INTRODUCTION
This topic covers the most common types of ac induction motors, including polyphase and single-phase motors. Section 6.2 develops the theory of operation first for polyphase and single-phase operation, including combined winding operations for split-phase capacitor-start and capacitor-run motors.Next, the section develops the two-phase motor and develops single-phase motor theory using the revolving-field and symmetrical-components approach. Finally, Sec. 6.3 develops the three-phase polyphase motor theory.
Then, Sec. 6.4 develops geometry, flux path, and performance calculations for the most common configurations of single-phase motors. Next, the section discusses the shaded-pole motor using the cross-field theory as developed by P. H. Trickey and S. S. L. Chang. Modified calculation procedures are included. Finally, the section finishes the calculations by developing geometry, flux path, and performance calculations for the polyphase motor.