Real-Time Digital Simulation for Sensorless Control Scheme based on Reduced-Order Sliding Mode Observer for Dual Star Induction Motor

This paper proposes a novel sensorless vector control scheme for an open-end stator winding induction motor. The motor is fed by different three-voltage inverters with isolated DC sources. The inverters are controlled using space vector Pulse Width Modulation (PWM). A reduced-order sliding mode observer with smooth function is proposed for speed-sensorless control. The simulation results show the simultaneous correct estimation of both rotor flux and speed. The proposed control scheme is built within the Simulink environment combined with the Real-Time platform. The obtained results confirm the clear efficacy of the proposed control scheme under a variety of operating conditions.