Abstract: A floating platform (1) to support offshore structures intended to generate electricity, this platform comprising a load-bearing support base (2) made of concrete and defining a longitudinal axis (L), this support base (2) being provided with three vertices (3, 4, 5) and an intermediate point (6) located near its geometric center; a plurality of vertical bodies (8) made of concrete which extend from the support base (5) at said vertices (3, 4, 5) and at the intermediate point (6). A vertex (3) of the load-bearing support base (2) is arranged in a longitudinally forward position with respect to the other two vertices (3, 4) and the load-bearing support base (2) comprises a pair of main connection arms (18) suited to directly connect the vertex (3) in a longitudinally forward position with respect to the other two vertices (3, 4) so as to define a substantially arrow-like shape in plan view. A method for the construction of a floating platform (1) to support offshore structures intended to generate electricity.

Abstract: A joint for the oscillating connection of the rotary shaft of a wind turbine includes a box-shaped hub defining a longitudinal axis and having a pair of holes longitudinally opposite and aligned with each other, a shaft head adapted to be connected to the rotary shaft and having a pair of pivots designed to be inserted in the holes of the hub and having a cylindrical outer surface and a transverse end edge, and a pair of hinges placed at the level of the pair of holes to promote the oscillating connection of the pivots to the hub. Each hinge includes at least one plain bearing mounted on the outer surface of a corresponding pivot, damper elements operatively interacting with the edge of the hub, and a connection system adapted to mutually connect the at least one plain bearing with the damper elements so as to obtain a unitary assembly.

Abstract: A self-supporting nacelle structure for wind turbines, adapted to house a transmission assembly, includes a first shaft connected to a wind turbine rotor hub and to a gearbox, and a second shaft connected to the gearbox and to a generator. The nacelle structure further includes a tubular outer shell defining delimiting a space for housing the transmission assembly, a vertical tubular extension with an upper end edge connected to the outer shell and a lower end edge secured to a tower, an inner frame secured to the outer shell and having a plurality of transverse ribs and a plurality of longitudinal ribs joining the transverse ribs, each transverse rib extending in a closed path, completely enclosing the transmission assembly. The outer shell has a portion with a closed cross section, with at least one transverse rib secured thereto to provide the structure with high torsional and flexural stiffness.

Abstract: A joint (1) for the oscillating connection of the rotary shaft (S) of a wind turbine, comprising a box-shaped hub (2) which defines a longitudinal axis (L) and is provided with one pair of holes (4) longitudinally opposite and aligned with each other, a shaft head (3) suited to be connected to the rotary shaft (S) and having one pair of pivots (7) which are designed to be inserted in the holes (4) of the hub (2) and have a cylindrical outer surface (8) and a transverse end edge (9), and one pair of hinges (10) placed at the level of the pair of holes (4) to promote the oscillating connection of said pivots (4) to the hub (2).

Abstract: A wind turbine control system includes a thrust sensor and a braking system, and allows an increase in wind rotor load to be detected instantaneously and corrective action to be initiated. The system includes additional features such as deceleration control. In one embodiment, a turbine controller regulates the rate of deceleration of the rotor shaft.

Abstract: A self-supporting nacelle structure for wind turbines, adapted to house a transmission assembly, includes a first shaft connected to a wind turbine rotor hub and to a gearbox, and a second shaft connected to the gearbox and to a generator. The nacelle structure further includes a tubular outer shell defining delimiting a space for housing the transmission assembly, a vertical tubular extension with an upper end edge connected to the outer shell and a lower end edge secured to a tower, an inner frame secured to the outer shell and having a plurality of transverse ribs and a plurality of longitudinal ribs joining the transverse ribs, each transverse rib extending in a closed path, completely enclosing the transmission assembly. The outer shell has a portion with a closed cross section, with at least one transverse rib secured thereto to provide the structure with high torsional and flexural stiffness.

Abstract: The invention generally relates to two-bladed turbine nacelles and associated teetering hinges. In certain embodiments, the invention provides a hinge assembly encompassing a hub and two double elastomeric teeter bearings. In some aspects, the bearings are self-contained elements that can be preloaded in a controlled manner prior to their incorporation into the larger assembly.

Abstract: Systems for increasing the power productivity of two bladed teetering hinge, yaw controlled wind turbines by varying rotor shaft restraining torque and yaw angle.

Abstract: The invention generally relates to two-bladed turbine nacelles and platforms integrated into the nacelle structure. In certain embodiments, the invention provides an assembly encompassing a nacelle that houses a two-bladed turbine and a hoisting platform. The hoisting platform is integrated into the structure of the nacelle so as to form the roof of the nacelle.

Abstract: Systems and methods for increasing operational efficiency of wind turbines, especially offshore wind turbines. The invention discloses systems and methods for reducing the torque needed to rotate a rotor shaft axis with respect to the wind direction. Systems and methods for controlling the rotational speed of the rotor shaft axis are also disclosed.

Abstract: The invention generally relates to two-bladed turbine nacelles and associated teetering hinges. In certain embodiments, the invention provides a hinge assembly encompassing a hub and two double elastomeric teeter bearings. In some aspects, the bearings are self-contained elements that can be preloaded in a controlled manner prior to their incorporation into the larger assembly.

Abstract: The invention generally relates to two-bladed turbine nacelles and associated teetering hinges. In certain embodiments, the invention provides a hinge assembly encompassing a hub and two double elastomeric teeter bearings. In some aspects, the bearings are self-contained elements that can be preloaded in a controlled manner prior to their incorporation into the larger assembly.

Abstract: Systems and methods for increasing operational efficiency of wind turbines, especially offshore wind turbines. The invention discloses systems and methods for reducing the torque needed to rotate a rotor shaft axis with respect to the wind direction. Systems and methods for controlling the rotational speed of the rotor shaft axis are also disclosed.

Abstract: The invention generally relates to two-bladed turbine nacelles and associated teetering hinges. In certain embodiments, the invention provides a hinge assembly encompassing a hub and two double elastomeric teeter bearings. In some aspects, the bearings are self-contained elements that can be preloaded in a controlled manner prior to their incorporation into the larger assembly.

Abstract: Systems for increasing the power productivity of two bladed teetering hinge, yaw controlled wind turbines by varying rotor shaft restraining torque and yaw angle.

Abstract: A wind turbine control system comprising a thrust sensor and a braking system. The system allows an increase in wind speed to be detected instantaneously and corrective action to be initiated. The system comprises additional features such as deceleration control.

Abstract: The invention generally relates to two-bladed turbine nacelles and platforms integrated into the nacelle structure. In certain embodiments, the invention provides an assembly encompassing a nacelle that houses a two-bladed turbine and a hoisting platform. The hoisting platform is integrated into the structure of the nacelle so as to form the roof of the nacelle.

Abstract: The invention generally relates elevator assemblies suitable for lifting heavy components associated with wind turbines. In certain embodiments, the invention provides an elevator assembly encompassing a wind turbine nacelle and an elevator frame. The elevator frame is configured to surround a tower supporting the nacelle of the wind turbine and is equipped with a means for balancing the frame along a horizontal axis. In some aspects, the means for balancing the frame include a ballast tank system.

Abstract: A tension-legged offshore submerged platform, in hybrid concrete-steel solution, having a pre-stressed concrete central body, a steel peripheral structure, which is connected to the central body through steel stiffeners, and further to a basement for such a platform.

Abstract: System for converting wind in deep water, stabilised through blocked hydrostatic pressure, comprising a group of rotors with horizontal axis provided with two blades, accommodated in a nacelle, one permanent magnet generator, at least one transformer and at least one rectifier, as well as further auxiliary components, a group for anchoring the system onto the sea floor, a subsystem for transmitting power from the rotor group to the generator and a subsystem for transmitting electrical power from the submerged body to the dry land and characterised in that said electrical energy generator, transformer, rectifier and said auxiliary components are located in a submerged body beneath the water level.