An Analog and Analysis of Induction Servomotors

The development of solid-state frequency converters or inverters makes the induction motor a possible machine for the final drive of a position control system, especially in power sizes. This paper analyzes the transient behavior of induction motors under conditions of changing supply frequency. The analysis is achieved by considering the squirrel cage as a 2-coil rotor and it is shown that this representation is exact. This model enables a simple simulator to be built and effects of rotor time constant and inertia can be studied with relative ease.