Segmented Core Transformer for High Leakage Inductance
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Solution Overview
Problem
Conventional transformers face challenges in achieving high leakage inductance without increasing their overall dimensions, which is crucial for specific applications.
Innovation Solution
The transformer design incorporates a T-shaped first magnetic core and a U-shaped second magnetic core with strategically placed air gaps and winding assemblies, along with a spacing member, to enhance leakage inductance and transform efficiency while maintaining a compact size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the dimensions of the transformer are increased to achieve large leakage inductance, then the leakage inductance is improved, but the device size increases
Solution Approach 1:
The transformer core is segmented into multiple magnetic cores (first magnetic core with first pillar, second magnetic core with second pillars) arranged in a specific configuration. This segmentation allows the magnetic flux paths to be controlled independently, enabling high leakage inductance in a compact structure by creating intentional magnetic path separations without increasing overall transformer dimensions.
Solution Approach 2:
Air gaps are strategically positioned at specific locations (between first base and second pillars, and between second base and first pillar) to create localized magnetic field disruptions. This local modification of magnetic properties allows leakage inductance to be enhanced at critical points without requiring a proportional increase in the entire transformer volume.
2Reliability
If the transformer structure is optimized to increase leakage inductance, then the leakage inductance is improved, but the manufacturing complexity increases
Solution Approach 1:
Multiple magnetic cores and winding assemblies are merged into a single integrated transformer structure with a unified frame assembly. The first and second magnetic cores are positioned and fixed together with the winding assemblies to form a compact integrated unit, simplifying manufacturing and assembly while maintaining the complex internal magnetic path configuration needed for high leakage inductance.
Solution Approach 2:
A frame assembly serves as an intermediary structure that holds and positions the magnetic cores and winding assemblies in precise configurations. This frame structure facilitates manufacturing by providing a standardized mounting platform, reducing the complexity of assembling multiple components while enabling the complex internal geometry required for enhanced leakage inductance.
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 design effectively increases leakage inductance and transform efficiency by reducing bridge loss and allowing for a more compact transformer structure, suitable for various electronic applications.
Implementation Method 1
The transformer is primarily used to transform drive voltage from circuits
Implementation Method 2
an air gap is formed between the first base and the second pillars, an additional air gap is formed between the second base and the first pillar
Data Source
AI summary
A transformer is provided, including a first magnetic core, a second magnetic core, a first winding assembly, and a second winding assembly. The first magnetic core includes a first base and a first pillar disposed at the center of the first base. The second magnetic core includes a second base and two second pillars disposed on opposite ends of the second base. The second pillars are connected to the second base and extend toward the first base. The first pillar extends toward the second base and is disposed between the second pillars, and the length of the first pillar is substantially the same as the length of each of the second pillars. The first winding assembly surrounds the first pillar. The second winding assembly surrounds the first pillar. The first winding assembly and the second winding assembly are separated from each other.