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This work deals with the control of the wind energy conversion system (WECS) equipped with two doubly-fed induction generators (DFIG). The main generator is controlled in order to keep the voltage and the frequency in the rates values. The second generator is connected when the power demand increase. But, before the connection, with the first generator, synchronization is done. After that, the system...
This paper addresses the robust stabilization problem of a permanent magnet synchronous motor (PMSM). In order to optimize the speed-control performance of the PMSM system with different disturbances and uncertainties, Sliding mode control design for the PMSM is developed. We discuss in this paper how to achieve and maintain the prospective benefits of sliding mode control (SMC) methodology combined...
A model reference adaptive system (MRAS) based speed estimator for sensorless induction motor (IM) drive is proposed in this paper. The MRAS is formed with flux rotor and the estimated stator current vector. The reference model utilizes measured current vector. On the other hand, the adjustable model uses the estimated stator current vector. The current is estimated through the solution of machine...
This paper propose a second-order sliding-mode observer for sensorless control of a permanent magnet synchronous motor. The corresponding observer is used to estimate the rotor speed. Simulation results are shown to confirm the effectiveness of the proposed method.
This paper deals with speed sensorless flatness based control of permanent magnet synchronous motor (PMSM) using a second order sliding mode observer. In the first part, the flatness control is associated with PI controller, this solution shows good robustness with respect to parameter variations and guarantees torque and speed tracking. In the second part, the high order sliding mode speed observer...
This paper, deals with the control and observation of an induction motor using second order sliding-mode technique. We present a new Lyapunov function for the stability analysis. This approach guarantees the same robustness and dynamic performance of traditional first-order SMC algorithms, and at the same time, attenuates the chattering phenomenon, which is the main drawback in the actual implementation...
This paper presents a new scheme for induction motor control. First the feedback sliding mode linearization control is applied to induction motor in order to separate the control of the rotor speed and flux square. Once the two physical outputs reach their reference, the machine control is performed by an H∞ controller. We detail, in this paper, how to design the H∞ controller to guarantee the robust...
In the following paper, we propose a new input-output sliding mode linearization control for induction motor combined with field oriented control (FOC). We develop two loops to control the speed and rotor flux modulus. The first one, inner loop, allows to linearize the system by a choose of closed loop poles to achieve a good linearization. The choice of a particular sliding surface permits to create...
A new backstepping controller is designed for two different speed sensorless induction motor, based on measurements of stator current. As in field-oriented control scheme, the backstepping analysis generates references for magnetizing flux component and for the speed component of the stator current. The control algorithm is proposed for replacing the existing PI controller to obtain high performance...
This paper deals with a new approach of robust sensorless speed control intended to the induction motors. The speed estimation is done from the double use of the so-called self-control process (SCP) of the induction machine which characterizes the relationship between the stator, rotor and mechanical frequencies. Hence, in this approach, the output torque-current controller generates the so-called...
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