Modeling of Wind Turbines with Doubly Fed Generator SystemJens Fortmann describes the deduction of models for the grid integration of variable speed wind turbines and the reactive power control design of wind plants. The modeling part is intended as background to understand the theory, capabilities and limitations of the generic doubly fed generator and full converter wind turbine models described in the IEC 61400 27 1 and as 2nd generation WECC models that are used as standard library models of wind