Abstract: A wind turbine includes a floating foundation having a plurality of buoyancy bodies, the buoyancy bodies being formed from a plurality of buoyancy body elements designed as hollow bodies, which are arranged adjacent to one another in a first plane concentrically around each central element extending from the floating foundation and are connected to said central element. Each buoyancy body element has a surface supported on the central element, a convex surface arranged opposite the central element, and two lateral surfaces each supported on a lateral surface of an adjacent buoyancy body element.

Abstract: The invention relates to a system comprising: a foundation element that has a universal joint, wherein the universal joint has a first universal joint element connected to the foundation element for conjoint rotation and a second universal joint element which is rotatable about the longitudinal axis of the first universal joint element by carrying out a rotation about its own longitudinal axis; a floating wind turbine; and a mooring line. One end of mooring line is connected to the foundation element a first connector connected to the second universal joint element for conjoint rotation and the other end of which is connected to the floating wind turbine a second connector rotatably mounted on the floating wind turbine.

Abstract: The invention relates to a single-point-mooring wind turbine, comprising: two wind energy conversion units, which each have a rotor; turbine controllers, each of which is assigned to one of the energy conversion units and is designed to control the energy conversion unit in question independently of the other energy conversion unit in accordance with the operating parameters relating to the energy conversion unit in question. The wind turbine has a master controller, which acts on the turbine controllers and is designed to specify operating parameters adapted to both energy conversion units.

Abstract: Device for erecting a wind turbine with a floating foundation, a tower arranged on the floating foundation and two booms extending from the tower, with an energy conversion unit that is arranged in each case at a free end of a boom and has a rotor, characterized by an auxiliary tower with a rope system, connected to a winch, for lifting the energy conversion units that are connected by the booms to the tower of the wind turbine.

Abstract: The invention relates to a single-point mooring wind turbine having a rotor arranged on a tower, characterized by a design counteracting sway of the wind turbine caused by the rotor torque.

Abstract: Coupling for connecting a wind turbine to a power grid, the coupling comprising a first support having at least one first electrical connector and a second support having at least one second electrical connector that is complementary to the first electrical connector, the first support and the second support being rotatable with respect to one another, characterized in that at least one of the connectors is movable transversely to the plane of the supports relative to the other connector in order to form and disconnect an electrical plug connection and the connectors are sealed against the penetration of moisture both when they are interconnected and when they are separated.

Abstract: Coupling for connecting a wind turbine to a power grid, the coupling comprising a first support having at least one first electrical connector and a second support having at least one second electrical connector that is complementary to the first electrical connector, the first support and the second support being rotatable with respect to one another, characterized in that at least one of the connectors is movable transversely to the plane of the supports relative to the other connector in order to form and disconnect an electrical plug connection and the connectors are sealed against the penetration of moisture both when they are interconnected and when they are separated.

Abstract: The invention relates to a wind turbine comprising a floating base designed as a semi-submersible, a tower arranged on the floating base, at least two arms extending from the tower, a respective energy conversion unit arranged at the free end of each arm, and a cable system connecting the base to the energy conversion units and connecting the energy conversion units to one another in order to introduce the thrust forces acting on the tower, the arms and the energy conversion units into the base, wherein the cable system has a pre-tensioning, the value of which is greater than the loads to be expected during the operation of the wind turbine and acting against the pre-tensioning.

Abstract: The invention relates to a unit, having a floating wind turbine, which has a floating foundation, and having a floating mooring buoy, which can be connected to the floating foundation of the floating wind turbine and which has at least one anchoring means for anchoring the mooring buoy to the bed of a body of water, characterized in that the floating foundation of the floating wind turbine has a hole for holding the mooring buoy.

Abstract: An offshore wind farm with a plurality of foundation elements which are arranged so as to form the corners of a plurality of parquetted hexagons and with a plurality of floating offshore wind turbines. Each floating offshore wind turbine within a hexagon is connected to the foundation elements which form the hexagon. The invention is characterized in that the floating offshore wind turbines are connected to the foundation elements by means of connection means designed as a chain and/or a cable or a combination of a chain and a cable. The connection means have a length which allows the offshore wind turbines to drift within a circular area with a radius of up to 10% of the hexagon circumradii about the respective hexagon center.