A mechanical device system that draws power from the wind by means of near-vertical blades pivotally mounted on a platform rotor that is flush with the ground and rotatable about a vertical axis. Wind forces are generated on the blades causing the platform rotor to turn thereby generating shaft power. An electrical generator coupled to the platform rotor converts the shaft power to electrical power, which is then distributed through conventional transmission means. The power output is maximized for a given wind speed by cyclically controlling each blade rotation to intercept the relative wind vector so as to create maximum blade forces over the periodic cycle. The blade axes are canted to match the rotational speed to the normal speed gradient of the prevailing wind to maintain constant (π*h*D)/Vw at all levels. The turbine is mounted atop an earth mound tailored to accelerate the flow near the ground to produce an optimum wind speed profile. The rotor speed is controlled to match the wind speed within narrow limits for maximum efficiency and power output.

A rotary converter of wind energy with a vertical axis of rotation includes a rotor with a vertical axis of rotation 4, which has two or more shovels 6 connected to a central body 5 and/or to each other. The shovels called “working” shovels have wind-permeable structure 2. On one side of the shovels is formed a working surface. It is formed on same side of all working shovels by a flag or flags 1 of which the structure limits the capability to take the direction of the air flow, meeting with this side of the shovels. By this surface, the shovels catch the wind energy and convert it to a rotational motion of the rotor. The shovel's load and the rotor speed can be regulated.

The Vertical Tilting Blade Turbine Windmill device is for capturing kinetic energy from the wind and is comprised of a vertical shaft having a central hub connectively attached, the central hub having a plurality of wind capture arms comprising a rotating wind capture blade having a capture surface and a slicing edge that are rotated by a rotating gear and drive gear combination connectively attached to said wind capture blades enabling a rotation of said wind capture blades wherein the wind capture blades are rotated between a blade-mode to capture the wind and a knife-mode to pass with less drag resistance through the air/wind thereby enabling an increase in the ability to capture more of the energy available in an on-coming wind stream.

[Problem] To achieve a sail movement comprising rotation while revolving, using a relatively simple structure that does not easily break. [Solution] A sail device 1 includes a supporting body 2, a sail body 4, a guide track comprising recessed portions 5a, 5b, and engaging portions 8a, 8b. Rotational energy is output from or input to a rotating body 2c forming part of the supporting body 2. The sail body 4 is attached to the supporting body 2 with freedom to rotate, and revolves around an axis of the supporting body 2. The sail body 4 converts fluid energy into rotational energy or converts rotational energy into fluid energy on the basis of the motion of the sail body 4 which is in contact with a fluid. In the guide track, the two recessed portions 5a, 5b are continuous with one another, forming an endless track which defines an angle of rotation of the sail body 4 during the process of revolving. The engaging portions 8a, 8b engage the sail body 4 with the guide track, and cause the sail body 4 to be displaced along the guide track.

The present invention relates to a vertical wind turbine (1) with a plurality of vertical blades (7), which are each supported such that they are motor-driven pivotable around a respective blade rotation axis (C.sub.7) independently of one another, and are rotatable on a common circular path (K) around a vertical rotor rotation axis (C.sub.2), and to a method for operating the vertical wind turbine (1), wherein angular positions of vertical blades (7) of the vertical wind turbine (1), which are each supported such that they are rotatable around a respective vertical rotor rotation axis (C.sub.2) and are motor-driven pivotable around a respective blade rotation axis (C.sub.7) independently of one another, are being predetermined. According to the invention, the vertical wind turbine (1) is operated in a particularly efficient and material-protecting way in that the angular positions of the blades (7) are each predetermined by means of at least one pitch motor (27) at least partially supporting the respective blade (7).

A novel universal propeller has a gearwheel arranged on each rotor blade that is directly operatively connected to a reference gearwheel of a timing gear. The timing gear is operatively connected to a hub gear. The hub gear senses and processes an angular velocity ω.sub.n of a rotation of the hub. The reference gearwheel and the gearwheels of the rotor blades of the timing gear are configured that the ratio of an angular velocity ω.sub.r of the reference gearwheel to the angular velocity ω.sub.n of the rotational movement of the hub is as follows: ω.sub.r/ω.sub.n=1±(½)*(S.sub.rot/S.sub.r), where S.sub.rot is a size of the gearwheels and S.sub.r is a size of the reference gearwheel. The present invention is particularly suitable for use in a wind power installation, hydropower installation or an engine of a ship or an aircraft.

A vertical wind turbine with a plurality of vertical blades, which are each fastened to a respective vertical blade axis, such that they are pivotable around a respective blade rotation axis (C.sub.7) independently of one another, and are supported rotatable on a common circular path (K) around a vertical rotor rotation axis (C.sub.2), and a method for operating the vertical wind turbine, wherein pitch angles (β) of vertical blades of the vertical wind turbine, which are driven around a respective vertical blade axis, are predetermined. The pitch angle (β), at least in a partial load mode of the vertical wind turbine (1), is controlled such that the blades (7) rotate with an essentially constant tip speed ratio (λ).

Sail movement is achieved having rotation while revolving, using a simple structure that does not easily break. A sail device includes a supporting body, a sail body, a guide track comprising recessed portions, and engaging portions. Rotational energy is output from or input to a rotating body forming part of the supporting body. The sail body is attached to the supporting body which freely rotates, and revolves around an axis of the supporting body. The sail body converts fluid energy into rotational energy or converts rotational energy into fluid energy on the basis of the motion of the sail body which contacts a fluid. In the guide track, two recessed portions are continuous with one another, and form an endless track which defines an angle of rotation of the sail body during the process of revolving. The engaging portions engage the sail body with the guide track, and displace the sail body along the guide track.

A vertical wind turbine that includes a plurality of vertical vanes which is secured to a vertical vane axis so as to be rotatable independently of one another about a respective vane rotational axis and which are rotatably mounted about a vertical rotor rotational axis on a common circular path. A method for operating a vertical wind turbine, in which method pitch angles of vertical wind turbine vanes driven about a respective vertical vane axis are specified. The vertical wind turbine is operated in a particularly efficient and material-preserving manner by control of the pitch angles, at least in a partial load mode of the vertical wind turbine, such that the vanes rotate with a substantially constant tip-speed ratio.

Disclosed is a system for deploying, stationing, and translocating buoyant wind- and wave-energy converters and/or other buoyant structures or devices, as well as farms of same. Also disclosed is a novel apparatus and/or machine comprising a farm of buoyant wave energy converters deployed by said method and/or configured to be deployed by said method.