TAP SWITCH

摘要

The invention relates to a tap changer for voltage regulation with semiconductor switching components on a regulating transformer having a regulating winding. The tap changer is of a modular design and each module comprises, respectively, one partial winding of the regulating winding that is connectable or disconnectable by means of semiconductor switching components. Varistors and capacitors are additionally integrated for protecting the semiconductor switching components against high voltages.

主权项

1. A tap changer for voltage regulation with semiconductor switching components on a regulating transformer having a regulating winding wherein
the tap changer has at least one module, each module comprises a respective partial winding of the regulating winding and on both sides thereof two bypass paths, each bypass path comprises one series connection of two semiconductor switching components one center tap is provided between each two serially connected semiconductor switching components of each bypass path, one of the two center taps of each module is connected with a center tap of the adjacent modules, respectively, the one remaining center tap of the third module is connectable with the load dissipation and the other remaining center tap of the first module is connectable with the regulating winding of the regulating transformer, and a voltage-dependent resistor connected in series with a capacitor is provided in parallel to each semiconductor switching component.