Steady Power Output in Wind Turbines

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 voltage peaks in wind turbine tower connections using customized connection elements. The method involves using CAD/CAM and AI to determine the size, shape, and position of connection elements between upper and lower tower sections to optimize load transfer and compensate for size variations. The elements are then fabricated and installed. This reduces voltage peaks compared to standard off-the-shelf connections. The AI optimization involves feeding in component sizes and using neural networks to determine the connection element properties.

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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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Double-set blade wind turbine design with two concentric cylinders of blades around the central hub. The inner cylinder has blades that rotate with the wind, while the outer cylinder has fixed blades. The blades on the inner rotating cylinder have a different curvature compared to the outer fixed cylinder. This asymmetric blade configuration improves power output by reducing wind interference between the blades as they rotate. The fixed outer blades prevent the wind from stalling the inner rotating blades, allowing them to continue generating power.

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Vertical axis wind turbine design that allows automatic direction control without external power and prevents overturning or collapse when wind speeds increase. The turbine has vertical blades that revolve around a central shaft. The key features are: 1. The blades and central shaft can tilt up and down to balance forces and prevent overturning when winds are strong. 2. The blades interlock their revolution phases so they always generate forward thrust when revolving. This eliminates backward thrust. 3. The left and right blade assemblies tilt together to balance forces. 4. The blades and shafts can tilt up and down to balance forces and prevent overturning when winds are strong. 5. The blades interlock their revolution phases so they always generate forward thrust when revolving. This eliminates backward thrust. 6. The left and right blade assemblies tilt together to balance forces. 7. The

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Short- to medium-term wind power prediction method and system for wind farms that improves accuracy by using real-time blade parameters and historical data from multiple wind turbines. Each wind turbine has an edge controller with shared memory. The controller collects blade parameters, predicts local wind power, and stores historical data. Multiple algorithms are called to predict wind power using real-time data and historical data from nearby turbines. The predictions are weighted and summed for the final result.

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Dual-mode control method and system for timely monitoring of wind turbines based on wind speed to improve wind power generation efficiency. The method involves using machine learning to predict wind speed trends, analyze factors affecting wind speed changes, and quantify wind speed variability. This allows timely adjustment of wind turbine operation to optimize power generation in response to changing wind conditions.

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Intelligent real-time monitoring system and method for wind turbines that optimizes power generation and reduces failures by actively adjusting the blade orientation to track the wind direction. The system uses sensors to detect wind direction and blade position, calculates the blade angle relative to wind, and uses a stepper motor to rotate the blade assembly to align with the wind. This allows the turbine to better capture wind energy and avoid stalling. The system also monitors blade forces and adjusts orientation based on thresholds to prevent overloading.

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Optimizing wind farm active power regulation during grid frequency fluctuations using model predictive control to accurately allocate adjustment amounts to each wind turbine. This involves quantifying the active support capability of wind turbines using simulation when they only use rotor kinetic energy for short-term regulation. The turbine's maximum up and down power adjustments are calculated under different wind speeds. Then during frequency deviations, the total farm adjustment is computed and allocated per turbine via MPC to avoid exceeding their support limits and prevent rotor speed issues.

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Intelligent monitoring and prediction system for wind power towers to improve efficiency and prevent issues. The system uses sensors like compass, anemometer, inclinometer, temperature/humidity on each tower, along with a central control board, 4G module, cloud server, Beidou module, and wind turbine controller. It predicts overall wind direction and strength for the tower group using data from multiple towers, allowing advance control to optimize energy capture. This improves efficiency compared to single tower prediction. It also detects issues like tower tilt or vibration, allowing early warning and response.

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Robust adaptive fault-tolerant control method for wind turbines using machine learning to improve fault detection and adaptation for wind turbines. The method involves training a machine learning model using historical wind turbine data to learn normal operating conditions and failures. During real-time operation, the model is used to continuously monitor the wind turbine and detect deviations from normal behavior. If a fault is detected, the model provides recommendations for adaptive control strategies to mitigate the fault and maintain stability. The adaptive control is based on the specific fault type and severity, learned from the training data. This allows the wind turbine to respond dynamically to unforeseen failures and environmental changes, improving fault tolerance and system stability compared to traditional control methods.

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Power generation control method for wind turbines using a SCADA system to optimize performance and reduce failures. The method involves monitoring wind turbine equipment, generating expected power based on wind speed, comparing actual power, and adjusting parameters if needed. The comparison uses evaluation coefficients to determine when to correct. If the actual power deviates significantly from expected, a correction is generated. If the deviation is smaller, a trend analysis is done to decide if a correction is needed. This allows targeted adjustments to wind turbine parameters based on actual operating conditions.

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Method for evaluating the transient active power regulation capability of wind turbines using rotor kinetic energy control. It provides a rapid and accurate way to assess how much active power a wind farm can provide during grid disturbances. The method involves optimizing wind turbine control instructions to maximize active power support while considering rotor speed, torque, and inverter capacity constraints. An optimization algorithm is used to find the optimal adjustment amounts and response times. This allows rapid calculation of the wind farm's transient active power support capacity.

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Optimizing the droop coefficient of wind turbines using model predictive control to improve frequency regulation and stability of wind power systems. The method involves collecting system data, building a frequency response model, setting an initial droop value, iteratively optimizing the droop through model predictive control, and simulating time domain operation to find the optimal sequence of droop coefficients for wind turbines during frequency disturbances.

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Optimizing wind turbine operation to balance energy production, grid stability, and maintenance scheduling. The method involves forecasting operating parameters like turbine health and wind conditions, then determining a control scheme for the turbine that balances factors like energy production, failure risk, and grid demand. It uses evaluation matrices and optimization techniques to find the best timing and power limits for shutdowns and operation. This balances factors like energy production, grid stability, and maintenance scheduling.

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Method and system for switching operating states of wind turbines that accurately predicts and controls turbine operation for improved efficiency, fault handling, and wind load mitigation. The method involves collecting turbine and wind data, determining status modes like startup, generation, shutdown, etc., predicting optimal adjustments based on models, and regulating blade angle and speed using a PID controller. This allows targeted response to wind conditions and faults rather than blanket shutdowns.

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Online monitoring of wind turbine power using machine learning to improve reliability and timeliness compared to existing methods. The method involves training a wind speed-power mapping model using historical data, calculating power discreteness in wind speed intervals, and using that to assess wind turbine power normality in real time. This allows quick detection of abnormal power and reduces losses compared to waiting for periodic offline monitoring.

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Controlling the rate of change of power in wind farms using inertia response of wind turbines to smooth power output. The method involves monitoring the rate of change of active power in the wind farm, and independently controlling each wind turbine's power change rate based on its inertia response. This reduces turbine-level power rate changes. If the wind farm-wide power rate change exceeds a threshold, coordinated control is triggered to further reduce the overall power rate change. By leveraging turbine inertia, it smoothens wind farm power output compared to just changing power quickly.

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Wind turbine control method that mitigates oscillations and instability caused by fluctuating wind speeds. It considers short-term fluctuations in wind speed and generator speed to determine if the turbine dynamics will be affected. By calculating an index based on these fluctuations, the method can instruct the main turbine control system to change pitch or shut down to prevent oscillations. This prevents dynamic issues caused by imperfect logic when wind speeds fluctuate greatly.

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