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LIGHT WEIGHT DC/DC CONVERTERS FOR HIGH-SPEED TRACTION APPLICATIONS
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| Author(s) |
A. Farini; F. Fuga; R. Manigrasso; M. Ubaldini |
| Abstract |
The Italian high speed traction system forsees the use of a supply system with a dc medium voltage (12 kV), higher than the actual one (3kV), in order to improve the captation on board of the current and to maintain a conveniant distance between substations. The new high speed system locomotives, which should be compatible with the old supply system, will require an on-board dc/dc power converter with ratio 12kV / 3kV and power in the order of some MVA. The weight of the converter should be kept low because the weight of the locomotive must be reduced as much as possible in order to limit the dynamic stress of the rails at high speed (300 km/h). This paper presents two medium frequency power transformers (1kHz - 1.1 MVA) specially designed for a dc/dc converter (12 kV / 3kV). One has a core cooled by means of radiators filled with boiling freon and the other by means of forced circulating oil. Experimental results of two prototypes are also produced. |
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| Filename: | Unnamed file |
| Filesize: | 3.157 MB |
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| Type |
Members Only |
| Date |
Last modified 2021-02-24 by System |
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