Power Cable With Low-Dissipation Insulation for High-Speed Data
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current power wires and cables are not optimized for data transmission, with variable characteristic impedance, high signal attenuation, and poor electromagnetic protection, limiting their ability to efficiently transmit data at high rates and exposing the environment to electromagnetic disturbances.
Innovation Solution
A cable design featuring conductive wires with a strict geometric arrangement and an insulating sheath made of materials with low dielectric dissipation factor, combined with electromagnetic screens, to maintain constant impedance and reduce attenuation and electromagnetic interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If power cables use traditional insulating materials with high dielectric dissipation factor, then electrical insulation is adequate, but signal attenuation increases sharply beyond 40 MHz
Solution Approach 1:
The patent changes the dielectric material parameter by selecting materials with low dissipation factor (tan δ ≤ 0.05 at 100 MHz), such as cross-linked polyethylene or polypropylene, to reduce signal attenuation at high frequencies while maintaining insulation reliability
Solution Approach 2:
The patent uses composite cable construction combining conductive wires, low-dissipation insulating sheaths, and electromagnetic screens to achieve both low attenuation and high data transmission quality simultaneously
2Ease of manufacture
If conductive wires are positioned anarchically in trunking for power transmission, then installation is simple, but characteristic impedance becomes extremely variable and unpredictable
Solution Approach 1:
The patent segments the cable into distinct functional layers (conductive cores, insulating sheaths, screens, outer jacket) with each layer precisely positioned to maintain characteristic impedance while keeping overall installation simple
Solution Approach 2:
The patent applies different material properties and structural characteristics to different parts of the cable - rigid geometric positioning in the core for impedance control, flexible outer sheath for installation ease
3Device complexity
If power cables lack electromagnetic protection, then cable structure is simple, but sensitivity to surrounding electromagnetic disturbances increases and signal-to-noise ratio deteriorates
Solution Approach 1:
The patent introduces electromagnetic screens as intermediary elements between the conductive wires and the external environment, absorbing or shielding electromagnetic disturbances to protect the signal while adding controlled complexity to the cable structure
4Ease of manufacture
If power cables generate electromagnetic disturbances, then power transmission function is simple, but environmental protection is compromised and electromagnetic compatibility issues arise
Solution Approach 1:
The patent converts the potentially harmful electromagnetic radiation into a controlled feature by using screened cables that contain and direct electromagnetic fields, transforming environmental harm into controlled signal transmission while maintaining simple power delivery function
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 and constant signal attenuation over a wide frequency range, improved electromagnetic protection, and enhanced data transmission efficiency, supporting data rates exceeding 1 Mbits/s while meeting environmental and safety standards.
Implementation Method 1
the or each conducting wire, held in a strict geometric position within the outer sheath, comprises an electrically insulating sheath made of a material having a dielectric dissipation factor less than or equal to 5.10^-2
Implementation Method 2
one or more electromagnetic screen(s) are provided, the or each screen is arranged in a geometrically rigorous manner within the cable
Data Source
Figure 1a~1b
Figure 2
AI summary
The cable (1) has an electromagnetic shield (50), and an exterior sheath (10) defining a cavity in which electricity conducting wires (20, 30, 40) such as phase wire, neutral wire and ground wire, are arranged. The wires are surrounded by corresponding electrically insulating sheaths (21, 31, 41), and maintained in rigorous geometrical position, within the exterior sheath. Each electrically insulating sheath is made of material having a dielectric dissipation factor that is less than or equal to 5.10power-2 over a range of frequencies comprised between 1megaHertz and 100megaHertz.