1984
article
OpenAlex
A Cossie
Components of power electronics, modern insulation techniques and semiconductor cooling techniques are extensively used in electric tractive units of the S. N. C. F. The development of the drive techniques leads to the commutator-less three-phase current traction motor. The motor with voltage …
1983
article
OpenAlex
A Cossie
In the first article the author begins by explaining the advantages of a traction system comprising a self-driven synchronous motor fed from a current inverter. He continues with a simplified description of the operation of this equipment and the methods that can …
1977
article
OpenAlex
A Cossie
After using the asynchronous motor for some twenty years, the SNCF has carried out tests for supplying current by means of a static converter on an experimental unit consisting of a CC 14000 locomotive and a powered luggage van. The author reviews …
1977
article
OpenAlex
R Dupont, A Cossie
The SNCF has developed a new motor truck, the Y226 for high speeds of up to 300 km/h. For tests with this truck, the Z 7001 was built using mechanical and electronic parts already in existence. First, the author describes the structural …
1976
article
OpenAlex
A Cossie
These high speed trainsets are of the dual current type (25 kV 50 Hz and 1,500 V direct current) with two power cars and eight trailer cars mounted on thirteen bogies, six of which are motor bogies. Each motor bogie is driven …
1975
article
OpenAlex
A Cossie
After having summed up the recent evolution which has made it possible to reach and even to exceed the limit of 200 km/h, the author examines the types of electric rotating motors which may be envisaged for rail propulsion at a higher …
1974
article
OpenAlex
A Cossie
Single-phase vehicles are discussed and their basic circuit diagrams analyzed. These incorporate thyristors which are used for: voltage control, the control of the induction field, and protection against excessive speed. Direct-current motor vehicles are also analyzed and the functions of the incorporated …
1973
article
OpenAlex
A Cossie
This article describes some experimental thyristor control systems on the French National Railroads. Details are given of installations on both multiple unit equipment and on locomotives. Test results are discussed.
1973
article
OpenAlex
A Cossie
In the first article, the author, Ingenieur Principal at the SNCF, explains how the use of the thyristor in direct-current applications has enabled a purely static voltage regulation to be achieved and consequently ensure that the basic traction functions are reliable, a …