Abstract
Extensive use of wind turbine (WT) systems brings remarkable challenges to the stability and safety of the power systems. Due to the difficulty and complexity of modeling such large plants, the model-independent strategies are preferred for the control of the WT plants which eliminates the need to model identification. This current work proposes a novel model-independent control methodology in the rotor side converter (RSC) part to ameliorate low voltage ride through (LVRT) ability especially for the doubly-fed induction generator (DFIG) WT. A novel model-independent nonsingular terminal sliding mode control (MINTSMC) was developed based on the principle of the ultra-local pattern. In the suggested controller, the MINTSMC scheme was designed to stabilize the RSC of the DFIG, and a sliding-mode supervisor was adopted to determine the unknown dynamics of the proposed system. An auxiliary dual input interval type 2 fuzzy logic control (DIT2-FLC) was established in a model-independent control structure to remove the estimation error of the sliding mode observer. Real-time examinations have been carried out using a Real-Time Model in Loop (RT-MiL) for validating the applicability of the proposed model-independent control in a real-time platform. To evaluate the usefulness and supremacy of the MINTSMC based DIT2-FLC, the real-time outcomes are compared with outcomes of RSC regulated conventional PI controller and MINTSMC controller.
Highlights
As the world is experiencing a diminishing trend in terms of fossil fuels and their bad effects on the environment through emitting harmful gases into the atmosphere, wind energy has become the fastest-growing renewable energy source that has an ecofriendly power generation [1,2,3,4,5]
To ameliorate the low voltage ride through (LVRT) ability of the doubly-fed induction generator (DFIG) wind turbine (WT) system, a novel MITSMC based DI2FLC controller was developed for the rotor side converter
This paper develops the novel model-independent nonsingular terminal sliding mode control (MINTSMC) based DIT2-FPI controller to boost the LVRT ability of the DFIG WT plant in a model-independent framework
Summary
As the world is experiencing a diminishing trend in terms of fossil fuels and their bad effects on the environment through emitting harmful gases into the atmosphere, wind energy has become the fastest-growing renewable energy source that has an ecofriendly power generation [1,2,3,4,5]. It can be seen that the rotor speed of the electrical rotor relation in its controller solidifies for minimum magnitude where wind velocity is higher compared to the cut-in value It is smaller than the lower limit to support the generator slip at less than 0.3. It is smaller othf 2a1n the lower limit to support the generator slip at less than 0.3. The stability of the controller will be satisfied by the demand of the Lyapunov theory
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