Counter-Rotating Wind Duct Apparatus for Torque Efficiency
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Solution Overview
Problem
Conventional wind power generation technologies face challenges such as high maintenance costs, structural weaknesses, limited torque conversion efficiency, reliance on external wind conditions, and transmission losses, particularly in urban areas where wind conditions are unfavorable.
Innovation Solution
The apparatus employs a dual wind duct system with converging modules to increase wind velocity and create a cascading effect, combined with a pressure-balancing and guiding unit, axial flux DC generator, and counter-rotating blades to enhance wind impact and self-reinforcement, reducing weight and ecological footprint while minimizing external factor reliance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If direct wind flow is used to rotate blades, then the structure is simple, but the actual volume of wind impact onto the blade is only 10-20% of total flow and torque conversion efficiency is limited to maximum 59%
Solution Approach 1:
A duct is introduced as an intermediary component between the wind source and the turbine blades. The duct channels and concentrates the wind flow, directing a higher volume of wind (more than 10-20% of total flow) onto the blades, thereby improving torque conversion efficiency beyond the 59% limitation of direct flow systems
Solution Approach 2:
The duct modifies wind flow parameters by concentrating and directing the flow, increasing the velocity and volume of wind impacting the blades. This parameter change enables the system to overcome the efficiency limitation of direct wind flow systems
2Reliability
If turbines are constructed at remote locations to access favorable wind conditions, then wind power generation is feasible, but transmission losses occur while supplying power to end users in cities
Solution Approach 1:
The duct system is designed to actively draw in surrounding wind and direct it to the turbine, making the system self-sufficient in creating favorable wind conditions rather than relying on distant locations with naturally favorable winds. This enables urban installation while eliminating transmission losses
3Productivity
If horizontal axis wind turbines with three large blades are used, then majority of wind power is produced, but massive towers are needed to support heavy components and additional yaw control mechanisms are required
Solution Approach 1:
Instead of using a horizontal axis turbine that requires a massive tower and yaw control, the invention inverts the approach by using a vertical axis configuration where the duct actively directs wind to the blades. This eliminates the need for tall towers and complex yaw mechanisms while maintaining power production capability
4Adaptability or versatility
If conventional vertical axis wind turbines are used, then wind direction variability is negated, but low rotational speed creates higher torque and consequently an expensive drive train
Solution Approach 1:
The duct extracts and concentrates wind flow to create higher velocity wind that directly impacts the blades. This extracted and concentrated wind flow enables the turbine to achieve sufficient rotational speed without requiring an expensive drive train, while maintaining vertical axis advantages of wind direction independence
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 wind energy conversion efficiency, reduces transmission losses, and allows for cost-effective, self-reinforcing, and ecologically safe wind power generation, suitable for urban and remote locations with scalable capacity.
Implementation Method 1
at least one axial flux DC generator, wherein said wind intake system comprises booster ducts adapted to increase the volume of the wind and to maintain the required pressure for operation of the apparatus and said axial flux DC generator comprises a plurality of alternating layers of copper wire coils and permanent magnets, adapted to convert the mechanical energy of the rotating shaft of the primary blade unit to electrical energy
Implementation Method 2
wherein the high velocity wind blowing in the vertical channel, creates a low pressure area in said secondary duct causing more wind to get sucked into the secondary duct
Implementation Method 3
the direction of rotation of the copper wire coils in the axial flux DC generator is influenced by the direction of rotation of said secondary blade(s) and the direction of rotation of the permanent magnets in the axial flux DC generator is influenced by the direction of rotation of said primary blade(s) to create a counter-rotating motion between the primary blade unit, the secondary blade unit and the components of the booster and generator unit, thereby causing an increase in the velocity of the wind flowing through the apparatus
Data Source
AI summary
The present disclosure relates to an apparatus (10) for wind power generation comprising at least one primary wind duct (12); at least one secondary wind duct (14); at least one pressure-balancing and guiding unit (14); at least one primary blade unit (20); at least one booster and generator unit (22); at least one secondary blade unit (24); and at least one extractor (26). Characteristically, a counter-rotating motion is created between the primary blade unit (20), the secondary blade unit (24) and the components of the booster and generator unit (22), which causes an increase in the velocity of the wind flowing through the apparatus (10) and a resultant increase in the impact of the high velocity wind on the blades; further amplifying the self-reinforcing effect occurring at each stage of the apparatus (10).