CPC H02J 3/46 (2013.01) [H02J 3/381 (2013.01); H02J 2203/20 (2020.01); H02J 2300/28 (2020.01)] | 24 Claims |
1. A method for feeding electrical power into an electrical supply network using an inverter-controlled infeed unit, comprising:
feeding, by an inverter arrangement including a plurality of inverters, an output power into the electrical supply network;
selectively galvanically isolating each inverter of the plurality of inverters from the electrical supply network using an associated isolating switch of a plurality of isolating switches, each inverter of the plurality of inverters being associated with a circuit including a plurality of switches configured to generate a sinusoidal output current using pulsed actuation of the circuit;
generating a plurality of partial powers by the plurality of inverters, respectively;
summing the plurality of partial powers to produce the output power;
depending on the output power, operating one or more first inverters of the plurality of inverters as active inverters that respectively generate a partial power, and
depending on the output power, operating one or more second inverters of the plurality of inverters as passive inverters that respectively do not generate a partial power, wherein one or more of the passive inverters are operated as blocked inverters and remain galvanically coupled to the electrical supply network.
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