Power Converter Filter Circuit Layout for Compact Noise Suppression
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Solution Overview
Problem
The challenge is to miniaturize power converters for electric and hybrid vehicles while maintaining or improving noise suppression functions, as components are increasingly compacted, leading to noise propagation issues.
Innovation Solution
A filter circuit device is designed with a first and second core member forming through holes, conductors passing through these holes, and terminals pressing opposing surfaces of the conductors to establish contact, incorporating capacitors for noise suppression. This configuration uses a small-size core and capacitors to effectively filter noise, reducing weight, size, and cost while maintaining noise removal capability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the power converter is miniaturized by gathering components closely together, then the size and weight are reduced, but noise propagation occurs between components
Solution Approach 1:
A filter circuit device is introduced as an intermediary component between power components (such as between the DC input and AC output, or between different power conversion stages). This filter includes capacitors and inductors that actively intervene to suppress noise propagation, allowing compact component arrangement while maintaining noise isolation through the filtering action of the intermediary circuit.
2Object-affected harmful factors
If traditional noise suppression measures are implemented, then noise propagation is suppressed, but the device size and complexity increase
Solution Approach 1:
The filter circuit device merges multiple functions into a single compact unit: noise filtering, voltage stabilization, and current regulation are combined in one integrated structure. The capacitors and inductors are arranged in a compact configuration that performs multiple noise suppression functions simultaneously, reducing the overall space required compared to separate noise suppression components.
Solution Approach 2:
The invention optimizes the electrical parameters (capacitance values, inductance values, and their arrangement) to achieve effective noise suppression with minimal component size. By carefully selecting and tuning these parameters, the filter circuit achieves high noise suppression performance in a compact form factor, avoiding the need for large traditional filter components.
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 solution enables a miniaturized power converter with enhanced noise suppression, achieving weight reduction, cost efficiency, and improved assembly efficiency while maintaining effective noise filtering performance.
Implementation Method 1
a capacitor; a first terminal configured to electrically connect the first conductor with the capacitor; and a second terminal configured to electrically connect the second conductor with the capacitor
Data Source
AI summary
A filter circuit device includes: first and second core members forming first and second through holes, respectively; a first conductor passing through the first and second through holes; a second conductor passing through the first and second through holes; a capacitor; a first terminal configured to electrically connect the first conductor with the capacitor; and a second terminal configured to electrically connect the second conductor with the capacitor. The first conductor from the first through hole to the second through hole and the second conductor from the first through hole to the second through hole have an opposing part between the first conductor and the second conductor. The first terminal presses an opposite surface of the first conductor, so as to be in contact with the first conductor. The second terminal presses an opposite surface of the second conductor, so as to be in contact with the second conductor.