A novel lightweight high efficiency wind generator with low noise and low vibrational levels comprising a vertical mast with a rotation element mounted at the top of the mast, with a frame attached to the rotation element with its bottom, such that the rotation element provides axial rotation of the frame in the range from 0° to 360°, is disclosed. The frame comprises a three-dimensional truss frame construction with traverses, to which at least one rigid closed elliptical base is attached. The at least one elliptical base carries a guide rail with grooves, the guide rail comprises at least one pair of rollers in the grooves which can rotate and roll in the grooves along the entire closed circuit of the elliptical base. Along the entire contour of the elliptical base blades are radially fixed and arranged in one plane using carriages.

A novel lightweight high efficiency wind generator with low noise and low vibrational levels comprising a vertical mast with a rotation element mounted at the top of the mast, with a frame attached to the rotation element with its bottom, such that the rotation element provides axial rotation of the frame in the range from 0° to 360°, is disclosed. The frame comprises a three-dimensional truss frame construction with traverses, to which at least one rigid closed elliptical base is attached. The at least one elliptical base carries a guide rail with grooves, the guide rail comprises at least one pair of rollers in the grooves which can rotate and roll in the grooves along the entire closed circuit of the elliptical base. Along the entire contour of the elliptical base blades are radially fixed and arranged in one plane using carriages.

Provided is a wind power system. The wind power system may comprise: a rail for providing a movement path in a horizontal direction; a moving body configured to slide and move along the movement path of the rail; a plurality of blades installed on the moving body and providing power for the movement of the moving body on the basis of energy from the wind; and a nacelle having a generator for generating power by rotating in conjunction with the movement of at least one of the moving body and the blades.

Carts with aerofoils move around an elongated, looped track under the force of the wind. Carts are connected to each other in a train on the windward side of the track and collectively rotate gear wheels at the side of the track, via racks mounted on the carts that engage with the gears. The gears ultimately power an electrical generator mounted in the base of the system. The system has multiple tracks stacked one above the other and mounted on a rotatable structure that can be turned to optimize wind energy harvesting. The angle of the aerofoils is adjusted at different locations of the cart on the track when desired. Intervening buffer carts without aerofoils are used to space the carts with aerofoils. The speed of the carts is a fraction of the wind speed.

Carts with aerofoils move around an elongated, looped track under the force of the wind. Carts are connected to each other in a train on the windward side of the track and collectively rotate gear wheels at the side of the track, via racks mounted on the carts that engage with the gears. The gears ultimately power an electrical generator mounted in the base of the system. The system has multiple tracks stacked one above the other and mounted on a rotatable structure that can be turned to optimize wind energy harvesting. The angle of the aerofoils is adjusted at different locations of the cart on the track when desired. Intervening buffer carts without aerofoils are used to space the carts with aerofoils. The speed of the carts is a fraction of the wind speed.

In some embodiments, an apparatus includes at least two towers arranged in each of a first direction and a second direction, each tower having a first end above a second end in a third direction. In some embodiments, the apparatus includes a bridling system connecting each of the towers to other towers, the bridling system connected to eachtower above the second end of the respective tower and balancing forces on each tower in the first and second directions.

In some embodiments, an apparatus includes at least two towers arranged in each of a first direction and a second direction, each tower having a first end above a second end in a third direction. In some embodiments, the apparatus includes a bridling system connecting each of the towers to other towers, the bridling system connected to eachtower above the second end of the respective tower and balancing forces on each tower in the first and second directions.

A device and method of acquiring mechanical energy by using a wind power generator employing sails is described. A sail is mounted on a towing carriage that is used for the rotation of a propulsion wheel of the mechanical gear is added. The towing carriage is connected to a strand and the strand transfers the force originated by the sail to the propulsion wheel of the power plant. The sail has the ability of adjustment of its angle position to the direction of the wind, the total exploitation cycle of the wind power generator employing sails consists of the working part during which the sail is moving along the direction of wind.

[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.

[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.