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한빛아카데미
원서
판매중
책소개
This book is part of a three-book series.
Ned Mohan has been a leader in EES education and research for decades, as author of the best-selling text/reference Power Electronics.??
This book emphasizes applications of electric machines and drives that are essential for wind turbines and electric and hybrid-electric vehicles. The approach taken is unique in the following respects:
A systems approach, where Electric Machines are covered in the context of the overall drives with applications that students can appreciate and get enthusiastic about;A fundamental and physics-based approach that not only teaches the analysis of electric machines and drives, but also prepares students for learning how to control them in a graduate level course;Use of the space-vector-theory that is made easy to understand. They are introduced in this book in such a way that students can appreciate their physical basis;A unique way to describe induction machines that clearly shows how they go from the motoring-mode to the generating-mode, for example in wind and electric vehicle applications, and how they ought to be controlled for the most efficient operation.
New feature
WILEY INTRODUCES A NEW SERIES ON POWER SYSTEMS FOR THE NEXT GENERATION OF SUSTAINABLE POWER.
By Ned Mohan, University of Minnesota
Working with a number of universities, Dr. Ned Mohan has developed a forward-looking curriculum for teaching undergraduate courses in Power Systems, Power Electronics and Electric Machines and Drives. This groundbreaking new series is based on that curriculum and represent the next generation in the engineering of sustainable power. Dr. Mohan has been a leader in Electric Energy systems education and research for decades, as an author of the best-selling text/reference Power Electronics published by Wiley.
HALLMARK FEATURES OF THE SERIES
Brief, accessible coverage designed for undergraduates and readers new to power systems engineering.Updated with modern application examples related to renewable energy and the 'smart grid.'Supplemented with a wide range of digital resources ? slides, video clips, animations, and lab manuals. (For instructors)Builds off the author's publications in the area.Adopts a systems approach, which puts otherwise dry technical detail in the context of applications that motivate students and readers (hybrid cars, wind turbines, etc.)Briefer and more suitable for an undergraduate audience or engineers new to this area than competing titles.ELECTRIC MACHINES AND DRIVES: A FIRST COURSE
This book focuses on Electric Machines and Drives as one of the topics in an integrated Electric Energy Systems curriculum. It follows a top-down, systems-level approach to highlight interrelationships between the sub-fields within this curriculum, and is intended to cover both the fundamentals and practical design in a single-semester course.
저자소개
Ned Mohan
-
최근작
목차
PREFACE xi CHAPTER 1 INTRODUCTION TO ELECTRIC DRIVE SYSTEMS 11.1 History 11.2 What Is an Electric-Motor Drive? 21.3 Factors Responsible for the Growth of Electric Drives 31.4 Typical Applications of Electric Drives 31.5 The Multi-Disciplinary Nature of Drive Systems 81.6 Structure of the Textbook 9References 10Problems 11 CHAPTER 2 UNDERSTANDING MECHANICAL SYSTEM REQUIREMENTS FOR ELECTRIC DRIVES 122.1 Introduction 122.2 Systems with Linear Motion 122.3 Rotating Systems 142.4 Friction 202.5 Torsional Resonances 212.6 Electrical Analogy 222.7 Coupling Mechanisms 232.8 Types of Loads 262.9 Four-Quadrant Operation 272.10 Steady State and Dynamic Operations 27References 28Problems 28 CHAPTER 3 REVIEW OF BASIC ELECTRIC CIRCUITS 313.1 Introduction 313.2 Phasor Representation in Sinusoidal Steady State 313.3 Three-Phase Circuits 38Reference 43Problems 43 CHAPTER 4 BASIC UNDERSTANDING OF SWITCH-MODE POWER ELECTRONIC CONVERTERS IN ELECTRIC DRIVES 464.1 Introduction 464.2 Overview of Power Processing Units (PPUs) 464.3 Converters for DC Motor Drives ð2Vd , vo , VdÞ 524.4 Synthesis of Low-Frequency AC 584.5 Three-Phase Inverters 594.6 Power Semiconductor Devices 62References 66Problems 66 CHAPTER 5 MAGNETIC CIRCUITS 695.1 Introduction 695.2 Magnetic Field Produced by Current-Carrying Conductors 695.3 Flux Density B and the Flux f 715.4 Magnetic Structures with Air Gaps 745.5 Inductances 765.6 Faraday’s Law: Induced Voltage in a Coil due to Time-Rate of Change of Flux Linkage 785.7 Leakage and Magnetizing Inductances 815.8 Transformers 835.9 Permanent Magnets 88References 90Problems 90 CHAPTER 6 BASIC PRINCIPLES OF ELECTROMECHANICAL ENERGY CONVERSION 926.1 Introduction 926.2 Basic Structure 926.3 Production of Magnetic Field 946.4 Basic Principles of Operation 966.5 Application of the Basic Principles 986.6 Energy Conversion 996.7 Power Losses and Energy Efficiency 1016.8 Machine Ratings 102References 103Problems 103 CHAPTER 7 DC-MOTOR DRIVES AND ELECTRONICALLYCOMMUTATED MOTOR (ECM) DRIVES 1087.1 Introduction 1087.2 The Structure of DC Machines 1097.3 Operating Principles of DC Machines 1117.4 DC-Machine Equivalent Circuit 1177.5 Various Operating Modes in DC-Motor Drives 1197.6 Flux Weakening in Wound-Field Machines 1227.7 Power-Processing Units in DC Drives 1237.8 Electronically-Commutated Motor (ECM) Drives 123References 129Problems 129 CHAPTER 8 DESIGNING FEEDBACK CONTROLLERS FOR MOTOR DRIVES 1328.1 Introduction 1328.2 Control Objectives 1328.3 Cascade Control Structure 1358.4 Steps in Designing the Feedback Controller 1358.5 System Representation for Small-Signal Analysis 1368.6 Controller Design 1388.7 Example of a Controller Design 1398.8 The Role of Feed-Forward 1458.9 Effects of Limits 1458.10 Anti-Windup (Non-Windup) Integration 146References 147Problems and Simulations 147 CHAPTER 9 INTRODUCTION TO AC MACHINES AND SPACE VECTORS 1499.1 Introduction 1499.2 Sinusoidally-Distributed Stator Windings 1499.3 The Use of Space Vectors to Represent Sinusoidal Field Distributions in the Air Gap 1569.4 Space-Vector Representation of Combined Terminal Currents and Voltages 1599.5 Balanced Sinusoidal Steady-State Excitation (Rotor Open-Circuited) 164References 172Problems 172 CHAPTER 10 SINUSOIDAL PERMANENT MAGNET AC (PMAC) DRIVES, LCI-SYNCHRONOUS MOTOR DRIVES, AND SYNCHRONOUS GENERATORS 17410.1 Introduction 17410.2 The Basic Structure of Permanent-Magnet AC (PMAC) Machines 17510.3 Principle of Operation 17510.4 The Controller and the Power-Processing Unit (PPU) 18510.5 Load-Commutated-Inverter (LCI) Supplied Synchronous Motor Drives 18610.6 Synchronous Generators 187References 191Problems 191 CHAPTER 11 INDUCTION MOTORS: BALANCED, SINUSOIDAL STEADY STATE OPERATION 19311.1 Introduction 19311.2 The Structure of Three-Phase, Squirrel-Cage Induction Motors 19411.3 The Principles of Induction Motor Operation 19411.4 Tests to Obtain the Parameters of the Per-Phase Equivalent Circuit 21511.5 Induction Motor Characteristics at Rated Voltages in Magnitude and Frequency 21611.6 Induction Motors of Nema Design A, B, C, and D 21811.7 Line Start 21911.8 Reduced Voltage Starting (“soft start”) of Induction Motors 22011.9 Energy-Savings in Lightly-Loaded Machines 22011.10 Doubly-Fed Induction Generators (DFIG) in Wind Turbines 221References 228Problems 229 CHAPTER 12 INDUCTION-MOTOR DRIVES: SPEED CONTROL 23112.1 Introduction 23112.2 Conditions for Efficient Speed Control Over a Wide Range 23212.3 Applied Voltage Amplitudes to Keep ^ Bms 5 ^ Bms;rated 23512.4 Starting Considerations in Drives 23912.5 Capability to Operate below and above the Rated Speed 24012.6 Induction-Generator Drives 24212.7 Speed Control of Induction-Motor Drives 24312.8 Pulse-Width-Modulated Power-Processing Unit 24412.9 Reduction of ^ Bms at Light Loads 248References 249Problems 249 CHAPTER 13 RELUCTANCE DRIVES: STEPPER-MOTOR AND SWITCHED-RELUCTANCE DRIVES 25013.1 Introduction 25013.2 The Operating Principle of Reluctance Motors 25113.3 Stepper-Motor Drives 25313.4 Switched-Reluctance Motor Drives 259References 260Problems 260 CHAPTER 14 ENERGY EFFICIENCY OF ELECTRIC DRIVES AND INVERTER-MOTOR INTERACTIONS 26114.1 Introduction 26114.2 The Definition of Energy Efficiency in Electric Drives 26114.3 The Energy Efficiency of Induction Motors with Sinusoidal Excitation 26214.4 The Effects of Switching-Frequency Harmonics on Motor Losses 26514.5 The Energy Efficiencies of Power-Processing Units 26614.6 Energy Efficiencies of Electric Drives 26614.7 The Economics of Energy Savings by Premium-Efficiency Electric Motors and Electric Drives 26614.8 The Deleterious Effects of The PWM-Inverter Voltage Waveform on Motor Life 26714.9 Benefits of Using Variable-Speed Drives 268References 268Problem 269
PREFACE xi
CHAPTER 1 INTRODUCTION TO ELECTRIC DRIVE SYSTEMS 1
1.1 History 1
1.2 What Is an Electric-Motor Drive? 2
1.3 Factors Responsible for the Growth of Electric Drives 3
1.4 Typical Applications of Electric Drives 3
1.5 The Multi-Disciplinary Nature of Drive Systems 8
1.6 Structure of the Textbook 9
References 10
Problems 11
CHAPTER 2 UNDERSTANDING MECHANICAL SYSTEM REQUIREMENTS FOR ELECTRIC DRIVES 12
2.1 Introduction 12
2.2 Systems with Linear Motion 12
2.3 Rotating Systems 14
2.4 Friction 20
2.5 Torsional Resonances 21
2.6 Electrical Analogy 22
2.7 Coupling Mechanisms 23
2.8 Types of Loads 26
2.9 Four-Quadrant Operation 27
2.10 Steady State and Dynamic Operations 27
References 28
Problems 28
CHAPTER 3 REVIEW OF BASIC ELECTRIC CIRCUITS 31
3.1 Introduction 31
3.2 Phasor Representation in Sinusoidal Steady State 31
3.3 Three-Phase Circuits 38
Reference 43
Problems 43
CHAPTER 4 BASIC UNDERSTANDING OF SWITCH-MODE POWER ELECTRONIC CONVERTERS IN ELECTRIC DRIVES 46
4.1 Introduction 46
4.2 Overview of Power Processing Units (PPUs) 46
4.3 Converters for DC Motor Drives ð2Vd , vo , VdÞ 52
4.4 Synthesis of Low-Frequency AC 58
4.5 Three-Phase Inverters 59
4.6 Power Semiconductor Devices 62
References 66
Problems 66
CHAPTER 5 MAGNETIC CIRCUITS 69
5.1 Introduction 69
5.2 Magnetic Field Produced by Current-Carrying Conductors 69
5.3 Flux Density B and the Flux f 71
5.4 Magnetic Structures with Air Gaps 74
5.5 Inductances 76
5.6 Faraday’s Law: Induced Voltage in a Coil due to Time-Rate of Change of Flux Linkage 78
5.7 Leakage and Magnetizing Inductances 81
5.8 Transformers 83
5.9 Permanent Magnets 88
References 90
Problems 90
CHAPTER 6 BASIC PRINCIPLES OF ELECTROMECHANICAL ENERGY CONVERSION 92
6.1 Introduction 92
6.2 Basic Structure 92
6.3 Production of Magnetic Field 94
6.4 Basic Principles of Operation 96
6.5 Application of the Basic Principles 98
6.6 Energy Conversion 99
6.7 Power Losses and Energy Efficiency 101
6.8 Machine Ratings 102
References 103
Problems 103
CHAPTER 7 DC-MOTOR DRIVES AND ELECTRONICALLYCOMMUTATED MOTOR (ECM) DRIVES 108
7.1 Introduction 108
7.2 The Structure of DC Machines 109
7.3 Operating Principles of DC Machines 111
7.4 DC-Machine Equivalent Circuit 117
7.5 Various Operating Modes in DC-Motor Drives 119
7.6 Flux Weakening in Wound-Field Machines 122
7.7 Power-Processing Units in DC Drives 123
7.8 Electronically-Commutated Motor (ECM) Drives 123
References 129
Problems 129
CHAPTER 8 DESIGNING FEEDBACK CONTROLLERS FOR MOTOR DRIVES 132
8.1 Introduction 132
8.2 Control Objectives 132
8.3 Cascade Control Structure 135
8.4 Steps in Designing the Feedback Controller 135
8.5 System Representation for Small-Signal Analysis 136
8.6 Controller Design 138
8.7 Example of a Controller Design 139
8.8 The Role of Feed-Forward 145
8.9 Effects of Limits 145
8.10 Anti-Windup (Non-Windup) Integration 146
References 147
Problems and Simulations 147
CHAPTER 9 INTRODUCTION TO AC MACHINES AND SPACE VECTORS 149
9.1 Introduction 149
9.2 Sinusoidally-Distributed Stator Windings 149
9.3 The Use of Space Vectors to Represent Sinusoidal Field Distributions in the Air Gap 156
9.4 Space-Vector Representation of Combined Terminal Currents and Voltages 159
9.5 Balanced Sinusoidal Steady-State Excitation (Rotor Open-Circuited) 164
References 172
Problems 172
CHAPTER 10 SINUSOIDAL PERMANENT MAGNET AC (PMAC) DRIVES, LCI-SYNCHRONOUS MOTOR DRIVES, AND SYNCHRONOUS GENERATORS 174
10.1 Introduction 174
10.2 The Basic Structure of Permanent-Magnet AC (PMAC) Machines 175
10.3 Principle of Operation 175
10.4 The Controller and the Power-Processing Unit (PPU) 185
10.5 Load-Commutated-Inverter (LCI) Supplied Synchronous Motor Drives 186
10.6 Synchronous Generators 187
References 191
Problems 191
CHAPTER 11 INDUCTION MOTORS: BALANCED, SINUSOIDAL STEADY STATE OPERATION 193
11.1 Introduction 193
11.2 The Structure of Three-Phase, Squirrel-Cage Induction Motors 194
11.3 The Principles of Induction Motor Operation 194
11.4 Tests to Obtain the Parameters of the Per-Phase Equivalent Circuit 215
11.5 Induction Motor Characteristics at Rated Voltages in Magnitude and Frequency 216
11.6 Induction Motors of Nema Design A, B, C, and D 218
11.7 Line Start 219
11.8 Reduced Voltage Starting (“soft start”) of Induction Motors 220
11.9 Energy-Savings in Lightly-Loaded Machines 220
11.10 Doubly-Fed Induction Generators (DFIG) in Wind Turbines 221
References 228
Problems 229
CHAPTER 12 INDUCTION-MOTOR DRIVES: SPEED CONTROL 231
12.1 Introduction 231
12.2 Conditions for Efficient Speed Control Over a Wide Range 232
12.3 Applied Voltage Amplitudes to Keep ^ Bms 5 ^ Bms;rated 235
12.4 Starting Considerations in Drives 239
12.5 Capability to Operate below and above the Rated Speed 240
12.6 Induction-Generator Drives 242
12.7 Speed Control of Induction-Motor Drives 243
12.8 Pulse-Width-Modulated Power-Processing Unit 244
12.9 Reduction of ^ Bms at Light Loads 248
References 249
Problems 249
CHAPTER 13 RELUCTANCE DRIVES: STEPPER-MOTOR AND SWITCHED-RELUCTANCE DRIVES 250
13.1 Introduction 250
13.2 The Operating Principle of Reluctance Motors 251
13.3 Stepper-Motor Drives 253
13.4 Switched-Reluctance Motor Drives 259
References 260
Problems 260
CHAPTER 14 ENERGY EFFICIENCY OF ELECTRIC DRIVES AND INVERTER-MOTOR INTERACTIONS 261
14.1 Introduction 261
14.2 The Definition of Energy Efficiency in Electric Drives 261
14.3 The Energy Efficiency of Induction Motors with Sinusoidal Excitation 262
14.4 The Effects of Switching-Frequency Harmonics on Motor Losses 265
14.5 The Energy Efficiencies of Power-Processing Units 266
14.6 Energy Efficiencies of Electric Drives 266
14.7 The Economics of Energy Savings by Premium-Efficiency Electric Motors and Electric Drives 266
14.8 The Deleterious Effects of The PWM-Inverter Voltage Waveform on Motor Life 267
14.9 Benefits of Using Variable-Speed Drives 268
References 268
Problem 269
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