Abstract: The present invention provides a wind generator tower and a process for assembly thereof. A truncated conical tower assembled from reinforced concrete modules disposes of a tensioning system which provides greater resistance to the same and, in turn, the joints defined between the modules which form the tower are sealed.

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 describes a process and a unit, both enabling to attach a wind turbine tower to a foundation, as well as describes also a wind turbine incorporating the unit. The process features a stage of installation of a support element for the transmission of stresses from the tower to the foundation, followed by a stage of leveling the support element and pouring foundation concrete up to the support element's lower side so that the lower side is adhered to the poured concrete once it has set. The unit comprises at least one support element.

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: It describes a control system and method of a wind turbine to operate it in optimum output operation in situations wherein incidents occur. To do this a series of measurements are taken of elements in the surrounding area of the wind turbine which incide it to be able to calculate blade pitch angle set-points to reorientate or move the same until positions designated in accordance with said pitch angle set-point. The method described here is based, among other parameters, on the wind speed; so that it provides for at least two possible control situations in accordance with said speed: one when the speed is less than a rated value and another when said speed is greater than a rated value.

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 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 invention describes a process and a unit, both enabling to attach a wind turbine tower to a foundation, as well as describes also a wind turbine incorporating the unit. The process features a stage of installation of a support element for the transmission of stresses from the tower to the foundation, followed by a stage of levelling the support element and pouring foundation concrete up to the support element's lower side so that the lower side is adhered to the poured concrete once it has set. The unit comprises at least one support element.

Abstract: A wind turbine control method is described based on the performance of various measurements of the oscillations of the nacelle of the wind turbine for the purpose of carrying out a series of calculations, the results of which allow parameterization of certain actions on different wind turbine elements in order to dampen oscillations. In summary, it may be said that the object of the invention described herein is a wind turbine control method whereby the oscillations of the nacelle of the wind turbine are dampened in the presence of voltage dips in particular and, in general, in any event that is susceptible of reducing active current generation capacity.

Abstract: It allows simplificating the assembling of a wind turbine (1). The dowels (4) comprise: a) an upper surface (5); b) a lower surface (6); c) an inner side surface (7); d) an outer side surface (8); e) at least an intermediate fixing surface (12), located in one of the outer (8) or inner (7) side surfaces, between the upper (5) and lower (6) surfaces; and f) at least a first grooved housing (13) made in that of the side surfaces (7, 8) comprising the intermediate fixing surface (12), where the first grooved housing (13) communicates the intermediate fixing surface (12) with one of the upper (5) and lower (6) surfaces and is configured to accommodate joining cables (23).

Abstract: The present invention can be included in the technical field of power control systems of electrical generation units comprising a supervisory regulation link applicable to a generation unit which calculates operating parameters or orders based on temporary averages of the power measurement.

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 describes a process for controlling the active power injected into the grid by a generating plant for contributing to the stability of the power grid in the event of frequency variations where, in response to a deviation in grid frequency, each generating unit calculates an active power variation parameter generated based on a first parameter stored in said generating unit, said first parameter being representative of a respective contribution of said generating unit to a required variation in total active power of the generating plant, and where a central control unit of the generating plant connected to each generating unit updates the value of the first parameters when changes are produced therein.

Abstract: It allows a more complete cooling of the generator, comprising: a magnetic core with a crown (3) from the periphery whereof emerge teeth (4) which have coiled windings (5); an external cooling circuit (9) to carry a coolant fluid; at least one through-hole (12) running along the interior of each tooth (4), and at least one first duct (13), to connect the through-hole (12) with the external cooling circuit (9) and with the through-hole (12) so that it allows the passage of the coolant fluid, the first duct (13, 16) being interposed between one end (7, 8) of the tooth (4) and the winding (5).

Abstract: The present disclosure relates to a method for controlling a wind turbine of the type including a rotor, a generator, a frequency converter, a control unit and means for connecting to a wind farm grid, using means for receiving a local voltage reference value (VREF) and a regulator (1) which calculates the reactive power to be generated (QT) as a function of the voltage error (?V), such that it can be operated over the entire voltage range. The system also includes: at least one saturator element (2, 6, 7) in which the reactive power to be generated is limited, whereby the limits (Q—MAX, Q—MIN, QC—MAX, QC—MIN, QS—MAX, QS—MIN) are calculated dynamically as a function of the voltage, this block outputting a reference reactive power of the wind turbine (Q—REF, QC—REF, Qs—REF); and an element (3) for calculating the actual limit of the active power (PMAX) as a function of the pre-limited reactive power (Q—REF, Qs—REF) and the apparent power available at that moment.

Abstract: A wind turbine blade bearing with a fixed ring fixed to a hub of the wind turbine and a moving ring whereto the blade is fixed by corresponding fixing elements; the bearing making it possible to avoid the collision of the blade with the wind turbine tower by providing a separation therebetween via the disposal of the blades at an angle with respect to the wind turbine hub; where the angle is given by the bearing of the blade pitch change system. The separation is achieved since a rear face of the moving ring is in contact with the blade so that a plane defined by the rear face is perpendicular to the longitudinal direction of the blade, the rear face not being perpendicular to the axis of rotation of the bearing.

Abstract: The present disclosure describes a system for joining a gondola to the concrete tower of an aerogenerator, wherein the concrete tower is formed by a lower annular section, one or several intermediate annular sections and an upper annular section, including a flat annular support which is inserted between an upper surface of the upper annular section of the tower and the lower surface of a yaw bearing that supports the gondola, the flat annular support comprising orifices wherethrough a plurality of joining means pass, each of which is fixed to the bottom of the upper annular section of the tower and to the bottom of the yaw bearing.

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.

Abstract: The control method of a wind turbine generator increases the speed range of wind turbine generators, maximizing the operation and efficiency thereof, in addition to lengthening their service life, on minimizing the extreme and fatigue loads to which the wind turbine generators are subject, and which are due mainly to the stops and disconnections thereof as a result of strong gusts of wind. More specifically, the control method of the present invention stands out essentially for being based on the control of the reactive current circulating through the electric generator, said reactive current control being carried out in accordance with the rotational speed (?g) for the purpose of reducing the voltage at the converter terminals on the generator side, or rotor voltage (VR), which ultimately allows a transitional increase in the speed range of the wind turbine generator.