Power Output Optimization in Wind Turbines

Coordinated operation of clusters of wind turbines to improve performance and reliability. The system involves synchronizing turbine operation, braking, and power generation to optimize the cluster as a whole. It involves coordinating turbine loading, blade phase, and braking to balance power output, prevent damage, and conform with grid requirements. The cluster is treated as a single system with coordinated control to leverage benefits of clustering like aerodynamic coupling.

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Vertical axis wind turbine with blades that precisely and simultaneously adjust their angle of attack throughout a full rotation based on the relative wind direction. This provides maximum lift at all times for optimal power generation compared to fixed blade angles. The blade angle adjustment mechanism uses a wind vane to observe wind direction and adjusts each blade's angle accordingly. This improves efficiency compared to horizontal axis turbines that can't change blade angles during rotation.

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Rotary blade design for wind turbines and other fluid flow devices to improve rotation efficiency. The blade has a front curved surface that protrudes forward in rotation direction and a rear curved surface that is concave and has less depth. The rear surface connects to the front surface at an inner end. A recess is formed on the front surface. The recess has a stepped inner surface facing rearward and connects to the outer end. The recess allows tailwind to flow around and generate lift force. The stepped inner surface has a smaller slope angle than the outer surface. This design enables higher rotation speed compared to conventional blades using only drag force. The blades can be arranged in stages with an angle difference for better overall efficiency.

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Optimizing wind turbine power generation by allowing the rotor speed to exceed the rated speed during mild wind conditions when the loading is below a threshold. This enables closer following of the ideal power/speed trajectory for higher power output compared to constant speed operation. The method involves checking if loading is low when the rotor is near rated speed, and increasing rotor speed if so. This avoids excessive loading during calm periods and allows more power extraction. The speed boost is determined based on the wind turbine's power/speed curve.

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A generator for clean, renewable, and sustainable power generation that uses a flywheel to stabilize power output from intermittent renewable sources like wind turbines. The generator has a machine device with a drive shaft, a flywheel connected to the shaft, a stator, and a rotor. The flywheel spins the rotor in one direction to eliminate magnetic flux friction and lighten the rotor load. The rotor can be a flywheel to help stabilize power output during load changes. The stator has a winding with field coils and the rotor has magnets. Cross magnetic field excitation between stator and rotor generates electricity. The flywheel stabilizes rotor speed and helps maintain power output during load changes.

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Wind turbine design to increase power output by accelerating wind speed around the turbine. The key idea is to use nacelle shape modifications to create a Venturi effect that pulls surrounding air into the turbine's wake and increases the speed of the wind flowing over the blades. The nacelle has a contracting cross-section from the inlet to the turbine location, then an expanding section from the turbine to the outlet. This forces surrounding air to accelerate into the turbine's wake, compensating for the wind speed drop caused by the turbine itself. Additional features like dispersion shapes at the outlet and wind inlet gaps between nacelles further enhance the effect.

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Windmill and wind power generation apparatus with improved rotation efficiency. The windmill has a blade with front and rear edges, a shaft, and a supporting member connecting the blade and shaft. The supporting member extends radially and intersects the blade chord line at the rear edge midpoint. This configuration balances centrifugal forces on the blade during rotation. It allows the blade to be supported without added weight or complex mechanisms. The blade rotation energy is more efficiently converted into power.

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Wind power generation system that can generate electricity from low wind speeds and compactly utilize wind resources compared to traditional wind turbines. The system uses a turbofan blade structure with blades arranged oppositely around a central shaft. As the blades rotate from the wind, they create a cavity for repeated airflow impact and diversion. This compact turbine design allows higher blade tip speeds and extraction of more power from low wind speeds. A speed control mechanism connects to the shaft and generates torque. A generator with a shaft connected to the control mechanism converts the torque to electricity. A diverter can connect to stored power from the generators for supplying loads. The one-way transmission device allows the blades to disconnect rotation if the motor exceeds blade speed to prevent overloading.

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Wind-driven electricity generation system with vertical towers and rotating blades inside. The towers have protruding walls that create wind collection sections. Air pressure builds in the sections and releases through openings into an inner compartment. Drive shafts rotate from the airflow. This turns generators, pumps, or transmission gear inside. Multiple tower levels allow scaling. The rotating blades inside eliminate the need for external blades. Closable openings allow maintenance. The system captures more wind pressure and uses it inside for efficient electricity generation.

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Wind turbine frequency regulation using a combination of the rotor, energy storage, and pitch control to improve response time and stability. The method involves first increasing power using the rotor's feedforward-feedback control. Then, for a limited time, add power from the storage and/or pitch. Afterward, use storage and/or pitch alone to maintain power stability. This allows faster response using rotor control, while avoiding grid power fluctuations when rotor control ends. It's applicable to wind turbines where rotor speed can be adjusted.

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Optimizing torque-current ratio control in permanent magnet generators used in wind power systems. The method involves calculating initial active and reactive current references, then searching for optimal values based on a torque-current ratio target to correct for parameter deviations. This allows precise optimal torque per ampere control even as generator parameters change during operation.

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Combining multiple source energy harvesting like solar, wind, and wave into a single device to improve overall energy output. The device has a ducted solar panel that collects solar energy while also directing wind and water flow towards turbines to harvest wind and wave energy. The ducts increase wind speed for the turbine and extract heat from the solar panel to power a thermoelectric generator. This allows combining different renewable sources into a single device for more efficient energy harvesting.

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Optimizing power output of multi-rotor wind turbines by accurately aligning the rotors with the wind. The method involves measuring the wind power parameter (Pw) for each rotor nacelle assembly at multiple relative wind directions. It finds the maximum Pw for each nacelle and averages them to get an optimal control wind direction. The yaw system is then controlled based on that optimal direction to align the rotors with the wind for maximum combined power.

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Wind turbine design that optimizes blade area instead of swept area to significantly increase wind energy capture. The turbine blades are faired at an angle based on wind load to maximize area perpendicular to the wind. This is done by having larger blade areas on one side of a pivoting axis that generates a turning moment. This moment is translated into a force parallel to the turbine axis using springs. If the blades over-speed, a centrifugal release engages. An actuator resets the release. The goal is to capture more power in shorter blades without tall towers, trucks, or cranes compared to current designs.

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Optimizing lubrication of wind turbine blade pitch bearings while minimizing blade loads and maximizing energy production during pitching. The method involves determining a load gradient limit, calculating a pitch rate based on that limit, and pitching the blade at that rate to prevent exceeding the load gradient limit. This balances homogeneous lubricant distribution with acceptable blade loads and power generation.

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Active control system for stabilizing the motion of floating wind turbines to improve performance and reduce loads. The system monitors the offset and oscillations of the pitch and yaw angles from their balanced positions. Actuators then adjust the angles and oscillations to bring them back to balance. This prevents excessive motion that can affect power production and cause loads. The system uses sensors like pressure, wind, strain gauges, and operation mode detectors. It can stabilize pitch and yaw separately or jointly.

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Active wake control for wind turbines to improve farm efficiency by reducing wake effects. The control uses periodic blade pitch changes to excite unstable flow perturbations in the downstream wake, accelerating recovery and increasing available wind for downstream turbines. The pitch actuation frequency, amplitude, and waveform are determined based on inflow measurements and fluid theory to optimize wake recovery and minimize loading.

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Optimizing power generation from clusters of fluid turbines like wind turbines by coordinating their operations to improve efficiency and grid compliance. The method involves using sensors, controllers, and storage devices in each turbine to monitor and regulate power output. When turbines generate below a threshold, excess power is stored. When grid conditions allow, the stored power is released. This allows turbines to keep generating even in low wind conditions, while avoiding grid issues. The method also involves coordinating rectifier inputs, DC-DC converters, and AC inversion to balance voltages across turbines.

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An impeller for wind turbines that maximizes power output at lower wind speeds and reduces blade size compared to conventional wind turbine rotors. The impeller has a rear ring with a central axis that the blades attach to. This allows the blades to pivot around the ring during rotation, increasing the effective swept area of the impeller at lower wind speeds. It also allows using shorter blades for the same power output since the pivoting motion increases the blade tip speed. The pivoting motion is constrained to prevent excessive blade deflection.

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Optimizing wind turbine performance during noise reduced operation to maximize energy output without accelerating component degradation. The optimization involves dynamically adjusting turbine power based on grid conditions instead of fixed noise reduction modes. When component life is prioritized, the turbine limits power near synchronous speed based on grid parameters. When AEP is prioritized, the turbine operates harder to extract max power. A fatigue tracker calculates life consumption.

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