Abstract: It stands out mainly for consisting of a nested configuration of electrolysis units (5), independently operated, the nominal power values of which are descendant in such a manner that, for any unit of the system, the sum of the nominal power of the smaller electrolysis units (5) is always greater than or equal to the “dead band” (DB) of said units, allowing reduction of the dead band of said hydrogen production system (4) to negligible levels, avoiding loss or discharge of the energy generated in said renewable power stations, preferably one or several wind farms (2) formed by a group of wind turbines (1), connected to the power grid (3) as a consequence of the implementation of a primary control service therein or, in general, of any other active power control service, thereby optimizing the total energy obtained.

Abstract: The invention controls the network frequency via an active power reserve obtained by interacting in a coordinated manner with the speed regulation that acts on the power generated or on the pitch angle, to guarantee primary or secondary regulation across the whole range of wind speed.

Abstract: System for producing electric energy and hydrogen based on renewable energy sources, such as wind energy from one or several wind turbines, and incorporating means for producing hydrogen. The system comprises a hybrid electrolyzer device, which comprises a combination of at least two different electrolysis technologies and at least one control device, which manages the hydrogen production between the two electrolyzers of the different electrolysis technologies; being at least one electrolyzer of a rapid dynamics electrolysis technology type and, at least the second one of a substantially slower dynamics electrolysis technology type.

Abstract: It stands out mainly for consisting of a nested configuration of electrolysis units (5), independently operated, the power output values of which are descendant in such a manner that, for any unit of the system, the sum of the power output values of the smaller electrolysis units (5) is always greater than or equal to the “dead band” (DB) of said units, allowing reduction of the dead band of said hydrogen production system (4) to negligible levels, avoiding loss or discharge of the energy generated in said renewable power stations, preferably one or several wind farms (2) formed by a group of wind turbines (1), connected to the power grid (3) as a consequence of the implementation of a primary control service therein or, in general, of any other active power control service, thereby optimising the total energy obtained.

Abstract: A power-management system and method for photovoltaic installations connecting to the grid incorporates monitoring active and/or reactive power, account being taken at all times of grid requirements, in order to allow temporary demand arising in the grid to be addressed, thereby contributing to regulation of the grid and to the stability and quality thereof.

Abstract: A variable speed wind turbine having a doubly fed induction generator (DFIG), includes an exciter machine mechanically coupled to the DFIG and a power converter placed between a rotor of the DFIG and the exciter machine. Thus, the power converter is not directly connected to the grid avoiding the introduction of undesired harmonic distortion and achieving a better power quality fed into the utility grid. Moreover, the variable speed wind turbine includes a power control and a pitch regulation.

Abstract: A variable speed wind turbine having a doubly fed induction generator (DFIG), includes an exciter machine mechanically coupled to the DFIG and a power converter placed between a rotor of the DFIG and the exciter machine. Thus, the power converter is not directly connected to the grid avoiding the introduction of undesired harmonic distortion and achieving a better power quality fed into the utility grid. Moreover, the variable speed wind turbine includes a power control and a pitch regulation.

Abstract: A variable speed wind turbine having a doubly fed induction generator (DFIG), includes an exciter machine mechanically coupled to the DFIG and a power converter placed between a rotor of the DFIG and the exciter machine. Thus, the power converter is not directly connected to the grid avoiding the introduction of undesired harmonic distortion and achieving a better power quality fed into the utility grid. Moreover, the variable speed wind turbine includes a power control and a pitch regulation.

Abstract: A variable speed wind turbine having a doubly fed induction generator (DFIG), includes an exciter machine mechanically coupled to the DFIG and a power converter placed between a rotor of the DFIG and the exciter machine. Thus, the power converter is not directly connected to the grid avoiding the introduction of undesired harmonic distortion and achieving a better power quality fed into the utility grid. Moreover, the variable speed wind turbine includes a power control and a pitch regulation.

Abstract: A method and system of active power reserve regulation in a wind farm with a communication network having a plurality of wind turbines that provide an active power reserve in order to support eventual power grid contingencies and to deliver an increase of power in case it is needed.

Abstract: The subject matter of the invention is the provision of a power-management system and method for photovoltaic installations connecting to the grid, which incorporates monitoring active and/or reactive power, account being taken at all times of grid requirements, in order to allow temporary demand arising in the grid to be addressed, thereby contributing to regulation of the grid and to the stability and quality thereof.

Abstract: A method and system of active power reserve regulation in a wind farm with a communication network having a plurality of wind turbines that provide an active power reserve in order to support eventual power grid contingencies and to deliver an increase of power in case it is needed.

Abstract: A method and system of active power reserve regulation in a wind farm with a communication network having a plurality of wind turbines that provide an active power reserve in order to support eventual power grid contingencies and to deliver an increase of power in case it is needed.

Abstract: A variable speed wind turbine having a doubly fed induction generator (DFIG), includes an exciter machine mechanically coupled to the DFIG and a power converter placed between a rotor of the DFIG and the exciter machine. Thus, the power converter is not directly connected to the grid avoiding the introduction of undesired harmonic distortion and achieving a better power quality fed into the utility grid. Moreover, the variable speed wind turbine includes a power control and a pitch regulation.

Abstract: The invention controls the network frequency via an active power reserve obtained by interacting in a coordinated manner with the speed regulation that acts on the power generated or on the pitch angle, to guarantee primary or secondary regulation across the whole range of wind speed.

Abstract: The invention relates to wind turbines provided with doubly fed induction generators and with at least one power converter which is novel in that, under certain circumstances, it enables the turbine to operate as a full converter (FC) system, as a doubly fed (DFIG) system or as an asynchronous (AS) system, thereby increasing turbine availability.

Abstract: System for producing electric energy and hydrogen based on renewable energy sources, such as wind energy from one or several wind turbines, and incorporating means for producing hydrogen. The system comprises a hybrid electrolyzer device, which comprises a combination of at least two different electrolysis technologies and at least one control device, which manages the hydrogen production between the two electrolyzers of the different electrolysis technologies; being at least one electrolyzer of a rapid dynamics electrolysis technology type and, at least the second one of a substantially slower dynamics electrolysis technology type.

Abstract: The present invention describes a pitch control system comprising a principal converter, and auxiliary converter, a direct current motor and a power storage system (accumulator) and has four different operation modes: normal, fault (first level), fault (second level) and emergency. In the case that a fault is detected, the system can move the motor in order to move the vanes to the desired position by making a controlled adjustment.

Abstract: A variable speed wind turbine having a doubly fed induction generator (DFIG) includes an exciter machine mechanically coupled to the DFIG and a power converter placed between a rotor of the DFIG and the exciter machine which guarantees a stable voltage to the power converter. Thus, the power converter is not directly connected to the grid allowing the continuous operation of the system during a low voltage event in the grid.

Abstract: A variable speed wind turbine having a doubly fed induction generator (DFIG), includes an exciter machine mechanically coupled to the DFIG and a power converter placed between a rotor of the DFIG and the exciter machine. Thus, the power converter is not directly connected to the grid avoiding the introduction of undesired harmonic distortion and achieving a better power quality fed into the utility grid. Moreover, the variable speed wind turbine includes a power control and a pitch regulation.