An intentional fluid manipulation apparatus (IFMA) assembly with a first thrust apparatus that imparts a first induced velocity to a local free stream flow during a nominal operation requirement. The first thrust apparatus creates a streamtube. A second thrust apparatus is located in a downstream portion of the streamtube. The second thrust apparatus imparts a second induced velocity to the local free stream flow. The second induced velocity at the location of the second thrust apparatus has a component in a direction opposite to the direction of the first induced velocity at the location of the second thrust apparatus.

A wind-powered generator includes a housing having an inlet, an outlet, and a throat that are coaxial about an axis of symmetry of the housing. A nacelle includes a first rotor mounted on a first end of the nacelle and positioned at least partially within the inlet, the first rotor outputting a first power output, and a second rotor mounted on a second end of the nacelle, the second rotor being positioned at least partially within the outlet and having a diameter less than the first rotor. The second rotor outputting a second power output. The first and second power outputs are combined to provide a combined power output, and a nacelle ratio between outer diameters of the nacelle at the inlet and at the outlet is between about 1.60-1.70, and a housing ratio between inner diameters of the housing at the inlet and at the outlet is about 1.85-1.97.

The present disclosure relates to an apparatus (10) for wind power generation comprising at least one primary wind duct (12); at least one secondary wind duct (14); at least one pressure-balancing and guiding unit (14); at least one primary blade unit (20); at least one booster and generator unit (22); at least one secondary blade unit (24); and at least one extractor (26). Characteristically, a counter-rotating motion is created between the primary blade unit (20), the secondary blade unit (24) and the components of the booster and generator unit (22), which causes an increase in the velocity of the wind flowing through the apparatus (10) and a resultant increase in the impact of the high velocity wind on the blades; further amplifying the self-reinforcing effect occurring at each stage of the apparatus (10).

A multi-stage wind power extractor includes a tunnel and at least two turbines. The tunnel is circular in a cross-section and has a horizontal axis, first and second open ends, and a length that is greater than a diameter of the tunnel. The tunnel diameter progressively increases from the first open end to the second open end. The turbines are arranged in spaced relation within and coaxial with the tunnel. Each includes a rotor having a plurality of radially extending blades, a controller connected with the rotor, and a motor connected with the controller. The controllers independently engage and disengage their respective rotors in accordance with a wind velocity travelling through the tunnel from the first open end to the second. In turn, when a rotor is engaged, the motor provides power to a generator that is connected therewith.

The present invention relates to a wind power generator for street light comprising: a post member installed vertically; a central fixed shaft member installed horizontally on an upper portion of the post member; a first blade member rotatably installed around the central fixed shaft member and including a first blade rotated by wind on one side thereof; a second blade member rotatably installed around the first blade member and including a second blade rotated by wind on one side thereof; a cone member having an inclined shape at a specific angle so that wind smoothly moves toward the first blade member and the second blade member, and a power generation module rotated by the first blade member and the second blade member to generate power. According to the present invention, the first blade member and the second blade member can supply sufficient torque required for the rotation of the power generation module and can increase power generation time by driving the power generation module with the double blades. In addition, it is possible to minimize the installation space and reduce the size of the wind power generator by installing the first rotating shaft and the second rotating shaft in a double layer structure.

A wind-powered generator includes a housing having an inlet, an outlet, and a throat that are coaxial about an axis of symmetry of the housing. A nacelle includes a first rotor mounted on a first end of the nacelle and positioned at least partially within the inlet, the first rotor outputting a first power output, and a second rotor mounted on a second end of the nacelle, the second rotor being positioned at least partially within the outlet and having a diameter less than the first rotor. The second rotor outputting a second power output. The first and second power outputs are combined to provide a combined power output, and a nacelle ratio between outer diameters of the nacelle at the inlet and at the outlet is between about 1.60-1.70, and a housing ratio between inner diameters of the housing at the inlet and at the outlet is about 1.85-1.97.

The device of the present invention converts the kinetic energy of compressed air into electrical energy by setting up (N+1)-level wind turbines with same diameter but different rated power and rated speed in a pipeline and passing the high-speed airflow through the multi-levels of the wind turbine to reduce the airflow speed. The device converts wind energy into electrical energy and mixes atomized water when the compressed air flows through the wind turbines to improve the power generation efficiency. The device is a pipeline power generation device and a dedicated compressed air turbine. The pipeline power generation device can be used by multiple devices in parallel connecting with each other to increase the total power of peak-shaving power. As the result, the cost of the peak shaving power is reduced.

An intentional fluid manipulation apparatus (IFMA) assembly with a first thrust apparatus that imparts a first induced velocity to a local free stream flow during a nominal operation requirement. The first thrust apparatus creates a streamtube. A second thrust apparatus is located in a downstream portion of the streamtube. The second thrust apparatus imparts a second induced velocity to the local free stream flow. The second induced velocity at the location of the second thrust apparatus has a component in a direction opposite to the direction of the first induced velocity at the location of the second thrust apparatus.

A wind turbine can include a first rotating ring and a second rotating ring. A first plurality of airfoils is pivotally secured between an interior rim and an exterior rim of the first rotating ring and disposed at a first angle of attack. A second plurality of airfoils is pivotally secured between an interior rim and an exterior rim of the second rotating ring and disposed at a second angle of attack. A generator is mounted between the first rotating ring and the second rotating ring and generates electricity in response to the first plurality of airfoils capturing the wind with the first angle of attack such that the first rotating ring rotates in a first direction and the second plurality of airfoils captures the wind with the second angle of attack such that the second rotating rings rotate in an opposite direction from the first rotating ring.

The invention is on the one hand a power generating apparatus exploiting wind energy, comprising a body (10), a main rotor unit (12) comprising a front rotating part being fitted with front blades being adjustable at an angle, and a rear rotating part being fitted with rear blades adjustable at an angle, said front rotating part and rear rotating part have rotation axes aligned parallel to each other, preferably being coincident with each other, a blade adjustment unit being adapted for adjusting of the front blades and the rear blades to rotate in opposite directions, a cable (18) enabling kiting of the body (10), a generator unit adapted for generating electric power from rotation of the front rotating part and the rear rotating part, and a wire adapted for conducting electric power generated by the generator unit, and the main rotor unit (12) is arranged in an opening (11) of and coupled to the body (10), and the main rotor unit (12) comprises blades being turnable into a covering position covering at least partly the opening (11). On the other hand, the invention is a method for operating the power generating apparatus.