{
  "$type": "site.standard.document",
  "description": "It is described a method for damping an oscillation of a rotational speed (167) of a shaft (129, 135) of a wind turbine (101) having a converter (141) connected between a generator (137) and a wind turbine output terminal (152), the method comprising: measuring the rotational speed (É, 167) of the…",
  "path": "/patents/981987",
  "publishedAt": "2013-11-13T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "F03D7/026",
    "SIEMENS AG [DE]"
  ],
  "textContent": "It is described a method for damping an oscillation of a rotational speed (167) of a shaft (129, 135) of a wind turbine (101) having a converter (141) connected between a generator (137) and a wind turbine output terminal (152), the method comprising: measuring the rotational speed (É, 167) of the shaft (129) or the generator (137); determining a DC-link voltage reference (Udc_ref, 163) varying in dependence with the rotational speed (É, 167); controlling a DC-link voltage (Udc) of a DC-link (145) of the converter (141) according to the DC-link voltage reference (Udc_ref, 163).",
  "title": "Method and arrangement for damping a shaft oscillation"
}