A fluidic rotor rotary machine has a rotor comprising at least one blade (4) mounted on an arm (2) rotating about a main axis (1) of the rotor, the rotor being held by a support structure (5) in an orientation such that said axis (1) is essentially perpendicular to the fluid flow direction, the blade (4) being pivotally mounted about a rotational axis (3) parallel to the main axis (1), the machine being characterized in that it comprises means for generating a relative rotational movement of the blade (4) relative to the arm (2) at the rotational axis (3), thereby varying the blade angle, said means comprising an eccentric mechanism rotating on said blade rotational axis. Application in particular to propellers and generators operating according to Lipp-type or Voith-Schneider-type kinematics, with possible mode switching.

The apparatus comprises: a cylinder having an opening presenting perpendicular to a flow of air in use such that, in use, air flows through the cylinder; and means for generating power based upon the flow of air through the cylinder.

In a vertical rotor apparatus that rotates in response to a moving fluid, a shaft defines an axis of rotor rotation. Rotor blades are longitudinally aligned in parallel with the shaft and each rotor blade defines an axis of blade rotation. A sensor generates a signal when any of the rotor blades are within rotor azimuthal angles of blade stall regions. A controller generates blade pitch information for the blade stall regions and an actuator, which is mechanically coupled to each of the rotor blades, alters blade pitch about the axis of blade rotation in accordance with the blade pitch information.

The invention provides a vertical axis wind turbine to produce power relative to wind speed resulting in high torque output. During operation, all the blades of the turbine are in a continuous movement of changing their angles from fully open to fully overlap position during each rotation. At the heart of this concept is a frame circumventing the rotor, formed of a pair of top coaxial rings superimposed over bottom coaxial rings defining a central vertical axis distant from the shaft axis, each pair of top and bottom rings are freely movable by being mounted on bushings to the shaft by radially disposed beams and vertically disposed mounting members fixedly connecting the top and bottom rings. The Blade angle relative to incoming wind is controlled by these pair of rings which are controlled by the pair of weathervanes rotating on the central turbine shaft axis.

Disclosed is a power generation device (1), comprising a shaft column (11) and at least two blade units (12-17), wherein the blade units (12-17) are sheathed onto the shaft column (11) and capable of rotating around the shaft column (11), the adjacent blade units rotate in opposite rotational directions, each blade unit (12-17) has a plurality of arm portions (121-171) and a plurality of movable blades (122-172), the arm portions (121-171) extend radially outwardly from the shaft column (11), each of the movable blades is connected to one side of the corresponding arm portion and, after passing through a first radial center line (19) of the shaft column (11), expands gradually, and after being expanded, does not interfere with the adjacent blade unit, the first radial center line (19) is parallel to a fluid flow direction, and each of the movable blades is gradually closed after it rotates through a rotation angle. The power generation device (1) can maximize the use of energy in the fluid so as to improve power generation efficiency.

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.

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 system for generating electric energy from wind or hydraulic energy includes a turbine, and an electric energy generating device to which the turbine is connected through a shaft along a first axis. The turbine includes at least one blade, configured to perform a first rotary movement with respect to the first axis, and a second rotary movement with respect to a second axis, coinciding with the axis of the blade itself. This provides a system with structural features allowing high efficiency, facilitating installation in various environmental contexts, without risk of damage for the respective operational and structural integrity, at the same time. Additionally, the system has an essentially reduced environmental impact, as well as a low noise level so that it can be installed in an urban context or in any case close to built-up areas, i.e. near houses or buildings.

A vertical turbine comprising a blade control mechanism including a sun gear engaging a plurality of planetary gears each coupled to blade assemblies. The sun gear has at least half circumference of its teeth removed, as the turbine receives maximum downstream torque in the circumference with teeth and it leaves blades free to rotate in the circumference without teeth for minimum upstream drag. The turbine converts the rotational blades into parallel movement and unidirectional propulsion with minimum turbulence.

The apparatus comprises: a cylinder having an opening presenting perpendicular to a flow of air in use such that, in use, air flows through the cylinder; and means for generating power based upon the flow of air through the cylinder.