Magnetic Gearbox With Variable Flux Pole Members
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Solution Overview
Problem
Traditional magnetic gearboxes are limited by a fixed gear ratio, requiring dismantling to change the pole members to alter the gear ratio, which is inefficient and inflexible.
Innovation Solution
Incorporating pole members with coils and switches that can be configured between open circuit and short circuit or variable impedance to dynamically adjust the magnetic flux and gear ratio between the inner and outer rotors, allowing for variable gear ratios without physical modification.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional magnetic gearboxes use fixed pole members to provide a desired gear ratio, then the gear ratio is stable and reliable, but the gear ratio cannot be changed without dismantling the arrangement
Solution Approach 1:
The pole members are transformed from fixed static structures to dynamic controllable elements through the integration of coils and switches. Each pole member can independently adjust its magnetic flux by switching the coil circuits between open and closed states, enabling dynamic gear ratio adjustment without physical dismantling. This converts a static magnetic gearbox into a dynamically adjustable system.
Solution Approach 2:
The invention changes the magnetic flux parameter of pole members by controlling the electrical state of coils. By switching coils between open circuit (maximum flux) and short circuit (minimum flux) configurations, the magnetic flux through pole members is dynamically adjusted, which directly changes the gear ratio. This parameter-based control enables continuous gear ratio variation without mechanical modification.
2Adaptability or versatility
If pole members are made stationary with laminated ferromagnetic material to modulate magnetic field, then the magnetic field modulation is effective, but the system lacks flexibility for gear ratio changes
Solution Approach 1:
The invention replaces the traditional mechanical method of changing gear ratios (which requires physical dismantling and replacement of pole members) with an electrical control system. Switches and coils provide an electrical mechanism to adjust magnetic flux and gear ratio, eliminating the need for mechanical disassembly and significantly reducing the time required for gear ratio changes.
Solution Approach 2:
The coils are pre-installed on the stationary pole members, with switches positioned to control each coil circuit. This preliminary configuration allows immediate gear ratio adjustment by simply switching the electrical circuits, without requiring any physical reassembly or reconfiguration of the magnetic gearbox structure.
3Adaptability or versatility
If switches control coils to alter magnetic flux for gear ratio adjustment, then gear ratio flexibility is improved, but the device complexity increases
Solution Approach 1:
The stationary pole members serve multiple functions: they provide the ferromagnetic path for magnetic flux, support the coils for flux modulation, and act as the structural framework for the magnetic gearbox. The coils themselves serve dual purposes by both modulating magnetic flux for gear ratio control and potentially generating electrical power through electromagnetic induction during rotor rotation.
Solution Approach 2:
The invention merges the functions of the stationary pole members with the control mechanism by integrating coils directly onto the pole members. This combination eliminates the need for separate external control devices and reduces the overall system complexity by consolidating multiple functions into unified components.
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
Enables flexible adjustment of gear ratios and enhanced torque transfer capabilities, with the option to generate electrical power and provide braking, improving the efficiency and adaptability of the gearbox system.
Implementation Method 1
at least one pole member comprising a coil and a switch to control the coil to alter the magnetic flux of that pole member
Implementation Method 2
the coils can generate electrical power by mechanically driven rotation of the inner rotor and/or the outer rotor
Implementation Method 3
an outer rotor and an inner rotor with a plurality of pole members in between... Turning one rotor causes the other rotor to rotate in the reverse direction
Data Source
AI summary
Magnetic gearboxes an inner rotor and an outer rotor are known with pole members between them. However, these gearbox arrangements generally have a fixed gear ratio between the rotors. By provision of pole members with coils between them and associated switches to adjust the magnetic flux modulation capacity between the rotors it is possible to create open circuit, closed circuit and variable impedance configurations which will relatively passively adjust the magnetic flux modulation capacity or by presenting a voltage to the coils or drawing a voltage from the coils to more actively adjust the magnetic flux modulation capacity across the arrangement. In such circumstances a wider range of gear ratios is achieved as well as the capability with regard to localized electrical power generation through the gearbox arrangement or electro magnetic braking achieved upon the gear box as required.