Oscillation phnenomena in the traction current circuit prepared by ORE Specialists Committee A 122

Untersuchung der Ausbreitung und überlagerung von Stromrichter Oberschwingungen im Bahnnetz 16 2/3 Hz sowie von Möglichkeiten zur Dämpfung der Fahrleitungsresonanzschwingungen, aufgestellt vom ORESVA A 122

Theoretical investigations to determine the disturbances of signalling and communication installations caused by thyristorcontrolled locomotives

Investigation of tractive units equipped with choppers Test with several railcars on the 3 kV d.c. system of the SNCB

Studies and results of interference caused by thyristor locomotives working on 25 kV, 50 and 60 Hz

Studies with d.c. chopper controlled trainsets Tests on the NS 1,5 kV d.c. power supply system

Studies of a.c. thyristor locomotives for 15 kV 16 2/3 Hz cycles and the effect on 100 Hz trackcircuit installations (tests with ÖBB locomo tive 1043)

Investigation of the effects of harmonics in catenary contact wires on high voltage supply networks

Tests with a series 420 16 2/3 Hz a.c. trainset equipped with different asymmetric thyristor bridges with controlled turnoff

Progress of work and summary of results relating to interference from thyristor control systems