(19)

(11)

EP 4 409 613 A1

(12)

(43) Date of publication: 07.08.2024 Bulletin 2024/32 (21) Application number: 22786913.8 (22) Date of filing: 16.09.2022

(51) International Patent Classification (IPC):  H01F 27/02(2006.01) H01F 27/28(2006.01) H01F 27/08(2006.01) (52) Cooperative Patent Classification (CPC): H01F 27/025; H01F 27/085 (86) International application number: PCT/EP2022/075723 (87) International publication number: WO 2023/052145 (06.04.2023 Gazette 2023/14)

(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 MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA ME Designated Validation States: KH MA MD TN (30) Priority: 01.10.2021 SE 2151206 (71) Applicant: ALSTOM Holdings 93400 Saint-Ouen-sur-Seine (FR)	(72) Inventor: DIEDRICHS, Ben 172 40 Sundbyberg (SE) (74) Representative: Bjerkén Hynell KB  P.O. Box 1061 101 39 Stockholm 101 39 Stockholm (SE)