ABSTRACT
The theory of operation of three-phase induction motors is well articulated in numerous text books. When the three-phase stator winding is excited by a three-phase balanced supply, a rotating magnetic field is created on the stator. This rotating field causes rotation of the rotor and the conversion of electrical energy to mechanical energy. Induction-motor performance study includes motor efficiency, power factor, etc., during steady state and transient response of speed and torque. Computation of steady state and transient characteristics of an induction motor require a suitable motor model. This chapter introduces the development of a two-axis induction motor model, which is subsequently reduced to the commonly available per-phase equivalent circuit.
