DocumentCode :
799417
Title :
Thyristor Converters for Traction DC Motor Drives
Author :
Bezold, Karl-Heinz ; Forster, Johannes ; Zander, Hilmar
Author_Institution :
AEG-TELEFUNKEN, Berlin, Germany.
Issue :
5
fYear :
1973
Firstpage :
612
Lastpage :
617
Abstract :
Based on tests in laboratories and on German Federal Railways (GFR) trial vehicles type ET 25 as well as on an industrial locomotive type 500 of the Rheinische Braunkohlen AG the subsequent development has been concentrated on the improvement of the power factor ¿ and the displacement factor cos ¿ in four vital stages: 1) introduction of half-control, unsymmetrical half-controlled, fully-controlled single-phase bridge connection with specially designed control systems: 2) introduction of sequence connection of several half-controlled bridges; 3) optimization of the so far applied connections for major assemblies such as rectifier transformer, rectifier, and smoothing reactor for improving the power factor; 4) introduction of sector control with self-commutating unsymmetrical bridge for improving the power factor.
Keywords :
Automatic testing; Bridges; Control systems; DC motors; Displacement control; Laboratories; Reactive power; Rectifiers; System testing; Thyristors;
fLanguage :
English
Journal_Title :
Industry Applications, IEEE Transactions on
Publisher :
ieee
ISSN :
0093-9994
Type :
jour
DOI :
10.1109/TIA.1973.349948
Filename :
4158449
Link To Document :
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