Impact of Increasing Stator Resistance on Active Disturbance Rejection Control Based Sensorless Induction Motor Compared with a Conventional PI and Fuzzy Logic Control

Abstract

The aim of this paper is to provide a comparative study of multiple command strategies for sensorless induction motor drives. Three commands are applied and compared in order to find out the robustness of each of them, the classical PI controller, the novel technique of Fuzzy Logic Controller (SIFLC) and Active Disturbance Rejection Controller (ADRC) are suggested. This command of active disturbance rejection control (ADRC) has become the interest of most of researchers in several years ago and it’s a powerful tool to reject disturbances with its robustness against the variations of process parameters and certainly with it’s simple tuning method, the fundamental basis of ADRC is based on the extended state observer ESO, its role is to estimate and compensate in real time all the external and internal disturbance of the physical plant. It may ne obviously concluded that the proposed strategy provides high response, fast transient time and small overshoot, better than the classical (PI) and (FLC) controllers in its overall operating conditions. In other side, an Advanced- Luenberger estimator based on single input fuzzy logic in adaptation mechanism is employed in order to estimate the rotor speed. The robustness analysis is obtained through computer simulation using Matlab/Simulink toolbox.
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