Page 18 - Electric Machinery Fundamentals

xviii TABLE OF CONTENTS
\
5'51 ,
Chapter 9 Single-Phase and Special-Purpose Motors

9.1 The Universal Motor ~"
Applications of Universal Motors I Speed Control of
Universal Motors
9.2 Introduction to Single-Phase Induction Motors 569
The Double-Revolving-Field Theory of Single-PJwse
Induction Motors I The Cross-Field Themy of Single-
Phase Induction Motors
\
9.3 Starting Single-Phase Induction Motors 578 \
Split-Phase Windings I Capacitor-Start Motors I
Permanent Split-Capacitor and Capacitor-Start, Capacitor-
Run Motors I Shaded-Pole Motors I Comparison of
Single-Phase Induction Motors
9.4 Speed Control of Single-Phase Induction Motors 588 (
9.5 The Circuit Model of a Single-Phase Induction Motor 590
Circuit Analysis with the Single-Phase Induction Motor
Equivalent Circuit
9.6 Other Types of Motors 597
Reluctance Motors / Hysteresis Motors /
Stepper Motors / Brushless DC Motors
9.7 Summary 609
Questions 610
Problems 611
References 612

Appendix A Three-Phase Circuits 613
A.l Generation of Three-Phase Voltages and Currents 613
A.2 Voltages and Currents in a Three-Phase Circuit 617
Voltages and Currents in the ""Ye (Y) Connection /
Voltages alld Currents in the Delta (/1) Connection
A.3 Power Relationships in Three-Phase Circuits 622
Three-Phase Power Equations Involving Phase Quantities /
Three-Phase Power Equations Involving Line Quantities
A.4 Analysis of Balanced Three-Phase Systems 625
A.s One-Line Diagrams 632
A.6 Using the Power Triangle 632
Questions 635
Problems 636
Rpfjlorjlonrp h1Q