The windmill converts the kinetic energy of a flowing fluid into rotational energy that can be used to power a mechanical load. The turbine incorporates a plurality of plate structures, a plurality of sail/wing structures, and a drive shaft. The plurality of plate structures attach to the plurality of sail/wing structures such that the passage of the flowing fluid through the plurality of sail/wing structures rotates the combined structure. The combined structure formed by the plurality of plate structures and the plurality of sail/wing structures rotates around an axis of rotation. The drive shaft attaches to the combined structure formed by the plurality of plate structures and the plurality of sail/wing structures such that the rotation of the combined structure rotates the drive shaft.

A wind harvesting assembly for a wind turbine, having: a Venturi tube having a hollow interior having a first air pressure; an open top end having a first diameter; an open bottom end having the first diameter; a tube length spanning between the open top end and the open bottom end; and a constricted section located above the bottom end, the constricted section adapted to increase a velocity of air passing through by having a second diameter smaller than the first diameter; a plurality of vertical wind turbine blades arranged around the Venturi tube, an outlet disbursement blade assembly disposed below the bottom open end of the Venturi tube and a port fan positioned coaxially with the Venturi tube.

Invention relates to renewable Wind energy combining drag and lift forces into usable torque, having adjustable blades panels with sub blades. Its unique feature is to convert reverse drag into usable lift and combine the two forces in to one cohesive force. The system comprises output drive rotor arranged on a tower base, with its rotating arms with blade panel assemblies mounted rotatably. Each blade panel assembly comprises an auxiliary rotary shaft having sub-blade panels pivotable at one or more pivot points with primary or secondary control arrangements for blocking and/or allowing wind to pass through the blade panels partially or fully. The system further includes sensors to collect control information, coupled to Main Control Unit (MCU) and secondary control arrangements, configured to provide one or more energy forms.

A turbine, in particular for harvesting energy in flowing air or flowing water, is easily adaptable to different application conditions and facilitating a comparably high degree of efficiency. This is achieved in that the basic shape of the turbine is cylindrical and is provided with blades which are parallel to an axis of the turbine. The blades are pivotally arranged in joints on the outer circumference of at least one turbine wheel. The blades are substantially L-shaped. The longer limb of the blade is curved preferably in a manner corresponding to the radius of the turbine casing, and the shorter limb lies within the surface line of the turbine.

A vertical-axis renewable-power generator is an apparatus that is used to efficiently generate power in various weather conditions using renewable energy sources. The apparatus includes a vertically-oriented foil and a fluid turbine. The foil is designed to generate areas of relative high fluid velocity and low pressure on one side and relative lower fluid velocity and higher pressure on the opposite side. The foil is also self-directing so that the foil can follow the direction of the fluid flow. The fluid turbine is integrated into the foil so that the fluid turbine can be rotated by the high-speed fluid flow. The rotation of the fluid turbine can be used to generate electricity. The apparatus conforms to the Bernoulli's principle that is proven to increase the speed of the fluid flow over the foil, which is used to increase the speed of the fluid flow impacting the fluid turbine.

A reciprocal motion wind energy harvesting device has a first vane carrier assembly and a second vane carrier assembly, which are supported by and rotate about a central shaft. The vane carrier assemblies support pluralities of vanes to receive wind force. The vanes are configured to be rotatable in order to produce opposing and reciprocating motion of the lever arm assemblies. The lever arm assemblies are operatively connected to a generator in order to convert the wind force received by the vanes into energy.

A vertical axis wind turbine rotor with a base having a rotational centre, a top surface, a top surface edge, and a plurality of top plates disposed radially around the rotational centre. The rotational centre defines an axis of rotation substantially orthogonal to the top surface. The top surface extends radially from the rotational centre to the top surface edge. Each of the top plates has a leading edge coupled to the base. Each top plate is passively transitionable between a first position above at a first height, and a second position above the top surface at second height. The rotor may also have a bottom surface with a plurality of bottom plates coupled thereto and disposed radially around the rotational centre. The bottom plates can be passively transitionable between a raised position and lowered position.

A vertical axis windmill comprises three or more frames rotatable in unison about a substantially vertical axis and a plurality of airfoils hingedly affixed to each frame. Each airfoil is able to swing away from its respective frame in a first direction from a closed position to an open position and not able to swing away from its respective frame in a second direction from the closed position.

According to a feature, the present invention comprises: a housing having a power generator provided therein; a rotating body coupled to the housing so as to rotate; rotary support bars coupled to the outer peripheral surface of the rotating body so as to rotate integrally with the rotating body around the housing; resistance plates formed in a plate shape, generating resistance by means of gas or fluid, and having fixing grooves formed to be recessed inwards from one side surface thereof such that the rotary support bars are rotatably inserted therein; and an angle restricting part for rotatably coupling the resistance plates to the rotary support bars such that the range of a rotational angle of the resistance plates is restricted, the resistance plates are in a vertical state so as to generate resistance in a forward direction in which the gas or fluid moves and the resistance plates are in a horizontal state so as to prevent the resistance from being generated in a reverse direction, wherein the rotating body rotates by the resistance power generated by the resistance plates and the power generator generates energy by means of the rotating power of the rotating body which rotates. The present invention as described above can provide the structure of the resistance plates of an energy generation apparatus, the structure in which the rotating body rotates by the resistance power generated by the resistance plates and the power generator can generate energy by means of the rotating power of the rotating body which rotates.

A wind turbine device includes a rotatable seat, and a blade assembly including a rotary shaft having a fulcrum portion rotatably connected to the rotatable seat, and two mounting portions extending oppositely and respectively from two opposite ends of the fulcrum portion. At least two blade units are respectively connected to the mounting portions. Each blade unit includes a plurality of angularly spaced-apart blade modules each including a grid frame and a plurality of blades connected to the grid frame. The grid frame includes at least two airfoil-shaped first rods extending along an axial direction of the rotary shaft and spaced apart from each other along a radial direction of the rotary shaft.