Flywheel Stabilization via Superconducting Magnetic Bearings
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Solution Overview
Problem
Existing energy storage devices face challenges in stabilizing flywheels without physical contact, requiring efficient cooling and precise magnetic interaction design for high temperature superconducting magnetic bearings, which are costly and complex to control.
Innovation Solution
An energy storage device with a housing containing a flywheel stabilized by high temperature superconducting magnetic bearings, utilizing a cryogenic cooling system with heat pipes and a self-contained cooling system to maintain low temperatures, and strategically positioned magnets for levitation and stabilization, allowing the flywheel to rotate frictionlessly in a vacuum.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If high temperature superconducting magnetic bearings are used for flywheel stabilization, then the flywheel can rotate without physical contact reducing friction losses, but the system requires complex cooling infrastructure and electronic control systems
Solution Approach 1:
The patent replaces traditional mechanical bearings with high temperature superconducting magnetic bearings that use magnetic fields instead of physical contact to support the flywheel, eliminating friction losses while requiring cooling to maintain superconducting state
Solution Approach 2:
The patent changes the temperature parameter to cryogenic levels to enable superconducting state in the magnetic bearings, which provides frictionless rotation but requires cooling infrastructure
2Loss of energy
If high temperature superconducting magnetic bearings are used, then frictionless rotation is achieved, but electronic monitoring and electromagnetic regulation systems are required
Solution Approach 1:
The patent substitutes electromagnetic fields for mechanical contact in the bearing system, using magnetic forces to levitate and stabilize the flywheel without physical support structures
Solution Approach 2:
The superconducting magnetic bearings are designed to be self-regulated through inherent electromagnetic field interactions, automatically maintaining stable levitation without requiring external electronic monitoring or control systems
3Reliability
If magnets are positioned at angles for optimal stabilization, then magnetic interaction efficiency is improved, but the manufacturing and assembly precision requirements increase
Solution Approach 1:
The patent applies different magnet orientations at specific locations around the flywheel assembly, with magnets positioned at calculated angles relative to the rotational axis to optimize magnetic field distribution and stabilization effectiveness
Solution Approach 2:
The patent employs asymmetric magnet positioning where magnets are oriented at specific non-uniform angles rather than symmetrically, creating optimized magnetic interaction patterns that improve stabilization while the asymmetric design may actually reduce sensitivity to manufacturing tolerances
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 provides stable, efficient, and cost-effective energy storage by maintaining low temperatures and precise magnetic stabilization, reducing energy losses and operational complexity, enabling high-speed rotation of the flywheel without physical contact.
Implementation Method 1
heat pipes coupled to a cryogenic generator for removing heat from the housing
Implementation Method 2
High temperature superconducting magnetic bearings are used for the rapid rotation of flywheels
Implementation Method 3
superconducting magnetic bearings can be self-regulated (by an electromagnetic field)
Implementation Method 4
at least one magnet coupled to the flywheel orientated at a first angle and at least one magnet coupled to the housing orientated at an angle substantially parallel to said first angle of orientation of the magnet coupled to the flywheel
Data Source
AI summary
At least one embodiment of the invention relates to an energy storage device comprising a housing, at least one flywheel disposed in the housing, and at least one stabilizing element disposed in the housing configured to stabilize the flywheel. There can be at least one cooling element for cooling a region interior of the housing to a preset temperature. In at least one embodiment, the stabilizing element comprises a magnet. In at least one embodiment the stabilizing element can be orientated at a position offset from a horizontal axis. In at least one embodiment the stabilizing element is orientated at a position offset from a vertical axis In at least one embodiment the stabilizing element is orientated at a position between a horizontal axis and a vertical axis. In at least one embodiment, the stabilizing element comprises at least one magnet coupled to the flywheel orientated at a first angle and at least one magnet coupled to the housing orientated at an angle substantially parallel to said first angle of orientation of the magnet coupled to the flywheel.