Electric Machines and Drives

ISBN-10: 1118074815
ISBN-13: 9781118074817
Edition: 2012
Authors: Ned Mohan
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Book details

List price: $164.99
Copyright year: 2012
Publisher: John Wiley & Sons, Limited
Publication date: 1/31/2012
Binding: Hardcover
Pages: 288
Size: 7.00" wide x 10.00" long x 0.50" tall
Weight: 1.540
Language: English

Preface
Introduction to Electric Drive Systems
History
What Is an Electric-Motor Drive?
Factors Responsible for the Growth of Electric Drives
Typical Applications of Electric Drives
The Multi-Disciplinary Nature of Drive Systems
Structure of the Textbook
References
Problems
Understanding Mechanical System Requirements for Electric Drives
Introduction
Systems with Linear Motion
Rotating Systems
Friction
Torsional Resonances
Electrical Analogy
Coupling Mechanisms
Types of Loads
Four-Quadrant Operation
Steady State and Dynamic Operations
References
Problems
Review of Basic Electric Circuits
Introduction
Phasor Representation in Sinusoidal Steady State
Three-Phase Circuits
Reference
Problems
Basic Understanding of Switch-Mode Power Electronic Converters in Electric Drives
Introduction
Overview of Power Processing Units (PPUs)
Converters for DC Motor Drives �2Vd , vo , Vd�
Synthesis of Low-Frequency AC
Three-Phase Inverters
Power Semiconductor Devices
References
Problems
Magnetic Circuits
Introduction
Magnetic Field Produced by Current-Carrying Conductors
Flux Density B and the Flux f
Magnetic Structures with Air Gaps
Inductances
Faraday�s Law: Induced Voltage in a Coil due to Time-Rate of Change of Flux Linkage
Leakage and Magnetizing Inductances
Transformers
Permanent Magnets
Basic Principles of Electromechanical Energy Conversion
Introduction
Basic Structure
Production of Magnetic Field
Basic Principles of Operation
Application of the Basic Principles
Energy Conversion
Power Losses and Energy Efficiency
Machine Ratings
DC-Motor Drives and Electronicallycommutated Motor (ECM) Drives
Introduction
The Structure of DC Machines
Operating Principles of DC Machines
DC-Machine Equivalent Circuit
Various Operating Modes in DC-Motor Drives
Flux Weakening in Wound-Field Machines
Power-Processing Units in DC Drives
Electronically-Commutated Motor (ECM) Drives
Designing Feedback Controllers for Motor Drives
Introduction
Control Objectives
Cascade Control Structure
Steps in Designing the Feedback Controller
System Representation for Small-Signal Analysis
Controller Design
Example of a Controller Design
The Role of Feed-Forward
Effects of Limits
Anti-Windup (Non-Windup) Integration
Introduction to AC Machines and Space Vectors
Introduction
Sinusoidally-Distributed Stator Windings
The Use of Space Vectors to Represent Sinusoidal Field Distributions in the Air Gap
Space-Vector Representation of Combined Terminal Currents and Voltages
Balanced Sinusoidal Steady-State Excitation (Rotor Open-Circuited)
Sinusoidal Permanent Magnet AC (PMAC) Drives, LCI-Synchronous Motor Drives, and Synchronous Generators
Introduction
The Basic Structure of Permanent-Magnet AC (PMAC) Machines
Principle of Operation
The Controller and the Power-Processing Unit (PPU)
Load-Commutated-Inverter (LCI) Supplied Synchronous Motor Drives
Synchronous Generators
Induction Motors: Balanced, Sinusoidal Steady State Operation
Introduction
The Structure of Three-Phase, Squirrel-Cage Induction Motors
The Principles of Induction Motor Operation
Tests to Obtain the Parameters of the Per-Phase Equivalent Circuit
Induction Motor Characteristics at Rated Voltages in Magnitude and Frequency
Induction Motors of Nema Design A, B, C, and D
Line Start
Reduced Voltage Starting (�soft start�) of Induction Motors
Energy-Savings in Lightly-Loaded Machines
Doubly-Fed Induction Generators (DFIG) in Wind Turbines
Induction-Motor Drives: Speed Control
Introduction
Conditions for Efficient Speed Control Over a Wide Range
Applied Voltage Amplitudes to Keep ^ Bms 5 ^ Bms;rated
Starting Considerations in Drives
Capability to Operate below and above the Rated Speed
Induction-Generator Drives
Speed Control of Induction-Motor Drives
Pulse-Width-Modulated Power-Processing Unit
Reduction of ^ Bms at Light Loads
Reluctance Drives: Stepper-Motor and Switched-Reluctance Drives
Introduction
The Operating Principle of Reluctance Motors
Stepper-Motor Drives
Switched-Reluctance Motor Drives
Energy Efficiency of Electric Drives and Inverter-Motor Interactions
Introduction
The Definition of Energy Efficiency in Electric Drives
The Energy Efficiency of Induction Motors with Sinusoidal Excitation
The Effects of Switching-Frequency Harmonics on Motor Losses
The Energy Efficiencies of Power-Processing Units
Energy Efficiencies of Electric Drives
The Economics of Energy Savings by Premium-Efficiency Electric Motors and Electric Drives
The Deleterious Effects of The PWM-Inverter Voltage Waveform on Motor Life
Benefits of Using Variable-Speed Drives

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