DC-Link EMC Filter Grounding Through Mechanical Mounting
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Solution Overview
Problem
Conventional EMC filters face challenges in reducing noise levels effectively due to inefficient ground connections, which can lead to increased component size, material usage, and reduced performance.
Innovation Solution
The EMC filter component eliminates dedicated ground conductors and instead uses a mechanical connection to leverage the ground connection of adjacent circuit components, resulting in shorter effective connector lengths, reduced space requirements, and improved performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate ground conductors are added to improve ground connection, then ground connection quality improves, but device complexity and material usage increase
Solution Approach 1:
The patent combines the mechanical mounting function and electrical ground connection function into a single integrated mounting connection. The mounting connection serves dual purposes: mechanically securing the EMC filter component while simultaneously providing the ground connection path, thereby eliminating the need for separate ground conductors and reducing overall system complexity.
Solution Approach 2:
The mounting connection is designed to perform multiple functions simultaneously: mechanical support, electrical grounding, and structural alignment. This multi-functional approach allows a single component to replace what would traditionally require separate elements, reducing both the number of parts and the complexity of assembly.
2Reliability
If separate ground conductors are added to improve ground connection, then ground connection quality improves, but component size and material usage increase
Solution Approach 1:
The mounting connection integrates both mechanical and electrical functions, eliminating the need for additional ground conductors. This merging of functions directly reduces material consumption by removing redundant conductor material while maintaining effective ground connection quality.
3Device complexity
If dedicated ground connections are eliminated, then device complexity and material usage decrease, but ground connection quality may deteriorate
Solution Approach 1:
The mounting connection is designed to universally serve both mechanical and electrical purposes. By making the mounting connection electrically conductive and integrating it into the ground path, the system maintains reliable ground connection quality without requiring dedicated ground connectors, thus reducing complexity while preserving performance.
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 approach leads to a significant reduction in noise levels, approximately 20 dB at 400 KHz, with improved mechanical stability and reduced component size and material usage, while maintaining effective electromagnetic compatibility.
Implementation Method 1
The mechanical connection is also provided to and configured for electrically connecting the filter circuit to ground potential of the external mounting location
Data Source
AI summary
In an embodiment an EMC filter component includes a first interface, a second interface, a filter circuit, a mechanical connection and a DC-Link capacitor as a circuit element, wherein the filter circuit is electrically connected between the first interface and the second interface, wherein the mechanical connection is configured for mechanically connecting the EMC filter component to an external mounting location, and wherein the mechanical connection is configured for electrically connecting the filter circuit to a ground potential of the external mounting location.