Energy feed device with symmetrical connection of a direct current source to a grounded star point of a three-phase current network

The device (1) has an inverter (4) for providing intermediate circuit direct voltage (UDC2) of a direct current (DC) intermediate circuit (6). A DC static converter (7) is provided for transformation of intermediate circuit direct voltage (UDC1) of a DC current network (2) into another intermediate circuit direct voltage of the intermediate circuit. A neutral point coupling (28) is provided for symmetrical attachment of a DC supply (16) in the DC current network to a three-phase current supply neutral point (12) of a three-phase current supply (3).