Multiple-Blade Wind Turbine With Closed-Loop Tracks for Low-Wind Power
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Solution Overview
Problem
Existing wind turbines, particularly multiple blade designs, suffer from suboptimal power output and efficiency, necessitating improvements to enhance energy generation capabilities.
Innovation Solution
A multiple blade wind turbine design featuring a central support tower with closed loop tracks and airfoil-shaped blades oriented perpendicular to airflow, utilizing an oval path and adjustable pitch angles, along with a transmission system to optimize power generation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple blade wind turbine designs are used, then power output and efficiency can be improved, but device complexity increases
Solution Approach 1:
The wind turbine rotor is segmented into multiple airfoil-shaped blades (at least three blades) arranged around a central hub, with each blade operating independently to capture wind energy. This segmentation allows the system to process more wind energy simultaneously, increasing power output while maintaining manageable complexity through modular blade design
Solution Approach 2:
The invention transitions from traditional horizontal-axis wind turbine design to a vertical-axis configuration where airfoil-shaped blades rotate around a central support tower. This dimensional change enables the blades to interact with wind from multiple directions and creates a linear cascade arrangement that enhances power generation efficiency without proportionally increasing system complexity
2Force
If airfoil-shaped blades are oriented perpendicular to airflow with adjustable pitch angles, then lift force and power density increase, but manufacturing precision requirements increase
Solution Approach 1:
The wind turbine incorporates adjustable pitch angles for the airfoil-shaped blades, allowing the orientation of each blade relative to the airflow to be dynamically optimized. This dynamic adjustment capability enables the system to maximize lift force under varying wind conditions while using standard manufacturing tolerances, as the optimal angle can be adjusted rather than requiring precision manufacturing for each specific angle
Solution Approach 2:
The invention utilizes parameters such as pitch angle (between -90 and 90 degrees) and blade spacing (1.0 to 2.5 chord lengths apart) that can be optimized to enhance lift force and power density. By adjusting these parameters within defined ranges, the system achieves high performance without requiring extreme manufacturing precision, as the design accommodates a range of acceptable values
3Productivity
If closed loop tracks with oval path are used, then blade tip losses are reduced and efficiency increases, but device complexity increases
Solution Approach 1:
The invention employs closed loop tracks with an oval path configuration instead of traditional straight or circular arrangements. This curved oval path design reduces blade tip losses by creating a more aerodynamic flow pattern around the blade tips, improving overall system efficiency. The oval geometry, while more complex than a simple circle, provides significant aerodynamic benefits with moderate increases in structural 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 design achieves higher power density, increased lift force, and reduced blade tip losses, enabling efficient power production even in low wind speeds, with potential for reduced manufacturing and maintenance costs.
Implementation Method 1
a plurality of airfoil-shaped blades, each airfoil-shaped blade oriented perpendicular to the airflow... the set of closed loop tracks drives the transmission
Data Source
AI summary
A multiple blade wind turbine includes a base, a central support tower, and at least one rotor. The central support tower extends vertically from the base and is adapted to support the rotor. The rotor includes airfoil-shaped blades and an electric generator coupled to a set of closed loop tracks via a transmission. The set of closed loop tracks is spaced vertically apart from each other. The airfoil-shaped blades are interspaced within the set of closed loop tracks. Each airfoil-shaped blade is oriented perpendicular to the airflow and connected at each end to one of the set of closed loop tracks such that a windward and a leeward set of airfoil-shaped blades are aligned to form a linear cascade of parallel airfoil-shaped blades. Each airfoil-shaped blade has a pitch angle between −90 and 90 degrees and each airfoil-shaped blade is spaced between 1.0 and 2.5 chord lengths apart.