Cooperated stabilizing control of PMSG based grid connected wind farm

This paper proposes a control system design for cooperated stabilizing control of PMSG based grid connected wind farm. In this study, a wind farm composed of PMSGs and SCIGs is considered to be connected to multi-machine power system. Though outputs of the SCIG based wind turbines are collected on AC network, PMSG based wind turbines are integrated in DC network with single grid side converter. In order to contribute to frequency and voltage stabilizing control, controller system of the inverter is modified in order for its active and reactive powers to be delivered to the grid easily and effectively. Simulation analysis is performed by using PSCAD/EMTDC, in which comparative analysis between proposed control strategy and conventional strategy is performed.