Wind Turbine Sweep Area Enhancement

Variable wind power blade design for wind turbines that allows efficient power generation over a wider range of wind speeds. The blade has an adjustable auxiliary blade mechanism connected to the main blade. A driving device rotates the auxiliary blade mechanism to change the angle and force of the main blade. A telescopic mechanism extends the auxiliary blade to alter the overall blade area. This enables the main blade to adapt its force and size for optimal operation in varying wind conditions.

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A wind turbine blade with movable sections that can expand and contract to adapt the blade area to wind speed. The blade has retractable sections that can extend or retract based on wind speed measured by an anemometer. When wind is low, the sections retract to reduce blade area and maintain power. When wind is high, the sections extend to increase blade area. This allows the blade to dynamically adjust shape and area to match wind conditions, improving power stability.

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Device to increase power and efficiency of wind turbine blades by balancing forces and expanding the power capture area. The device has a rotating shaft connecting the blade tip to the pitch seat. This allows real-time adjustment of blade angle, speed, and force balance to reduce vibrations and rotational resistance. The inner blades can also be arranged to expand the wind-receiving area.

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Crossflow axes rotary mechanical devices with dynamic increased swept area. The devices extract more energy from fluids like wind and water compared to traditional crossflow turbines. The devices have two or more coaxial rotors that rotate in sync using a synchronizing mechanism. Each rotor has blades attached via arms. The blades are designed to avoid collision while maximizing the swept area between the rotors. This allows more fluid to be processed and energy extracted compared to conventional crossflow turbines.

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A wind turbine blade with deployable air deflectors to quickly counteract sudden increases in wind gusts. When sensors detect a load or wind gust magnitude or angle change, the air deflectors extend from the blade surface. The sensors trigger the deflectors to extend, increasing drag and decreasing lift to stabilize blade loads. They retract during normal conditions. The deflectors can be located at various positions on the blade and deployed to varying heights.

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Determining the optimal configuration of a wind turbine for a specific location to maximize energy production and lifespan involves analyzing wind flow characteristics at the location along with environmental conditions to select the ideal set of physical and control parameters for the turbine. The process uses a database of parameter combinations and applies a function to determine performance and fatigue estimates for each combination based on the location data. The combination with the best performance and fatigue values is then selected as the optimal configuration for that location.

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Vertical axis wind turbine with improved blade design for increased performance and an illuminated decorative ornament that can be powered by the turbine. The turbine blades have a curved shape with a cupped leading section and tapered airfoil section. This allows the combined drag/lift operation needed for efficient VAWT performance. The cupped section is joined to the airfoil section with decreasing radius and chord length towards the blade ends. This reduces turbulence and noise at the tips.

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A floating offshore wind power system that maximizes wind power generation efficiency by using variable blades with adjustable angles. The blades are attached to a rotor on a floating wind turbine. By adjusting the blade angles, the rotor speed can be optimized to capture the most power from the wind. This allows longer blades with greater swept area for more power generation compared to fixed blade designs, while minimizing weight compared to traditional towers. The floating turbine can also rotate into the wind direction for optimal positioning.

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Wind turbine with lightweight, adjustable blades that increase efficiency in low winds and protect the turbine in high winds. The blades have triangular airfoil shapes with curved leading edges, flat trailing edges, and detachable trailing edge sections. They can fold/unfold and slide telescopically to change surface area and sweep. The blades are connected to a hub with a gap between them. The cupped sail-like blade shape captures wind, while detachable sections allow blades to release in high winds to avoid damage. Sensors automatically adjust blade shape and sweep area based on wind conditions.

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Active power control for wind turbines that allows fast and effective adjustment of turbine power output in high wind speeds. The control device uses a mechanism to change the swept area of the wind turbine blades in real time to stabilize power. The mechanism involves a push-pull rod and servo motor that can push the blade supports inward to reduce the blade span and windward area. This allows quick and precise power adjustment compared to methods like blade pitch or stall control.

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A wind generator system with lightweight, high efficiency, adjustable blades that can change their surface area and length to increase efficiency in low wind conditions and protect the generator in high winds. The blades are triangular with a curved outer skin attached to a lightweight inner frame. Linear actuators fold/unfold the outer skin to change surface area, and the blades slide along telescopic masts to change length. Sensors automatically control the adjustments based on wind conditions. The blades also have features like auto-release trailing edges and simultaneous release mechanisms to prevent damage in high gusts.

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Wind turbine blade with continuously adjustable area for improved wind power generation efficiency. The blade has a sliding wind shield that can be moved along the blade to change its cross-sectional area. A sensor measures wind speed, which is analyzed by a control system. The shield position is adjusted based on the wind speed to optimize the blade area for power generation at that wind speed. This allows the blade to match the wind speed range for maximum efficiency instead of having discrete step changes.

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Wind turbine with retractable blades to reduce wind loads and prevent damage in high winds. The turbine has multiple blades that can rotate independently around the hub. In strong winds, the blades can be turned downward and overlapped to significantly reduce the windward area and wind load on the blades. This prevents issues like blade breakage and turbine collapse in extreme winds.

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Low noise wind turbine with adjustable blade tips to reduce tip vortex noise. The blade has a fixed body and a detachable winglet connected by a motor. A central control system receives wind speed and noise signals. It calculates the winglet angle to weaken tip shock waves at high speeds. At low speeds, the winglet retracts for increased blade sweep. A motor rotates the winglet around the blade tip to achieve this adjustment.

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A wind turbine that can actively adjust the elevation angle of the wind rotor to optimize power generation in variable wind conditions. The turbine has a cabin with a device to change the angle between the rotor axis and horizontal plane. Sensors measure vertical wind components. When vertical winds are high, the rotor angle is adjusted to align with the incoming flow direction. This maximizes the swept area of the blades and captures more power compared to a fixed rotor angle.

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A wind turbine system that captures wind energy along the ridge of a gabled roof building. The system is housed in an enclosure that channels the airflow to avoid the stagnation point at the roof peak. This allows the turbine to benefit from the increased wind speed deflected to the ridge by the sloped roof. The enclosed turbine is visually appealing, bird-friendly, and prevents snow accumulation. It provides 5-8 times the energy of an exposed turbine.

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A wind turbine design that can actively adjust the pitch of the wind wheel to optimize power generation in areas with vertical wind components. The turbine has a nacelle with a mechanism to change the angle between the wind wheel axis and horizontal plane. Sensors measure the vertical wind component. By adjusting the pitch, the turbine can align the wind wheel with the wind direction even when it has a significant vertical component. This maximizes the blade sweep area and power output.

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Active flow control system for wind turbine blades to optimize energy production while mitigating loads and noise. The system uses an active flow control device on each blade that can be activated in combination with blade pitch and generator speed to maintain rated power. It enables reducing blade chord length in some sections for increased sweep area without increasing loads. The active flow control is activated before rated speed, then ramped up. At rated power, it's decreased. This allows leveraging flow control to enhance lift without excessive loads. The system balances energy gain from flow control vs loads/noise risks. It combines active flow control with blade pitch and generator speed control to optimize energy, loads, and noise.

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Floating vertical axis wind turbine (VAWT) for offshore power generation that overcomes the limitations of conventional horizontal axis wind turbines (HAWTs). The VAWT has a 360° rotor with aerodynamic or impulse-based blades supported by fluidic or magnetic bearings. It leverages bearing advances to eliminate the gearbox and enable large-scale VAWTs. The rotor is designed to generate 60 Hz power without conversion directly. The floating platform has fins for stability and reduces drag using techniques like air bubbles and textured hulls.

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An efficient wind wheel design with a unique blade arrangement to capture more wind energy. The wind wheel has a central rotating shaft surrounded by a circular bracket. Inside the bracket is a rotating sleeve connected to the shaft. The blades are mounted inside the bracket in a circular array around the sleeve. The blade tips have pitching devices to adjust the blade angle. The blade roots connect to the sleeve, while the blade tips twist 0-90 degrees helically. This configuration increases the swept area of the blades compared to traditional three-bladed designs. The blades also have thin carbon fiber construction. The pitching devices allow optimal blade angles for different wind conditions.

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