According to one embodiment, a pumped-storage power generation control device includes a control section that controls at least one of the pumping input of the pumped-storage power generation facility in the pumping operation and the power output of the pumped-storage power generation facility in the power generating operation such that a value, which is obtained by a predetermined calculation using the measurement value relating to the pumping input of the pumped-storage power generation facility in the pumping operation and the measurement value relating to the power output of the pumped-storage power generation facility in the power generating operation, becomes a set target value.

A method and associated apparatus for determining at least one parameter of an energy conversion device, the method comprising determining one or more losses associated with the energy conversion device; determining at least one parameter of the energy conversion device by improving, varying, optimising or maximising at least one operational variable and/or output of the energy conversion device (such as a power output of the energy conversion device) by reducing, minimising or optimising the one or more losses or a function thereof; and determining a value, range or function of at least one parameter of the energy conversion device (such as a power or torque curve) associated with, or that results in, the improvement, variation, optimisation or maximisation of the at least one operational variable (e.g. power output) and/or output of the energy conversion device and/or that results in the reduction, minimisation or optimisation of the one or more losses.

A wind park with wind turbines and airborne wind energy systems where a first zone and a second zone is defined for at least one of the airborne wind energy systems such that the risk of collision between a part of that airborne wind energy systems and a part of one of the wind turbines is higher when the airborne unit of that airborne wind energy system is in the second zone than when it is in the first zone, and different control parameters are applied to the control of at least one of the wind turbine and the airborne wind energy system depending on the position of the airborne unit relative to the defined zones.

The present invention provides a turbine control system and method. The turbine control system includes at least one control means accommodated on a turbine rotor wherein the control means is actuated by a controller in a first or second direction on a plane of the rotor turbine to control a rate of change of moment of inertia of the turbine and thereby controlling the operation of the turbine. The invention also provides a turbine farm including a plurality of turbines operating to provide a maximum and stable power output. The farm includes a master controller configured for controlling the operation of each of the plurality of turbines and individual controller of the turbines efficiently.

A wind park with wind turbines and airborne wind energy systems where a first zone and a second zone is defined for at least one of the airborne wind energy systems such that the risk of collision between apart of that airborne wind energy systems and a part of one of the wind turbines is higher when the airborne unit of that airborne wind energy system is in the second zone than when it is in the first zone, and different control parameters are applied to the control of at least one of the wind turbine and the airborne wind energy system depending on the position of the airborne unit relative to the defined zones.

According to one embodiment, a pumped-storage power generation control device includes a control section that controls at least one of the pumping input of the pumped-storage power generation facility in the pumping operation and the power output of the pumped-storage power generation facility in the power generating operation such that a value, which is obtained by a predetermined calculation using the measurement value relating to the pumping input of the pumped-storage power generation facility in the pumping operation and the measurement value relating to the power output of the pumped-storage power generation facility in the power generating operation, becomes a set target value.

A method and associated apparatus for determining at least one parameter of an energy conversion device, the method comprising determining one or more losses associated with the energy conversion device; determining at least one parameter of the energy conversion device by improving, varying, optimising or maximising at least one operational variable and/or output of the energy conversion device (such as a power output of the energy conversion device) by reducing, minimising or optimising the one or more losses or a function thereof; and determining a value, range or function of at least one parameter of the energy conversion device (such as a power or torque curve) associated with, or that results in, the improvement, variation, optimisation or maximisation of the at least one operational variable (e.g. power output) and/or output of the energy conversion device and/or that results in the reduction, minimisation or optimisation of the one or more losses.

A power generator comprises a casing (110) that in use is deployed in an environment in which the casing is subjected to an excitation motion such as wave motion. A series of masses (101, 103a-c) is located within the casing, wherein at least a first mass is coupled to the casing by a first spring (102), each of the masses is coupled to at least one adjacent mass by a respective spring, and wherein the casing and the series of masses bring a motion of the power generator into resonance with the excitation motion. A plurality of electric machines each comprising a stator and a field source are each associated with a corresponding mass such that a relative motion of a mass and associated electric machine generates electrical power. A power takeoff circuit receives generated electrical power from the plurality of electric machines and outputs electrical power from the power generator.

A power generator comprises a casing (110) that in use is deployed in an environment in which the casing is subjected to an excitation motion such as wave motion. A series of masses (101, 103a-c) is located within the casing, wherein at least a first mass is coupled to the casing by a first spring (102), each of the masses is coupled to at least one adjacent mass by a respective spring, and wherein the casing and the series of masses bring a motion of the power generator into resonance with the excitation motion. A plurality of electric machines each comprising a stator and a field source are each associated with a corresponding mass such that a relative motion of a mass and associated electric machine generates electrical power. A power takeoff circuit receives generated electrical power from the plurality of electric machines and outputs electrical power from the power generator.

A wave power generator comprises a buoyant casing (500) intended to float in a body of water. An electric machine (103) located within the casing has an armature and a field source, the electric machine having a fixed part coupled to the casing and a moving part. A counterweight assembly (104) is movable within the casing, comprising the moving part of the electric machine and wherein a relative movement of the counterweight assembly and the fixed part of the electric machine generates electric power. Power storage (400) stores power generated by the electric machine and a control system (200) determines a bi-directional energy flow between the power storage and the armature, wherein energy is returned to the electric machine to drive a motion of the counterweight assembly anti-symmetrically to a motion of the casing.