Augmented Permanent Magnet System for Magnetic Levitation
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Solution Overview
Problem
Conventional high-speed transportation systems face significant friction and degradation issues due to bearing components, particularly at high speeds, which hinder efficiency and performance.
Innovation Solution
A tunable magnetic bearing system utilizing an augmented permanent magnet system with electromagnets and rare earth magnets, allowing for non-contact magnetic levitation and adjustable magnetic coupling between a vehicle and a guideway, minimizing friction and drag through orthogonal flux return paths.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If conventional wheels and bearings are used for high-speed transportation, then the system can achieve basic mobility and support, but friction and degradation increase significantly at high speeds
Solution Approach 1:
The patent replaces conventional mechanical wheel-bearing systems with a magnetic field-based levitation and propulsion system. Electromagnets and permanent magnets create magnetic forces that eliminate physical contact between the vehicle and guideway, substituting mechanical friction with magnetic field interactions. This substitution of mechanical systems with electromagnetic systems directly resolves the friction loss problem at high speeds.
Solution Approach 2:
The patent introduces magnetic fields as an intermediary between the vehicle and guideway. Instead of direct mechanical contact, magnetic fields serve as the mediating force for both levitation (reducing normal force and friction) and propulsion. The magnetic field acts as the intermediary that transfers force without physical contact, eliminating the harmful friction that plagues conventional high-speed transportation.
2Reliability
If electromagnetic suspension systems are used, then non-contact travel is achieved, but system complexity and control requirements increase
Solution Approach 1:
The patent combines levitation and propulsion functions into a single integrated magnetic bearing system. The same electromagnets and permanent magnets that create levitation forces also generate propulsive forces through controlled activation sequences. By merging these functions rather than using separate systems, the patent reduces overall system complexity while maintaining reliable non-contact travel.
Solution Approach 2:
The permanent magnets in the system provide a persistent magnetic field that continuously maintains levitation without requiring active control or energy input. This self-sustaining magnetic field reduces the control burden on electromagnets, which only need to provide periodic adjustments and propulsion. The permanent magnets essentially serve themselves by maintaining the magnetic coupling, reducing overall system complexity.
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 system achieves lower losses and improved efficiency by maintaining a stable magnetic levitation, reducing friction and drag, and enabling efficient high-speed travel while minimizing eddy currents and flux changes.
Implementation Method 1
The permanent magnet can generate a magnetic flux through the engine, the guideway and the air gaps
Implementation Method 2
The magnet assembly or engine can be magnetically coupled to, albeit in a non-contacting manner, the guideway
Implementation Method 3
The magnet assembly or engine can include at least one electromagnet, which allows for an adjustment of the magnetic field
Implementation Method 4
a magnetic field created by inductance, as demonstrated by a combination of Ampere's Law and Gauss' Law, which generate a force demonstrated by the Lorentz Law
Implementation Method 5
the attractive forces between the magnet assembly or engine and the guideway are generally balanced with the force of gravity on the vehicle, train, pod, etc.
Data Source
AI summary
A magnetic bearing system for controlling magnetic coupling between a mobile carriage and a guideway. The magnetic bearing system includes at least two engines successively arranged in a travel direction, wherein each of the at least two engines comprises at least two poles. The at least two engines have centerlines in the travel direction that are fixedly offset from each other, and the at least two engines are configured to be magnetically coupled to the guideway through air gaps.