(19)

(11)

EP 4 573 649 A1

(12)

(43) Date of publication: 25.06.2025 Bulletin 2025/26 (21) Application number: 22960395.6 (22) Date of filing: 30.09.2022

(51) International Patent Classification (IPC):  H02P 3/18(2006.01) (52) Cooperative Patent Classification (CPC): H02P 1/027; H02P 3/22; H02M 1/36 (86) International application number: PCT/CN2022/123522 (87) International publication number: WO 2024/065783 (04.04.2024 Gazette 2024/14)

(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 (71) Applicant: Siemens Aktiengesellschaft 80333 München (DE)	(72) Inventor: ZHANG, Jun Ping Nanjing, Jiangsu 211100 (CN) (74) Representative: Isarpatent  Patent- und Rechtsanwälte Barth Hassa Peckmann & Partner mbB Friedrichstraße 31 80801 München 80801 München (DE)