Apparatus for the voltage maintenance of an electrical AC...

Details Apparatus for the voltage maintenance of an electrical AC... Apparatus for the voltage maintenance of an electrical AC...

2006-09-12

2006-09-12

Sircus, Brian (Department: 2836)

Electrical transmission or interconnection systems

Plural supply circuits or sources

One source floats across or compensates for other source

C307S103000

Reexamination Certificate

active

07105948

ABSTRACT:
A method and apparatus for the voltage maintenance of an electrical AC voltage supply network comprising a partial converter system, which has a first branch pair and a second branch pair connected in parallel therewith and an electrical energy store connected in parallel with the branch pairs. Each branch pair is formed from two series-connected driveable power semiconductor switches, each with a diode reverse-connected in parallel, and the junction point of the power semiconductor switches of the first branch pair forming a first terminal and the junction point of the power semiconductor switches of the second branch pair forming a second terminal. The partial converter system has a third branch pair connected in parallel with the first and second branch pairs. The junction point of the power semiconductor switches of the third branch pair forms a third terminal.

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