Power Quality Improvement of Three-Phase Grid Interfaced WEGS Based on TOFFA Filter

For power quality improvement, a third order fundamental filtering approach (TOFFA) is utilized under unusual conditions on a three-phase utility grid, which is connected with a wind energy generation system (WEGS).A TOFFA based filtration technique is designed for fundamental components extraction. Due to nonlinear loads and use of converters, harmonics are injected into the grid. The system's primary goal is to deliver active power to the three-phase grid while reducing power quality concerns such as current harmonics, dc offset inaccuracy, and so on. For maximum power point (MPP) tracking the perturb and observe (P&O) method is used in WEGS. The system behavior is observed under dynamic loading condition and variable wind speed condition on a developed prototype in MATLAB/Simulink. The given system's performance has been determined to be satisfactory with the grid current total harmonics distortion (THD) as per the IEEE 519-2014 standard.