Wind Patents for Sale or License

Venturi Wind Turbine

The venturi wind turbine has been developed for high torque low rotor speed applications such as water pumping, water desalination, air compression and pond aeration. The twin rotor configuration creates an area of low pressure between the rotors. This low pressure area reduces the drag of the rotors and allows more power to be extracted from the wind. As air accelerates between the rotors the air pressure drops. This pressure differential is used to create lift on the rotor airfoils as they
...

Wind-Driven Power Plant with a Wind Turbine with Removable Axles

Turbine design created for a large coefficient of power. Additionally used for this thrust force that acts on the blades. Wind-driven power plant with wind wheels with changing axles has tower with generator, reducer turn mechanism, mast, drives for correction of angle of attack of blades, wind wheel, blades installed with possibility of rotation at axles of wind wheel, output shaft and mechanical gearings connected to it, with general gear ratio 1, mechanism with stepping displacement that is k
...

Method of Torque Conversion with Conservation of Energy (No Power Loss)

This machine allows for a truly torque conversion with smoothly changed ratio while at work. It complies with the following formula: any number to any number including negative numbers. Because of this properties, it allows to eliminate need for a transmission. It can be used in any kind of vehicles like: cars, trucks, locomotives, ships and wind mills. Please see attached file.
...

Power generation by harnessing high altitude wind

About 9 years ago I learned that the wind at high altitude (Airborne Wind) is more continuous and much more stronger than near-ground wind. Since then, I focused my efforts to find a way to generate electric power by harnessing this wind, until I was able finally to develop this method which achieve this aim practically and economically. I think that this technique may be as a revolution in power generation by the alternative energy due to the unique characteristics which distinguish this metho
...

Vertical Axis Wind Turbine

A vertical axis wind turbine is disclosed, including an axle and a plurality of blades circumferentially spaced about the axle and coupled to the axle. Each blade can include an outer surface and an inner surface, the outer surface and inner surface meeting at a leading edge and a trailing edge. Each blade can include a leading portion extending from the leading edge along the outer surface and the inner surface, the leading portion having, in longitudinal cross-section, an airfoil shape. Each b
...

Wind-powered Engine

The invention refers to wind-power engineering and may be used for the generation of electrical energy or in mechanical works. The wind-powered engine consists of a vertical shaft installed in the bearing assembly and connected with the transmission of mechanical energy consumers. The radial blade of the wind-powered engine consists of two symmetrical, oppositely oriented channelled consoles. The consoles are joined to a connecting pipe which is placed on the vertical shaft. The pipe ensures the
...

Variable hydraulic transmission for wind turbines

Electricity is generated from wind or water turbines 15, 16 using a hydraulic transmission between the turbines and the shared generator 130. The transmission is controllable so that the blade 40 tip speed ratio (TSR) of the turbine 15, 16 is infinitely adjustable independently of the generator 130 speed, so turbine efficiency can be improved. Adjustment may be achieved by an adjustable pump 50 or motor 120 e.g. using a swash plate. The system could alternatively control the pressure or flow of
...

A Wind Turbine Blade with Angled Girders

The present invention relates to a reinforced blade for a wind turbine, particularly to a blade having a new arrangement of two or more girders in the blade, wherein each of the girders is connected to the upper part and the lower part of the shell and forms an angle with another girder thereby strengthening the shell against transverse shear distortion.
...

A Reinforced Wind Turbine Blade

The present invention relates to a reinforced blade for a wind turbine, particularly to a blade having at least one elongated reinforcing member connected inside the shell for increasing the strength of the blade, each of the at least one elongated reinforcing member having a first end and a second end and extending in a longitudinal direction between the first end and the second end and wherein the first end is connected to the upper part of the shell and the second end is connected to the lowe
...

AirSpeed Wind Tunnel Data Analysis Suite

The highest fidelity and lowest risk method of estimating an airframe aerodynamic properties is via a well-structured wind tunnel test program. Unfortunately, this method of obtaining aerodynamic data is also very expensive. APL's AirSpeed modeling and simulation software allows a user to plan a wind tunnel test program very precisely using estimated run times, model change times, and tunnel cost factors. This allows the run plan to be more precisely tailored to the amount of wind tunnel test ti
...

Variable-Speed Wind Power System with Improved Energy Capture via Multilevel Conversion

A system and method for efficiently capturing electrical energy from a variable-speed generator are disclosed. The system includes a matrix converter using full-bridge, multilevel switch cells, in which semiconductor devices are clamped to a known constant DC voltage of a capacitor. The multilevel matrix converter is capable of generating multilevel voltage wave waveform of arbitrary magnitude and frequencies. The matrix converter can be controlled by using space vector modulation. U.S. Paten
...

Variable Speed Wind Turbine Generator with Zero Sequence Filter

A variable speed wind turbine generator system to convert mechanical power into electrical power or energy and to recover the electrical power or energy in the form of three phase alternating current and return the power or energy to a utility or other load with single phase sinusoidal waveform at sixty (60) hertz and unity power factor includes an excitation controller for generating three phase commanded current, a generator, and a zero sequence filter. Each commanded current signal includes t
...

Root Region Airfoil for Wind Turbine

A thick airfoil for the root region of the blade of a wind turbine. The airfoil has a thickness in a range from 24%-26% and a Reynolds number in a range from 1,000,000 to 1,800,000. The airfoil has a maximum lift coefficient of 1.4-1.6 that has minimum sensitivity to roughness effects. U.S. Patent 5,417,548
...

Cooling-tower Fan Airfoils

A family of airfoils for a blade of a cooling-tower fan, is provided wherein the blade has a root region and a tip region, the family of airfoils comprises an airfoil (30) in the root region of the blade having a Reynolds number of 500,000, and an airfoil (20) in the tip region of the blade having a Reynolds number of 1,000,000, and wherein each airfoil is characterized by a maximum lift coefficient that is largely insensitive to roughness effects. U.S. Patent 6,899,524
...

Airfoils for Wind Turbine

Airfoils for the tip and mid-span regions of a wind turbine blade have upper surface and lower surface shapes and contours between a leading edge and a trailing edge that minimize roughness effects of the airfoil and provide maximum lift coefficients that are largely insensitive to roughness effects. The airfoil in one embodiment is shaped and contoured to have a thickness in a range of about fourteen to seventeen percent, a Reynolds number in a range of about 1,500,000 to 2,000,000, and a maxim
...

Airfoils for Wind Turbine

Airfoils for the blade of a wind turbine wherein each airfoil is characterized by a thickness in a range from 16%-24% and a maximum lift coefficient designed to be largely insensitive to roughness effects. The airfoils include a family of airfoils for a blade 15 to 25 meters in length, a family of airfoils for a blade 1 to 5 meters in length, and a family of airfoils for a blade 5 to 10 meters in length. U.S. Patent 5,562,420
...

Highly Efficient Fuel Cell

The Invention The new type of fuel cell utilizes a unique nano-porous proton conducting membrane and improved fuel cell components including improved anodic and cathodic catalysts, membrane electrode assembly and bipolar plates with flow fields for both solution and gas. A hydrogen/bromine cell was built with a record high power density of 1.3 W/cm2 (vs less than 0.25 W/cm2 for conventional H/Br fuel cells. These fuel cells are an enabling technology for efficient storage of inconstant engery
...

A New Controller for Wind Farms Giving Improved Network Stability

BACKGROUND The increasingly wide spread use of wind generation on power networks imposes a greater requirement for wind-farms to contribute to security of network operation in the same way as conventional generating stations based on synchronous generators. DFIG controllers to date have concentrated mainly on the provision of an adjustable operating speed to maximise turbine power output, the maintenance of the required generator terminal voltage or power factor and the control of the generator
...

Variable Speed Wind Turbine Generator with Zero Sequence Filter

A variable speed wind turbine generator system to convert mechanical power into electrical power or energy and to recover the electrical power or energy in the form of three phase alternating current and return the power or energy to a utility or other load with single phase sinusoidal waveform at sixty (60) hertz and unity power factor includes an excitation controller for generating three phase commanded current, a generator, and a zero sequence filter. Each commanded current signal includes t
...

Variable-Speed Wind Power System with Improved Energy Capture via Multilevel Conversion

A system and method for efficiently capturing electrical energy from a variable-speed generator are disclosed. The system includes a matrix converter using full-bridge, multilevel switch cells, in which semiconductor devices are clamped to a known constant DC voltage of a capacitor. The multilevel matrix converter is capable of generating multilevel voltage wave waveform of arbitrary magnitude and frequencies. The matrix converter can be controlled by using space vector modulation.
...

Root Region Airfoil for Wind Turbine

A thick airfoil for the root region of the blade of a wind turbine. The airfoil has a thickness in a range from 24%-26% and a Reynolds number in a range from 1,000,000 to 1,800,000. The airfoil has a maximum lift coefficient of 1.4-1.6 that has minimum sensitivity to roughness effects.
...

Cooling-tower Fan Airfoils

A family of airfoils for a blade of a cooling-tower fan, is provided wherein the blade has a root region and a tip region, the family of airfoils comprises an airfoil (30) in the root region of the blade having a Reynolds number of 500,000, and an airfoil (20) in the tip region of the blade having a Reynolds number of 1,000,000, and wherein each airfoil is characterized by a maximum lift coefficient that is largely insensitive to roughness effects.
...

Airfoils for Wind Turbine

Airfoils for the blade of a wind turbine wherein each airfoil is characterized by a thickness in a range from 16%-24% and a maximum lift coefficient designed to be largely insensitive to roughness effects. The airfoils include a family of airfoils for a blade 15 to 25 meters in length, a family of airfoils for a blade 1 to 5 meters in length, and a family of airfoils for a blade 5 to 10 meters in length.
...

Airfoils for Wind Turbine

Airfoils for the tip and mid-span regions of a wind turbine blade have upper surface and lower surface shapes and contours between a leading edge and a trailing edge that minimize roughness effects of the airfoil and provide maximum lift coefficients that are largely insensitive to roughness effects. The airfoil in one embodiment is shaped and contoured to have a thickness in a range of about fourteen to seventeen percent, a Reynolds number in a range of about 1,500,000 to 2,000,000, and a maxim
...

Variable Speed Wind Turbine Generator with Zero Sequence Filter

A variable speed wind turbine generator system to convert mechanical power into electrical power or energy and to recover the electrical power or energy in the form of three phase alternating current and return the power or energy to a utility or other load with single phase sinusoidal waveform at sixty (60) hertz and unity power factor includes an excitation controller for generating three phase commanded current, a generator, and a zero sequence filter. Each commanded current signal includes t
...

Variable-Speed Wind Power System with Improved Energy Capture via Multilevel Conversion

A system and method for efficiently capturing electrical energy from a variable-speed generator are disclosed. The system includes a matrix converter using full-bridge, multilevel switch cells, in which semiconductor devices are clamped to a known constant DC voltage of a capacitor. The multilevel matrix converter is capable of generating multilevel voltage wave waveform of arbitrary magnitude and frequencies. The matrix converter can be controlled by using space vector modulation. Inventors
...

Root Region Airfoil for Wind Turbine

A thick airfoil for the root region of the blade of a wind turbine. The airfoil has a thickness in a range from 24%-26% and a Reynolds number in a range from 1,000,000 to 1,800,000. The airfoil has a maximum lift coefficient of 1.4-1.6 that has minimum sensitivity to roughness effects.
...

Cooling-tower Fan Airfoils

A family of airfoils for a blade of a cooling-tower fan, is provided wherein the blade has a root region and a tip region, the family of airfoils comprises an airfoil (30) in the root region of the blade having a Reynolds number of 500,000, and an airfoil (20) in the tip region of the blade having a Reynolds number of 1,000,000, and wherein each airfoil is characterized by a maximum lift coefficient that is largely insensitive to roughness effects.
...

Airfoils for Wind Turbine

Airfoils for the tip and mid-span regions of a wind turbine blade have upper surface and lower surface shapes and contours between a leading edge and a trailing edge that minimize roughness effects of the airfoil and provide maximum lift coefficients that are largely insensitive to roughness effects. The airfoil in one embodiment is shaped and contoured to have a thickness in a range of about fourteen to seventeen percent, a Reynolds number in a range of about 1,500,000 to 2,000,000, and a maxim
...

Airfoils for Wind Turbine

Airfoils for the blade of a wind turbine wherein each airfoil is characterized by a thickness in a range from 16%-24% and a maximum lift coefficient designed to be largely insensitive to roughness effects. The airfoils include a family of airfoils for a blade 15 to 25 meters in length, a family of airfoils for a blade 1 to 5 meters in length, and a family of airfoils for a blade 5 to 10 meters in length.
...

Notify me of New Entries on this Page

You can receive an email whenever a new patent is added to this category. You can unsubscribe at any time.