Electric power conversion systems – Current conversion – Including d.c.-a.c.-d.c. converter
Reexamination Certificate
2011-08-30
2011-08-30
Berhane, Adolf (Department: 2838)
Electric power conversion systems
Current conversion
Including d.c.-a.c.-d.c. converter
C363S071000, C363S098000, C363S132000
Reexamination Certificate
active
08009443
ABSTRACT:
A DC/DC converter (1) having a plurality n of two-pole inverters (2a,2b) connected in parallel or in series, n transformers (Ta, Tb) and n two-pole rectifiers (3a,3b) connected in parallel or in series is described. One inverter (2a,2b) each and one rectifier (3a,3b) each are connected to a transformer (Ta, Tb). The inverters (2a,2b,2a′,2b′) are in turn connected to a control which is provided for frequency-synchronous actuation of the inverters (2a,2b,2a′,2b′) with a 180°
phase shift. According to the invention, leakage inductances (LS1, LS2) of the transformers (Ta, Tb, Ta′, Tb′), together with capacitors (C1, C2) of the inverters (2a,2b ,2a′, 2b′) and/or capacitors (C3, C4) of the rectifiers (3a,3b,3a′, 3b′), form in each case a resonating circuit whose resonant frequency is substantially twice as great as a clock frequency of the control signal. Furthermore, an AC/DC converter (6) is described which has a DC/DC converter (1) according to the invention with an AC/DC stage (5) connected on the input side.
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Berhane Adolf
BRUSA Elektronik AG
Kapsalas George
Patentbuero Paul Rosenich AG
Zhang Jue
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