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.

Method and system for monitoring a pantograph of a railway vehicle and railway vehicle

The electric traction vehicle with overhead power supply has a current monitoring system in the high voltage input side of the transformer. The primary transformer current operates on threshold level switches which are coupled to solid stage control circuits. These operate the protection loops which prevent damage to the drive system if the pick-up contacts start to lift off the conductors e.g. at high speed. The system is more responsive than relay protection in the secondary circuits of the transformer.

Schacher Roger

Papers

Anti-arcing control for electric train pickup - has current monitoring control on primary current converter