Abstract: A method for producing a plain bearing including at least one plain bearing segment for forming a first plain bearing shell, at least one running element of a second plain bearing shell which forms a counter-bearing surface to the at least one plain bearing segment, with a sliding surface of the at least one running element having a higher hardness than a sliding surface of the at least one plain bearing segment, a carrying body for the at least one running element, an intermediate layer which is arranged between the at least one running element and the carrying body, a plastic deformability of which can be set by a temperature guidance. The method includes heating the intermediate layer, adjusting the running element, and reducing the plastic deformability of the intermediate layer by the temperature guidance.

Abstract: The invention concerns a rotor blade for a water turbine with a hydrodynamic profile, to which a suction side and a pressure side are associated, comprising a plurality of overflow channels, which are arranged in the hydrodynamic profile and create a hydraulic connection between the suction side and the pressure side and to which a valve arrangement is associated respectively. The invention is characterised in that the valve arrangement is closed below a preset load limit threshold for the rotor blade and is opened above the load limit threshold, whereas every overflow channel with the valve arrangement in the open position reduces the power coefficient and/or the thrust coefficient of the rotor blade with respect to the closed position.

Abstract: Presented is an underwater power plant including a support structure, a nacelle, the support structure and the nacelle being detachably connectable to one another via a coupling device, a water turbine, the water turbine at least indirectly drives an electrical generator that is received in the nacelle, and an inductive transmission device, where inductive transmission device transmits power generated by the electrical generator from the nacelle in a contactless manner to the support structure, and where the inductive transmission device includes a transformer with a primary side and a secondary side, the primary side is assigned to the nacelle and the secondary side is assigned to the support structure.

Abstract: The invention relates to a tidal power plant, comprising a turbine, which rotates on a carrying element; a foundation structure, on which the carrying element is supported on at least one coupling device, an upper part of the coupling device that is part of the carrying element being detachably operatively connected to a lower part of the coupling device that is part of the foundation structure in the installed state, wherein the invention is characterized in that the carrying element is individually adapted to the orientation of the lower part of the coupling device existing after the foundation structure has been created.

Abstract: There is provided a maritime current power plant park that includes a plurality of maritime current power plants, where each of the plurality of maritime current power plants has a rotor-like water turbine, an electric generator, and a drive train connecting the electric generator to the rotor-like water turbine. The drive train has bearing components for supporting the rotor-like water turbine. At least two of the plurality of maritime current power plants have differently dimensioned rotor-like water turbines, and the drive train of each of the at least two of the plurality of maritime current power plants is uniform.

Abstract: An installation vehicle for a nacelle of a tidal power plant having a turbine-generator unit includes at least two floating devices with a plurality of ballast tanks, the buoyancy of which is settable, a drive device acting in different directions, and a controllable fastening device for holding the nacelle. The fastening device is connected at least indirectly to a support element, which produces a connection between the floating devices. The connection between the floating devices and the support element is embodied by a detachable coupling unit or the support element includes a device for size adaptation.

Abstract: The invention relates to a method for operating a marine current power plant, comprising a water turbine with several rotor blades arranged as buoyancy rotors, an electric generator which is driven at least indirectly by the water turbine, wherein the water turbine is guided for power limitation in an overspeed range above a power-optimal tip speed ratio. The water turbine is adjusted to the immersion depth of the marine current power plant in such a way that cavitation occurs on at least one rotor blade section in the overspeed range from a cavitation tip speed ratio threshold which lies below a tip speed ratio associated with a runaway speed, and the water turbine is operated for load limitation at tip speed ratios which lie above the cavitation tip speed ratio threshold.

Abstract: An installation method for an underwater power plant includes a nacelle comprising a nacelle housing having a first nacelle housing section, a water turbine including a drive connection to a drive shaft, the drive shaft being mounted inside the first nacelle housing section, an electrical generator, comprising a generator rotor and a generator stator, and a generator housing. The electrical generator and the generator housing from a separate generator module that can be handled and installed as a whole, and an adjustment of bearings for the drive shaft is executed before a production of a coupling between the generator module and the drive shaft, and the generator housing is coupled in a rotationally-fixed manner to the first nacelle housing section and the generator is coupled in a rotationally-fixed manner to the drive shaft, the generator rotor being carried by the drive shaft after the coupling.

Abstract: A power plant for obtaining energy from a flow of a body of water with a varying main incident flow direction, comprising a rotating unit with an axial turbine assigned an axis of rotation and comprises at least one rotor blade, the rotor blade is fastened in a rotationally conjoint manner to a rotor head of the rotating unit, and the rotor blade has at least over a partial region of the longitudinal extent thereof, a profile which can be impinged on by flow bidirectionally for windward and leeward operation. A rotary device is provided for a power plant component for adjusting a relative angle between the axis of rotation and the main flow direction, wherein the rotary device is assigned a first stop and a second stop which limit the range of movement of the rotary device to a range of angle of rotation of less than 180°.

Abstract: The invention concerns a tubular turbine generator unit including a turbine rotor disk; a drive shaft which is torsion-proof connected with the turbine rotor disk; an electrical generator with a generator rotor and a generator stator, wherein the generator rotor is driven at least via the drive shaft; a tubular turbine housing, which encloses the electrical generator; a bearing assembly, which is arranged inside the tubular turbine housing and enables to support the drive shaft; characterized in that at least one floodable space is provided inside the tubular turbine housing, which is flooded with water in the region of the tubular turbine generator unit, wherein the generator gap between the generator rotor and the generator stator and the bearing gap of the bearing assembly are part of the floodable space.

Abstract: Power generation plant for obtaining electrical power from a water or air flow includes a turbine; an electrical generator, having a coaxial configuration of a rotor and a stator. The rotor is an external rotor and part of an annular support structure for the turbine. The stator is housed in a stator housing which is sealed to the ambient medium and a wall area of the sealed stator housing running in the area of the gap between rotor and stator so that the rotor is situated radially outside the sealed stator housing and the magnetic interaction between rotor and stator occurs through this wall area. A mount for the annular support structure includes the rotor. The mount is situated adjoining the gap between the rotor and stator and is supported on the external circumference of the sealed stator housing.

Abstract: There is provided a power generation plant for obtaining electrical power from a water flow. The power generation plant includes a revolving unit having a water turbine, a directly driven electrical generator having a coaxial configuration with a generator rotor and generator stator, a gondola housing having a housing part to form a cylindrical internal opening where the generator stator is situated, a support element for supporting the revolving unit which is situated coaxially and radially inside the cylindrical internal opening to bear the generator rotor, and a bearing configuration for the running of the support element in the cylindrical internal opening. The electric generator of the power generation plant is situated asymmetrically in relation to the longitudinal extension of the cylindrical internal opening in the gondola housing and is also displaced toward the support structure carrying the gondola housing.

Abstract: The invention relates to a plain bearing for an underwater power plant, comprising at least one plain bearing segment for forming a first plain bearing shell; at least one running element of a second plain bearing shell, the running element forming the counter bearing surface to the plain bearing segment, the sliding surface of the running element having a higher hardness than the sliding surface of the plain bearing segment; a carrying element for the running element; characterized in that an intermediate layer having an adjustable plastic deformability is arranged between the running element and a carrying element.

Abstract: A submersible power generation plant includes a water turbine standing freely on a support structure in an ambient flow; an electric generator which is driven at least indirectly by the water turbine; at least one generator component of the electric generator is enclosed by at least one corrosion protection element which seals against ambient water, with cavities within the corrosion protection element each being filled with a heat-conductive medium; at least one pass-through duct being provided for dissipating waste heat from the electric generator, which the pass-through duct conducts the ambient water and leads through the corrosion protection element without entering into any material exchange with a region encapsulated by the corrosion protection element, and a growth protection system arranged on a flow input of the pass-through duct on an upstream side.

Abstract: A hybrid bearing, comprising a first bearing shell with a sliding face and a second bearing shell with a second sliding face, with the first sliding face and the second sliding face being located opposite one another at a bearing gap. The first bearing shell comprises a first support body and the second bearing shell comprises a second support body. Elements which are made of slide bearing material are attached to the first support body and to the second support body, with the elements made of slide bearing material forming at least part of the first sliding face and of the second sliding face. Permanent magnets are connected to the first support body and the second support body, with the permanent magnets being arranged spaced apart from the first sliding face and the second sliding face.

Abstract: The invention relates to a maritime current power plant park, comprising several maritime current power plants which respectively comprise a rotor-like water turbine and an electric generator which are connected by means of a drive train, with the drive train comprising bearing components for supporting the rotor-like water turbine. The invention is characterized in that at least two of the maritime current power plants comprise differently dimensioned rotor-like water turbines and similar drive trains.

Abstract: The invention relates to a tidal power plant, comprising a turbine, which rotates on a carrying element; a foundation structure, on which the carrying element is supported on at least one coupling device, an upper part of the coupling device that is part of the carrying element being detachably operatively connected to a lower part of the coupling device that is part of the foundation structure in the installed state, wherein the invention is characterized in that the carrying element is individually adapted to the orientation of the lower part of the coupling device existing after the foundation structure has been created.

Abstract: The invention relates to a tidal power plant, comprising a machine nacelle having a nacelle housing; a water turbine, which is part of a revolving unit, wherein the revolving unit is supported on the nacelle housing by means of a sliding bearing arrangement comprising a plurality of bearing elements. The invention is characterised in that the nacelle housing comprises at least one load-bearing concrete part and the bearing elements are adjustably fastened to the concrete part or to a bearing support cast into the concrete part.

Abstract: The invention concerns a method for the operation of an underwater powerplant comprising a water turbine for purposes of absorbing kinetic energy from a flow of water; an electrical generator with converter feed, whose generator rotor is connected in a torsionally rigid manner with the water turbine, wherein the invention is characterised in that in normal operation a first frequency converter is used for purposes of converter feed, and in the braking operation at least one second frequency converter, or one component of a second frequency converter, is connected into the circuit and synchronised with the first frequency converter, in order to execute with the latter in a combined manner a converter feed to the electrical generator, which generates a generator torque braking the water turbine.

Abstract: The invention relates to an underwater powerplant, comprising a support structure; a nacelle, the support structure and the nacelle being detachably connectable to one another via a coupling device; a water turbine, which at least indirectly drives an electrical generator, which is received in the nacelle; characterized in that the underwater powerplant further comprises an inductive transmission device, which transmits the power generated by the electrical generator from the nacelle in a contactless manner to the support structure.