Multi-Rotor Wind Turbine with Stator Vanes
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Solution Overview
Problem
Conventional wind power systems require high windspeeds and large structures, leading to increased costs and limited installation to areas with high winds, making them inefficient and economically challenging for widespread adoption.
Innovation Solution
A wind power system featuring rotors with flat blades inclined between 25° and 90°, a stator with a tubular body and curved vanes to maximize wind capture, and a multi-rotor structure with a tubular perimetric structure to increase efficiency and reduce costs, allowing operation at lower windspeeds and in areas with low wind levels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the diameter of rotor increases to capture more wind energy, then the wind capture area increases, but the specific yield decreases and the windspeed required to trigger rotation increases
Solution Approach 1:
The invention divides the single large rotor into multiple smaller rotors arranged in a multi-rotor structure. Each rotor maintains optimal specific yield characteristics while the collective arrangement captures wind energy across a larger area, resolving the contradiction between area and specific yield
Solution Approach 2:
The invention transitions from a single-plane rotor to a multi-rotor spatial arrangement, utilizing three-dimensional space to capture wind energy from multiple directions and at different heights, thereby increasing effective capture area without compromising specific yield of individual rotors
2Area of stationary object
If the diameter of rotor increases to capture more wind energy, then the wind capture area increases, but the windspeed necessary to trigger rotation increases
Solution Approach 1:
By segmenting the wind capture function into multiple smaller rotors, each rotor can be designed with optimal blade geometry and size to rotate at lower windspeeds, while the collective system captures wind across a larger effective area
Solution Approach 2:
The invention changes the operational parameters of individual rotors (size, blade design, inclination angles) to optimize for lower windspeed operation, while the multi-rotor configuration maintains large effective capture area through spatial arrangement
3Length of stationary object
If the height and diameter of supporting mast increases to raise the system higher, then the wind capture area and wind quality improve, but the installation costs increase exponentially
Solution Approach 1:
The invention segments the wind capture function into multiple rotors that can be positioned at different heights and locations, allowing the system to capture high-quality wind without requiring a single extremely tall mast, thereby reducing installation costs
4Length of moving object
If the length of blades increases to increase the diameter of rotor, then the wind capture area increases, but the installation costs increase exponentially
Solution Approach 1:
The invention uses multiple shorter blades on separate rotors instead of one or few extremely long blades, reducing the complexity and cost of manufacturing, transporting, and installing blade structures while maintaining effective wind capture area
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 achieves higher energy yields, reduces installation costs, and can operate effectively in areas with low winds, offering increased operational time and reduced maintenance needs while being agri-compatible due to its design.
Implementation Method 1
a stator (4), which is arranged upstream of the at least one rotor (2) and is provided with a tubular body (6) that is coaxial to the shaft (7) of the rotor (2) and coaxial to a substantially cylindrical outer enclosure (8)... with respective curved vanes (10) that are profiled to direct the air entering the system (1) toward the outer portion of the rotor (2)
Implementation Method 2
at least one rotor (2), which controls at least one respective driven utility apparatus (3)... The at least one rotor (2) is provided with a plurality of blades (5), which are arranged radially and have a substantially flat profile
Data Source
Figure 1
Figure 2
AI summary
A wind power system (1), comprising at least one rotor (2), which controls a respective driven utility apparatus (3), and at least one stator (4); the at least one rotor (2) is provided with a plurality of vanes (5), arranged radially, which have a substantially flat profile, The vanes (5) are inclined with respect to the rotation axis of the rotor (2) through an angle comprised between 25° and 90°; the system (1) further comprises at least one stator (4) that is arranged upstream of the at least one rotor (2) and is provided with a tubular body (6) that is coaxial to the shaft (7) of the rotor (2) and coaxial to a substantially cylindrical outer enclosure (8); the tubular body (6) is provided with a tapered end fairing (9) and with respective curved blades (10) that are profiled to direct the air entering the system (1) toward the outer portion of the rotor (2) onto the vanes (5), according to a preset angle of incidence that is adapted to maximize the yield of the wind power system (1 ); between the inner walls of the enclosure (8), two adjacent blades (10) and the tubular body there is a forced path for the air entering the system (1)·