Buck Converter and Inverter Comprising the Same
A buck converter (5) for converting a DC voltage at input terminals into an output voltage at output terminals is disclosed. The buck converter (5) comprises a DC voltage link comprising a series-connection of at least two capacitors (C1 and C2) between the output terminals; and one subcircuit (A, B) per each capacitor (C1 and C2) of the series-connection. Each subcircuit (A, B) includes an inductor (L1, L2) and a freewheeling diode (D1, D2). A first one of the input terminals is connected to a first output terminal by a series-connection of a semiconductor switch (S1 ) and the inductor (L1) of a first one (A) of the subcircuits; and the subcircuits are coupled for balancing the voltages across their inductors (L1 and L2). The buck converter may be used upstream of an inverter bridge of an inverter (4), such that a maximum voltage at the input terminals may exceed a maximum voltage rating of the bridge switches within the inverter (4).
ZACHARIAS PETER [DE]; SAHAN BENJAMIN [DE]; KAZANBAS MEHMET [DE]; FALK ANDREAS [DE]; VASCONCELOS SAMUEL ARAUJO [DE
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