Patent ID: 9269508
Filing Date: 2016-02-23
CPC Classification: H01F,H01H,H02M,H02P

Claim Text:
1. In combination with a load and with a regulating transformer having a regulating winding including a partial first winding having opposite first and second ends, a tap changer comprising: respective first and third primary semiconductor switches connected between the first and second ends of the partial first winding and a first center tap connected to the regulating winding; respective second and fourth primary semiconductor switches connected between the first and second ends of the partial first winding and a second centertap connected at least indirectly to the load, whereby the first and second primary switches form a first bypass path between the regulating winding and the second centertap and the third and fourth primary switches form a second bypass path between the regulating winding and the second centertap; respective first through fourth primary resistors; and respective first through fourth primary capacitors connected in series with the respective first through fourth primary resistors and forming therewith first through fourth primary bypass paths across the respective first through fourth primary switches.