(19)

(11)

EP 4 551 808 A1

(12)

(43) Date of publication: 14.05.2025 Bulletin 2025/20 (21) Application number: 23738622.2 (22) Date of filing: 28.06.2023

(51) International Patent Classification (IPC):  F03D 1/06(2006.01) (52) Cooperative Patent Classification (CPC): F03D 1/066 (86) International application number: PCT/DK2023/050169 (87) International publication number: WO 2024/008258 (11.01.2024 Gazette 2024/02)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC ME MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA Designated Validation States: KH MA MD TN (30) Priority: 07.07.2022 DK PA202270365 (71) Applicant: VESTAS WIND SYSTEMS A/S 8200 Aarhus N (DK)	(72) Inventors: NIELSEN, Jens Bredal 8200 Aarhus N (DK) KRISTENSEN, Nicolaj Biltoft 8200 Aarhus N (DK) (74) Representative: Vestas Patents Department  Hedeager 42 8200 Aarhus N 8200 Aarhus N (DK)