Abstract: Method for controlling a wind turbine, comprising the steps of determining a boundary layer profile of the wind coming towards the wind turbine, determining the wind velocity at a predetermined height based on the boundary layer profile, and operating the wind turbine to maintain the emitted noise below a predetermined noise level when the wind velocity at the predetermined height is below a predetermined value.

Abstract: A wind turbine comprising at least a blade (11) having an aerodynamic profile with a leading edge (13), a trailing edge (15) and suction and pressure sides between the leading edge (13) and the trailing edge (15) that includes an anti-noise device (31) placed on the suction side formed by elements (33) that modify the frequency spectra of the boundary layer noise. Preferably the anti-noise device (31) is placed on the suction side between two sections corresponding to chord positions in the range of 40%-95% of the chord length, measured from the leading edge (13).

Abstract: Anti-noise wind turbine. A wind turbine (11) which comprises a blade rotor which activates an electric generator and control mechanisms for said rotor in which the blades (13) include mechanisms which allow the reduction of its lift on a length, measured from its tip, less than or equal to its radius R and said control mechanisms allow said lift reduction mechanisms to be activated cyclically during the passing of each blade through a circular sector S less than or equal to 160°. The invention also refers to an operation method for said wind turbine with which said lift reduction mechanisms are cyclically operated during the passing of each blade through a circular sector S delimited between two hypothetical radii located, following the direction of the blades, at 10 and 170° from the hypothetical radius at which a blade (13) reaches maximum height.

Abstract: A climatisation system for wind turbines which comprise: a first heat exchanger (10) in the nacelle (1) for exchanging heat with an element of the nacelle for which the temperature needs to be controlled; a second heat exchanger (20) outside the nacelle (1) for exchanging heat with a first exchange unit (21); a first section (12) of a climatisation circuit for: connecting the first heat exchanger (10) with the second heat exchanger (20); circulating a liquid coolant between the first heat exchanger (10) and the second heat exchanger (20); impulsion units (100) for circulating the liquid coolant on the first section (12) of the climatisation circuit; a shut off valve (200); and expansion tank (400); an expansion valve (300) between the first heat exchanger (10) and the second heat exchanger (20).

Abstract: Blade (1) extending along a geometric axis (1gXY/1gYZ) from a root (111XY/111YZ) where the blade (1) is joined to the rotor (2) to a tip (122XY/122YZ). The blade has in a projection on a side/front plane XY/YZ a side/front root portion (11XY/11YZ) extending from the side/front root (111XY/111YZ) to a first intermediate side/front point (112XY/112YZ); a side/front tip portion (12XY/12YZ) extending from a second intermediate side/front point (121XY/121YZ) to the side/front tip (122XY/122YZ). The side root portion (11XY) forms an acute angle ?1 with the axis y in the side root (111XY), 0°??1?10° and the side tip portion (12XY) forms an acute angle ?2 with the axis y in the second intermediate side point (121XY), 0°??2?10°. The front root portion (11YZ) forms an acute angle ?1 with the front pitch axis (1pYZ) in the front root (111YZ), ?10°??1?10° and the front tip portion (12YZ) forms an acute angle ?2 with the front pitch axis (1pYZ) in the second intermediate front point (121YZ), 0°??2?10°.

Abstract: The invention relates to an optimised wind turbine blade including: a first component (7) having an aerodynamic profile with a leading edge (11), a blunt trailing edge (13) with a thickness T greater than 2 mm and suction and pressure sides (17, 19) between the leading edge (11) and the blunt trailing edge (13); and a second component (9, 12) for reducing the noise from the blunt trailing edge, having a constant cross-section along the radius of the blade, which is securely joined to the blunt trailing edge (13) of the first component (7) in at least part of the wind turbine blade using coupling means that enable same to be replaced.

Abstract: A wind turbine comprising at least a blade (11) having an aerodynamic profile with a leading edge (13), a trailing edge (15) and suction and pressure sides between the leading edge (13) and the trailing edge (15) that includes an anti-noise device (31) placed on the suction side formed by elements (33) that modify the frequency spectra of the boundary layer noise. Preferably the anti-noise device (31) is placed on the suction side between two sections corresponding to chord positions in the range of 40%-95% of -the chord length, measured from the leading edge (13).

Abstract: A climatisation system for wind turbines which comprise: a first heat exchanger (10) in the nacelle (1) for exchanging heat with an element of the nacelle for which the temperature needs to be controlled; a second heat exchanger (20) outside the nacelle (1) for exchanging heat with a first exchange unit (21); a first section (12) of a climatisation circuit for: connecting the first heat exchanger (10) with the second heat exchanger (20); circulating a liquid coolant between the first heat exchanger (10) and the second heat exchanger (20); impulsion units (100) for circulating the liquid coolant on the first section (12) of the climatisation circuit; a shut off valve (200); and expansion tank (400); an expansion valve (300) between the first heat exchanger (10) and the second heat exchanger (20).