Wind speed estimation MPPT technique of DFIG-based wind turbines theoretical and experimental investigation

Many researchers presented the theoretical analysis of the doubly fed induction generator (DFIG) based wind turbines, while the experimental setup is more valid but remains a big challenge. Besides, wind power systems' most significant problem is how to get the most valuable energy with different wind speeds. Using wind speed sensors is a challenging operation in wind turbines due to the complicated maintenance and high cost. Therefore, This paper proposes an efficient and usable control system based on the WSE method to achieve the MPPT from DFIG under variable wind speed in different conditions. This paper also presents a DFIG based wind turbine as simulation and experimental investigation models. The simulation model of DFIG with their control schemes is implemented in MATLAB/SIMULINK software. While the experimental model is performed on a real prototype scale. Finally, a comparison of the simulation and experimental results was carried out to prove the practicability and validity of the proposed WSE method. Also, the simulation results show that the performance of the proposed WSE method is better than the traditional power signal feedback method.