Segmented Wind Turbine Generator Stator and Rotor Air Gap Pre-setting
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Solution Overview
Problem
The assembly and maintenance of large, segmented generators for wind turbines are challenging due to the difficulty in transporting and precisely setting the air gap between the rotor and stator, leading to increased effort and cost.
Innovation Solution
The design of segmented stator and rotor components with annular geometries and lattice structures allows for pre-setting of the air gap during production, enabling improved transportability and maintainability by arranging coil units on the stator segment carrier and magnet units on the rotor segment carrier, with dowel pins fixing them relative to each other.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If the generator is segmented into multiple components for transport, then transportability is improved, but assembly precision and air gap adjustment become more difficult
Solution Approach 1:
The air gap is pre-adjusted and fixed during the manufacturing process before segmentation. The stator and rotor segments are produced with pre-set air gap dimensions, eliminating the need for complex post-assembly adjustments. This preliminary action ensures precision is achieved before the components are divided for transport.
Solution Approach 2:
The generator is divided into multiple stator segments and rotor segments that can be transported separately. Each segment is manufactured with precise dimensional tolerances and pre-adjusted air gap specifications, allowing them to be reassembled with maintained precision despite being transported in separate pieces.
2Strength
If the generator components are made heavy to ensure structural integrity, then strength is improved, but transportability and assembly effort worsen
Solution Approach 1:
The generator is segmented into manageable components that maintain structural integrity through optimized design of each segment. The segmentation allows lighter individual components to be handled and assembled more easily, while the overall structure achieves required strength through proper joining of segments.
Solution Approach 2:
Structural reinforcement is applied locally at critical areas such as connection points and load-bearing regions, rather than uniformly throughout the entire structure. This allows the generator to achieve necessary strength with reduced overall weight and simplified assembly requirements.
Data Source
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AI summary
The invention relates to a stator segment (200) for a segmented stator, a rotor segment (300) for a segmented rotor, a generator segment (10) for a generator, a generator (1) for a wind turbine, a wind turbine (100) and a method for providing a generator (1). In particular, the invention relates to a stator segment (200) for a segmented stator of a generator (1) of a wind turbine (100), comprising a stator segment carrier (210) with a semi-annular geometry and a stator circumferential surface (222), in particular a stator outer circumferential surface, at least two coil units (230, 232, 234) arranged on the stator circumferential surface (222), in particular on the stator outer circumferential surface, of the stator segment carrier (210), wherein the coil units (230, 232, 234) each have a coil carrier plate (231) and at least one coil (260) arranged on the coil carrier plate (231).