Wind Turbine Nacelle Assembly with Segmented Compartments
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Solution Overview
Problem
Existing wind turbine nacelle assemblies face a challenge in balancing the need for a spacious protective compartment with the requirement to minimize weight and bulk, while also ensuring easy access and robust structural support for sensitive components.
Innovation Solution
A compact nacelle assembly design featuring a supporting structure with integrated cogwheels and a platform that includes multiple access openings, made by casting for high strength, and connection interfaces to support equipment, allowing for efficient load transfer and housing of sensitive parts, including a rotating mechanism and cooling systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a large nacelle assembly is used to define a spacious protective compartment, then access to sensitive parts and transport of spare parts is improved, but the weight and bulk of the nacelle assembly increase
Solution Approach 1:
The nacelle assembly is divided into multiple compartments: a first protective compartment for housing sensitive parts and a second protective compartment for housing the rotating mechanism and additional equipment. This segmentation allows optimized space utilization and access patterns without requiring a single large compartment, thereby reducing overall weight while maintaining operational accessibility.
Solution Approach 2:
The patent introduces a platform with a floor that creates a second protective compartment beneath the main structure. This vertical dimensionality allows the rotating mechanism and additional equipment to be housed in a lower space, freeing up the main compartment for sensitive parts while maintaining compact overall dimensions and reducing weight.
2Ease of operation
If a large nacelle assembly is used to define a spacious protective compartment, then access to sensitive parts and transport of spare parts is improved, but the bulk of the nacelle assembly increases
Solution Approach 1:
The nacelle assembly is divided into multiple compartments: a first protective compartment for housing sensitive parts and a second protective compartment for housing the rotating mechanism and additional equipment. This segmentation allows optimized space utilization and access patterns without requiring a single large compartment, thereby reducing overall volume while maintaining operational accessibility.
Solution Approach 2:
The platform with its floor and covering creates a nested second protective compartment within the overall nacelle structure. This nesting approach allows the rotating mechanism and additional equipment to be housed within the bulk of the nacelle assembly without increasing the external dimensions, thereby maintaining compact overall volume while providing internal space for multiple functions.
3Weight of stationary object
If the supporting structure is made compact to reduce weight and bulk, then the weight and bulk of the nacelle assembly are reduced, but access to the electric generator and sensitive parts becomes difficult
Solution Approach 1:
The supporting structure is segmented with multiple openings: a first opening for connecting the electric generator, a second opening for access from the vertical support, and a third opening for access from the platform floor. This segmentation of access points allows the structure to remain compact while providing multiple routes for maintenance personnel to reach the electric generator and sensitive parts, thereby maintaining ease of operation without increasing overall size.
Solution Approach 2:
The supporting structure serves multiple functions simultaneously: it provides structural support, defines protective compartments, provides access points for maintenance, and houses the rotating mechanism. This multi-functionality allows the structure to remain compact and lightweight while still facilitating easy access to all critical components through strategically positioned openings and pathways.
4Strength
If traditional supporting structures are used to ensure structural strength, then structural robustness is improved, but the weight and bulk of the nacelle assembly increase
Solution Approach 1:
The supporting walls are made by casting, creating a monolithic structure that combines the strength of traditional supporting structures with weight reduction. The casting process allows for optimized material distribution, providing structural robustness where needed while minimizing overall weight. The integral casting of supporting walls also reduces the need for additional reinforcement elements, further reducing weight while maintaining strength.
Data Source
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AI summary
A nacelle assembly (3) for a wind turbine (1) rotates at the top of a vertical support (2) and supports an electric generator (4) and a blade assembly (5), and has a supporting structure (23) to transfer loads between the blade assembly (5) and the vertical support (2) and to define a first protective compartment (24) for housing sensitive parts of the wind turbine (1); and a platform (25) integral with the supporting structure (23) and defining a floor (26) and a second protective compartment (27) for housing further sensitive parts of the wind turbine (1).