Deployable Aerodynamic Component for Wind Turbine Rotor Blades
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Solution Overview
Problem
Wind turbines experience low aerodynamic efficiency due to the lack of an aerodynamic profile at the inner rotor section, resulting in low torque extraction and inefficient energy production, as not all kinetic energy of the wind is utilized.
Innovation Solution
A deployable aerodynamic component is mounted on the wind turbine, which can redirect incoming wind to the more aerodynamically efficient outer portion of the rotor blade when winds are within certain parameters, and allow the wind to pass through to the inner portion when winds exceed these parameters, while allowing pitch angle adjustments without interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the wind turbine uses a conventional rotor blade design without aerodynamic profile at inner section, then the structure is simple and cost-effective, but the aerodynamic efficiency is low and torque extraction is insufficient
Solution Approach 1:
The rotor blade is divided into two distinct sections: an inner portion without aerodynamic profile for structural simplicity and an outer portion with aerodynamic profile for efficient energy extraction. This segmentation allows each section to serve its specific function optimally while maintaining overall system effectiveness.
Solution Approach 2:
The aerodynamic profile is applied locally only to the outer portion of the rotor blade where it is most needed for torque extraction, while the inner portion maintains a simpler structure. This local quality approach optimizes aerodynamic performance without requiring complex structures throughout the entire blade.
2Adaptability or versatility
If the wind turbine allows pitch angle adjustment of rotor blades, then the adaptability to different wind conditions is improved, but the mechanism complexity increases
Solution Approach 1:
The rotor blade incorporates a pitch mechanism that enables dynamic adjustment of the blade angle relative to the wind direction. This dynamic capability allows the turbine to adapt to varying wind conditions, optimizing energy capture across different operational scenarios.
3Productivity
If the wind turbine directs all incoming wind to the outer portion of rotor blade, then the aerodynamic efficiency increases, but the ability to handle high wind conditions safely is reduced
Solution Approach 1:
The deployable aerodynamic component can dynamically change its configuration between deployed and retracted states. In normal wind conditions, it directs flow to the outer blade portion for maximum efficiency. In high wind conditions, it can be retracted or adjusted to allow direct flow to the inner portion, providing a safety mechanism to prevent overload.
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
This solution enhances the aerodynamic performance and energy capture of the wind turbine by accelerating airflow into more efficient regions, increasing the coefficient of power (Cp) and overall energy production.
Implementation Method 1
The aerodynamic component is structurally configured to: operate in a deployed state to redirect an incoming wind toward the profiled outer portion of the at least one rotor blade
Data Source
AI summary
A deployable aerodynamic component configured to be mounted to a wind turbine. The wind turbine includes at least one rotor blade. The deployable aerodynamic component configured to be positioned in front of an inner portion of the at least one rotor blade, and is structurally configured to cover a substantial portion of the inner portion of the at least one rotor blade in a wind direction during deployment of the deployable aerodynamic component and to allow the passage therethrough of an incoming wind when non-deployed. Further described is a wind turbine including the above-described deployable aerodynamic component and method for aerodynamic performance enhancement of an existing wind turbine, wherein the method includes mounting the above-described deployable aerodynamic component to a wind turbine.