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A LOW WEIGHT SUPPLY CIRCUIT FOR ASYNCHRONOUS TRACTION FED FROM A 16 2/3 HZ LINE
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| Author(s) |
S. Östlund; F. Gustavson; P. Leander |
| Abstract |
In many traction applications a reduction of vehicle weight is desirable. In vehicles fed from a 16 2/3 Hz line the transformer weight is considerable. By chopping the line voltage, the transformer can be fed with a higher frequency and a substantial reduction of its weight and losses is possible. A supply circuit which changes the line voltage to a higher frequency has been analysed both theoretically and by computer simulations. The system allows operation with a power factor very close to unity and the direction of power flow is arbitrary, that is regenerative braking is also possible. By chopping the line voltage with a frequency of 150 Hz it is possible to reduce the transformer weight and losses to about 1/4 of the corresponding values for a normal 16 2/3 Hz transformer. |
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| Filename: | Unnamed file |
| Filesize: | 3.015 MB |
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| Type |
Members Only |
| Date |
Last modified 2021-02-26 by System |
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