Flywheel Electromagnet System with Non-Rotating Shaft

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Solution Overview

Problem

Conventional flywheel systems face challenges in generating large amounts of electrical power directly due to dragging forces and precession issues, which reduce efficiency and cause noise and wear, limiting their ability to effectively use electromagnetic systems for power generation.

Innovation Solution

A flywheel electromagnet system with a non-rotating shaft and balanced electromagnetic forces is used to drive one or more rotors, employing a circular ring and nonferrous frames with external and internal permanent magnets, along with input driver coils to generate high-speed rotation and collect electrical power without a separate generator.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Power

If conventional flywheel systems use electromagnetic systems for power generation, then electrical power can be generated, but dragging forces and precession issues reduce efficiency and cause noise and wear

Engineering Contradiction:
Improveelectrical power generationVSAvoidefficiency
Core Design Contradiction:
PowerVSLoss of energy

Solution Approach 1:

The patent extracts the problematic iron core from the electromagnetic system by using permanent magnets mounted directly on the rotor. This eliminates the iron core that causes dragging forces and precession issues, allowing the rotor to spin freely while still generating electrical power through the interaction of permanent magnets with stator coils

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The patent replaces the conventional electromagnetic system with iron cores and electromagnets with a direct permanent magnet system. This substitution eliminates the mechanical dragging forces and precession problems associated with iron cores while maintaining the electrical power generation function through permanent magnet interaction with stator windings

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

2Power

If conventional flywheel systems use electromagnetic systems for power generation, then electrical power can be generated, but dragging forces and precession cause noise and wear

Engineering Contradiction:
Improveelectrical power generationVSAvoidnoise and wear
Core Design Contradiction:
PowerVSObject-generated harmful factors

Solution Approach 1:

The patent removes the iron core that generates harmful dragging forces, precession, noise, and wear. By mounting permanent magnets directly on the rotor without an iron core, the system eliminates the sources of mechanical friction and vibration that cause noise and component wear

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The patent converts the potential harm of magnetic interaction into a beneficial force by using permanent magnets to create controlled magnetic fields that drive the rotor without physical contact. The magnetic forces that could cause dragging are instead harnessed to provide smooth, contactless propulsion, eliminating wear and noise

Inventive Principle:
Principle #22Blessing in disguise (Convert harm into benefit)

3Ease of operation

If conventional flywheel systems use a single rotor with rotating shaft, then the system can operate, but precession causes shaking and reduces efficiency

Engineering Contradiction:
Improvesystem operationVSAvoidrotor efficiency
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The patent uses asymmetric positioning of permanent magnets on the rotor and corresponding stator coils to create a magnetic field configuration that eliminates precession. The asymmetric arrangement ensures that magnetic forces are distributed to maintain stable rotation without shaking or orientation changes of the rotational axis

Inventive Principle:
Principle #4Asymmetry

Solution Approach 2:

Instead of having the shaft rotate with the rotor as in conventional systems, the patent inverts the approach by keeping the shaft stationary and non-rotating while the rotor spins around it. This inversion eliminates precession-related shaking and improves reliability by decoupling the shaft from rotational dynamics

Inventive Principle:
Principle #13The other way round (Inversion)

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

This approach enables the generation of large amounts of electrical power efficiently by minimizing dragging forces and precession, allowing for high-speed rotation and effective power collection without the need for a separate generator, thus overcoming the limitations of conventional systems.

Implementation Method 1

applying an initial start-up force to rotate a flywheel rotor assembly, triggering an optical sensor switch positioned on an input driver plate assembly, and generating an electric current through the input driver coils of an input driver coil assembly to generate a magnetic field

Methodology Applied
Scientific EffectElectromagnetic induction: Electromagnetic Induction

Implementation Method 2

generating electric power by generating an electric current from the magnetic field of external permanent magnets positioned outwardly apart on a circular nonferrous outer frame

Methodology Applied
Scientific EffectElectromagnetic induction: Electromagnetic Induction

Data Source

PatentUS11218053B2Method and apparatus to drive a rotor and generate electrical power
Publication Date: 2022.01.04 FUNG WILLIAM P
  • US11218053B2 patent drawing
  • US11218053B2 patent drawing
  • US11218053B2 patent drawing

AI summary

An electromagnetic power generator device and a method thereof for using balanced electromagnetic forces to drive one or more flywheel rotor assemblies and one or more magnetic enahcement assemblies on a fixed shaft and generating large amount of electrical power are provided. The electromagnetic power generator device includes a non-rotating shaft attached to a support frame, at least one flywheel rotor assembly, and at least one input driver plate assembly which is coupled to the flywheel rotor assembly via the non-rotating shaft penetrating through a first centered hole of a bearing of the flywheel assembly and a second centered hole of the input driver plate assembly.