Segmented Core Caps for Toroidal Transformers
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Toroidal transformers are more labor-intensive and expensive to produce due to their continuous strip core design, which hinders automation and increases manufacturing time, despite offering advantages in size, weight, efficiency, and quiet operation compared to E-I laminate transformers.
Innovation Solution
The introduction of segmented or modular electrically insulating core caps made from materials like nylon, which snap together to form annular or semi-annular caps, providing double-wall insulation and allowing direct cooling, reducing the need for center fill epoxy and mounting washers, and enabling efficient winding with standard equipment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If a continuous strip core design is used in toroidal transformers, then size, weight, efficiency, and quiet operation are improved, but manufacturing labor intensity and production cost increase
Solution Approach 1:
The core cap is divided into multiple segments (typically two half-caps) that can be separately manufactured and then assembled around the toroidal core. This segmentation allows the core and caps to be manufactured independently using automated processes, eliminating the need for manual assembly of the entire core structure and significantly improving production efficiency while maintaining the continuous strip core's performance benefits
2Use of energy by moving object
If a continuous strip core design is used in toroidal transformers, then size, weight, efficiency, and quiet operation are improved, but manufacturing labor intensity and production cost increase
Solution Approach 1:
Dividing the core cap into separate manufacturable segments that can be produced using automated molding processes, then assembled around the core with simple fastening mechanisms, transforming a previously labor-intensive manual process into an automated manufacturing workflow
Solution Approach 2:
The core cap segments incorporate localized insulation properties at specific areas where windings contact the core, providing targeted electrical isolation where needed while maintaining the overall continuous strip core structure's efficiency and performance characteristics
3Device complexity
If traditional single-layer insulation is used in toroidal transformers, then device complexity is reduced, but leakage current increases
Solution Approach 1:
The core cap segments provide localized double-layer insulation at the interface between the windings and the core, creating targeted electrical isolation zones that reduce leakage current precisely where it occurs most, while maintaining overall structural simplicity
Solution Approach 2:
The core cap is constructed from composite materials that combine electrical insulation properties with mechanical structural integrity, creating a multi-functional component that provides both insulation and structural support while reducing leakage current through its composite nature
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 segmented core caps reduce leakage current, facilitate easier winding, and enhance cooling, resulting in a lighter, smaller, and more efficient toroidal transformer with reduced production costs while maintaining the benefits of toroidal transformer design.
Implementation Method 1
segmented or modular electrically insulating core caps made from materials like nylon
Implementation Method 2
allowing direct cooling
Data Source
AI summary
A modular toroidal transformer core cap system, including a plurality of cap segments, wherein each respective cap segment further includes first and second spaced elongated wall members, first and second connector members connected to the respective first and second elongated wall members, and a generally flat panel member connected to and extending between the first and second elongated wall members. The first and second wall members are disposed at a predetermined angle relative one another and the first and second elongated wall members and the panel member are electrically nonconducting. An integral number of cap segments may be joined together to define an annular core cap.