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15 kV/16.7 Hz energy supply system with medium frequency - transformer and 6.5kV IGBTs in resonant operation
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| Author(s) |
B. Engel; M. Victor; G. Bachmann; A. Falk |
| Abstract |
For modern railway vehicle concepts a conventional 15 kV / 16.7 Hz transformer causes integration problems due to its high mass and volume. To reduce the weight by approx. 50 % and the volume by 30 % a new topology was developed using a medium frequency transformer. Connected to the 15 kV / 16.7 Hz line eight cascade modules, consisting each of a four-quadrant converter, a 3.6 kV DC link and a resonant converter, feed the 5 kHz transformer. All switching elements in the cascade mod-ules are advanced 6.5 kV IGBT with new gate drivers. Therefore different short circuit tests were per-formed. On the secondary side a resonant switched four-quadrant converter is feeding in the vehicle 1.65 kV DC link with 2f-filter. The power and control electronic system including the control strategy are described in detail. The first results in 15 kV operation are presented. The mechanical design is based on an innovative glass fibre reinforced plastic (GRP) case design providing good insulation and low weight. The first application will be the hybrid multiple unit LIREX Experimental (class VT 618/619 of DB Regio). |
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| Filename: | EPE2003-PP1192 - Engel |
| Filesize: | 1.405 MB |
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| Type |
Members Only |
| Date |
Last modified 2003-12-08 by Unknown |
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