Vertical Axis Turbine Dynamic Blade Positioning
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Solution Overview
Problem
Vertical axis wind turbines face inefficiencies in capturing wind energy compared to horizontal axis turbines, as they do not need to be rotated to face the wind, but their design limits their energy capture capabilities.
Innovation Solution
The vertical axis turbine design includes a rotatable frame with opposing masts or blades connected by cords that regulate their position based on wind direction, allowing for efficient energy capture from any direction, similar to horizontal axis turbines, and features a central hub system for adaptable configuration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If vertical axis wind turbines are used, then the turbine does not need to be rotated to face the wind, but the efficiency of wind energy capture is reduced
Solution Approach 1:
The patent applies dynamics by making the blade positions adjustable rather than fixed. The blades can dynamically change their angular position around the vertical axis to optimize wind capture efficiency while maintaining the vertical axis configuration that eliminates the need for rotation to face the wind
Solution Approach 2:
The patent changes the parameter of blade orientation angle. By allowing the blades to vary their angular position relative to the vertical axis, the system can optimize aerodynamic performance and energy capture efficiency without sacrificing the omnidirectional capability of the vertical axis design
2Productivity
If horizontal axis wind turbines are used, then wind energy capture efficiency is improved, but the turbine must be rotated to face the incoming wind which is time consuming and requires energy
Solution Approach 1:
The patent makes the blade configuration dynamic rather than static. The ability to adjust blade positions allows the turbine to adapt to changing wind conditions without requiring rotation of the entire turbine structure, thus eliminating time loss while maintaining high energy capture efficiency
3Productivity
If horizontal axis wind turbines are used, then wind energy capture efficiency is improved, but energy is required to rotate the turbine which reduces overall efficiency
Solution Approach 1:
The patent implements dynamic blade positioning that can be adjusted to optimize performance without requiring energy-intensive rotation of the entire turbine. This dynamic adjustment allows the system to maintain high energy capture efficiency while minimizing or eliminating the energy required for orientation changes
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 design enhances the efficiency of wind energy capture by dynamically adjusting the position of sails or blades to maximize wind interaction, improving energy conversion and allowing for omnidirectional energy harvesting.
Implementation Method 1
The cord extends within the opening of the corresponding retaining members, wherein the cord is configured to regulate the position of the at least two blades or sails, such that the position of one influences the position of the other
Implementation Method 2
The central hub is movable based on the direction of an incoming wind
Implementation Method 3
A turbine is a device that converts kinetic energy from the movement of a medium into electrical power
Data Source
AI summary
The vertical axis turbine may include a frame rotatable about the central axis. In one variation at least two masts, each having a boom, are coupled to the frame and at least one sail is coupled to each mast and boom. In another variation, at least two blades are rotatably coupled to the frame and being substantially perpendicular to the frame. The frame may also include at least two retaining members being attached to the frame. Each retaining members defines an opening and corresponds to each mast or blade. A cord is coupled between the two generally opposing booms or blades. The cord extends within the opening of the corresponding retaining members, wherein the cord is configured to regulate the position of the at least one blade or sail. Alternatively, the vertical axis turbine may include a central hub. The cords from each boom or blade extend through each retaining member and then attach to the central hub.