Implementation of primary frequency regulation on fully rated wind turbine generators

© 2017 IEEE. The increased integration of wind generation via high power converters imposses numerous gauntlet to the management and control of modern power systems. One of them is caused by the decoupling effect between the power sources from the AC grid. It negatively impacts the system frequency response of modern power systems. This paper proposes a controller to enable the primary frequency regulation on fully rated wind turbine generators. The proposed controller is designed to enable primary frequency response mimiquing the classical syncrhonous generator controles. It includes a droop control and an other to enable the inertia response. Simulations on a test system are used to examine the frequency response provided by the prioposed strategy. The most important contributions of this paper is to demonstrate there is an actual limit value of the synthetic inertia gain that can be used in the controllers and that it is dependent on the system frequency noise

A two frame feedback linearization scheme for the control of fully rated wind generating units

The present paper proposes an innovative control scheme for a fully rated wind generating unit equipped with a permanent magnet synchronous generator. The main objective of this control strategy is that of allowing a decoupled and dynamically performing control of active power (by the MPPT curve) and reactive power at the point of interconnection to the grid. Moreover, the control will be able to integrate frequency supporting logics, such as synthetic inertial control and active power curtailment. The control synthesis is fully detailed and validated by means of dedicated simulations in comparison with the traditional control scheme for this type of wind generators