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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)
In this paper, a backstepping controller of Induction Motor (IM) is proposed using the fourth order model in fixed two frame reference axis with rotor flux and stator currents as state variables. The approach of backstepping requires, generally, that the nonlinear system is in strict feed-back loop. To implement this strategy over the IM, some(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)
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 step by(More)
Self-excited induction generators (SEIG) are mostly exploited in isolated areas to generate electrical energy. However, an isolated induction generator should have a control system that keeps the DC bus voltage at a constant value when the speed of the rotor and load are varied. The control scheme has been presented to maintain the DC bus voltage constant(More)