Abstract
In recent years, regulating a wind energy conversion system (WECS) under fluctuating wind speed and enhancing the quality of the electricity provided to the grid has become a hard challenge for many academics. The current research provides a better control strategy to decrease the occurrence of chattering phenomena. Combined with the Maximum Power Point Tracking (MPPT) strategy and a pitch angle control, the control is possible to increase the performance and the efficiency of the Permanent Magnet Synchronous Generator (PMSG) based Wind Energy Conversion System. This study attempts initially to regulate the generator and the grid side converter to track the wind speed reference established by the MPPT algorithm. And secondly, to relieve the chattering problem associated with the conventional sliding mode control (CSMC), the proposed sliding mode control (PSMC) is based on a novel smooth continuous switching control. Besides, the suggested sliding mode control stability is confirmed using Lyapunov’s stability function. The complete system was evaluated in the MATLAB/Simulink (MathWorks, Natick, MA, USA) environment using a 2 MW PMSG’s power, under random fluctuations in the wind speed to show the suggested approach’s efficiency and robustness, which was then compared to the CSMC and other common approaches available in the literature. The simulation results reveal that the recommended sliding mode control approach delivers good speed, accuracy, stability, and output current’s ripple.
Highlights
Nowadays, substantial effort is being made to develop a source of renewable energy as a substitute for fossil fuels and to protect the environment [1]
A comparison between the proposed proposed sliding mode control (PSMC) and other controls has been performed to reveal the superiority of the proposed PSMC (Appendix A Tables A1 and A2) (Figure 6)
This work provided a robust sliding mode control based on a unique smooth continuous function approach to cope with the chattering problem associated with the conventional sliding mode control (CSMC)
Summary
Substantial effort is being made to develop a source of renewable energy as a substitute for fossil fuels and to protect the environment [1]. As a result of this development, WECS based on PMSG has become a research hotspot in wind energy generating [4]. SMC is a sort of nonlinear resilient control that is immune to parameter changes In recent years, it has garnered considerable interest for WECS control due to its ease of implementation, order reduction, and tolerance for external disturbances and parametric perturbations, including suitable wind energy extraction, Direct Current (DC) link wattage maintenance, and direct wind energy power management. The first order Sliding mode control (SMC) is applied to manage both the speed and power of the PMSG-based WECS in [16,17,18]. The authors of [19] investigated an approach for adaptive second-order SMC (SOSMC) This strategy can effectively deal with model uncertainty, WECS’s inherent nonlinear behavior, and random wind.
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