Ventilated Resonant Transformer Core for Lower Magnetic Loss
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Solution Overview
Problem
High magnetic loss between the transformer and secondary-side resonant inductance leads to increased temperature of the magnetic core, affecting its functionality.
Innovation Solution
A transformer design with a magnetic core and coils arranged to allow ventilation around the center pillars, enhancing heat dissipation through air circulation and potentially water cooling, which reduces magnetic loss and core temperature.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If a transformer with primary-side resonant inductance and secondary-side resonant inductance is adopted, then the required symmetrical resonant tank gain is achieved, but high magnetic loss occurs between the transformer and secondary side resonant inductance causing magnetic core temperature to rise
Solution Approach 1:
The magnetic core is divided into multiple independent pillars (first pillar, second pillar, third pillar, fourth pillar) with coils wound around different combinations of these pillars. This segmentation allows separate magnetic flux paths for primary and secondary resonant inductances, preventing magnetic loss between the transformer and secondary side resonant inductance while reducing magnetic core temperature rise.
2Device complexity
If coils are wound around center pillars of the magnetic core, then the transformer structure is compact, but heat dissipation is insufficient causing temperature increase
Solution Approach 1:
The patent introduces radial ventilation channels extending from the outer surfaces of the magnetic core pillars to the central cavity, creating a three-dimensional heat dissipation pathway. This dimensional approach allows heat to escape from both the outer surface and internal cavity, significantly improving heat dissipation while maintaining the compact transformer structure.
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 transformer achieves a 25% reduction in magnetic loss and a 4-degree Celsius decrease in average core temperature, improving operational efficiency and reliability.
Implementation Method 1
a first resonance coil, a primary coil, a secondary coil, and a second resonance coil. The first resonance coil surrounds the first center pillar and the second center pillar. The primary coil surrounds the third center pillar and the fourth center pillar. The secondary coil surrounds the third center pillar and the fourth center pillar. The second resonance coil surrounds the fifth center pillar and the sixth center pillar.
Implementation Method 2
A transformer design with a magnetic core and coils arranged to allow ventilation around the center pillars, enhancing heat dissipation through air circulation
Data Source
AI summary
Disclosed is a transformer, including a first resonance coil, a primary coil, a secondary coil, a second resonance coil, and a magnetic core which includes a first base, a second base, a third base, a magnetic cover, a first center pillar, a second center pillar, a third center pillar, a fourth center pillar, a fifth center pillar, and a sixth center pillar. The first and second center pillars extend from the first base towards the second base. The third and fourth center pillars extend from the second base towards the third base. The fifth and sixth center pillars extend from the third base towards the magnetic cover. The first resonance coil surrounds the first and second center pillars. The primary coil surrounds the third and fourth center pillars. The secondary coil surrounds the third and fourth center pillars. The second resonance coil surrounds the fifth and sixth center pillars.