Segmented Flywheel Rotor Balancing for High-Speed Structural Integrity
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Solution Overview
Problem
Existing flywheel assemblies face issues with balance and structural integrity during high-speed rotations, leading to potential breakage due to imbalances and deviations in plate thickness.
Innovation Solution
A flywheel assembly comprising stacked plates with aligned teeth and holes, secured by shafts and adhesive filler material, ensuring the center of mass aligns with the rotational axis, and rods inserted through channels to maintain balance and structural integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional flywheel assemblies are used, then energy storage function is provided, but balance issues cause breakage during high-speed rotations
Solution Approach 1:
The flywheel is divided into multiple individual plates stacked together to form the rotor assembly. This segmentation allows each plate to be manufactured with precise thickness and dimensional control, and enables modular assembly that facilitates precise balancing of the entire rotor. The segmented structure also allows for easier replacement and adjustment of individual plates to maintain balance during high-speed rotation.
Solution Approach 2:
Holes are strategically positioned in specific plates at specific locations to adjust the center of mass of the rotor assembly. This local modification of mass distribution enables precise balancing of the flywheel, ensuring the center of mass aligns with the rotational axis during high-speed operation, thereby preventing breakage due to imbalance.
2Strength
If plates are stacked to form rotor, then structural integrity is improved, but deviations in plate thickness cause imbalance
Solution Approach 1:
The holes are positioned and sized in advance during the manufacturing process to compensate for expected variations in plate thickness. By performing this balancing adjustment beforehand, the rotor assembly is pre-balanced to account for manufacturing tolerances, ensuring that even with slight variations in plate thickness, the overall center of mass remains aligned with the rotational axis.
Solution Approach 2:
The position, size, and distribution of holes in various plates are adjusted as design parameters to compensate for plate thickness variations. By changing these geometric parameters, the center of mass of the rotor assembly can be precisely controlled to align with the rotational axis, overcoming the effects of manufacturing imprecision in individual plate thicknesses.
3Stability of the object's composition
If center of mass is aligned with rotational axis, then balance is improved, but manufacturing complexity increases
Solution Approach 1:
The rotor is segmented into multiple identical or similar plates with standardized hole patterns. This segmentation allows for modular manufacturing where plates can be produced using the same tooling and processes, reducing overall manufacturing complexity despite the need for precise balance. The modular nature also simplifies assembly and maintenance.
Solution Approach 2:
Instead of modifying the entire rotor structure to achieve balance, only local areas (specific plates) are modified with strategically positioned holes. This localized approach to balancing minimizes the increase in manufacturing complexity by focusing precision work only where needed, rather than requiring complex modifications to the entire assembly.
Data Source
AI summary
A flywheel assembly constituted of: a plurality of stacked plates, a first end plate of the plurality of plates defining a first end of a rotor and a second end plate of the plurality of plates defining a second end of the rotor; and a pair of shafts, each extending from a respective one of the first end and the second end of the rotor along a rotational axis of the rotor, wherein a perimeter of each of the first and second end plates exhibits a respective plurality of teeth.