The invention relates to a robotised device and to a method for changing oil in the multipliers of wind turbines which includes a tractor device (300) such as a caterpillar tractor moving by means of magnetic soles over the belts of said caterpillar robot, in which a double tank (100) is secured to the upper portion of said tractor (300), including two sealed compartments (100a, 100b), wherein a first compartment is used for transporting clean oil and a second compartment is used for transporting the used oil; and wherein the tractor machine (300) also includes a hose (101) connected to a pump (102a, 102b) which in turn is connected to an inlet of the tank (100); wherein said inlet (105) comprises, in turn, two electrically controlled valves configured to control the flow towards the hose (101) of the oil from either compartment (100a, 100b) of the double tank (100).

Electric energy eolian generator, made of relatively limited sizes, particularly for installations on inhabited environments, adapted to operate also under conditions of strong wind. Generator comprising a rotating rotor (6) supported by a support structure (7) and adapted to support the rotating vanes (60) and the electric energy generator (42, 43), connected mechanically to the vanes (60) and actuated in rotation by the rotation of the same vanes, for generating the electric energy. Generator in which the rotor (6) is supported articulated by means of support and articulation means (21; 111; 123), an end portion of which is pivoted to both the rotor (6), through leverage means (29, 30), and the upper end portion of the support structure (7). There are also described in detail the structural configuration of the rotor (6), the electric generator (42, 43), and the vanes (60) and further component parts of the eolian generator, as well as the operation of this latter.

The objective of the present invention is to reduce a decrease in the amount of power supply resulting from gusts when an output limiting operation is being executed. Provided is a wind power generation system that, in the case of an output limiting operation being performed having the reduction of grid frequency as the objective, increases the output of other operating wind turbines when at least one wind turbine has paralleled off in response to wind conditions.

It comprises a first member (10) with a plate (10a) attached and substantially covering at least one portion of a second member (20), both members (10, 20) being rotatable relative to each other and defining a tortuous way (30), and it further comprises a brush sealing (40) attached to the first member (10) and resting on a siding plate (90, 90a, 90b) in the second member (20) such that an inner gap (50) formed between said first and second members (10, 20) is sealed. A flexible member (45) may be provided between the brush sealing (40) and the first member (10) for joining them in a flexible way.

The present invention relates to a wind power plant for converting wind energy to electrical energy at sea, comprising a plurality of wind turbines (2), a floatable frame work including at least two support elements (3a-b) adapted to support the wind turbines and arranged so that an opening (7) is formed between the support elements, and an arrangement for connecting the frame work to a fundament arranged in the sea, including an elongated beam (9) extending through the opening in the frame work and protruding on both sides of the frame work, a connection unit (10) for connecting one end (17) of the beam to the fundament, and a plurality of wire cables (14a-h) arranged between the beam and the frame work in order to mechanically connect the beam to the frame work.

A wind turbine assembly for a roof, tower or other elevated support has a trio of rotors disposed at 120 degrees for capturing wind from any direction, the rotors providing torque to a common drive shaft which is available for rotating a device, the power requirement of which is matched to the turbine output. A variant has a pair of rotors for operating in a prevailing wind. The rotor shafts have slip drive devices permitting the rotor shafts to rotate at different speeds.

The present disclosure relates to a multi-type wind turbine. The present disclosure may be configured such that a plurality of arms are combined with one tower in a radial direction, and a unit generator having a blade is provided at the plurality of arms, respectively, and at least two of the unit generators are rotated in opposite directions to each other. Furthermore, both ends of the arm may be located both sides thereof on the basis of the height directional central line of the tower to be fixed thereto or both ends of the arm may be located at one side of the tower to be rotatably combined therewith. Furthermore, the rotation speed and tilt angle of the blade of the unit generator may controlled in an individual manner or controlled in a grouped manner. Furthermore, the unit generator may include a main blade and a sub-blade which is smaller than the main blade.

Wind turbine comprising a main generator; a tower with a frame; a hub carrying one or more blades and being rotatably mounted on the frame; a plurality of power-producing windings mounted to the hub and a plurality of magnetic field windings mounted to the frame, in such a way that said power-producing windings and said magnetic field windings make up at least one auxiliary asynchronous generator; a power source; and a power electronic converter for each auxiliary asynchronous generator. Each power electronic converter being electrically connected with the power source and with the magnetic field windings of its related auxiliary asynchronous generator, such that each power electronic converter can control operation of its related magnetic field windings.

The invention relates to a method of automatically identifying suggestions regarding how to remedy wind turbine faults, said method comprising: - establishing and storing a plurality of fault reports (FR), each fault report (FR) at least comprising fault symptom information (FSI) comprising data of identified fault symptoms of a previously occurred fault, and fault remedy information (FRI), said fault remedy information (FRI) comprising data regarding how said previously occurred fault was remedied, - collecting fault related data (FRD), said fault related data (FRD) at least comprising data from one or more wind turbines exposed to an occurring fault (Fl), - by means of a data processing arrangement (PA) performing data processing, said data processing comprising correlation of said fault related data (FRD) with data from one or more of said stored fault reports (FR), and - based on said correlation establishing one or more fault remedy suggestions (FRS) comprising suggestions regarding how to remedy said occurring fault (Fl) related to said one or more wind turbines based on said data processing. The invention furthermore relates to a system for automatically identifying suggestions regarding how to remedy wind turbine faults.

A wind turbine (1) having a vertical axis, comprising a central tower (3), a wind vane (14), a supporting disk (6, 8) that is rotatably mounted on the tower (3), and blades (10), each rotatably mounted on the supporting disk (6, 8) between a driving direction (M) substantially perpendicular to the wind vane (14), and a passive direction (P) substantially parallel to the wind vane (14), said wind turbine (1) comprising: a system (20) for guiding the blades (10), configured to maintain a constant direction for each blade (10), in relation to the wind vane (14), over a predetermined angular amplitude (A), a device (21) for controlling the tilt of the blades (10) between the driving direction (M) and the passive direction (P).