Converter Head Cover With Segmented RIV Shielding for Easier Assembly

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Solution Overview

Problem

The manufacturing and assembly of high-voltage converter devices are complicated and costly due to the expensive and complex shielding toroids used for radio interference voltage, which are large, complex to manufacture, and require additional logistical efforts and assembly resources.

Innovation Solution

The RIV shielding device is replaced by a set of cylindrical, capsule-shaped elements distributed around the edge of the cover element, allowing for easy manufacturing and handling, and can be rotated to provide effective shielding while allowing access to attachment structures for easier assembly and transport.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a shielding toroid is used for RIV shielding, then effective radio interference voltage shielding is achieved, but manufacturing complexity and cost increase significantly

Engineering Contradiction:

ImproveRIV shielding effectivenessVSAvoidshielding toroid structure complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The continuous shielding toroid is segmented into multiple discrete shielding elements (at least three) that are distributed around the perimeter of the cover element. Each element has substantially the same shape and can be independently manufactured and positioned, transforming a single complex component into multiple simpler components that collectively provide equivalent shielding.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Multiple identical shielding elements are used instead of a single unique toroid structure. Each element is a copy of the others, allowing for standardized manufacturing processes, simplified production tooling, and easier replacement or adjustment, while maintaining the overall shielding effectiveness through their distributed arrangement.

Inventive Principle:

Principle #26Copying

2Reliability

If a shielding toroid is used for RIV shielding, then effective radio interference voltage shielding is achieved, but assembly complexity and logistical effort increase

Engineering Contradiction:

ImproveRIV shielding effectivenessVSAvoidassembly simplicity

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The shielding system is divided into multiple small elements that can be handled and positioned independently during assembly. This segmentation allows for easier transportation, simpler installation procedures, and the ability to assemble the shielding structure on-site without requiring special equipment or procedures for handling a large, complex toroid.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The shielding elements can be pre-assembled into a complete annular shielding structure around the cover element before final installation. This preliminary assembly simplifies the final installation step and ensures proper positioning and spacing of all elements before the converter device is fully erected.

Inventive Principle:

Principle #10Preliminary action

3Reliability

If a shielding toroid is used for RIV shielding, then effective radio interference voltage shielding is achieved, but manufacturing cost increases

Engineering Contradiction:

ImproveRIV shielding effectivenessVSAvoidmanufacturing cost

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

The shielding system is divided into multiple small elements that can be manufactured using simpler, more cost-effective processes. Each element requires less material and simpler forming operations compared to a single large toroid, reducing both material costs and manufacturing complexity while maintaining collective shielding effectiveness.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The shielding elements are designed as simple, inexpensive components that can be manufactured from standard materials using conventional processes. Their simplicity allows for cost-effective production and potential replacement if needed, unlike the expensive and complex shielding toroid.

Inventive Principle:

Principle #27Cheap short-living objects (Disposable)

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 simplifies the assembly and reduces costs by minimizing logistical efforts, component costs, and eliminating the need for additional lifting lugs, while maintaining effective radio interference shielding.

Implementation Method 1

an RIV shielding device that circumferentially surrounds the cover element for shielding radio interference voltage

Methodology Applied

Scientific EffectElectromagnetic shielding: Faraday Cage

Data Source

PatentUS11984247B2Cover unit for a converter head of a high-voltage converter device, converter head and high-voltage converter device

Publication Date: 2024.05.14 HSP HOCHSPANNUNGSGERTE GMBH

AI summary

A cover unit for a converter head of a high-voltage converter device includes a flat, preferably planar, cover element and an RIV shielding device peripherally surrounding the cover element for shielding radio interference voltage. The RIV shielding device is formed by a plurality of RIV shielding elements distributed peripherally on the edge of the cover element. The RIV shielding elements each have a substantially cylindrical shape, in particular a capsule shape. A corresponding converter head and a corresponding high-voltage converter device are also provided.