MAINS-COUPLED INVERTER, INVERTER ARRANGEMENT AND METHOD FOR OPERATING AN INVERTER ARRANGEMENT

摘要

The invention relates to a mains-coupled inverter (2) for feeding current into an energy supply network (5) via a transformer (4), which inverter has an output bridge arrangement which is driven via a pulse width modulator (241), wherein a periodic auxiliary signal is used to determine switching times of the output bridge arrangement. The inverter (2) also has a synchronization unit (241) for synchronizing the phase of the auxiliary signal with the energy supply network (5). The inverter (2) is distinguished by the fact that the synchronization unit (241) is set up to set a predefined phase offset (?F0) of the periodic auxiliary signal with respect to a phase of the energy supply network (5). The invention also relates to an inverter arrangement having at least two such mains-coupled inverters (2) which are inductively coupled to one another on the AC side, and to a method for operating an inverter arrangement.