公开(公告)号：US20170131337A1

公开(公告)日：2017-05-11

申请号：US15346128

申请日：2016-11-08

Applicant: Alstom Transport Technologies

Inventor： Davide Barlini ,  Donato-Carlo Loguercio

IPC: G01R31/00 ,  B60L3/00 ,  G01R31/14 ,  B60L5/04

CPC classification number: G01R31/008 ,  B60L3/0023 ,  B60L5/045 ,  B60L5/24 ,  B60L2200/30 ,  B60M1/12 ,  G01R31/04 ,  G01R31/14 ,  G01R31/44

Abstract: A system for monitoring a pantograph of a railway vehicle, the pantograph being adapted to be connected to a catenary and electrically connected to a traction unit, the catenary being adapted to provide an alternating current to the railway vehicle, the system further including: a voltage step detection device for detecting a voltage step of a pantograph voltage at the pantograph, a zero crossing detection device for detecting a zero crossing of a line current, the line current being a portion of a pantograph current provided to the traction unit, the pantograph current being the current flowing through the pantograph; and a bouncing detection portion adapted to determine at least one bouncing time of the pantograph based on one or more detected voltage steps of the voltage step detection device and/or one or more detected zero crossings of the zero crossing detection device.

公开(公告)号：US10048303B2

公开(公告)日：2018-08-14

申请号：US15346128

申请日：2016-11-08

Applicant: Alstom Transport Technologies

Inventor： Davide Barlini ,  Donato-Carlo Loguercio

IPC: G01R31/00 ,  B60L5/04 ,  B60L3/00 ,  G01R31/14

Abstract: A system for monitoring a pantograph of a railway vehicle, the pantograph being adapted to be connected to a catenary and electrically connected to a traction unit, the catenary being adapted to provide an alternating current to the railway vehicle, the system further including: a voltage step detection device for detecting a voltage step of a pantograph voltage at the pantograph, a zero crossing detection device for detecting a zero crossing of a line current, the line current being a portion of a pantograph current provided to the traction unit, the pantograph current being the current flowing through the pantograph; and a bouncing detection portion adapted to determine at least one bouncing time of the pantograph based on one or more detected voltage steps of the voltage step detection device and/or one or more detected zero crossings of the zero crossing detection device.