of simplicity but it is to be noted that some of its details of the other turbine may be different both wind turbines 2 are connected by a dc voltage line 4 and a dc voltage busbar 6 to a collective inverter 8 or multi input inverter the collective inverter 8 generates alternating current with an ac voltage from the dc voltage or the direct current from the busbar 6 at its output 10 and supplies this into an electrical supply grid 14 via a transformer 12 which here is designed to be a medium voltage transformer the basic functionality and necessary elements are in any case explained according to an embodiment based on the detailed wind turbine 2 shown wind turbine 2 has an aerodynamic rotor 16 which is turned by the wind and therefore turns a runner in a synchronous generator 18 so that the synchronous generator 18 generated alternating current and supplies this to the rectifier 20 the rectifier 20 is located in the nacelle 22 of the wind turbine 2 and there it generates an initial direct current and an initial dc voltage the initial direct current and the initial dc voltage are supplied via a direct current connection cable 24 from the nacelle 22 via the tower 26 to the tower base 28 the direct current connection cable 24 can therefore also be called a direct current tower cable in the tower base 28 the direct current connection cable 24 is coupled to a boost converter 30 the boost converter 30 transforms the initial direct current and the initial ac voltage into a second direct current and a second dc voltage this second direct current and the second.