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RT-LAB platform for real-time implementation of luenberger observer based speed sensorless control of induction motor

Bechar Mansour, Hazzab Abdeldjebar, Habbab Mohamed, Sicard Pierre, Slimi Mohammed

Journal of Automation Mobile Robotics and Intelligent Systems

2019

Vol. 13, No. 4

65--72

This paper proposes RT-LAB platform for realtime implementation of Luenberger observer based on speed sensorless scalar control of induction motor. The observed shaft speed is derived from lyapunov’s theory. It is shown by an extensive study that this Luenberger observer with PI anti-windup speed controller is completely satisfactory at (nominal, variable, reverse) speed references and it is also robust to load torque disturbance. The sensorless control algorithm along with the proposed Luenberger observer is modeled, built in the Host PC and successfully implemented in real-time using digital simulator OP5600. The experimental results observed in the GW-Instek digital oscilloscope’s screen validate the effectiveness of the proposed Luenberger observer for speed sensorless scheme.