| 摘要 |
The invention relates to a converter provided with a resonant circuit ( 16 ), which converter comprises a device ( 31 ) for measuring the derivative (dI/dt) of the current through the current valves 82, 3 ) and a detection device ( 32 ) co-operating with said measuring device ( 31 ) for detecting a short-circuit in the converter, the detection device ( 32 ) being adapted to detect a short-circuit current when the current derivative (dI/dt) measured by the measuring device ( 31 ) is equal to or exceeds a stipulated current derivative limit value (dI/dt<SUB>lim</SUB>) during a length of time exceeding a stipulated time limit value (t<SUB>lim</SUB>). The invention also relates to a method for controlling such a converter. |
