Robust Control of DFIG-Based WECS Integrating an Energy Storage System With Intelligent MPPT Under a Real Wind Profile

Abstract

This research work addresses the challenge of controlling a wind energy conversion system (WECS) connected to the grid, which incorporates a battery energy storage system and operates under varying real wind speed profiles. The system comprises a Doubly-Fed Induction Generator (DFIG) connected to the grid through an AC/DC/AC converter, along with a Li-ion battery pack storage unit linked to the Back-to-Back converter DC via a DC/DC converter. The study highlights that internal parametric variations and the non-linear behavior of the wind turbine negatively affect the energy quality produced, as well as the battery charging performance and its overall lifespan. To overcome these issues, the research proposes a robust control strategy based on Integral action Sliding Mode Control (ISMC) to independently manage the powers of the WECS, particularly the DFIG, to enhance dynamic performance. Furthermore, effective battery charging and discharging controllers are crucial for efficiently distributing the generated power to both the grid and the storage unit, ensuring proper energy extraction and battery charging/discharging. Depending on the battery's State of Charge (SOC), the available extracted energy, and the power injected into the grid, two current regulation modes are employed: buck charging mode and boost discharging mode. A storage system energy management algorithm is then utilized to determine the appropriate charging mode, ensuring battery safety. To validate the system's performance, a 1.5 MW wind power conversion system is tested using Matlab/Simulink simulations. The results demonstrate the robustness and efficiency of the proposed control approach in enhancing the overall system's performance.

Enhancing the control of doubly fed induction generators using artificial neural networks in the presence of real wind profiles

“…Various types of generators are used in wind energy production, including asynchronous, synchronous, DC, and doubly-fed induction generator (DFIG) [7][8][9][10]. Presently, the most prevalent generator type employed in wind turbine systems is the doublyfed induction generator [11][12][13], which offers an extensive range of advantages [14]. In this system, the rotor windings of the generator are connected to the power grid via an AC-DC-AC converter, while the stator windings are interconnected in series with the grid.…”

Heat transfer characteristics in Williamson fluid flow in a vertical channel with chemical reaction and entropy production

“…Entropy, a key thermodynamic irreversibility parameter, occurs in the second law of thermodynamics. The analysis of entropy production makes a significant contribution to thermal systems design decisions and thus supports in optimization of cost and energy in science and engineering areas like the cooling of electronic devices, heat exchangers, energy storage systems (Yessef et al [51], Chojaa et al [52], Loulijat et al [53], and Hamid et al [54]), etc. Bejan [55,56] presented pioneering work on entropy production and its optimization.…”

Robust Control System for DFIG-Based WECS and Energy Storage in reel Wind Conditions

“…The world is prioritizing renewable energy to address climate change and achieve carbon neutrality. Morocco, along with many other countries, is actively increasing its use of renewable energy sources as a response to global warming [1,2]. Morocco has set ambitious targets, aiming to surpass 52% renewable energy utilization and 20% wind power generation by 2030 [3].…”