TWO INDUCTION MOTORS ELECTRIC DRIVE WITH ROTATORY STATOR

Abstract

The brief survey of techniques to restrict the start current of an induction motor is carried out. The electric drive consisted of two identical induction motors one of which has rotatory stator is proposed as an alternative type of soft-starters. The principle of its operation from the theoretical background is considered. The equivalent circuit of electric drive are developed and mathematical model on its base are designed. The experimental setup to validate the mathematical model is described. The results of both simulation by Matlab and experimental investigation are presented. The assessment of power losses in the proposed electric drive shows a possibility to use it as an adjustable electric drive in some applications without strong requirements to speed control.