A vane device includes a rotary shaft and a plurality of vane units angularly spaced apart from each other relative to the rotary shaft. Each of the vane units includes a grid frame that has grid spaces, and a plurality of vanes respectively disposed adjacent to the grid spaces. Each vane is swingable between a cover position and an open position. The size of the vanes decreases along a radial direction from a vicinity of the rotary shaft to a distance away from the rotary shaft.

The invention relates to the field of energy, in particular to devices converting wind energy into electricity. The wind energy conversion method into electrical energy consisting in that the wind energy is converted by means of receivers mounted on the casing of moving wind energy conversion modules, moving linearly along the guide belt, into movement energy of wind energy conversion modules and electric energy by means of electrical energy generating device, mounted on the casing. Wherein there is performing continuous control, depending on the external conditions of the total area of all wind energy receivers guided to the guide belt. In particular embodiments, there is performing continuous control, depending on the external conditions of setting angles of the wind energy receivers relative to the wind energy conversion modules, the movement speeds of the wind energy conversion modules, the aerodynamic profile, and the area of each wind energy receiver, for which it is preferable to use wings with a composite aerodynamic profile, including the main profile, and at least one tilt flap. Also the system for the method embodiment is claimed.

A vertical windmill system which provides a vertical axis windmill designed to rotate vertically as opposed to horizontally in order to optimize power-generation. The windmill utilizes kinetic wind energy to its maximum extent in order to create sustainable energy. It ensures the generator is not slowed down as wind speed is reduced so the efficiency of harvesting wind energy is increased. As designed it offers a simplified means for improving the efficiency of windmills.

A method for controlling a wind turbine is disclosed, the wind turbine comprising a set of wind turbine blades (1), each wind turbine blade (1) being provided with at least one air deflector (2) being movable between an activated position in which it protrudes from a surface of the wind turbine blade (1) and a de-activated position. The occurrence of an event causing a change in operational conditions is registered, and a new operating state for the wind turbine is determined, the new operating state meeting requirements of the changed operational conditions. The air deflectors (2) of the wind turbine blades (1) and pitch angles of the wind turbines blades (1) are controlled in order to reach the new operating state for the wind turbine, and in such a manner that the control of the pitch angles of the wind turbine blades (1) is performed while taking information regarding the control of the air deflectors (2) into account.

This blade is a new Frame based design that produces more Energy from the wind then its Fiberglass equivalent in the same size and scale of production. Built to be modular in 40 ft sections with easy airfoil replacement this blade solves major Transportation and costly Maintenance issues, at rd the weight, when compared to conventional blades used in the industry today.

An upwind wind turbine includes: a hub provided so as to be rotatable around a rotation axis; a plurality of blades configured to rotate together with the hub; a tilting mechanism configured to couple the hub and the blades such that the blades are tiltable relative to a rotational plane around the rotation axis; a driving device configured to drive the tilting mechanism to switch between a standing state where the blades stand and a tilted state where the blades are tilted; and a fixing/supporting mechanism provided independently from the tilting mechanism and the driving device and configured to be switched between a locked state where the blades in the standing state are prevented from tilting and an unlocked state where the blades are allowed to tilt to become the tilted state.

A wind operated electrical power generating system integrating a wind powered turbine with an electric power generator. The generator is capable of outputting a power level that is greater than a power level obtained by the turbine when the system is operating at an operational rotational speed. The power output is optimized by increasing a load upon the generator. The optimization is based upon the rotational speed of the elements of the system. The system adjusts the load applied to the generator as the system meets each of a plurality of predetermined rotational speeds. The load adjustment can be provided by manual or automated intervention. The system can integrated the generator directly within the turbine or remotely. In a remote configuration, a hydraulic pump obtains power from the turbine and transfers the power by flow of hydraulic fluid to a hydraulic motor. The hydraulic motor drives the generator.

A rotor including blades rotating around a rotation axis (X), each blade being configured to transmit to the rotation axis, during a revolution of the rotor around the rotation axis, under the effect of the flow of a fluid, alternately a driving torque that rotates the rotor, and a resistant torque tending to go against the rotation of the rotor, each blade including in a region of an outer longitudinal edge of the blade, a flexible part configured to retract towards the inside of the rotor, when the blade transmits the resistant torque to the rotation axis of the rotor, and to switch to a position extended towards the outside of the rotor, during the rotor half-revolution following a maximum retraction position, when the blade transmits the driving torque to the rotation axis of the rotor, the flexible part being driven only under the effect of the flow of the fluid.

A wind energy generation turbine is built to take advantage of high winds in mountain passes and other areas of extreme wind velocity. A windmill section is raised high by support structures. Electricity generators are kept in the base of the windmill to reduce elevated weight. A nozzle or shroud channels wind into a narrow raceway to take advantage of the Venturi effect. Windmill blade tips housed within a circular raceway are strengthened by blade tip connectors and blade spar struts against high wind forces. Windmill blade angle and windmill wind facing are dynamically altered by computerized motors for maximum efficiency. Windmill blade angle and/or generator load maintain ratio of windmill blade tip speed to wind speed for efficiency. Turbine speed translation gears are able to decouple windmill from 60 Hz cycle or use water pumps and gravity to store energy at peak generation times.

A camber changing wing for a vertical axis wind turbine includes a main body, a pivoting slat, a first beam member, and a second beam member. The main body has front, rear, top and bottom portions. The pivoting slat is disposed adjacent to the front portion. The pivoting slat has a leading edge, and a top and bottom sides. Each of the beam members has a front end, a rear end, and a pivot point. The front end of the first beam member is coupled to the top side of the pivoting slat. The front end of the second beam member is coupled to the bottom side of the pivoting slat. The first beam member is rotatably attached to the top portion of the main body at the pivot point. The second beam member is rotatably attached to the bottom portion of the main body at the pivot point.