目 录

Unit 1 Fundamentals of Electronic
Circuits 1
1.1 Introduction to Circuit Theory 1
New Words and Expressions 4
Notes 4
1.2 Analog and Digital Circuits 5
New Words and Expressions 11
Notes 11
1.3 Three-Phase Circuits 13
New Words and Expressions 17
Notes 18
1.4 Further Reading 18
Reading Amplifiers and Their
Applications 18
Translation Methods and Skills of EST
（English of Science and Technology）
——科技英语翻译方法与技巧：省略法 21
Exercises 23
Unit 2 Power Electronics 24
2.1 Introduction 24
New Words and Expressions 25
Notes 26
2.2 Power Semiconductor Devices 27
2.2.1 Diode 28
2.2.2 Thyristors and GTOs 28
2.2.3 Power MOSFEETs and IGBTs 29
New Words and Expressions 30
Notes 30
2.3 Power Electronic Converters 31
2.3.1 Rectifiers and Inverters 31
2.3.2 Choppers and Cycloconverters 33
New Words and Expressions 35
Notes 35
2.4 Further Reading 36
Reading Electronic Filters 36
Translation Methods and Skills of EST
（English of Science and Technology）——
科技英语翻译方法与技巧：长句的翻译 37
Exercises 39
Unit 3 Electrical Machines 41
3.1 Introduction 41
3.1.1 Elementary Concepts of Electrical
Machines 41
3.1.2 Classification of Electrical
Machines 41
3.1.3 Applications of Electrical Machines 42
New Words and Expressions 43
Notes 44
3.2 Induction Machines 44
3.2.1 Equivalent Circuit of a Polyphase
Induction Machine 45
3.2.2 Performance of a Polyphase
Induction Machine 46
3.2.3 Torque-Speed Characteristics of
3-Phase Induction Motors 47
3.2.4 Applications for Induction Motors 48
New Words and Expressions 48
Notes 49
3.3 Synchronous Machines 50
3.3.1 Equivalent Circuit of a Synchronous
Machine 50
3.3.2 Power Angle and Other Performance
Characteristics 51
3.3.3 Steady-State Stability 53
3.3.4 Applications for Synchronous
Motors 53
New Words and Expressions 53
Notes 54
3.4 DC Machines 55
3.4.1 Constructional Features of DC
Machines 55
3.4.2 Equivalent Circuit of a DC
Machine 57
3.4.3 DC Machines Characteristics 58
3.4.4 Applications for DC Machines 59
New Words and Expressions 61
Notes 61
3.5 Further Reading 62
Reading Monitoring Techniques for
Rotating 62
Electrical Machines 62
Translation Methods and Skills of EST
（English of Science and Technology） ——科
技英语翻译方法与技巧：词义的确定 64
Exercises 65
Unit 4 Electric Power Systems 67
4.1 Introduction 67
New Words and Expressions 68
Notes 69
4.2 Components of Electric Power
Systems 69
New Words and Expressions 71
Notes 71
4.3 Operation and Control of Power
Systems 72
New Words and Expressions 74
Notes 75
4.4 Power System Protections 76
4.4.1 Faults and Their Damages on Power
Systems 76
4.4.2 Circuit Breakers 78
4.4.3 Distance Protection 79
4.4.4 Lightning Arresters 80
New Words and Expressions 81
Notes 82
4.5 Power System Stability 83
New Words and Expressions 84
Notes 84
4.6 Further Reading 85
Reading Smart Grid 85
Translation Methods and Skills of EST
（English of Science and Technology） ——科
技英语翻译方法与技巧：被动语态 86
Exercises 89
Unit 5 Electric Power Generations 91
5.1 Coal-fired Power Generation 91
New Words and Expressions 92
Notes 93
5.2 Hydropower Generation 94
New Words and Expressions 96
Notes 96
5.3 Windpower Generation 97
New Words and Expressions 99
Notes 99
5.4 Solarpower Generation 100
New Words and Expressions 102
Notes 102
5.5 Further Reading 103
Reading Wind-Energy-Conversion
Systems 103
Translation Methods and Skills of EST
（English of Science and Technology） ——科
技英语翻译方法与技巧： 顺译与调整
语序 103
Exercises 104
Unit 6 Automatic Control 107
6.1 Introduction 107
6.1.1 Elementary Concept of Control
Systems 107
6.1.2 Classification and Applications of
Control Systems 108
New Words and Expressions 109
Notes 110
6.2 Feedback Control 112
6.2.1 Transfer Functions and Block
Diagrams 112
6.2.2 Dynamic Res