Abstract: A power generation facility includes at least one generator which has a converter on the generator side and a converter on the network side and which is connected by the converters to an alternating voltage network on the power plant side. A rectifier connects the alternating voltage network on the power plant side to a DC transmission line. An inverter on the energy network side connects the DC transmission line to an energy network operating on the basis of alternating voltage. A control unit is configured to control the converter on the generator side and the converter on the network side of the at least one generator, at least on the basis of DC current and/or DC voltage measurement values measured on the DC transmission line. A method for operating a power generation facility is also provided.

Abstract: A method and arrangement for controlling a doubly-fed induction machine by a frequency converter including a rotor side converter (INU) connected to a rotor circuit of a doubly-fed induction machine (DFIG) and having a control system with rotor flux as a feedback variable, a grid side converter (ISU) connected to an AC power network, and a direct voltage intermediate circuit (DC) connected between the rotor side converter (INU) and the grid side converter (ISU). The method includes forming a rotor flux reference (?r,ref), forming a damping signal (?ref,D), summing the damping signal and the rotor flux reference for obtaining a modified rotor flux reference (?ref), and feeding the modified rotor flux reference to a controller of the rotor side converter (INU) for damping sub-synchronous resonances.