Laminated Stator Axial Clamping Positioning
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Solution Overview
Problem
The traditional press fit installation of a stator into a housing can hinder optimal positioning of the PMG stator relative to other components, limiting flexibility and efficiency in generator assembly.
Innovation Solution
A stator core with radially extending legs and a fastener assembly that axially clamps core laminations together, allowing for improved positioning and mounting within a housing, enhancing structural rigidity and facilitating engagement with other components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a press fit arrangement is used to install the stator into the housing, then the stator can be securely mounted, but the positioning flexibility relative to other components is reduced
Solution Approach 1:
The stator core is segmented into multiple laminations that can be independently positioned and assembled. This segmentation allows for flexible positioning of the stator relative to other components while maintaining secure mounting through the cumulative clamping force on multiple laminations rather than a single press-fit interface.
Solution Approach 2:
The invention transitions from a traditional radial press-fit mounting approach to an axial clamping approach. By applying clamping force in the axial dimension rather than relying solely on radial interference fit, the stator achieves secure mounting while maintaining positioning flexibility in the radial and tangential dimensions.
2Ease of operation
If traditional press fit installation is used, then mounting is simple, but optimal positioning relative to other components cannot be achieved
Solution Approach 1:
The stator laminations are pre-assembled into a stacked configuration with positioning features before installation. This preliminary assembly allows the stator to be positioned optimally relative to other components during installation, while the fastener assembly secures this pre-positioned configuration without requiring complex adjustment procedures.
3Strength
If multiple core laminations are stacked together, then structural rigidity is improved, but assembly complexity increases
Solution Approach 1:
Multiple core laminations are merged into a single stacked assembly that functions as one structural unit. The fastener assembly combines multiple clamping functions into a single mechanism that secures all laminations simultaneously, reducing assembly complexity while maintaining the structural rigidity benefits of multiple laminations.
Solution Approach 2:
The fastener assembly serves multiple functions: it clamps the laminations together, positions the stator relative to the housing, and provides a mounting interface for the entire stator assembly. This multi-functionality reduces the number of separate components and assembly steps required, thereby reducing complexity while achieving structural rigidity.
Data Source
AI summary
A stator core for a generator includes a multiple of core laminations along an axis, each of the multiple of core laminations define at least one leg which extends in a radial direction from the axis.