Toroidal Inductor Mounting with Powdered Iron Core and Thermal Management
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Solution Overview
Problem
Conventional electromagnetic components, such as inductors and filters, face challenges in reducing size, weight, noise levels, and efficiency due to high core losses and electromagnetic radiation, particularly at high frequencies and in high-power applications.
Innovation Solution
The use of a toroidal inductor design with a pressed powdered iron alloy core and a winding configuration that minimizes electromagnetic emissions and core losses, combined with a vibration-isolated and temperature-controlled mounting system for efficient heat dissipation and reduced noise, addresses these challenges.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If conventional electromagnetic component designs are used, then inductance capacity can be achieved, but size and weight become excessively large
Solution Approach 1:
The patent changes the core material parameter from conventional iron to pressed powdered iron alloy, and modifies the winding configuration parameters to achieve reduced size and weight while maintaining inductance capacity. The toroidal geometry parameters are also optimized to improve space utilization and reduce overall component dimensions.
Solution Approach 2:
The patent employs composite material construction by combining pressed powdered iron alloy core with specifically configured windings, creating a composite electromagnetic structure that achieves higher inductance density per unit volume compared to conventional homogeneous designs.
2Power
If high-power applications are used, then power output increases, but heat dissipation becomes problematic
Solution Approach 1:
The patent transitions from planar or linear heat dissipation paths to three-dimensional heat management by utilizing the toroidal geometry's inherent volume utilization and creating multiple heat escape pathways through the core structure and winding arrangement, enabling efficient thermal management in high-power applications.
Solution Approach 2:
The pressed powdered iron alloy core acts as an intermediary thermal management element, providing both magnetic function and enhanced heat dissipation pathways, facilitating heat transfer from the windings to the surrounding environment through the distributed core structure.
3Speed
If high-frequency operation is implemented, then operational speed increases, but core losses and electromagnetic radiation increase
Solution Approach 1:
The patent changes the core material composition to pressed powdered iron alloy with specific particle size distributions and density characteristics that reduce eddy current losses at high frequencies. The winding configuration parameters are also adjusted to minimize parasitic capacitance and inductance that contribute to high-frequency losses.
Solution Approach 2:
The pressed powdered iron alloy core exhibits a porous or granular internal structure that naturally reduces eddy current paths compared to solid iron cores, thereby decreasing core losses at high operating frequencies while maintaining adequate magnetic permeability.
4Ease of operation
If conventional mounting methods are used, then installation is simple, but vibration and noise levels increase
Solution Approach 1:
The patent introduces vibration isolation elements as intermediary components between the inductor and mounting surface, these elements absorb and dampen mechanical vibrations while allowing for straightforward installation, thus reducing noise transmission without complicating the mounting process.
Solution Approach 2:
The mounting system employs composite construction combining rigid mounting brackets with flexible vibration-damping materials, creating a composite mounting assembly that provides both mechanical stability and vibration isolation in a single integrated solution.
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 configuration results in inductors that are approximately half the size and weight of conventional designs, with reduced noise levels and increased efficiency, enabling effective thermal management and high-frequency performance while maintaining specified inductance and impedance.
Implementation Method 1
an inductor or toroidal inductor is mounted on the inductor edge
Implementation Method 2
pressed powdered iron alloy core
Implementation Method 3
The inductor is mounted in a vertical orientation, where a center line through the center hole of the inductor runs along an axis that is about horizontal or parallel to a mounting surface
Implementation Method 4
temperature controlled... for efficient heat dissipation
Data Source
AI summary
Methods and apparatus according to various aspects of the present invention may be implemented in conjunction with a inductor mount mounting to a mounting surface. The inductor mount may comprise an inductor having a center opening, and a surface area encompassing all of a front face, a back face, an inner surface about the center opening, and an outer edge concentric about the center opening. The inductor mount may further include mounting hardware holding the outer edge of then inductor to the mounting surface. A cooling element moves air into contact with the front face, through the center opening, and around the outer edge of the inductor. In various embodiments, the mounting hardware contacts less that ten percent of the surface area of the inductor.