Abstract: The invention relates to a power generation plant, driven by a water current, comprising a water turbine; an electric generator; a drive train between the water turbine and the electric generator. The invention is characterized in that the drive train comprises a controllable hydrodynamic coupling for exclusive transmission of power to the electric generator.

Abstract: A drive train having a power-split transmission for distributing the power to at least one first power branch and at least one second power branch. The first power branch at least indirectly drives an electric generator, while a connection is established between the first power branch and the second power branch by a hydrodynamic circuit, which is disposed at the output end of the power-split transmission. The power flow is influenced in such a way by the hydrodynamic circuit that the speed at which the electric generator is driven is substantially constant.

Abstract: A variable-speed transmission for a power-generating plant; with an input shaft which is connected at least indirectly with a power transducer of a wind-energy generator or hydroelectric generator; with an output shaft which is connected at least indirectly with an electric generator, with the speed of the output shaft being substantially constant; with a superposition gear which is connected at least indirectly with the input shaft and which divides power among a first power branch connected at least indirectly with the output shaft and a second power branch; with the second power branch comprising at least two hydrodynamic circulations, with at least one of the hydrodynamic circulations being at least indirectly in connection with the first power branch.

Abstract: The invention relates to a pod ship propulsion System comprising a housing (3) connected to a ship hüll (2), an electric drive motor (8) mounted inside the housing at least one propeller (4) disposed outside the housing, wherein said electric drive motor is connected to the propeller by means a hydrodynamic gear (10).

Abstract: The invention relates to a power generation plant, driven by a water current, comprising a water turbine; an electric generator; a drive train between the water turbine and the electric generator. The invention is characterized in that the drive train comprises a controllable hydrodynamic coupling for exclusive transmission of power to the electric generator.

Abstract: The invention relates to a high output machine unit; with a drive system provided with an output shaft; with a machine provided with a drive shaft; with a fillable and dischargeable hydrodynamic coupling arranged between the drive system and the machine; with a mechanical coupling arranged parallel to the hydrodynamic coupling; one half of the mechanical coupling can be connected non-rotationally to the output shaft of the drive system; the other half of the mechanical coupling can be connected non-rotationally to the drive shaft of the machine.

Abstract: A variable-speed transmission for a power-generating plant; with an input shaft which is connected at least indirectly with a power transducer of a wind-energy generator or hydroelectric generator; with an output shaft which is connected at least indirectly with an electric generator, with the speed of the output shaft being substantially constant; with a superposition gear which is connected at least indirectly with the input shaft and which divides power among a first power branch connected at least indirectly with the output shaft and a second power branch; with the second power branch comprising at least two hydrodynamic circulations, with at least one of the hydrodynamic circulations being at least indirectly in connection with the first power branch.

Abstract: The invention relates to an energy generation System for obtaining electric energy from an ocean current. Said System comprises a drive train comprising an input shaft and an Output shaft, the input shaft being driven at least indirectly by a water turbine and the Output shaft at least indirectly driving an electric generator, which is connected to an electric network. The electric network has an essentially constant network frequency and the drive train comprises an Output branching gear with a first Output branch and at least one second Output branch. The first Output branch and the second Output branch are interconnected by means of the Output branching gear and a hydrodynamic component.

Abstract: The invention relates to a pod ship propulsion System comprising a housing (3) connected to a ship hüll (2), an electric drive motor (8) mounted inside the housing at least one propeller (4) disposed outside the housing, wherein said electric drive motor is connected to the propeller by means a hydrodynamic gear (10).

Abstract: Control procedure for a flow machine, wherein the flow machine comprises a turbine, which picks up power from a wind or water current, and a driveline, which transfers power from the turbine to an electric generator connected to an electricity grid of constant grid frequency. A power distribution transmission arranged on the input side of the driveline splits power to first and second power branches. A hydrodynamic convefler connects the first and second power branches on the output side of the driveline and the first power branch drives the electric generator with constant speed. The reaction member of the hydrodynamic converter is set to a constant position for a turbine speed below a chosen threshold and above the threshold the reaction member is controlled to maintain a medium speed of the turbine being a function of the momentum picked up by the turbine.

Abstract: The invention relates to a drive train for the transmission of a variable power at a variable input speed for a power-generating station that is driven by a turbomachine, such as a wind turbine or a water turbine. The drive train has a power-split transmission for distributing the power to at least one first power branch and at least one second power branch. The first power branch at least indirectly drives an electric generator, while a connection is established between the first power branch and the second power branch by means of a hydrodynamic circuit, which is disposed at the output end of the power-split transmission. The power flow is influenced in such a way by the hydrodynamic circuit that the speed at which the electric generator is driven is substantially constant.

Abstract: A hydrodynamic converter is provided having a pump wheel, which is flowed through in operation from the inside to the outside; a turbine wheel, which is flowed through in operation from the outside to the inside; guide blades between the pump wheel and the turbine wheel; and guide blades between the turbine wheel and the pump wheel. The converter can have a speed ratio of between the speed nT of the turbine wheel and the speed nP of the pump wheel of between 1.2 and 4 at approximately even or falling ? progress. The converter can also have different speed ratios between pump and turbine, which can be realized with the ratio R/r equal to or larger than 1.

Abstract: A wind power plant connectable to an electric grid is provided that has at least three control levels. A controller controls an angular position of the rotor blades and/or controls a setting of the reaction member of the hydrodynamic speed transformer and/or controls the power electronics of the generator. The controller is provided with predetermined setpoint characteristics depending on operating states of the wind power plant and/or the electric grid or characteristics of the wind.

Abstract: A hydrodynamic converter is provided having a pump wheel, which is flowed through in operation from the inside to the outside; a turbine wheel, which is flowed through in operation from the outside to the inside; guide blades between the pump wheel and the turbine wheel; and guide blades between the turbine wheel and the pump wheel. The converter can have a speed ratio of between the speed nT of the turbine wheel and the speed nP of the pump wheel of between 1.2 and 4 at approximately even or falling ? progress. The converter can also have different speed ratios between pump and turbine, which can be realized with the ratio R/r equal to or larger than 1.

Abstract: A wind power plant connectable to an electric grid is provided that has atleast three control levels. A controller controls an angular position of the rotor blades and/or controls a setting of the reaction member of the hydrodynamic speed transformer and/or controls the power electronics of the generator. The controller is provided with predetermined setpoint characteristics depending on operating states of the wind power plant and/or the electric grid or characteristics of the wind.

Abstract: Procedure for the control of a drive line the input shaft of which, at the very least, is directly driven by a power input from a wind power or waterpower machine or from another flow power machine and of which the output shaft, at the very least, directly drives an electrical generator, whereby the output shaft rotates with a speed which is higher than the speed of the input shaft; the generator is connected to an electricity grid which features an essentially constant grid frequency; the drive line comprises a power-distributor transmission and a hydrodynamic servo-converter; the power-distributor transmission comprises two power branches; the hydrodynamic servo-converter comprises a pump wheel a turbine wheel and an adjustable reaction member; via the input shaft of the drive line power is, at the very least, directly fed into the power-distributor transmission; a first power branch of the power-distributor transmission, at the very least, transfers directly power to the output shaft of the drive line; the

Abstract: The invention relates to polymer ceramic composite materials with a virtually zero shrinkage compared to the original model after concluding partial pyrolysis and with a comparable thermal expansion behavior (preferably in an application range of 400° C. or less) to metal construction materials, in particular gray cast iron or steel, which are obtainable by methods described below; corresponding composite constructions and molded parts; and methods for producing and using these materials, composite constructions and molded parts. The polymer ceramic composite materials can for instance be used instead of or in contact with steel or gray cast iron temperature-proof molded parts, predominantly in mechanical engineering, without postmachining after the creative forming.

Abstract: The displacement machine is intended in particular for use as a pump, and has a working area, formed in a housing, which working area is limited by two end walls and a casing, and is accessible via an inlet and an outlet for a working medium. At least one rotor, movably disposed in the housing, subdivides the working area, and a guide gearing for rotor control is connected to a drive apparatus located outside the working area. The invention has as its object to propose a displacement machine which can be manufactured less expensively and with less weight than known displacement machines of this type, and in particular can be operated without any special lubricant for the bearings.

Abstract: The invention relates to a drilling tool (11), comprising a drill shank (22) which has an inner chip space (13) and an outer chip space (14) which extend axially along the drill shank (22) and which in each case accommodate at least one indexable insert (21, 22), the drill shank (12) having a left-hand twist for damping vibrations and increasing the cutting capacity.

Abstract: The invention relates to a drilling tool (11) for bores in solid material, comprising a drill shank (26) which has a radially inner indexable insert (13) at an inner chip space (21) and a radially outer indexable insert (14) at an outer chip space (22), the working areas of which indexable inserts (13, 14) overlap, the inner chip space (21) having a cover (36) which extends at least partly along the shank longitudinal axis (20), and the inner chip space (21) merging into the outer chip space (22), so that the chip discharge is effected via a common chip space (23) in the rear area (32) of the drilling tool (11).