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(11)

EP 4 335 028 A1

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(43) Date of publication: 13.03.2024 Bulletin 2024/11 (21) Application number: 21939929.2 (22) Date of filing: 11.06.2021

(51) International Patent Classification (IPC):  H02P 27/08(2006.01) H02J 5/00(2016.01) H02J 7/14(2006.01) H02P 5/74(2006.01) (52) Cooperative Patent Classification (CPC): H02J 1/102; H02J 7/34; H02J 3/381; H02J 2300/28 (86) International application number: PCT/SG2021/050337 (87) International publication number: WO 2022/235202 (10.11.2022 Gazette 2022/45)

(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: 05.05.2021 WO PCT/SG2021/050246 (71) Applicant: SWTS Pte. Ltd. Singapore 629654 (SG)	(72) Inventor: LEONG, Kum Seng Singapore 439578 (SG) (74) Representative: Mewburn Ellis LLP  Aurora Building Counterslip Bristol BS1 6BX Bristol BS1 6BX (GB)