Telescoping Offshore Wind Turbine Tower Design
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Solution Overview
Problem
Offshore wind turbines face challenges in withstanding wind, wave, and current loads, leading to increased manufacturing costs and complex installation processes due to the need for large, heavy towers to prevent collapse.
Innovation Solution
An offshore wind turbine design featuring a floatable tower and support truss with an elongate base, adjustable buoyancy, and a telescoping mechanism, allowing for easier installation and reduced structural mass by using a buoyant truss with ballastable components and guide wires for stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If conventional heavy towers are used to withstand wind, wave, and current loads, then structural strength is improved, but manufacturing cost and installation complexity increase
Solution Approach 1:
The tower is divided into multiple telescoping sections that can be independently manufactured and assembled. The tower includes a base section, intermediate sections, and a top section that can be stacked and extended, allowing for modular construction and reduced installation complexity while maintaining structural strength
Solution Approach 2:
The telescoping tower sections are nested within each other, with smaller sections fitting inside larger sections. This nesting arrangement reduces the overall footprint during transport and storage, while allowing the tower to extend to full height during operation, thereby reducing installation complexity and cost
2Strength
If conventional heavy towers are used to withstand wind, wave, and current loads, then structural strength is improved, but manufacturing cost increases
Solution Approach 1:
The tower is segmented into multiple manageable sections that can be manufactured separately using standardized processes. This segmentation allows for more efficient manufacturing, reduced material waste, and lower overall manufacturing costs while maintaining the required structural strength through optimized section design
Solution Approach 2:
The tower design utilizes variable wall thickness and material distribution across different sections, with thicker walls at the base and thinner walls at higher sections. This parameter optimization reduces material usage and manufacturing cost while maintaining adequate structural strength to withstand wind, wave, and current loads
3Strength
If larger tower cross-sectional areas are used to withstand increased loading in deeper water, then structural strength is improved, but device complexity and installation difficulty increase
Solution Approach 1:
The tower is divided into telescoping sections that can be assembled in a compact configuration during transport and then extended to the required height and cross-sectional area at the installation site. This segmentation allows for easier transport and installation while achieving the necessary structural strength for deep water applications
Solution Approach 2:
The tower incorporates telescoping mechanisms that allow it to dynamically change its configuration from a compact transport state to an extended operational state. This dynamic capability enables the tower to achieve large cross-sectional areas for strength while maintaining a small footprint during installation, reducing installation difficulty
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 reduces the structural mass and installation complexity of offshore wind turbines, enhancing their ability to withstand wind, wave, and current loads while lowering manufacturing and installation costs, and simplifying maintenance access.
Implementation Method 1
a floatable tower and support truss... an elongate base... a buoyant truss with ballastable components
Data Source
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AI summary
An offshore wind turbine comprises an elongate base having a longitudinal axis, a first end, and a second end opposite the first end. In addition, the wind turbine comprises a tower moveably coupled to the base. The tower has a first end distal the base and a second end disposed within the base, and the tower is configured to telescope axially from the first end of the truss. Further, the wind turbine comprises a nacelle coupled to the first end of the tower. Still further, the wind turbine comprises a rotor including a hub and a plurality of blades coupled to the hub. The hub is coupled to the nacelle.