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In a conventional direct torque control (CDTC) of the induction motor drive, the electromagnetic torque and the stator flux are characterized by high ripples. In order to reduce the undesired ripples, several methods are used in the literature. Nevertheless, these methods increase the algorithm complexity and dependency on the machine parameters such as the space vector modulation (SVM). The fuzzy...
In the conventional Direct Torque Control (DTC) the stator flux and the electromagnetic torque have high ripples due to the switching frequency variations. To fix it, the Space Vector Modulation (SVM) is used in this paper. This paper aims firstly to develop a novel DTC-SVM structure based Sliding Mode (SM) controllers to overcome the DTC-SVM based PI controllers limitations, such as the sensitivity...
In this paper, we are interested in a nonlinear control of a wind farm connected to the electrical network based on permanent magnet synchronous generator. This control has two main objectives. Firstly, since the major problem of wind energy is the fluctuation of its primary source, to solve this problem, we develop in this study a control approach applied to this wind farm to ensure balance between...
This paper discusses a robust control of a wind energy conversion chain based on a Permanent Magnet Synchronous Generator. This command is evaluated in the context of controlling the speed of PMSG and to control the active and reactive power injected into the grid, to increase the power generated and thus improve the efficiency of wind power system. A non-linear controller was implanted. The control...
This research work deals with the real time implementation on an Field Programmable Gate Array (FPGA) of the Direct Torque Control (DTC) of an Induction Motor (IM) utilizing a Sliding Mode controller (SMC) of the rotor speed. In several industrial applications, the speed is controlled by a Proportional Integral (PI) regulator, because of its simplicity. However, because of the model uncertainties...
In this paper an improvement of the Conventional Direct Torque Control (CDTC) of an induction motor is presented using the artificial intelligence to control the motor speed and an implementation on the FPGA (Field Programmable Gate Array). The conventional Proportional Integral (PI) controller of speed is widely used in industry due to its simplicity and robustness, but when the dynamics of the system...
The aim of this paper is to present a digital implementation of the direct torque control (DTC) of an induction motor with a constant switching frequency using the field programmable gate array (FPGA) component. The FPGA is used in order to overcome the digital Signal Processing And Control Engineering (dSPACE) limitations such as the sequential processing which increase the sampling time. The Conventional...
The Conventional Direct Torque Control (CDTC) of Induction Motor (IM) with an open loop estimator of stator flux suffers from problem like the correction of measurement errors of the stator current and estimation errors of stator flux and the problem of integration particularly at low speeds. To solve these problems, we use the high gain observer (HGO). This observer is used to estimate the stator...
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