POWER CONVERTER AND METHOD FOR OPERATING A POWER CONVERTER

A power converter with an inverter that is configured to transform electrical power between a DC-side of the power converter and an AC-side of the power converter, includes a first port and a second port arranged on the AC-side and a third port and a fourth port arranged on the DC-side of the power converter. The first port is configured to be operatively connected to an AC-grid, the second port is configured to be operatively connected to an AC-load, the third port is configured to be operatively connected to an external power source, and the fourth port is configured to be operatively connected to a rechargeable DC-power storage. The power converter includes a DC/DC-converter arranged between the third port and the inverter, which is configured to transfer electrical power provided by the external power source from the third port to the inverter. The inverter is configured to be grid forming and to provide electrical power to the second port in case of a power supply outage at the first port, the power converter further includes a control unit configured to monitor the third port and to detect parameters of the electrical power provided via the third port.