Planar Transformer DC-DC Converter for Noise Reduction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing DC-DC converters for eco-friendly vehicles face challenges in stably supplying electric energy with good power conversion efficiency, particularly in reducing high voltage to low voltage while managing noise components effectively.
Innovation Solution
A DC-DC converter utilizing a planar transformer with a first and second planar transformer, where current is provided through different current paths to the primary winding coils, and a plurality of inductors connected in parallel, allowing for noise reduction and efficient voltage conversion without the need for additional noise removal inductors in the output device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If traditional DC-DC converter configuration is used with additional noise removal inductors, then noise can be effectively removed, but device complexity and size increase
Solution Approach 1:
The patent combines the noise removal function with the voltage conversion function by integrating inductors into the transformer structure. The first and second inductors are connected in parallel with the primary winding coils of the first and second planar transformers respectively, allowing the same component to perform both voltage transformation and noise filtering, thereby eliminating the need for separate noise removal inductors and reducing overall device complexity
Solution Approach 2:
The planar transformers are designed to serve multiple functions simultaneously: voltage reduction from high voltage to low voltage, and noise component removal. By making the transformer components multi-functional, the patent eliminates the need for additional dedicated noise removal components, thus reducing device complexity while maintaining effective noise filtering capability
2Object-affected harmful factors
If additional noise removal inductors are added to the output device, then noise filtering is improved, but manufacturing cost increases
Solution Approach 1:
The patent merges the noise filtering function into the existing transformer structure by connecting inductors in parallel with the primary winding coils. This integration eliminates the need for additional separate noise removal inductors in the output device, thereby reducing component count and manufacturing cost while maintaining effective noise filtering performance
3Loss of energy
If planar transformers with parallel current paths are used, then power conversion efficiency is improved, but device complexity increases
Solution Approach 1:
The patent divides the single transformer into two planar transformers (first and second planar transformers) with separate primary winding coils and inductors. This segmentation allows independent optimization of each transformer's current paths, enabling parallel current flow that reduces magnetic interference and improves power conversion efficiency. The segmented structure also facilitates modular assembly, partially offsetting the complexity increase through standardized manufacturing
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 enhances power conversion efficiency and stability, reduces component costs, and improves fuel efficiency by eliminating the need for large inductors, thereby minimizing the converter's size and cost while effectively reducing noise and maintaining high current handling.
Implementation Method 1
a transformer including a first planar transformer and a second planar transformer that reduce a voltage provided from the input device
Data Source
AI summary
A converter using a planar transformer includes an input device that receives a first voltage, a transformer including a first planar transformer and a second planar transformer that reduce the first voltage, and an output device that outputs the first voltage as a second voltage, wherein the first voltage is greater than the second voltage, and the input device provides a current to a primary winding coil of each of the first planar transformer and the second planar transformer through a first current path and a second current path in which current directions are different with each other, and includes a plurality of inductors connected in parallel with the primary winding coil of each of the first planar transformer and the second planar transformer.