Method and device for switching on power switch arranged between capacitive elements
AssigneeSiemens Aktiengesellschaft
InventorsStephan Bolz, Rainer Knorr, Gunter Lugert
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Abstract
The invention relates to a method and a device for switching on a power switch (S1, S2) arranged between capacitive elements (C1, DLC, B36) a choke (L) being connected in parallel to the switching contacts of the still open power switch (S1, S2). Said choke enables compensating currents to flow between the elements (C1, B36, DLC) to be interconnected and to decay before the power switch (S1, S2) is then closed in a de-energized manner.
Claims11
1-10. (canceled)
A method for switching on a power switch disposed between capacitive elements, which comprises the steps of:
- connecting at least one compensating element for equalizing currents flowing between the capacitive elements which are to be connected to one another and can decay before the power switch is subsequently closed in a current-free and no-voltage situation, the compensating element being connected in parallel to switching contacts of the power switch which is in an open position.
A device for switching on a power switch disposed between capacitive elements, comprising:
- a further switch;
- a compensating element functioning as a choke can be connected in parallel with switching contacts of the power switch in a still open position through said further switch;
- a detection circuit for detecting a current flowing between the capacitive elements which are to be connected to one another;
- and
- a control device for closing the power switch as soon as no equalizing current flowing by way of said choke is detected by said detection circuit.
Dependencies are inferred from the claim text.