Ahmed Abbou

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This paper presents an on-line estimation for the stator resistances of the induction motor in the direct torque controlled drive, using artificial neural networks. The variation of stator resistance due to changes in temperature or frequency degrades the performance of such control strategy. In order to solve this issue, a backpropagation algorithm is used(More)
In This paper, the authors propose a Sensorless Direct Torque and Flux Control (DTFC) of Induction Motor (IM) using two approach intelligent techniques: Mamdani Fuzzy Logic (FL) controller is used for controlling the rotor speed and Artificial Neural Network (ANN) applied in switching select stator voltage. We estimated the rotor speed by using the Model(More)
In this paper a Sensorless Backstepping Control scheme for rotor speed and rotor flux control of induction motor drive, is proposed. The most interesting point of this technique is to deal with non-linearity of high-order system by using the virtual control variable to make this system simple, and thus the control outputs can be derived step by step through(More)
This paper presents design and implementation of a sensorless speed control with DTFC (Direct Torque and Flux Control) strategy for induction motor. The DTFC in its conventional form uses algorithms to select the components of the voltage inverter. This paper proposes to replace the conventional selector switches statements of the voltage inverter by a(More)
A robust Rotor Flux Oriented Control (RFOC) requires the compensation for the effect of rotor resistance. The variation of rotor resistance due to changes in temperature or frequency degrade the performance of RFOC controller by introducing errors in the estimated flux linkage magnitude, position and the electromagnetic torque. So the compensation for the(More)
Abstract: In this paper, an induction machine rotor speed and rotor flux control using a sensorless backstepping control scheme is discussed. The most interesting point of this technique is that it deals with the nonlinearity of a high-order system by using the virtual control variable to make this system simple, and thus the control outputs can be derived(More)
In this paper, we propose a sensorless backstepping control of induction motor (IM) associated with three levels neutral clamped (NPC) inverter. First, the backstepping approach is designed to steer the flux and speed variables to theirs references and to compensate the uncertainties. A Lyapunov theory is used and it demonstrates that the dynamic(More)
This paper presents the performance of the extended Kalman filter (EKF) for speed sensorless indirect field oriented control (IFOC) of a squirrel cage induction motor (IM) supplied by a pulse width modulated (PWM) voltage-source inverter. The rotor speed of the induction motor is estimated, according to this method, using the direct measurements of the(More)