Abstract

The purpose of this work is to present the speed sensorless vector control method of the torque production from each rotor of three induction motors with parallel connected stator windings fed by a single inverter and to discuss the performance of the system from simulation results. A control method for the parallel connected dual induction motor drive system was proposed by P.M. Kelecy et al. (1994). The method uses average and differential currents flowing into stator windings and rotor flux of dual induction motors. The authors proposed the theory (1999) that the adaptive rotor flux observer for estimating the induction motor speed is applied to. The control method of three induction motors proposed in this paper is the extension of the two induction motors control method.

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