(19)
(11) EP 4 385 810 A8

(12) CORRECTED EUROPEAN PATENT APPLICATION
published in accordance with Art. 153(4) EPC

(15) Correction information:
Corrected version no 1 (W1 A1)

(48) Corrigendum issued on:
21.08.2024 Bulletin 2024/34

(43) Date of publication:
19.06.2024 Bulletin 2024/25

(21) Application number: 22855448.1

(22) Date of filing: 09.08.2022
(51) International Patent Classification (IPC): 
B60M 5/00(2006.01)
 B60M 3/00(2006.01)
(52) Cooperative Patent Classification (CPC):
B60M 5/00; B60M 3/00
(86) International application number:
PCT/CN2022/111226
(87) International publication number:
WO 2023/016467 (16.02.2023 Gazette 2023/07)
(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: 13.08.2021 CN 202110935584

(71) Applicants:
  • Ma, David
    Cherrybrook, New South Wales 2126 (AU)
  • Ma, Jun
    Guangzhou, Guangdong 510360 (CN)
  • Pang, Steven Yuxiang
    Auckland, 0632 (NZ)

(72) Inventors:
  • PANG, Steven Yuxiang
    Auckland, 0632 (NZ)
  • MA, Jun
    Guangzhou, Guangdong 510360 (CN)

(74) Representative: Winter, Brandl - Partnerschaft mbB 
Alois-Steinecker-Straße 22
85354 Freising
85354 Freising (DE)

   


(54) METHOD FOR REDUCING STRAY CURRENT PRODUCED BY POWER SUPPLY BACKFLOW FOR SUBWAY WALKING RAIL


(57) A system and a method for reducing stray current produced by power supply backflow for a subway walking rail, which is suitable for a power supply system of a rail backflow used by a direct-current power supply subway train. A parallel inductor, a super capacitor, an IGBT switch, a contactor, and the like are used to form a connection branch, and intelligently control the connection and flowing direction of a current, to effectively filter harmonic components of a backflow, so that leakage of harmonic components of a tray current produced by harmonic waves generated by an inverter switch circuit of the train to the outside of the walking rail can be effectively reduced, thereby preventing other facility devices from being harmed by electrochemical corrosion.