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Other titles in the Oxford Series in Electrical and Computer Engineering series:
Electric Machinery and Transformers (Oxford Series in Electrical and Computer Engineering)by Bhag Guru
Synopses & ReviewsPublisher Comments:Designed for junior and seniorlevel courses in electromechanical energy conversion, Electric Machinery and Transformers, 3/e, continues the strong pedagogical tradition established by its successful previous editions. It begins with a review of the fundamentals of circuit theory and electromagnetics and then introduces the concept of electromechanical energy conversion. The text not only provides a systematic development of a model for each electric machine based upon established principles and basic laws, but also introduces students to applications and advanced topics. It also includes information on the construction of each electric machine.
Electric Machinery and Transformers, 3/e, enhances student learning of the basic operating principles of electric machines by using numerous supporting examples, review questions, illustrations, exercises, and chapter summaries. It encourages intuitive reasoning for problemsolving over the rote memorization of equations and procedures. This third edition covers the following main topics: principles of electromechanical energy conversion; transformers; directcurrent generators and motors; synchronous generators and motors; polyphase induction motors and singlephase motors; the dynamics of electric machines; and specialpurpose machines. Synopsis:For this revision of their bestselling junior and seniorlevel text, Guru and Hiziroglu have incorporated eleven years of cuttingedge developments in the field since Electric Machinery and Transformers was first published. Completely rewritten, the new Second Edition also incorporates suggestions from students and instructors who have used the First Edition, making it the best text available for junior and seniorlevel courses in electric machines. The new edition features a wealth of new and improved problems and examples, designed to complement the authors' overall goal of encouraging intuitive reasoning rather than rote memorization of material. Chapter 3, which presents the conversion of energy, now includes: analysis of magnetically coupled coils, induced emf in a coil rotating in a uniform magnetic field, induced emf in a coil rotating in a timevarying magnetic field, and the concept of the revolving field. All problems and examples have been rigorously tested using Mathcad.
About the AuthorRobert DouglasFairhurst is Fellow and Tutor in English at Magdalen College, University of Oxford.
Table of ContentsPreface
Acknowledgments 1 Review of Electric Circuit Theory 1.1. Introduction 1.2. DirectCurrent Ciruit Analysis 1.3. AlternatingCurrent Circuit Analysis 1.4. ThreePhase Circuits 1.5. Power and Impendance Measurements Summary Review Questions Problems 2 Review of Basic Laws of Electromagnetism 2.1. Introduction 2.2. Maxwell's Equations 2.3. Magnetic Materials and Their Properties 2.4. Magnetic Circuits 2.5. Self and Mututal Inductances 2.6. Magnetically Coupled Coils 2.7. Magnetic Losses 2.8. Permanent Magnets Summary Review Questions Problems 3 Principles of Electromechanical Energy Conversion 3.1. Introduction 3.2. Electric Field as a Medium 3.3. Magnetic Field as a Medium 3.4. A Coil in a Uniform Magnetic Field 3.5. A Coil in a TimeVarying Magnetic Field 3.6. Synchronous Motor 3.7. Reluctance Motor 3.8. Electromagnetic Relays Summary Review Questions Problems 4 Transformers 4.1. Introduction 4.2. Construction of a Transformer 4.3. An Ideal Transformer 4.4. A Nonideal Transformer 4.5. Voltage Regulation 4.6. Maximum Efficiency Criterion 4.7. Determination of Transformer Parameters 4.8. PerUnit Computations 4.9. The Autotransformer 4.10. ThreePhase Transformers 4.11. The ConstantCurrent Transformer 4.12. Instrument Transformers Summary Review Questions Problems 5 DirectCurrent Generators 5.1. Introduction 5.2. Mechanical Construction 5.3. Armature Windings 5.4. Induced emf Equation 5.5. Developed Torque 5.6. Magnetization Charateristic of a DC Machine 5.7. Theory of Commutation 5.8. Armature Reaction 5.9. Types of DC Generators 5.10. Voltage Regulation 5.11. Losses in DC Machines 5.12. A Separately Excited DC Generator 5.13. A Shunt Generator 5.14. A Series Generator 5.15. Compound Generators 5.16. Maxiumum Efficiency Criterion Summary Review Questions Problems 6 DirectCurrent Motors 6.1. Introduction 6.2. Operation of a DC Motor 6.3. Speed Regulation 6.4. Losses in a DC Motor 6.5. A Series Motor 6.6. A Shunt Motor 6.7. The Compound Motor 6.8. Methods of Speed Control 6.9. The WardLeonard System 6.10. Torque Measurements 6.11. Braking or Reversing DC Motors Summary Review Questions Problems 7 Synchronous Generators 7.1. Introduction 7.2. Construction of a Synchronous Machine 7.3. Armature Windings 7.4. Pitch Factor 7.5. Distribution Factor 7.6. Winding Connections 7.7. Induced emf Equation 7.8. The Equivalent Circuit 7.9. Power Relationships 7.10. Synchronous Generator Tests 7.11. The External Characteristic 7.12. SalientPole Synchronous Generator 7.13. Parallel Operation of Synchronous Generators Summary Review Questions Problems 8 Synchronous Motors 8.1. Introduction 8.2. Construction and Operation of a Synchronous Motor 8.3. Equivalent Circuit of a Synchronous Motor 8.4. Power Expressions 8.5. Exact Condition for Maximum Power 8.6. Effect of Excitation 8.7. Power Factor Correction Summary Review Questions Problems 9 Polyphase Induction Motors 9.1. Introduction 9.2. Construction 9.3. Principle of Operation 9.4. Development of an Equivalent Circuit 9.5. An Approximate Equivalent Circuit 9.6. Maximym Power Criterion 9.7. Maximum Torque Criterion 9.8. Maximum Efficiency Criterion 9.9. Some Important Conclusions 9.10. Equivalent Circuit Parameters 9.11. Starting of Induction Motors 9.12. Rotor Impedence Transformation 9.13. Speed Control of Induction Motors 9.14. Types of Induction Motors Summary Review Questions Problems 10 SinglePhase Motors 10.1. Introduction 10.2. SingePhase Induction Motor 10.3. Analysis of a SinglePhase Induction Motor 10.4. Types of SinglePhase Induction Motors 10.5. Analysis of a SinglePhase Motor Using Both Windings 10.6. Testing SinglePhase Motors 10.7. ShadedPole Motor 10,8. Universal Motor Summary Review Questions Problems 11 Dynamics of Electric Machines 11.1. Introduction 11.2. DC Machine Dynamics 11.3. Synchronous Generator Dynamics Summary Review Questions Problems 12 SpecialPurpose Electric Machines 12.1. Introduction 12.2. PermanentMagnet Motors 12.3. Step Motors 12.4. SwitchedReluctance Motors 12.5. Brushless DC Motors 12.6. Hystersis Motors 12.7. Linear Induction Motors Summary Review Questions Problems Appendices A System of Units B The Laplace Transform Bibliography Index What Our Readers Are SayingBe the first to add a comment for a chance to win!Product Details
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Engineering » Construction » Heavy Machinery


