US 11,788,508 B2
Method for controlling a wind power installation
Ingo Mackensen, Aurich (DE); Stefan Gertjegerdes, Aurich (DE); and Christian Strafiel, Aurich (DE)
Assigned to Wobben Properties GmbH, Aurich (DE)
Filed by Wobben Properties GmbH, Aurich (DE)
Filed on Jan. 8, 2021, as Appl. No. 17/144,818.
Claims priority of application No. 10 2020 100 715.9 (DE), filed on Jan. 14, 2020.
Prior Publication US 2021/0215135 A1, Jul. 15, 2021
Int. Cl. G01R 31/00 (2006.01); F03D 7/02 (2006.01); F03D 9/25 (2016.01); G01R 19/00 (2006.01); G01R 27/16 (2006.01); H02J 3/38 (2006.01); H02J 3/44 (2006.01)
CPC F03D 7/0284 (2013.01) [F03D 9/255 (2017.02); G01R 19/0038 (2013.01); G01R 27/16 (2013.01); H02J 3/381 (2013.01); H02J 3/44 (2013.01); H02J 2300/28 (2020.01)] 10 Claims
OG exemplary drawing
 
1. A method for controlling a wind power installation, comprising:
measuring a grid voltage of an electrical power supply grid over a period of time, and
setting a DC-link voltage at a converter of the wind power installation depending on the measured grid voltage and according to a first time constant over the period of time and a second time constant over the period of time,
wherein the first time constant is different than the second time constant,
operating the converter of the wind power installation at the DC-link voltage setting; and
establishing a positive grid voltage change or a negative grid voltage change depending on the measured grid voltage,
wherein the first time constant is assigned to the positive grid voltage change, and
wherein the second time constant is assigned to the negative grid voltage change.