Vertical Axis Wind Generator Using Guided Carts
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Solution Overview
Problem
Existing wind energy generation technologies face challenges such as scalability issues, large component sizes, high costs, safety concerns due to high aerofoil tip speeds, and noise, as well as difficulties in maintenance and installation.
Innovation Solution
A system featuring a rotatable closed-loop track with multiple aerofoil carts that move along the track when wind blows, driving a gear to generate electricity, with adjustable aerofoil angles and buffer carts for spacing, allowing for efficient energy harnessing with smaller components and lower operational risks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If traditional wind turbine designs are used, then power generation capability is achieved, but component size becomes large and cost increases
Solution Approach 1:
The wind energy conversion system is divided into multiple independent carts that travel along a circular track. Each cart contains an aerofoil and independently converts wind energy to mechanical motion. This segmentation allows the system to achieve substantial power generation through cumulative effect of multiple small units rather than relying on a single large component.
Solution Approach 2:
The invention transitions from the traditional vertical axis wind turbine design to a horizontal circular track system. Carts move along a horizontal circular path, converting wind energy into rotational motion of the track. This dimensional change enables smaller component sizes while maintaining power generation capability through the collective motion of multiple carts.
2Power
If traditional wind turbine designs are used, then power generation is achieved, but manufacturing and installation cost increases
Solution Approach 1:
The system uses multiple identical or similar carts that can be manufactured using standardized processes. Each cart is a discrete, modular unit that can be produced independently and assembled into the complete system. This modular approach significantly reduces manufacturing complexity and installation costs compared to traditional wind turbines with large, custom-molded components.
Solution Approach 2:
The carts are designed as simpler, more durable units that can be easily replaced if needed. The modular cart design with standardized components allows for cost-effective manufacturing and potential replacement without requiring expensive specialized fabrication processes.
3Productivity
If high aerofoil tip speeds are used, then power generation efficiency improves, but safety issues and noise increase
Solution Approach 1:
The power generation function is distributed across multiple carts moving at moderate speeds along the track, rather than concentrating energy extraction in a single high-speed rotating blade. The cumulative effect of multiple carts moving at lower speeds achieves comparable power generation while eliminating the safety hazards and noise associated with high tip speeds.
Solution Approach 2:
The system uses the continuous circular motion of multiple carts along the track to maintain constant energy extraction from the wind. The dynamic configuration of multiple moving carts replaces the static high-speed rotation of traditional blades, achieving efficient power generation through sustained moderate-speed motion rather than high-speed rotation.
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 enhances efficiency, simplifies control, reduces component and installation costs, lowers aerofoil speeds for safer operation, and minimizes noise, while enabling easier scaling and ground-level access for maintenance.
Implementation Method 1
The wind blowing in the sail generates movement of the steel frame containing the sail, creating energy
Implementation Method 2
U.S. Pat. No. 6,672,522 to Lee et al. relates to a system with a sail mounted on a rail with a gear that generates electricity when movement of the sail is induced by the wind
Implementation Method 3
Multiple tracks with multiple carts in motion drive a driveshaft positioned at the centre of the system, which drives a generator
Data Source
AI summary
Carts with aerofoils move around an elongated, looped track under the force of the wind. Carts are connected to each other in a train on the windward side of the track and collectively rotate gear wheels at the side of the track, via racks mounted on the carts that engage with the gears. The gears ultimately power an electrical generator mounted in the base of the system. The system has multiple tracks stacked one above the other and mounted on a rotatable structure that can be turned to optimize wind energy harvesting. The angle of the aerofoils is adjusted at different locations of the cart on the track when desired. Intervening buffer carts without aerofoils are used to space the carts with aerofoils. The speed of the carts is a fraction of the wind speed.