Electrical transmission or interconnection systems – Nonlinear reactor systems – Parametrons
Patent
1990-09-18
1993-02-16
Sikes, William L.
Electrical transmission or interconnection systems
Nonlinear reactor systems
Parametrons
3072471, 307262, 307273, 307546, 363 56, H03K 1756, H03K 1761
Patent
active
051873842
ABSTRACT:
A method for triggering a semiconductor switch with an inductive transformer having a primary side and having a secondary side connected to the semiconductor switch to be triggered includes dissipating magnetic energy that may be stored in the transformer from the transformer with a circuit configuration for demagnetization of the transformer. A switch potential of a given polarity is subsequently applied to the primary side of the transformer for switching the semiconductor switch. An increase of the potential on the primary side of the transformer beyond an allowable value is prevented after the demagnetization of the transformer. A circuit configuration for triggering a semiconductor switch includes an inductive transformer having a primary winding and having a secondary winding connected to the semiconductor switch to be triggered. A control input is connected to a logic circuit. At least one controllable switch is connected between the logic circuit and the primary winding for switching a voltage with a given polarity to the primary winding. At least one free-running element is connected to the primary winding for switching a voltage with a polarity opposite the given polarity to the primary winding. A detector means is connected to the primary winding for detecting a conclusion of a demagnetization of the transformer. Another switch is connected to the primary winding for short-circuiting the primary winding.
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Cunningham Terry D.
Greenberg Laurence A.
Lerner Herbert L.
Siemens Aktiengesellschaft
Sikes William L.
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