Optimal control scheme for flicker mitigation in large-scale pmsg based wind energy conversion systems

Abstract EN

With increasing penetration of large-scale wind energy conversion systems (WECS) into the grid, the power quality issues of these systems are greatly concerned by the power system management and control.

The quality of the output power of the WECS is affected by the flicker in output voltage due to variation of wind speed, effect of wind turbine tower and wind shear.

In this paper, an optimal control scheme is presented to mitigate the flicker in the output voltage of a permanent magnet synchronous generator (PMSG) based WECS.

A linear quadratic regulator (LQR) controller is designed and simulated on 2 MW PMSG modeling using MATLAB/Simulink and MATLAB Control Toolbox.

The Performances of the optimal LQR controller are assessed and discussed by means of the simulation for achieving the mitigation of the wind power system flicker in the output voltage and output power.

Simulation results show the improvement in the quality of the output power of PMSG based WECS through using the proposed control scheme.