The present invention relates to a floating wind energy harvesting apparatus for offshore installation, the wind energy harvesting apparatus comprising: an elongated wind turbine body extending along a longitudinal wind turbine body axis, the wind turbine body comprising a lower body portion to be below a water surface when the wind energy harvesting apparatus is in operation and an upper body portion to be above the water surface when the wind energy harvesting apparatus is in operation; wind turbine blades attached to the upper body portion for converting wind energy to rotation of the wind turbine body around the longitudinal wind turbine body axis; an energy converter attached to the wind turbine body for converting the rotation of the wind turbine body in relation to a non-rotatable part to electrical energy; and anchorage means connecting the non-rotatable part to at least one anchor point via at least one float body.

In a method for generating electricity from an apparent wind turbine, a compressor compresses air into compressed air storage to be released at a later time to operate the apparent wind turbine. The method contemplates determining a minimum energy production threshold and a desired energy production threshold, detecting that energy generation from the apparent wind turbine falls below the minimum energy production threshold, and causing the apparent wind turbines to produce at least the minimum energy production threshold.

In a method for generating electricity from an apparent wind turbine, a compressor compresses air into compressed air storage to be released at a later time to operate the apparent wind turbine. The method contemplates determining a minimum energy production threshold and a desired energy production threshold, detecting that energy generation from the apparent wind turbine falls below the minimum energy production threshold, and causing the apparent wind turbines to produce at least the minimum energy production threshold.

Disclosed herein are systems and methods related to electric power transfer between an aerial vehicle of an airborne wind turbine and a power grid. An example power conversion system may include power converters, a DC bus connecting the power converters to the aerial vehicle, and an AC bus connecting the power converters to the power grid. The power converters may be configured to provide AC/DC power conversion between the aerial vehicle and the power grid. The power conversion system may also include switches operable to either (i) electrically connect a respective power converter to the DC bus or electrically isolate the respective power converter from the DC bus. The power conversion system may also include one or more power supplies that can be connected to the DC bus to provide backup power in the event a power converter or the power grid malfunctions.

Disclosed herein are systems and methods related to electric power transfer between an aerial vehicle of an airborne wind turbine and a power grid. An example power conversion system may include power converters, a DC bus connecting the power converters to the aerial vehicle, and an AC bus connecting the power converters to the power grid. The power converters may be configured to provide AC/DC power conversion between the aerial vehicle and the power grid. The power conversion system may also include switches operable to either (i) electrically connect a respective power converter to the DC bus or electrically isolate the respective power converter from the DC bus. The power conversion system may also include one or more power supplies that can be connected to the DC bus to provide backup power in the event a power converter or the power grid malfunctions.

A system for transporting fluid generated by a wind turbine includes at least one wind turbine for generating electrical power, wherein the wind turbine includes a fluid producing unit configured for generating a fluid by using the generated electrical power, a fluid pipeline system coupled to the wind turbine for transporting the generated fluid, and a pressure control system coupled to the fluid pipeline system for controlling the fluid flow of the fluid in the pipeline system. The pipeline system includes a transporting pipeline and a connection pipeline, wherein the connection pipeline is coupled to the wind turbine and the connection pipeline such that the fluid is transportable from the wind turbine to the transporting pipeline via the connection pipeline.

A system for transporting fluid generated by a wind turbine includes at least one wind turbine for generating electrical power, wherein the wind turbine includes a fluid producing unit configured for generating a fluid by using the generated electrical power, a fluid pipeline system coupled to the wind turbine for transporting the generated fluid, and a pressure control system coupled to the fluid pipeline system for controlling the fluid flow of the fluid in the pipeline system. The pipeline system includes a transporting pipeline and a connection pipeline, wherein the connection pipeline is coupled to the wind turbine and the connection pipeline such that the fluid is transportable from the wind turbine to the transporting pipeline via the connection pipeline.

The invention relates to a floatable wind turbine (1), comprising: a rotor (2), a generator (3) driven by the rotor, a nacelle (4) housing the generator, a floatable foundation (5), a mast section (6), electrolysis equipment (9) for producing hydrogen from a water mass (10) upon which the floatable foundation is floating during use, water treatment equipment (11) for preparing water from the water mass for use in the electrolysis equipment, and one or more storage vessels (12) for storing the hydrogen, arranged below a waterline (13) of the water mass for providing buoyancy to the floatable wind turbine, wherein a storage pressure of the hydrogen in the one or more storage vessels is 2-30 bar.

Disclosed herein are systems and methods related to electric power transfer between an aerial vehicle of an airborne wind turbine and a power grid. An example power conversion system may include power converters, a DC bus connecting the power converters to the aerial vehicle, and an AC bus connecting the power converters to the power grid. The power converters may be configured to provide AC/DC power conversion between the aerial vehicle and the power grid. The power conversion system may also include switches operable to either (i) electrically connect a respective power converter to the DC bus or electrically isolate the respective power converter from the DC bus. The power conversion system may also include one or more power supplies that can be connected to the DC bus to provide backup power in the event a power converter or the power grid malfunctions.

A bi-directional contra-rotating circular rail bearing Y-shaped compound blade fluid energy collection multi-unit power generating windmill, the windmill comprising: a windmill remote automatic control system (1); a Y-shaped compound blade (2) from a combining of single blades; a circular rail windmill body (3) bearing the Y-shaped compound blade (2); a circular windmill rail (4) bearing the circular rail windmill body (3) for operation; a circular rail connection cable pulling vehicle (5) running on the circular cable pulling vehicle rail to pull the circular rail windmill using a stay cable (209); a hydraulic energy collection multi-unit power generating system (6) or pneumatic energy collection multi-unit power generating system (7); the Y-shaped compound blade (2) is born by three circles of the circular rail windmill body (3) arranged equidistant thereon; the circular rail windmill body (3) has six circles.