In a first aspect, a yaw system for rotating a nacelle with respect to a tower is provided. The yaw system comprises a gliding yaw bearing, an annular gear and a plurality of yaw drives, a braking disk and one or more braking disk for braking the rotation of the nacelle. In a further aspect, a tower adapter for a wind turbine is provided. The tower adapter comprises a first bearing component of a gliding yaw bearing and braking disk to brake the rotation of the nacelle with respect to the tower adapter. In yet a further aspect, a wind turbine comprising such a yaw system and/or such a tower adapter is provided.

A turbine system includes a shaft extending along an axis. A first spoke has a first end, attached to the shaft, and a second end. A second spoke has a first end, attached to the shaft, and a second end. A third spoke has a first end, attached to the shaft, and a second end. A turbine blade is attached to the second end of the first spoke, the second end of the second spoke, and the second end of the third spoke. The turbine blade extends continuously circumferentially about the axis. The turbine blade is spaced a distance apart from the axis and in non-contact with the shaft.

A wave-direction-adaptive wave focusing type wave energy convertor with multiple water channels, comprising an energy acquisition system, an energy conversion system and a support system. Wave focusing is carried out through double water channels, so that the movement amplitude of water particles behind a box is doubled. A device is connected with a fixed pile through universal bearings, so that an opening of the device is always faced to a wave flow direction, which adapts to different seasons and water conditions, has low environmental requirements, and can be used in a wide sea area. Several coils of pretension spring compression are arranged in a winding barrel, so that a nylon rope connected to a buoy is ensured to be always in a straightened state and not derail from pulley blocks to work abnormally due to looseness whether the buoy is at a wave crest or a wave trough.

A dismountable wind power plant with rotation axis substantially perpendicular to the wind direction is disclosed. The sail structure may form a Savonius type turbine when the power plant is in tensioned state, having two semicylindrical sails (5) facing opposite directions. Sails (5) are tensioned between transverse bars (6, 7), wherein the transverse bars (6, 7) provide the shape to the sails (5). The wind power plant is tensioned with a cable (8) between two fixed support points (3, 4). In one example the bottom portion of the power plant is connected to lower fixed support point (4) and the cable (8) to upper fixed support point (3). The cable (8) is tightened, causing the soft sail (5) to stiffen into its functional form. A generator (2) receives the rotational energy from the turbine (5, and provides electric power to power outlet. The application also concerns a method for mounting the wind power plant.

The present invention relates to a power generating system utilizing current around a structural body. The power generating system is disposed in a flow field, wherein the streams of the flow field flow along a main fluid flow direction. The power generating system comprises a supporting device and a power generating device. The supporting device comprises a supporting body, wherein at least one of a stream-facing region, a side-stream region, and a vortex region is defined on the supporting body. The power generating device comprises at least one power generating unit and a power storage unit, wherein the power generating unit is disposed in at least one of the stream-facing region, the side-stream region, and the vortex region.

A modular foundation includes a central portion and a plurality of legs non-rotatably secured to and extending from the central portion. The plurality of legs are substantially equally spaced apart from each other wherein each leg includes a proximal end and a distal end. A ballast support adapter is attached to the distal end of each leg wherein the adapter is configured to support one or more ballast plates such that each leg can be independently positioned for leveling the foundation and supporting the monopole in a vertical position. A platform supports the monopole and is pivotally attached to the central portion wherein the platform is configured to move from a vertical position to a horizontal position.

A wind generator for sailboats including a mast (A) provided with crosstrees (C), including: at least one wind generator (1) provided with a distribution of blades (2) arranged to rotate integrally with a shaft (6) of axis (a) in response to receiving a wind flow in an active direction (v) incident to the blades distribution; an electric generator (3) operatively connected to the generator (1) for converting the rotation of the blades (2) into electricity, comprising structure (22, 41) for fixing the generator (1) to a crosstree (C), and with the blades (2) being movable from an open operating position (P1) of maximum incidence of wind flow (F) to a closed non-operating position (P2) of minimum obstruction.

A modular foundation includes a central portion and a plurality of legs non-rotatably secured to and extending from the central portion. The plurality of legs are substantially equally spaced apart from each other wherein each leg includes a proximal end and a distal end. A ballast support adapter is attached to the distal end of each leg wherein the adapter is configured to support one or more ballast plates such that each leg can be independently positioned for leveling the foundation and supporting the monopole in a vertical position. A platform supports the monopole and is pivotally attached to the central portion wherein the platform is configured to move from a vertical position to a horizontal position.

A modular foundation includes a central portion and a plurality of legs non-rotatably secured to and extending from the central portion. The plurality of legs are substantially equally spaced apart from each other wherein each leg includes a proximal end and a distal end. A ballast support adapter is attached to the distal end of each leg wherein the adapter is configured to support one or more ballast plates such that each leg can be independently positioned for leveling the foundation and supporting the monopole in a vertical position. A platform supports the monopole and is pivotally attached to the central portion wherein the platform is configured to move from a vertical position to a horizontal position.

In a first aspect, a yaw system for rotating a nacelle with respect to a tower is provided. The yaw system comprises a gliding yaw bearing, an annular gear and a plurality of yaw drives, a braking disk and one or more braking disk for braking the rotation of the nacelle. In a further aspect, a tower adapter for a wind turbine is provided. The tower adapter comprises a first bearing component of a gliding yaw bearing and braking disk to brake the rotation of the nacelle with respect to the tower adapter. In yet a further aspect, a wind turbine comprising such a yaw system and/or such a tower adapter is provided.