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ELECTRICAL MACHINERY
Contents
Chapter-1
Magnetic Circuits and Magnetic Materials
Introduction to Magnetic Circuits
Flux Linkage, Inductance, and Energy
Properties of Magnetic Materials
AC Excitation
Permanent Magnets
Application of Permanent Magnet Materials
Summary
Problems
Chapter 2
Transformers
Introduction to Transformers
No-Load Conditions
Effect of Secondary Current; Ideal Transformer
Transformer Reactances and Equivalent Circuits
Engineering Aspects of Transformer Analysis
Autotransformers; Multiwinding Transformers
Transformers in Three-Phase Circuits
Voltage and Current Transformers
The Per-Unit System
Summary
Problems
Chapter 3
Electromechanical-
Energy-Conversion
Principles
Forces and Torques in Magnetic Field Systems
Energy Balance
Energy in Singly-Excited Magnetic Field Systems
Determination of Magnetic Force and Torque from Energy
Determination of Magnetic Force and Torque from Coenergy
Multiply-Excited Magnetic Field Systems
Forces and Torques in Systems with Permanent Magnets
Dynamic Equations
Analytical Techniques
Summary
Problems
Chapter 4
Introduction to Rotating Machines
Elementary Concepts
Introduction to AC and DC Machines
MMF of Distributed Windings
Magnetic Fields in Rotating Machinery
Rotating MMF Waves in AC Machines
Generated Voltage
Torque in Nonsalient-Pole Machines
Linear Machines
Magnetic Saturation
Leakage Fluxes
Summary
Problems
Chapter 5
Synchronous Machines
Introduction to Polyphase Synchronous Machines
Synchronous-Machine Inductances; Equivalent Circuits
Open- and Short-Circuit Characteristics
Steady-State Power-Angle Characteristics
Steady-State Operating Characteristics
Effects of Salient Poles; Introduction to Direct- and Quadrature-Axis Theory
Power-Angle Characteristics of Salient-Pole Machines
Permanent-Magnet AC Motors
Summary
Problems
Chapter-6
Polyphase Induclion Machines
Introduction to Polyphase Induction Machines
Currents and Fluxes in Polyphase Induction Machines
Induction-Motor Equivalent Circuit
Analysis of the Equivalent Circuit
Torque and Power by Use of Thevenin's Theorem
Parameter Determination from No-Load and Blocked-Rotor Tests
Effects of Rotor Resistance;Wound and Double-Squirrel-Cage Rotors
Summary
Problems
Chapter 7
DC Machines
Introduction
Commutator Action
Effect of Armature MMF
Analytical Fundamentals: Electric-Circuit Aspects
Analytical Fundamentals: Magnetic-Circuit Aspects
Analysis of Steady-State Performance
Permanent-Magnet DC Machines
Commutation and Interpoles
Compensating Windings
Series Universal Motors
Summary
Problems
Chapter 8
Variable-Reluctance Machines and Stepping Motors
Basics of VRM Analysis
Practical VRM Configurations
Current Waveforms for Torque Production
Nonlinear Analysis
Stepping Motors
Summary
Problems
Chapter 9
Single- and Two.Phase Motors
Single-Phase Induction Motors: Qualitative Examination
Starting and Running Performance of Single- Phase Induction and Synchronous Motors
Revolving-Field Theory of Single-Phase Induction Motors
Two-Phase Induction Motors
Summary
Problems
Chapter 10
Introduction to Power Electronics
Power Switches Rectification: Conversion of AC to DC
Inversion: Conversion of DC to AC
Summary
Bibliography
Problems
Chapter-11
Three.Phase Circuits
Generation of Three-Phase Voltages
Three-Phase Voltages, Currents, and Power
Y- and A-Connected Circuits
Analysis of Balanced Three-Phase Circuits; Single-Line Diagrams
Other Polyphase Systems