Patent ID: 6178076
Filing Date: 2001-01-23
Classification: H02J,Y02E

Abstract:
A power-electronic circuit arrangement for compensating for mains system disturbances and mains voltage reductions in a voltage supply system comprising:a) a feeder converter which is connected via a feeder transformer to the voltage supply mains system, is fed from a first auxiliary voltage source with a first auxiliary voltage and which, when mains system disturbances or mains voltage reductions are present, is designed to feed a compensating voltage into the voltage supply mains system; andb) a filter which can be connected in parallel with the feeder transformer on the mains system side; whereinc) at least one secondary auxiliary voltage source is provided, with a second auxiliary voltage which can be coupled to the feeder converter instead of the first auxiliary voltage source, in which case the second auxiliary voltage is chosen to be less than the first auxiliary voltage.