DEVICE FOR COMPENSATING THE MAGNETIC FIELD PRODUCED BY ELECTRIC TRACTION RAILWAYS

摘要

The device is based on the local compensation of the magnetic field fluctuations created by catenary current fluctuations. The device is comprised of a magnetic field sensor which resupplies the compensator circuit to suppress the field in the sensor within a period of time which is shorter than the characteristic time of the fluctuation so that the field is suppressed at any time. The invention relates to a device capable of compensating, originally, the perturbations of the magnetic field in the vicinity of an electric railway line, said perturbations being caused by the catenary power supply variations.