A turbine which uses fluid pressure to turn a shaft in a manner that does not allow for cavitation to be created.

An energy conversion device for converting water energy, in some cases water energy from waves and/or a flow such as an ocean current, into electric energy, comprises at least one rotor having a rotor rotational axis, the alignment of which is in some cases fixed by a supporting frame, and a flow housing which comprises a rotor shell which surrounds the rotor radially to the rotor rotational axis.

A method for assembling a wind turbine, including: attaching an elevator carriage (27) to a nacelle (9) to form a carriage-nacelle assembly (27,9); and mounting the carriage-nacelle assembly (27,9) on to a tower (3) as a unit.

A wind energy generation system includes a tower, a nacelle provided in an upper portion of the tower to be rotatable around a central axis of the tower, a hub provided in front of the nacelle to be rotatable around an axis orthogonal to the central axis, and one or more blades provided in the hub. The hub includes a hub body portion to which the blades are attached, and a fitting protruding portion that protrudes from a back surface side of the hub body portion. A fitting portion having an opening portion is provided in front of the nacelle, and the fitting protruding portion is fitted into the fitting portion from the opening portion. In the wind energy generation system, outflow of oil to the outside of the generation system can be inhibited.

Methods, systems and apparatuses including systems and methods that can be used for operating a hydrokinetic turbine such as along one or more flow channels of a river for power generation is disclosed. The hydrokinetic turbine can be positioned within the one or more flow channels or can be shaped to form one or more flows and can be turned by the flow of the river.

A wind turbine cooling system, a wind turbine with the cooling system, and a method for testing the cooling system are provided. The cooling system includes a radiator assembly and a nacelle. The nacelle includes a housing rotatably connected with the radiator assembly. The cooling system is configured to thermally couple the radiator assembly to a heat source inside the nacelle. The radiator assembly is moveable between a first position and a second position. When in the first position, the radiator assembly extends away from an upper roof of the housing of the nacelle. When in the second position, the radiator assembly is contained inside the housing of the nacelle.

A nacelle for a wind turbine, the nacelle comprising: a drivetrain with a drivetrain axis, at least two torque arms positioned around the drivetrain axis and attached to a member of the drivetrain, and a frame attached to a yaw bearing. The torque arms of the drive train are supported by the frame and at least one of the torque arms has an orientation deviating at least substantially from being horizontal.

A cabin cover and a wind turbine generator set are provided. The cabin cover includes: a cover, the cover including first plates, second plates, and at least one support beam, the first plate and the second plate being alternately arranged, at least one group of adjacent first plate and second plate being spaced apart from each other and being fitted to the support beam, and the first plates, the second plates, and the support beams jointly enclosing an accommodating chamber; and fasteners, two or more of fasteners being provided and disposed in the accommodating chamber, at least one fastener detachably connecting the first plate to the support beam, and at least one fastener detachably connecting the second plate to the support beam.

An energy conversion system for converting wind energy into electrical energy includes at least one rotor having a substantially horizontal rotational axis and a plurality of rotor blades extending radially with respect to the rotational axis; a rotor mantle which fully surrounds the rotor; a plurality of wind funnels, including a first wind funnel arranged upstream of the rotor mantle and tapering towards the rotor mantle, and a second wind funnel arranged downstream of the rotor mantle and widening in a direction leading away from the rotor mantle; and a fixed frame which supports the rotor mantle and/or the plurality of wind funnels, wherein at least one adjustment device is provided, which is arranged and configured to orient the energy conversion system in a position corresponding to a prevailing wind direction.

A wind turbine comprising a tower, a pod, at least one smoke detector in the region of the tower and/or in the region of the pod, at least one fan arranged in the tower and/or in the pod, and a control unit which detects a fire situation or smoke development in the wind turbine by means of the smoke detectors and activates the fans disposed in the tower and/or in the pod in order to suck away the smoke produced.