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Simultaneous state and parameter estimation in asynchronous motors under sensorless speed control

This paper proposes an exact (Kalman-like) observer for the simultaneous state and parameter estimation in asynchronous motors — including speed and resistant torque estimation —, as well as a simulation study of its use under an estimate-based speed control scheme. The simulation setup includes the model of a PWM-controlled voltage source inverter, and the results are quite promising.