Wind Farm Stabilization with Dual-Purpose Doubly-Fed Asynchronous Machine

This paper investigates the function of proposed dual- purpose DASM (Doubly-fed Asynchronous Machine) with emphasis placed on its ability to the maximum power tracking and to the stabilization of the power system including IG wind generators. P (active power) and Q (reactive power) compensation from DASM can be regulated independently through secondary-excitation controlling. Simulation results by PSCAD show that DASM can restore the wind-generator system to a normal operating condition rapidly even following severe transmission-line failures. Comparison studies have also been performed between IG-alone wind farm and proposed system.