Page 13 - Electric Machinery Fundamentals

TABLE OF CONTENTS xiii

Chapter 3 AC Machinery Fundamentals 152
3.1 A Simple Loop in a Uniform Magnetic Field 153
The Voltage Induced in a Simple Rotating Loop / The
Torque Induced in a Current-Carrying Loop
3.2 The Rotating Magnetic Field 160
Proof of the Rotating Magnetic Field Concept / The
Relationship between Electrical Frequency and the Speed
of Magnetic Field Rotation / Reversing The Direction of
Magnetic Field Rotation
3.3 Magnetoll1otive Force and Flux Distribution on
AC Machi nes 169
3.4 lnduced VOltage in AC Machines 172
The Induced Voltage ill a Coil 011 a Two-Pole Stator / The
Induced Volrage in a Three-Phase Set a/Coils / The RMS
Vo/rage in a Three-Phase Stator
3.5 Induced Torque in an AC Machine 178
3.6 Winding Insulation in an AC Machine 182
3.7 AC Machine Power Flows and Losses 182
The Losses in AC Machines / The Power-Flow Diagram
3.8 Voltage Regulation and Speed Regulation 186
3.9 Summary 187
Questions 187
Problems 188
References 190
Chapter 4 Synchronous Generators 191

4.1 Synchronous Generator Construction 192
4.2 The Speed of Rotation of a Synchronous Generator 197
4.3 The Internal Generated Voltage of a SynChronous Generator 197
4.4 The Equivalent Circuit of a Synchronous Generator 198
4.5 The Phasor Diagram of a Synchronous Generator 202
4.6 Power and Torque in Synchronous Generators 205
4.7 Measuring Synchronous Generator Model Parameters 208
The Short-Circuit Ratio
4.8 The Synchronous Generator Operating Alone 213
The Effecl 0/ Load Changes on a Synchronolls Generator
Operating Alone / Example Problems
4.9 Parallel Operation of AC Generators 224
The COl/ditions Required/or Paralleling / The General
Procedure for Paralleling Generators / Frequellcy-Power