Oscillating Coil Induction Generator for Low-Noise Energy Conversion
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Solution Overview
Problem
Existing induction generators face inefficiencies due to the need to move a heavy magnet system and the requirement for complete magnetic polarity reversal, leading to mechanical losses and unwanted resonance oscillations, which reduce energy conversion efficiency and increase noise.
Innovation Solution
The induction generator design moves the coil instead of the magnet system, ensuring maximum exposure to the magnetic field, and eliminates the need for complete polarity reversal, using a spring element to cause oscillating movement of the coil within an annular air duct, thereby reducing resistance losses and mechanical stress.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If the magnet system is moved for energy conversion, then electrical energy can be generated, but the heavy mass requires significant force and causes mechanical losses
Solution Approach 1:
The patent inverts the conventional approach by moving the coil instead of the magnet system. The coil assembly with permanent magnets is moved relative to the stationary coil windings, reversing the traditional roles of moving and stationary components. This inversion reduces the mass of the moving part while maintaining electromagnetic induction functionality.
Solution Approach 2:
The patent replaces the mechanical movement of heavy magnet systems with an oscillating coil assembly driven by minimal mechanical input. The spring element provides the necessary oscillation without requiring heavy mechanical actuators, substituting complex mechanical drive systems with a simple elastic oscillation mechanism.
2Power
If complete magnetic polarity reversal is implemented, then electrical energy generation is achieved, but mechanical losses and resonance oscillations increase
Solution Approach 1:
The patent implements partial magnetic polarity reversal by oscillating the coil assembly through a limited angular range rather than completing full 360-degree rotations. The spring element naturally limits the oscillation amplitude, achieving sufficient electromagnetic induction without the excessive mechanical action required for complete polarity reversal in conventional systems.
Solution Approach 2:
The patent employs periodic oscillation of the coil assembly driven by the spring element. This periodic motion continuously reverses magnetic polarity through repeated oscillations rather than single complete reversals, maintaining energy generation while reducing mechanical stress and resonance issues associated with abrupt complete reversals.
3Loss of energy
If the coil is moved to reduce the mass of moving parts, then mechanical losses are reduced, but ensuring maximum magnetic field exposure becomes more complex
Solution Approach 1:
The patent nests the permanent magnets within the coil assembly, with the magnets positioned inside the stationary coil windings. This nested configuration ensures that the moving permanent magnets are always surrounded by the stationary coils, maximizing magnetic field exposure throughout the oscillation range without requiring complex external magnetic circuit arrangements.
Solution Approach 2:
The patent transitions from linear or radial magnetic field configurations to a three-dimensional nested arrangement where permanent magnets oscillate within the volume enclosed by stationary coils. This spatial arrangement in multiple dimensions ensures comprehensive magnetic field exposure during oscillation while maintaining a compact structure.
4Volume of moving object
If a flat design is implemented for wall switches, then installation space is reduced, but mechanical deflection of force introduction becomes necessary
Solution Approach 1:
The spring element serves multiple functions simultaneously: it acts as the oscillation drive mechanism, provides mechanical deflection for force introduction, and serves as part of the magnetic circuit. This multi-functionality eliminates the need for separate mechanical deflection components, maintaining the flat design while achieving the necessary mechanical action.
Solution Approach 2:
The patent merges the oscillation drive mechanism with the force introduction mechanism by using the spring element to directly couple user input with coil oscillation. This combination integrates multiple mechanical functions into a single element, reducing overall device complexity while maintaining the compact flat form factor required for wall switch applications.
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 design enhances energy conversion efficiency, reduces noise, extends the generator's lifespan, and eliminates the need for complex gearing, resulting in a compact, high-efficiency electromechanical energy converter suitable for autonomous radio systems.
Implementation Method 1
the spring element is designed to cause an oscillating movement of the coil in the air duct transverse to a magnetic flux of the permanent magnetic field within the air duct in response to a deflection of the coil
Data Source
Figure 1
Figure 2A~2B
Figure 2C~2D
AI summary
The invention proposes an induction generator (200; 301) having a magnet arrangement (204; 304) for generating a permanent magnetic field, an annular coil (206; 306), a spring element (228; 328) and an air channel (212; 312) penetrated by the permanent magnetic field, wherein said magnet arrangement (204; 304) comprises a first pole section (208; 308), a section pole section (210; 310) and a magnet (214; 314) arranged between said first pole section (208; 308) and said second pole section (210; 310), said coil (206; 306) being connected to said spring element (228; 328) and being arranged in said air channel (212; 312) in such a way that it can move, and the spring element (228; 328) being designed to bring about an oscillation movement (224) of the coil (206; 306) in the air channel (212; 312) transversely to a magnetic flux (222; 322) of the permanent magnetic field within the air channel (212; 312) in response to displacement of the coil (206; 306), characterized in that the air channel (212; 312) has an annular shape and is designed to fully accommodate the annular coil (206; 306).