| 摘要 |
The invention relates to a converter provided with a resonant circuit ( 16 ), which comprises a control device ( 24 ) adapted, in connection with a commutation of the phase current (i<SUB>ph</SUB>) from a semiconductor element of turn-off type of a first current valve ( 2, 3 ) to a rectifying member of a second current valve ( 3, 2 ) to effectuate a turn-on of the auxiliary valve ( 18 ) of the resonant circuit with a varaible time delay (t<SUB>d</SUB>) after the turn-off of the first current valve, the converter comprising a member ( 35 ) for determining said time delay in dependence on the magnitude and the direction of the phase current (i<SUB>ph</SUB>) and the magnitude and the direction of a determined unbalance so that the unbalance is corrected at least partly when the control device applies the time delay (t<SUB>d</SUB>). The invention also relates to a method for controlling such a converter. |
