Capacitive Power Cable Strand Layout to Reduce Skin Effect Loss
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Solution Overview
Problem
Existing capacitive power transmission cables face inefficiencies due to the use of Litz wires and Milliken conductors, which are unsuitable for heavy-duty applications and have inadequate insulation, leading to significant skin effect and high conductive capacity loss.
Innovation Solution
A capacitive power transmission cable design utilizing a multiples of six layer structure with alternating sets of conductive strands, each set having contrasting insulation colors, and optionally bundled at ends for easy connection, to enhance capacitive relationship and reduce conductive capacity loss.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If Litz wires and Milliken conductors are used in capacitive power transmission cables, then the cable structure can be implemented, but the conductive capacity loss increases significantly due to skin effect and inadequate insulation
Solution Approach 1:
The conductor is divided into multiple individual strands rather than using solid conductors. Each strand is insulated separately, allowing current to distribute more evenly across all strands and reducing the skin effect. This segmentation enables the cable to maintain low conductive capacity loss while being manufacturable with standard insulation materials.
Solution Approach 2:
An insulating layer is introduced between adjacent conductive strands that are in capacitive relationship. This intermediary insulation prevents direct electrical contact while maintaining the capacitive coupling, thereby reducing energy loss due to leakage and improving the overall efficiency of power transmission.
2Ease of manufacture
If conventional cable structures are used, then manufacturing is straightforward, but power transmission loss over long distances increases
Solution Approach 1:
The cable employs a dynamic configuration where conductive strands are arranged in alternating capacitive sets with insulating layers between them. This dynamic structure allows the cable to function both as a conventional conductor and as a capacitive power transmission medium, enabling low loss transmission over long distances while maintaining manufacturing feasibility through standardized layering processes.
Solution Approach 2:
The cable combines conductive strands with insulating material layers in a composite structure. The insulating layers serve dual purposes: providing electrical isolation between capacitive sets and maintaining capacitive coupling. This composite approach reduces power transmission loss while keeping the manufacturing process compatible with existing cable production techniques.
3Volume of moving object
If strands are closely packed to maximize conductive capacity, then the cable size is minimized, but insulation effectiveness decreases leading to higher energy loss
Solution Approach 1:
The insulating layers are applied locally between specific strands that are in capacitive relationship, rather than uniformly throughout the entire cable cross-section. This localized insulation approach provides effective electrical isolation where needed to prevent energy loss, while minimizing the overall insulation material volume and keeping the cable size compact.
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 cable achieves low to zero loss power transmission over long distances by optimizing capacitive relationships between strands, improving insulation, and facilitating easy installation and connection.
Implementation Method 1
a capacitive power transmission cable comprising at least two sets of conductive strands, the sets of strands being insulated from each other and in capacitive relationship, the one with the other
Implementation Method 2
They reduce skin effect which would reduce the conductive capacity of a single round conductor with the same amount of conductive material per unit length
Data Source
AI summary
A capacitive power transmission cable, having at least two sets of conductive strands, the sets of strands being insulated from each other and in capacitive relationship, the one with the other: wherein the conductive strands are laid at least substantially in a multiples of six layer structure, with substantially equal numbers of strands of both sets; each layer has strands of one set alternating with strands of the other set; and the strands of the respective sets have different contrasting color.