초록 ▼

A power electronic circuit arrangement is specified, having a first power converter, which is connected to a first supply system, and a second power converter, which is connected to a second supply system. The first and second power converters are connected via a voltage intermediate circuit. Accord

A power electronic circuit arrangement is specified, having a first power converter, which is connected to a first supply system, and a second power converter, which is connected to a second supply system. The first and second power converters are connected via a voltage intermediate circuit. According to the invention, a further filter is provided in addition to the so-called 33 Hz filter (supply-system filter) in the voltage intermediate circuit, which further filter serves to suppress the undesirable in-antiphase and in-phase current components flowing in the intermediate circuit. The additional filter can be realized either in split fashion, i.e. with two subfilters, in each case one for the in-antiphase current components and one for the in-phase current components, or in combined fashion with a common filter for both current components. The further filter, in combined or split fashion, fundamentally has a structure with a series circuit formed by a filter capacitor and a filter inductor, a filter resistor being connected in parallel with the filter inductor.

대표청구항 ▼

[ What is claimed as new and desired to be secured by Letters Patent of the United States is:] [1.] A power electronic circuit arrangement comprising:(a) at least one first power converter which is connected to a first voltage supply system and is connected to a voltage intermediate circuit;(b) at l

[ What is claimed as new and desired to be secured by Letters Patent of the United States is:] [1.] A power electronic circuit arrangement comprising:(a) at least one first power converter which is connected to a first voltage supply system and is connected to a voltage intermediate circuit;(b) at least one second power converter which is connected to the voltage intermediate circuit and feeds a second voltage supply system, the second power converter having a three-point invertor structure and being connected to a positive, a negative and a neutral terminal of the intermediate circuit;(c) a supply-system filter for taking up a doubled supply-system frequency of the second voltage supply in the voltage intermediate circuit; and(d) a further filter in the voltage intermediate circuit, which filter is designed to suppress effects both of in-phase harmonic and of in-antiphase harmonic current components flowing in the voltage intermediate circuit.