Damping control of PMSG-based wind turbines for power system stability enhancement

This paper investigates the control scheme of the permanent magnet synchronous generator (PMSG)-based wind turbines to damp the power system oscillations. Above all, a novel fault ride through control strategy based on the energy transmission is proposed to maintain the dc side voltage of the full scale power converter during grid faults and the damping control process. Following that, a further investigation on the system damping enhancement through the power regulation of the wind turbine is discussed. The active power and the reactive power damping control schemes are also designed, respectively. Finally, simulation results show that with the proposed control strategies, the PMSG-based wind farms not only have the fault ride through ability, but can significantly enhance the power oscillation damping.