Abstract: Control method for a wind turbine which comprises the steps of obtaining a first signal regarding the azimuthal position for each blade, obtaining at least one signal indicative of wind speed, and calculating a blade pitch angle control term. The step of calculating the blade pitch angle control term comprises the use of at least one function dependent on the at least one signal indicative of wind speed and the at least one function dependent on the at least one signal indicative of wind speed includes an increasing piece within a range of wind speed values below a nominal wind speed.

Abstract: A wind turbine tower wall having an orifice for accessing the interior of the tower, and an outer surface defined by generatrices; and a reinforcement frame joined to the tower in the orifice zone, and comprising least two parts joined one to each other. Each part has a mid-plane that is parallel to at least one generatrix, the mid-planes of at least one pair of adjacent parts forming an angle other than 180° therebetween. It enables the obtention of a frame more conformed to the curvature of the tower, combining savings in the material of said frame, greater optimization of the resistance of the tower and reduced stress concentration.

Abstract: The present invention relates to a manufacturing process in situ of concrete towers for wind turbines which enables executing a design of concrete tower manufactured in situ by means of climbing formwork, which reduces the execution time of the concrete tower, where the invention also relates to the associated concrete tower for wind turbine.

Abstract: A wind turbine is disclosed which comprises a control system configured to execute at least one ice removal routine which comprises a heating stage of at least one of the blades (3), and a mechanical removal ice stage. A wind turbine removing ice method is also disclosed which comprises a stage wherein the presence of ice is detected on at least one of the blades and, once said presence of ice is detected, comprises a stage wherein at least one ice removal routine is activated which comprises, in turn, a heating stage of at least one of the blades and a mechanical removing ice stage on at least said blade.

Abstract: The tower comprises: a wall having an orifice for accessing the interior of the tower, and an outer surface defined by generatrices; and a reinforcement frame joined to the tower in the orifice zone, and comprising least two parts joined one to each other. Each part has a mid-plane that is parallel to at least one generatrix, the mid-planes of at least one pair of adjacent parts forming an angle other than 180° therebetween. It enables the obtention of a frame more conformed to the curvature of the tower, combining savings in the material of said frame, greater optimisation of the resistance of the tower and reduced stress concentration.

Abstract: The present invention relates to a method for assembling concrete towers with a decreasing sector for wind turbines which comprises a phase of pre-assembly of concrete tower sections which allows to reduce the space required during the stage of pre-assembly of the different tower section prior to lifting and the civil work associated to set said space up wherein, during the pre-assembly phase, a first annular section is confined at least partially within the inner space defined by a second annular section, the invention also relating to the wind turbine associated to said method of assembly.

Abstract: The present invention relates to a method for the assembly of frustoconical concrete towers comprising a step of placing and positioning of at least one subset of a tower section formed by at least two segments in an area close to the base of the tower, a step of assembling the subset of the tower section by attaching at least two segments, so that the assembled subset is freestanding and a step of stacking the assembled subset onto an immediately lower tower section.

Abstract: The present invention relates to a wind turbine with a concrete tower wherein the tower comprises a plurality of sections formed by segments a platform system comprising a plurality of platforms, wherein the platform system is configured to allow access to junction areas between sections wherefrom optionally, the execution of joints between adjacent sections may be carried out, the platforms situated inside the tower once erected being detachable, stackable and transportable.

Abstract: The present invention relates to a method for assembling concrete towers with a decreasing sector for wind turbines which comprises a phase of pre-assembly of concrete tower sections which allows to reduce the space required during the stage of pre-assembly of the different tower section prior to lifting and the civil work associated to set said space up wherein, during the pre-assembly phase, a first annular section is confined at least partially within the inner space defined by a second annular section, the invention also relating to the wind turbine associated to said method of assembly.

Abstract: The wind turbine assembly system of the present invention comprises a lifting structure comprising at least first structural support elements configured to transmit stresses to the wind turbine tower during the hoisting of a wind turbine component and a crane configured to displace the wind turbine component towards the tower axis, the system further comprising a displaceable climbing element with respect to the lifting structure by means of guiding mechanisms, the displaceable climbing element incorporating second structural support elements dimensioned to at least partly support the weight of the lifting structure, where the first structural support elements are displaceable so that their relative position can vary with respect to the lifting structure.

Abstract: Control method for a wind turbine which comprises the steps of obtaining a first signal regarding the azimuthal position for each blade, obtaining at least one signal indicative of wind speed, and calculating a blade pitch angle control term. The step of calculating the blade pitch angle control term comprises the use of at least one function dependent on the at least one signal indicative of wind speed and the at least one function dependent on the at least one signal indicative of wind speed includes an increasing piece within a range of wind speed values below a nominal wind speed.

Abstract: The present invention can be included in the technical field of moulds for precast concrete element production and relates to a mould for precast concrete element production wherein the relative position of the side walls that define the upper and lower flanks of the precast concrete element is defined by elements that are independent from the rest of the mould, as well as to the manufacturing process that uses the aforementioned mould for precast concrete element production, the precast concrete element thus obtained and a wind turbine comprising, in turn, at least one precast concrete element produced using said mould.

Abstract: The invention relates to a control method for wind turbines provided with a blade pitch angle control system and which are determined to be positioned in a misaligned manner with respect to the direction of incident wind. The method described herein makes use of a series of data and measurements captured in the wind turbine itself or its surroundings to process said data and generate by means of a series of processes and calculations a series of values which are used in commands on the wind turbine blade pitch angle control system to prevent anomalies and/or increase the efficiency thereof in said situation.

Abstract: The present invention relates to a wind turbine with blade pitch system with an angle between the longitudinal direction of the blade and axis of rotation of the bearing of the blade pitch system, disposing the driving plate of the blade pitch system between the blade and the bearing of the blade pitch system.

Abstract: The present invention relates to a method for the assembly of frustoconical concrete towers comprising a step of placing and positioning of at least one subset of a tower section formed by at least two segments in an area close to the base of the tower, a step of assembling the subset of the tower section by attaching at least two segments, so that the assembled subset is freestanding and a step of stacking the assembled subset onto an immediately lower tower section.

Abstract: Precast segment for wind turbine tower especially designed to be used in wind turbine towers installed in cold climates, and which comprises joint flanges showing a configuration intended to establish the boundaries for forming the joints between said precast segment and an adjacent precast segment and which comprises conduits provided with an inlet and an outlet, situated in the proximity of the joint flanges of the precast segment intended to house some heating cables that generate heat. The method comprises the use of the described precast segment and the stages of introducing heating cables in the conduits of the precast segment, applying current to said cables and removing the cables when a filler material used in the joint between precast segments has set.

Abstract: The present invention can be included in the technical field of moulds for precast concrete element production and relates to a mould for precast concrete element production wherein the relative position of the side walls that define the upper and lower flanks of the precast concrete element is defined by elements that are independent from the rest of the mould, as well as to the manufacturing process that uses the aforementioned mould for precast concrete element production, the precast concrete element thus obtained and a wind turbine comprising, in turn, at least one precast concrete element produced using said mould.

Abstract: The wind turbine assembly system of the present invention comprises a lifting structure comprising at least first structural support elements configured to transmit stresses to the wind turbine tower during the hoisting of a wind turbine component and a crane configured to displace the wind turbine component towards the tower axis, the system further comprising a displaceable climbing element with respect to the lifting structure by means of guiding mechanisms, the displaceable climbing element incorporating second structural support elements dimensioned to at least partly support the weight of the lifting structure, where the first structural support elements are displaceable so that their relative position can vary with respect to the lifting structure.