PHOTOVOLTAIC INVERTER UNIT WITH OPTION FOR SWITCHING BETWEEN A POWER SUPPLY SYSTEM WITH A FIXED FREQUENCY AND A LOAD VARIABLE FREQUENCY

摘要

A photovoltaic inverter unit having at least one inverter bridge path (2) and having a first output (3) for connection to a power supply system (4) for feeding electrical energy into the power supply system in the form of an AC voltage at a fixed frequency. According to the invention, the inverter unit has a second output (5) and a circuit-breaker, wherein the circuit-breaker can be used to connect the output of the at least one inverter bridge path either to the first or to the second output of the inverter unit.