Stator Magnetic Sheet Segmentation for Mass Reduction
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Solution Overview
Problem
Rotating electrical machines face challenges in reducing mass while maintaining optimal electrical and mechanical characteristics, as methods like replacing materials or reducing material volume compromise performance.
Innovation Solution
The design incorporates a stator magnetic sheet with a fixation zone featuring indented openings on the external periphery to accommodate connecting means, allowing for material removal without compromising rigidity or magnetic flux, using tie rods or bars with corresponding hole shapes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If material volume of the stator is reduced to decrease mass, then mass is reduced, but electrical characteristics deteriorate
Solution Approach 1:
The stator magnetic sheet is segmented into functional zones: a fixation zone with openings for connecting means and a magnetic flux zone with preserved integrity. This segmentation allows selective material removal in non-critical areas while maintaining magnetic performance in essential zones.
Solution Approach 2:
Different zones of the magnetic sheet have different structural qualities: the fixation zone contains openings to reduce mass, while the magnetic flux zone maintains full material density and continuous magnetic paths to preserve electrical characteristics. This local differentiation resolves the contradiction between mass reduction and performance maintenance.
2Weight of moving object
If material volume of the stator is reduced to decrease mass, then mass is reduced, but mechanical strength deteriorates
Solution Approach 1:
The structural function is separated from the magnetic function by creating distinct zones: the fixation zone with openings handles mechanical assembly requirements, while the reinforced zones with preserved material continuity maintain mechanical strength and magnetic performance.
Solution Approach 2:
The magnetic sheet exhibits local quality variations with reinforced zones containing continuous magnetic paths and sufficient material thickness to maintain mechanical strength, while the fixation zone contains openings for mass reduction. This localized differentiation allows mass reduction without compromising overall structural integrity.
3Weight of moving object
If material volume of the stator is reduced to decrease mass, then mass is reduced, but magnetic flux deteriorates
Solution Approach 1:
The magnetic sheet is divided into a fixation zone where material can be removed and a magnetic flux zone where material continuity is preserved. This segmentation ensures that magnetic flux paths remain intact while allowing mass reduction in non-magnetic areas.
Solution Approach 2:
The magnetic sheet has different local qualities: the fixation zone contains openings to reduce mass, while the magnetic flux zone maintains full material density and continuous magnetic paths. This local differentiation preserves magnetic flux while achieving mass reduction goals.
Data Source
AI summary
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