EXPERIMENTAL RESULTS OF A CASCADE OBSERVER FOR SENSORLESS INDUCTION MOTOR ON LOW FREQUENCIES BENCHMARK

Abstract The purpose of this paper is to design a cascade observer to reconstruct the angular speed of induction motor as well as an estimator of fluxes and load torque. Due to the complexity of induction motor observation at low frequencies the observer and the estimator are tested and validated on reference trajectories of a new sensorless induction motor benchmark particularly in the case when the motor state is unobservable. This benchmark is applied on an experimental setup located at IRCCyN (Nantes, France).

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