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In this paper, a new variable structure position control law for a Six Phase Induction Machine (6PIM) is proposed. The algorithm based on a time-varying switching line guarantees the existence of sliding mode since the beginning of the shaft motion. Indeed, the surface is initially designed to pass through the initial representative point and subsequently moved towards a predetermined desired surface...
In the paper induction machine (IM) torque control is studied as an example of a three-dimensional non-holonomic integrator that includes drift terms. By expanding Brockett's controller derived for the driftless systems, a control structure is proposed that guarantees natural adjustment of both the amplitude and the frequency modulation of the sinusoidal stator current vector. The rotor flux linkage...
The doubly fed asynchronous machine is among the most used electrical machines due to its low cost, simplicity of construction and maintenance. In this paper, we present a method to synthesize a robust controller of doubly fed asynchronous machine which is the main component of the wind turbine system (actually the most used model), indeed : there is different challenges in the control of the wind...
This paper, presents a Direct Field-Oriented Control (DFOC) of doubly fed induction machine (DFIM) motor mode with a variable structure control based on a sliding mode control (SMC). Our aim is to make the speed and the flux control robust to parameter variations. The use of the nonlinear sliding mode method provides very good performance for motor operation and robustness of the control law despite...
The main goal of increasing the number of phases in an induction machine is to ensure its performance in all the operating modes such as normal, disturbed and faulted settings. When the induction machine is working under a faulted mode such as one or more phases are missing, this leads to a high torque oscillations and bad tracking behaviour. Designing a suitable control design such as sliding mode...
A control structure is proposed to implement a sensorless speed control driving system with induction machine. The rotor speed is estimated by a model reference adaptive system based algorithm with information from stator variables fundamentals (voltages and currents). Influence of machine parameter sensitivity and low speed estimation errors are discussed. Computer simulated results are presented...
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