Counter-Rotating Motor Slip Ring Layout for Vibration Reduction
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Solution Overview
Problem
Existing counter-rotating differential electric motor assemblies face issues with harmful resonances and energy inefficiencies due to the positioning of slip ring assemblies between oppositely rotating components, which are not feasible for medium to large motors, and require improved electrical power distribution to enhance thrust and efficiency.
Innovation Solution
A medium to large CR differential electric motor assembly with a central hollow shaft and oppositely rotating members, utilizing a slip ring assembly positioned either within or above the rotational members, featuring lubricated sintered/porous disks for efficient electricity transfer, reducing vibrations and waste, and enhancing rotational velocities through differential coupling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the slip ring assembly is positioned between the oppositely rotating rotational members and the mounting means, then electricity can be conveyed to the electromagnetic means, but the mass of the rotational members and electromagnetic means must be positioned at a distance from the mounting means, generating harmful resonances and vibrations in medium to large motors
Solution Approach 1:
The patent repositions the slip ring assembly from a conventional location between the rotational members and mounting means to a location above the rotational members. This spatial reconfiguration in the vertical dimension allows the rotational members to be positioned closer to the mounting means, reducing harmful resonances while maintaining electrical connectivity through the repositioned slip rings.
2Object-affected harmful factors
If the mass of the first and second rotational members and electromagnetic means is positioned close to the mounting means to prevent harmful resonances, then vibration is reduced, but the slip ring assembly cannot be positioned within or above the rotational members due to tangling with electrical wires
Solution Approach 1:
The patent extracts the slip ring assembly from its conventional position and relocates it above the rotational members. This separation allows the rotational members to be positioned close to the mounting means for reduced vibrations, while the electrical wire tangling problem is resolved by having the wires route through the hollow central shaft to the repositioned slip rings above, avoiding interference with the rotating components.
3Device complexity
If a solid central shaft is used with the slip ring assembly positioned between the rotational members and mounting means, then the structure is simple, but the rotational members must be positioned at a distance from the mounting means, generating harmful resonances
Solution Approach 1:
The patent maintains the simple solid central shaft structure but repositions the slip ring assembly above the rotational members rather than between them. This spatial reconfiguration in the vertical dimension allows the rotational members to be positioned close to the mounting means, eliminating harmful resonances while preserving the structural simplicity of the solid shaft design.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution effectively reduces harmful vibrations, increases thrust, and enhances energy efficiency by minimizing energy waste and heat production, while maintaining the same space allocation as traditional motors, with improved battery life and mechanical power output.
Implementation Method 1
featuring lubricated sintered/porous disks for efficient electricity transfer
Implementation Method 2
featuring lubricated sintered/porous disks for efficient electricity transfer
Implementation Method 3
electromagnetic means to power the rotation associated with the first and second rotational members
Data Source
AI summary
A rotational slip ring assembly for an improved counter-rotating (CR) differential electric motor assembly is utilized to power an aircraft vehicle or fan for moving a gas and includes two oppositely rotating propellers that may be mounted to horizontal flight and vertical lift-off aircraft or a fan housing in spaces similar in size to mounting spaces for traditional motors having only one propeller and includes a hollow central shaft and slip ring assembly that is mounted either within, slight above, or total above oppositely rotating components and around the hollow central shaft.