Flux and Voltage Induction Machines Description Concept of Operation Torque Development Operation of the Induction Machine near Synchronous Speed Leakage Inductances and their Effects Operating characteristics Starting of Induction Motors Multiple pole pairs Synchronous Machines and Drives Design and Principle of Operation Wound Rotor Carrying DC Permanent Magnet Rotor Equivalent Circuit Operation of the Machine Connected to a Bus of Constant Voltage and Frequency Operation from a Source of Variable Frequency and Voltage.