Dynamic analysis of wind turbines considering new grid code requirements

E.ON Netz new grid code requires the ability from the wind turbines to remain connected to the network when terminal voltage level drops to zero for at least 150 ms. Moreover, wind turbines must also contribute with voltage regulation during and after grid faults. A comparative study analyzing the dynamic behavior of conventional versions of wind turbines based on doubly-fed induction generator and on permanent magnet synchronous generator is presented in this paper. Computational simulations have showed that wind turbine based on PMSG can contribute with more injection of reactive power to the network. The converters nominal power and the strategy of its current controllers can impact the dynamic behavior of wind turbines.