Wind turbine systems are one of the main energy generation technologies in the journey of electricity infrastructures transition towards renewable energies. Conventional power plants' substitution by wind turbines in the grid requires the wind turbine's grid side inverter robustness against voltage distortion in the grid. These distortions can be because of transmission line impedance unbalance or other equipment in the grid causing synchronization or grid connection problems. This project analyzes the importance of filtering the voltage distortion using existing solutions, for instance, MSRF-PLL. The theory, conducted and simulated case studies, and experimental results to analyze the stability and performance of the controller are analyzed to address the MSRF-PLLs capability in maintaining grid connection during distorted grid voltage conditions.