A Fractional Controller based VSG Control of PMSG based Wind Turbine to Improve Frequency Response

The massive incorporation of renewable energy sources (RES) through power electronic converters into the grid leads to a degradation in the power system’s frequency response. To address this pressing concern, the paper proposes a fractional controller-based virtual synchronous generator (VSG) control system for a permanent magnet synchronous generator (PMSG) based wind turbine, aiming to enhance the system’s frequency response. Initially, the fractional controller is replaced with the conventional integral term of the VSG control. Subsequently, an optimal value for the fractional controller term is determined. By incorporating a fractional controller with VSG control provides an additional degree of freedom, thereby enhancing the frequency response of the system. Several simulation case studies have been demonstrated in the Matlab/Simulink platform to showcase the effectiveness of the proposed approach in contrast to the conventional VSG control for PMSG wind turbines.