With numerous chapter problems and worked-out examples, this book presents a general introduction to electric machines, including their rating and certain economic considerations. Using a tradition presentation, the author includes a discussion of magnetic circuits and transformers, conventional dc, induction and synchronous machines. He closes with coverage of dynamics of electromechanical systems and incremental-motion electromechanical systems.
Sprache
Verlagsort
Zielgruppe
Für höhere Schule und Studium
Gewicht
ISBN-13
978-0-89116-991-8 (9780891169918)
Copyright in bibliographic data is held by Nielsen Book Services Limited or its licensors: all rights reserved.
Schweitzer Klassifikation
INTRODUCTION
Types of Rotating Machines
Efficiency, Energy, and Losses
Methods of Analysis
Ratings and Limitations on Electric Machines
Economic Considerations
References
MAGNETIC CIRCUITS AND TRANSFORMERS
Review of Electromagnetic Field Theory
Magnetic Materials
Magnetic Losses
Magnetic Circuits
Ampere's Law Applied to a Magnetic Circuit
Differences Between Magnetic and Electronic Circuits
Faraday's Law and Induced Voltage
Energy Relations in a Magnetic Field
Inductance
Transformers
References
Problems
DC MACHINES
The Faraday Disk and Faraday's Law
The Heteropolar of Conventional DC Machine
Constructional Details
Classification According to Forms of Excitation
Performance Equations
Amature Reaction
Reactance Voltage and Commutation
Voltage Buildup in a Shunt Generator
Generator Characteristics
Motor Characteristics
Starting and Control of Motors
Losses of Efficiency
Tests on DC Machines
References
Problems
SYNCHRONOUS MACHINES
Some Construction Details
Magnetomotive Forces and Fluxes Due to Amature and Field Windings
Synchronous Speed
Synchronous Generator Operations
Synchronous Motor Operation
Certain Realistic Considerations
Operating Characteristics of a Synchronous Machine
Salient Pole Synchronous Machines
References
Problems
INDUCTION MACHINES
Operation of a Three-Phase Induction Motor
Slip
Development of Equivalent Circuits
Performance Calculations
Approximate Equivalent Circuit From Test Data
Performance Criteria of Induction Motors
Speed Control of Induction Motors
Starting of Induction Motors
Induction Generators
Single-Phase Induction Motors
References
Problems
ELECTROMECHANICAL SYSTEMS
Mechanical Forces Due to Magnetic Fields
Energy Conservation and Energy Conversion
The Force Equation
Current and Flux Variations
Dynamics of Electromechanical Systems
Electrical Equivalent Circuits
Doubly and Multiply Excited Systems
Instantaneous, Average, and Root-Mean-Square Values of Forces
References
Problems
Appendix I: Unit Conversion
Appendix II: Magnet Wire Table for Single Film-Coated Round Wire
Index
