Ground Shield Bridge for Multi-Phase EMI Protection
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Solution Overview
Problem
High voltage conductor cables face challenges in managing electromagnetic interference (EMI) effectively, particularly in multi-phase configurations, where existing shielding solutions are complex and inefficient.
Innovation Solution
The integration of a ground shield bridge configuration, where shield bridge conductors electrically connect the shielding of multiple cables directly, embedded in a polymer structure, provides a simplified and effective conductive path for EMI protection, allowing a single ground conductor cable to ground multiple cables, and is integrated with power devices for enhanced reliability and efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If traditional shielding solutions are used for high voltage conductor cables, then EMI protection is provided, but the construction becomes complex and inefficient
Solution Approach 1:
The patent merges multiple separate ground connections into a single unified ground conductor cable that serves multiple cables simultaneously. The ground shield bridge configuration integrates multiple cable shields and grounds them through a common bridge structure, reducing the number of separate grounding components and simplifying the overall shielding construction while maintaining effective EMI protection for all high voltage conductor cables.
2Object-affected harmful factors
If multiple separate ground connections are used for each cable shield, then EMI protection is provided, but the construction and installation become more complex
Solution Approach 1:
The ground conductor cable is designed with multi-functionality to serve multiple cables simultaneously. A single ground conductor cable performs the grounding function for multiple cable shields through the ground shield bridge configuration, eliminating the need for separate ground connections for each cable. This universal grounding solution simplifies manufacturing and installation processes while providing comprehensive EMI protection across all high voltage conductor cables.
3Object-affected harmful factors
If cable shields are connected through common ground, then EMI protection is achieved, but the conductive path is longer and less effective
Solution Approach 1:
The ground shield bridge acts as an intermediary structure that directly interconnects multiple cable shields at a common point. Instead of allowing shields to connect through long distributed ground paths, the bridge structure creates a localized direct connection point where all shields meet and are grounded simultaneously. This intermediary bridge structure significantly reduces the effective conductive path length for EMI currents compared to traditional distributed grounding approaches.
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 solution effectively alleviates EMI by creating a short and reliable conductive path between cable shields, simplifying the construction and improving the reliability and efficiency of EMI protection in high voltage conductor systems, especially in multi-phase configurations.
Implementation Method 1
a shield bridge conductor connected to the plurality of bonds and the ground conductor cable such that a short circuit is created between the plurality of cable shields using the shield bridge conductor
Implementation Method 2
each cable shield of the plurality of cable shields is configured to surround a respective one of the plurality of conductors
Data Source
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AI summary
Described herein are methods, devices, and systems for electrically connecting a plurality of cable shields using a shield bridge conductor embedded in a polymer structure. The shield bridge conductor may electrically connect the cable shields of two or more phase conductor cables and a ground conductor cable.