Sine Cosine Algorithm (SCA)-Based on Grid-Connected Doubly Fed Induction Generator (DFIG) Performance Analysis for Shunt Active Power Filter (SAPF)

Integration of the wind power into the electrical grid to improve grid flexibility with additional generation capacity can also affect the quality of the power, like voltage variations and harmonics. To solve this issue, a grid-side converter has been used like a shunt active power filter (SAPF), mitigating grid current harmonics generated by nonlinear loads while simultaneously managing bidirectional power flow between the grid and the rotor of the doubly fed induction generator (DFIG). The SAPF is controlled using the predictive current control and is supplied by a wind energy system through a DC-link capacitor. This paper presents a modified grid-side converter (GSC) control technique using the sine cosine algorithm (SCA) by tuning the PI regulator’s parameters that is designed to keep the constant DC bus voltage and to compensate for system losses. The efficacy of the proposed control approach is modeled and verified according to MATLAB/Simulink, and it offers significant potential for enhancing power quality efficiency, minimizing grid harmonics, and boosting system robustness.