Segmented Wind Turbine Generator for Transportable Assembly
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Solution Overview
Problem
The transportation and assembly of large generators in wind turbines are complex due to their size and mass, requiring specialized cranes and posing challenges in maintaining precise air gaps between rotor and stator components, which increases costs and complexity.
Innovation Solution
A segmented generator design with annularly configured rotor and stator segments that can be transported and assembled individually, using a fastening system to maintain precise alignment and air gaps, allowing for easier handling and reduced crane requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If a large generator with diameter of 5m and mass of 150t is used, then the power generation capacity is improved, but the transportation complexity increases and road transport becomes impossible
Solution Approach 1:
The generator is divided into multiple segments that can be transported separately and assembled at the installation site. This segmentation allows each component to be small enough for standard road transport while the complete assembled generator achieves the required large power generation capacity of 150t mass and 5m diameter.
2Manufacturing precision
If the rotor and stator are disposed close to each other to minimize air gap, then the manufacturing precision is improved, but the ease of operation deteriorates due to difficulty in assembly and maintenance
Solution Approach 1:
The generator is segmented into modular components with standardized interfaces. The separation interfaces between segments provide access points that allow workers to reach and adjust the air gap between rotor and stator without requiring the entire generator to be disassembled, thus maintaining precision while improving operability.
Solution Approach 2:
The air gap is pre-adjusted and fixed at the manufacturing stage with high precision. During assembly and operation, the segmented design with accessible separation interfaces allows for minor adjustments and maintenance without requiring complete disassembly, preserving the pre-set precision while enabling ease of operation.
3Ease of operation
If specialized cranes are used for generator assembly, then the assembly capability is improved, but the cost increases
Solution Approach 1:
The generator is divided into smaller segments that can be handled by standard construction equipment rather than requiring specialized heavy-duty cranes. Each segment is sized to be manageable with conventional machinery, reducing equipment costs while still enabling assembly of the complete large-scale generator system.
Data Source
AI summary
The disclosure relates to a generator segment of a segmented generator, in particular of a permanently excited segmented rotary generator, of a wind turbine, comprising a rotor segment of a rotor, and a stator segment of a stator, wherein the rotor segment and the stator segment in an operation position are disposed so as to be mutually spaced apart in a radial direction by an air gap, and are disposed so as to be mutually spaced apart in an axial direction by an axial spacing; wherein the rotor segment and the stator segment are able to be disposed and/or displaced relative to one another along a rotation axis by the axial spacing, between an operation position and a transport position that is different from the operation position.