Patent ID: 11898538
Assignee: WOBBEN PROPERTIES GMBH
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC F  G  H  Y | IPC F  G  H

Claim 12:
13. A wind turbine or wind farm for feeding electrical power into an electrical supply grid and for damping low frequency oscillations in the electrical supply grid, comprising:
an inverter having an inverter output configured to feed electrical power into the electrical supply grid; and
a controller configured to:
determine a supplementary component for damping the low frequency oscillations;
generate a simplified model of a synchronous machine, wherein the simplified model is limited to emulating a subset of a plurality of properties;
enter, into the simplified model, at least one instantaneous value of a voltage measurement at the inverter output, in the electrical supply grid or at a point between the inverter output and the electrical supply grid; and
determine the supplementary component depending on the simplified model of the synchronous machine, and

wherein the inverter is configured to additionally feed the supplementary component into the electrical supply grid to damp the low frequency oscillations, and
wherein
the simplified model of the synchronous machine reproduces an oscillation damping property of a damper cage of the synchronous machine, and
vibratory components of the synchronous machine on which the simplified model is based are not depicted or depicted having been attenuated.