Wind Turbine Generator Stator Segment With Inclined Busbar Layout
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Solution Overview
Problem
In wind turbines, the length of the generator between the blade rotor and the tower needs to be maximized for active components like magnets and windings while minimizing the passive components such as support structures and electrical connections to optimize gravity load distribution.
Innovation Solution
The stator of the wind turbine generator features a body with inclined axial ends and a conical plate arrangement, where busbars are positioned along the inclined surface, reducing the axial extension of the passive components and allowing for easier access during mounting and maintenance, while segmented design with circumferentially extending segments provides structural stiffness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If busbars are arranged at the same radial distance from the axis, then the generator structure is simple, but the axial extension of the busbar arrangement increases the total length of the generator
Solution Approach 1:
The busbar arrangement transitions from a planar configuration at constant radial distance to a three-dimensional configuration along an inclined surface. The busbars are positioned at different radial distances from the axis, creating a compact arrangement that reduces axial extension while maintaining accessibility during mounting and maintenance operations
2Length of moving object
If the generator length is maximized, then the active length of magnets and windings increases, but the passive length for structure and electrical connections also increases
Solution Approach 1:
The inclined plate geometry repositions the busbar arrangement in three-dimensional space, allowing electrical connections to be made more compact axially. This reduces the passive length contribution to total generator length, thereby increasing the proportion of active length available for magnets and windings
3Length of stationary object
If busbars are arranged in a compact configuration, then the axial extension is reduced, but accessibility during mounting and maintenance may be compromised
Solution Approach 1:
The inclined surface configuration distributes busbars at different radial distances and axial positions, creating a compact overall arrangement while maintaining adequate spacing and accessibility. This three-dimensional layout allows maintenance personnel to access individual busbars easily during mounting and maintenance operations despite the reduced axial footprint
Data Source
AI summary
A stator of an electrical machine is provided including a body axially extending along the longitudinal axis between two opposite axial ends, the body radially extending perpendicular to the longitudinal axis between a radially inner surface and a radially outer surface, wherein at least one of the two opposite axial ends includes a plate inclined with respect to the longitudinal axis of an angle greater than 0° and lower than 90°.