A deadbeat direct power control applied to doubly-fed induction aerogenerator under normal and sag voltages conditions

In wind energy systems, doubly-fed induction generator is commonly used. The grid requirements for DFIG operation in an occurrence of low voltage ride-through can damage or destroy the converter or damage the generator and its operation can can help the robustness of the power systems by the injection of reactive power. Thus, this paper proposed a deadbeat direct power control for doubly-fed induction generator during low voltage ride-through (LVRT). The controller was designed using the generator model and it allows active and reactive power control also during a voltage sag. The state variables are the active and reactive power, and the inputs are the rotor voltage vector. The controller has a simple implementation and fast dynamic response. Experimental results are obtained to verify the deadbeat direct power controller operation.