A new robust control based on active disturbance rejection controller for speed sensorless induction motor

This paper aims to present a new robust command called active disturbance rejection controller (ADRC) applied to the sensorless induction motor and introduces the problem of the parameters, which significantly deteriorate the performance of the control, this variation introduces an important role in the loss of dynamic performance in an undesirable coupling between flux and torque of the machine. This paper offers a new scheme for estimation of induction motor speed using αβ representation of the model in the stationary reference frame and measurements of accessible motor variables only (currents, voltages and speed). A second-order of MRAS based sliding mode estimator is designed for speed estimation. The proposed schemes are implemented using MATLAB simulation, improve the system robustness against motor parameter variations and increase the performance of the speed loop controller.

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