Abstract: The invention relates to a supporting element (8) for an offshore wind turbine (3), comprising a base body (1) formed by a circular or polygonal basement (4), a shaft (5) with vertical walls and a plurality of vertical cavities (6) extending over the entire height thereof and a slab (2) dispose on the shaft (5) of the base body (1), on which slab (2) a wind turbine (3) is positioned and secured. The base body (1) of the supporting element (8) is produced using sliding formwork, from the basement (4) up to the upper base thereof.

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: System and method for controlling a wind farm, for wind farms comprising a plurality of wind turbines having a rotor, a generator, a control unit and means for connecting to the mains of the wind farm, said wind turbines having means for generating reactive power according to the instructions of the wind farm control system, said control system calculating a global reactive power demand to be produced by the whole wind farm on the basis of the voltage at the connection point or the power factor required, and said control system sending reactive power instructions to the wind turbines of the farm, the central control system for the wind turbines receiving information based on one or more parameters indicating the level of heating of the electrical components of the wind turbines, the generation of reactive power being distributed between the various wind turbines.

Abstract: Wind farm, of the kind that comprises a series of wind turbine generators, which consist of a rotor, a generator, a control unit and means of connection to the computing network for the wind farm of which they form part, in such a way that at least two of the wind turbine generators in the farm can assume a leader hierarchy for the wind farm, accessing the operating data of the rest of the wind turbine generators, calculating and sending instructions to the rest of the wind turbine generators making up that wind farm, and a subject hierarchy, receiving and following the instructions coming from the leader wind turbine generator of the wind farm.

Abstract: Control system and method for a wind turbine generator, such wind turbine being a variable speed turbine and having a doubly fed induction generator, said control system comprising means for determining the operating temperature of the different subsystems, having the means for dividing the generation of reactive power, both inductive and capacitive, between the stator (3) and the network side converter (6), based on the criterion of keeping every subsystem operating temperature as far away as possible from its corresponding limit, the method comprising the following steps: determine the electrical elements temperature; calculate the closeness of those temperatures to each element corresponding limit temperature; and distribute the reactive power production between the stator (3) and the network side converter (6), based on the criterion of keeping every subsystem operating temperature as far as possible from its corresponding limit.

Abstract: A method for controlling a power generation plant may be provided. First, an equivalent grid voltage may be estimated based on electric magnitudes measured at a connection point of the power generation plant and an equivalent model of a power grid to which the power generation plant is connected. Then, on the basis of said estimated equivalent voltage, a command indicative of reactive power to be produced by the power generation plant may be generated.

Abstract: Wind turbine control may be provided. First, a control parameter indicative of foreseeable fluctuations in a rotational speed of a rotor due to wind turbulence may be obtained. The first control parameter may be calculated based on a first signal indicative of a wind power and a second signal indicative of wind turbulence intensity. Then, the control parameter may be compared with a threshold value. Next, a maximum power to be generated by the wind turbine may be reduced if the control parameter exceeds said threshold.

Abstract: A wind turbine control method for dampening vibrations of a transmission system, even in the presence of voltage dips and in any event that is susceptible to reducing active current generation capacity, is provided. First, for example, an initial torque or power instruction may be calculated based on a turbine operating state. Next, a torque or power adjustment term associated with dampening vibration modes of a turbine transmission system may be calculated. Then, a final torque or power instruction may be calculated by, for example, applying the adjustment term to the initial instruction. Finally, the final torque or power instruction may be transformed into a current instruction for controlling the wind turbine.

Abstract: The disclosure describes implementations of methods, systems and apparatuses that are configured to facilitate normal operating characteristics for a wind turbine during normal operation, as well as during voltage irregularities. In an implementation, a turbine controller coordinates operating primary turbine systems and ancillary turbine systems during normal operation and during voltage irregularities. During normal operation, the turbine controller coordinates powering both primary and ancillary turbine systems through a power supply. During a detected voltage event, ancillary turbine systems may be transitioned to a having an uninterruptible power supply power these systems. However, the turbine controller coordinates maintaining the power supply as the sole powering device for primary turbine systems despite a voltage irregularity.

Abstract: The disclosure details implementations of apparatuses, methods, and systems for facilitating efficient operational characteristics for wind turbine generators. The system includes features that facilitate protecting the power semiconductors used in the power converters of variable speed power generation systems from excessive junction temperatures. These features may be achieved by implementing a synchronous speed avoidance (SSA) controller implemented to facilitate a determined active control range as an electrical torque/power-generator rotor speed controller. The determined active control range may be centered around a generator synchronous speed. The upper and lower bounds of the active control range are determined based on operational junction temperature characteristics of power semiconductors used within a power converter, reliability characteristics of the power semiconductors and/or current ratings of the power semiconductors.

Abstract: The disclosure details implementations of apparatuses, methods, and systems for regulating DC bus voltages. In an implementation, the system is configured to regulate the DC bus voltage directly by operating at the DC bus rather than indirectly on the AC side of the DC bus. In one implementation, the DC voltage regulator is configured with components including a DC voltage regulator power control board, a switching device, a resistor, and a flyback diode. In one non-limiting implementation example, the DC voltage regulator may be used to control the DC bus voltage of a doubly fed induction generator of a wind turbine. In this implementation, the DC voltage regulator effectively protects the converter of the induction generator and also reduces the transient torques on the generator shaft during voltage irregularities. This, in turn, reduces excessive wear on the wind turbine gearbox by limiting fatigue loads on the gear teeth that may result from transient torques.