CPEM_2020_Chopped waveforms_v2.0.pdf (519.26 kB)
Download file

Calibrating Sensors to Measure Braking Chopper Currents in DC Traction Units

Download (519.26 kB)
posted on 2020-12-30, 22:58 authored by Helko van den BromHelko van den Brom, Ronald van Leeuwen
A large part of the energy involved in the braking stage of conventional DC railway traction units is dissipated in rheostat resistors, which is controlled by means of a braking chopper. A setup was developed to calibrate transducers used to measure the resulting high-current chopped DC current signals under conditions mimicking the real application. Preliminary results indicate that the reference transducer used in this setup can accurately measure chopped signals with magnitudes up to at least 250 A and pulse repetition rates up to 500 Hz with uncertainties better than 0.01 %.


European Metrology Programme for Innovation and Research (EMPIR)


Email Address of Submitting Author

ORCID of Submitting Author


Submitting Author's Institution


Submitting Author's Country

  • Netherlands