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EP 4 816 693 A1

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(43) Date of publication: 07.10.2026 Bulletin 2026/41 (21) Application number: 25701795.4 (22) Date of filing: 15.01.2025

(51) International Patent Classification (IPC):  F03D 7/04(2006.01) F03D 17/00(2016.01) F03D 9/25(2016.01) (52) Cooperative Patent Classification (CPC): F03D 7/048; F03D 7/0284; F05B 2270/335; F03D 17/00; F03D 9/257; F03D 17/026; F03D 17/021; F03D 17/007; Y02E 10/72 (86) International application number: PCT/EP2025/050924 (87) International publication number: WO 2025/153551 (24.07.2025 Gazette 2025/30)

(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: GE KH MA MD TN (30) Priority: 19.01.2024 EP 24382049 (71) Applicant: Siemens Gamesa Renewable Energy Innovation & Technology S.L. 31621 Sarriguren (Navarra) (ES)

(72) Inventors: GREEN, Robert Orlando, Florida 32826 (US) MARTINEZ MENDOZA, Fernando Roque 31600 Burlada (ES) NIEGOWSKI, Maciej Marek 31699 Olloki (ES) PAPPALA, Venkata Swaroop 22457 Hamburg (DE) PASMA, Tjip 7600 Struer (DK) YASHCHENKO, Sergey 22607 Hamburg (DE) (74) Representative: SGRE-Association  Siemens Energy Global GmbH& Co. KG SE CD I IP Intellectual Property Siemenspromenade 9 91058 Erlangen 91058 Erlangen (DE)