Electric power conversion systems – Current conversion – Including an a.c.-d.c.-a.c. converter
Patent
1997-11-07
1999-07-20
Hecker, Stuart N.
Electric power conversion systems
Current conversion
Including an a.c.-d.c.-a.c. converter
363 39, H02M 545
Patent
active
059263822
ABSTRACT:
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.
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"Statische Bahnstromumrichter-Systemubersicht ausgefuhrter Anlagen", Lonard, et al., Elecktrische Bahnen 93, 1995, pp. 179-193.
"Leistungsstarke statische Frequenzumrichter fur den Bahnverkehr durch die Alpen", Gaupp, et al., ABB Technik 5, 1955, pp. 4-10.
Asea Brown Boveri AG
Hecker Stuart N.
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