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Robust control algorithms may improve the efficiency of wave power conversion systems since they present intrinsic nonlinear dynamics and the system uncertainties. Sometimes, the generators that can operate al variable speed (e.g. double feed induction generator) are used at wave power generation plants, since they may improve the system efficiency to generate power when compared to fixed speed generators...
This paper presents an effective Proportional Derivative (PD) position controller of induction motor drives. A new procedure for controller design in frequency domain and the d-q synchronous rotating reference frame is presented, where the indirect vector control has been used. This position controller is validated experimentally using an industrial induction motor of 7.5 kW and an incremental encoder...
In this paper, a sensorless induction motor parameter identification is presented. Sensorless control employs a variety of estimators and observers of motor speed, torque and fluxes, and accurate information about motor parameters is crucial to obtain a high performance control. The parameters of the induction motor equivalent circuit are obtained by means of DC an AC tests using the voltage-source...
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