windings of Electrical Machines
    1. 2.1 Basic Principles
    2. 2.2 Phase Windings
    3. 2.3 Three-Phase Integral Slot Stator Winding
    4. 2.4 Voltage Phasor Diagram and Winding Factor
    5. 2.5 Winding Analysis
    6. 2.6 Short Pitching
    7. 2.7 Current Linkage of a Slot Winding
    8. 2.8 Poly-Phase Fractional Slot Windings
    9. 2.9 Phase Systems and Zones of Windings
    10. 2.10 Symmetry Conditions
    11. 2.11 Base Windings
    12. 2.12 Fractional Slot Windings
    13. 2.13 Single- and Double-Phase Windings
    14. 2.14 Windings Permitting a Varying Number of Poles
    15. 2.15 Commutator Windings
    16. 2.16 Compensating Windings and Commutating Poles
    17. 2.17 Rotor Windings of Asynchronous Machines
    18. 2.18 Damper Windings
    19. Bibliography
  9. Chapter 3: Design of Magnetic Circuits
    1. 3.1 Air Gap and its Magnetic Voltage
    2. 3.2 Equivalent Core Length
    3. 3.3 Magnetic Voltage of a Tooth and a Salient Pole
    4. 3.4 Magnetic Voltage of Stator and Rotor Yokes
    5. 3.5 No-Load Curve, Equivalent Air Gap and Magnetizing Current of the Machine
    6. 3.6 Magnetic Materials of a Rotating Machine
    7. 3.7 Permanent Magnets in Rotating Machines
    8. 3.8 Assembly of Iron Stacks
    9. Bibliography
  10. Chapter 4: Inductances
    1. 4.1 Magnetizing Inductance
    2. 4.2 Leakage Inductances
    3. 4.3 Calculation of Flux Leakage
    4. Bibliography
  11. Chapter 5: Resistances
    1. 5.1 DC Resistance
    2. 5.2 Influence of Skin Effect on Resistance
    3. Bibliography
  12. Chapter 6: Design Process of Rotating Electrical Machines
    1. 6.1 Eco-Design Principles of Rotating Electrical Machines
    2. 6.2 Design Process of a Rotating Electrical Machine
    3. Bibliography
  13. Chapter 7: Properties of Rotating Electrical Machines
    1. 7.1 Machine Size, Speed, Different Loadings and Efficiency
    2. 7.2 Asynchronous Motor
    3. 7.3 Synchronous Machines
    4. 7.4 DC Machines
    5. 7.5 Doubly Salient Reluctance Machine
    6. Bibliography
  14. Chapter 8: Insulation of Electrical Machines
    1. 8.1 Insulation of Rotating Electrical Machines
    2. 8.2 Impregnation Varnishes and Resins
    3. 8.3 Dimensioning of an Insulation
    4. 8.4 Electrical Reactions Ageing Insulation
    5. 8.5 Practical Insulation Constructions
    6. 8.6 Condition Monitoring of Insulation
    7. 8.7 Insulation in Frequency Converter Drives
    8. Bibliography
  15. Chapter 9: Losses and Heat Transfer
    1. 9.1 Losses
    2. 9.2 Heat Removal
    3. 9.3 Thermal Equivalent Circuit
    4. Bibliography
  16. Appendix A: Properties of Magnetic Sheets
  17. Appendix B: Properties of Round Enameled Copper Wires
  18. Index