Gyroscopic Blade Stabilization for Wind Turbine Vibration Suppression
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Solution Overview
Problem
Wind turbine blades experience unwanted vibrations due to external loads like wind and gravity, leading to potential damage and reduced lifespan, with existing solutions either reducing energy production or requiring redesign of the turbine.
Innovation Solution
An actively controlled gyroscopic stabilization system is implemented for each blade, comprising a gyroscope with a rotation control axis and two rigid body control axes, along with sensors and flywheel drive actuators to detect and counteract vibrations, thereby suppressing blade motions without affecting energy production.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If active vibration suppression methods are used, then blade vibration is reduced, but energy production is reduced
Solution Approach 1:
The patent replaces traditional mechanical pitch control systems with a gyroscopic stabilization system that uses sensors and actuators to directly counteract blade vibrations. The gyroscopic system generates counteracting forces through controlled rotation of the flywheel, providing vibration suppression without modifying the pitch control mechanism that is critical for energy production.
Solution Approach 2:
The patent introduces a gyroscopic stabilization system as an intermediary between the blade and the pitch control system. This intermediary component (the gyroscopic stabilizer with flywheel and sensors) actively counteracts vibrations before they affect the blade structure, while leaving the original pitch control system unchanged and fully functional for energy production.
2Object-affected harmful factors
If pitch control modification is used to suppress vibrations, then blade vibration is reduced, but energy production effectiveness is reduced
Solution Approach 1:
The patent segments the vibration suppression function from the pitch control function. The gyroscopic stabilization system handles vibration suppression independently through sensors and counteracting forces, while the pitch control system continues to optimize energy production without modification. This functional segmentation allows both objectives to be achieved simultaneously without compromise.
3Object-affected harmful factors
If structural tailoring is used, then vibration suppression is achieved, but device complexity increases
Solution Approach 1:
The gyroscopic stabilization system serves multiple functions: it suppresses blade vibrations, provides structural reinforcement where mounted, and can be adapted to different blade positions. The same basic gyroscopic mechanism can be applied to any blade without requiring unique structural modifications for each installation location, reducing overall design complexity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system effectively reduces blade vibrations, extending their lifespan without requiring changes to existing turbine designs, while maintaining energy production efficiency.
Implementation Method 1
at least one actively controlled gyroscopic stabilization system for each blade... a gyroscope with a rotation control axis extending in a first direction, a first rigid body control axis extending in a second direction different from the first direction, a second rigid body control axis extending in a third direction different from the first and second directions
Implementation Method 2
at least one flywheel drive actuator configured to apply a controlled torque over the gyroscope
Data Source
Figure 1
Figure 2~3
AI summary
The invention relates to a vibration suppression system and method, for a wind turbine comprising a plurality of blades. The system comprises, for each blade, a stabilization system comprising a gyroscope with a control axis extending in a first direction, a first rigid body control axis extending in a second direction different from the first direction, a second rigid body control axis extending in a third direction different from the first and second directions and a flywheel rotatable in respect of the control axis and free to move in respect of at least one of the rigid body control axes. The stabilization system comprises an actuator to apply a torque over the gyroscope, and a respective sensor to detect the motions of each blade. The suppression system comprises a control device for controlling the actuation of the actuators according to said detections, in order to suppress unwanted motions of the blades.