Nested Magnetic Circuit Component for High-Current Applications
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Solution Overview
Problem
Existing magnetic components occupy large volumes and experience inefficiencies at high currents and frequencies, leading to issues like low field coupling and hot spots.
Innovation Solution
A magnetic circuit component design featuring a high-mass structure with a rod and a surrounding return path element, oriented about an axis to create a mirror-like magnetic field relationship, enabling efficient high-frequency and high-current operation while maintaining a small package size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If prior art magnetic structures are used, then magnetic circuit functionality is achieved, but the component occupies large volume with high height and large footprint
Solution Approach 1:
The magnetic circuit elements are nested concentrically about a central axis, with inner and outer magnetic paths arranged one inside the other. This nesting arrangement allows the magnetic flux to travel through multiple paths in a compact radial configuration, significantly reducing the component's footprint and height while maintaining effective magnetic coupling between windings.
Solution Approach 2:
The invention transitions from planar or linear magnetic path arrangements to a three-dimensional radial configuration centered on an axis. By utilizing radial dimensionality with concentric magnetic paths at different radii, the design achieves compact volume while preserving magnetic circuit functionality and field coupling efficiency.
2Productivity
If prior art magnetic structures are used, then basic magnetic circuit operation is achieved, but efficiency deteriorates at high currents and high frequencies due to low field coupling and hot spots
Solution Approach 1:
The magnetic circuit is segmented into multiple distinct paths including inner and outer magnetic paths, each providing separate flux return routes. This segmentation distributes the magnetic flux and current density across multiple pathways, preventing concentration of energy that would lead to hot spots, while improving overall field coupling efficiency at high frequencies.
3Area of stationary object
If compact package size is achieved, then smaller footprint and lower height are obtained, but magnetic circuit effectiveness may be compromised
Solution Approach 1:
The magnetic circuit elements are nested concentrically about a central axis, with inner and outer magnetic paths arranged one inside the other. This nesting arrangement allows the magnetic flux to travel through multiple paths in a compact radial configuration, significantly reducing the component's footprint and height while maintaining effective magnetic coupling between windings.
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 effectively handles high-frequency and high-current applications with low resistance, reducing inefficiencies and hot spots by ensuring efficient magnetic coupling and compact dimensions.
Implementation Method 1
current may be established to flow through the first and second magnetic elements in a direction indicated by arrow 104. That arrangement establishes a current flow through all surfaces of can 74 in a direction representatively indicated by arrows 106
Data Source
AI summary
An apparatus for establishing at least one turn for a magnetic circuit includes: (a) at least one first magnetic element oriented substantially about an axis generally between a first axial position and a second axial position; and (b) at least one second magnetic element coupled with at least one selected first magnetic element of the at least one first magnetic element generally at the second axial position. The at least one second magnetic element establishes at least one return magnetic path from the second axial position generally toward the first axial position. The at least one return magnetic path is generally about the axis.