High-Voltage Insulator Wireless Power Resonant Circuits

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Solution Overview

Problem

Existing solutions for powering electronic circuits in high voltage networks face challenges such as limited autonomy, economic constraints due to maintenance requirements, and costly galvanic isolation, especially when using battery-powered or energy collector-based systems, which are often inappropriate for direct current and inefficient in energy transfer.

Innovation Solution

A high-voltage electrical insulator with a wireless electrical power transmission device using resonant circuits to transmit alternating power from a ground potential, with windings spaced along the axis and magnetically coupled to ensure efficient energy transfer while maintaining galvanic isolation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If battery-powered electronic circuits are used in high voltage networks, then galvanic isolation is achieved, but maintenance operations are required regularly due to limited battery autonomy

Engineering Contradiction:

Improvegalvanic isolationVSAvoidbattery autonomy

Core Design Contradiction:

ReliabilityVSDuration of action of moving object

Solution Approach 1:

The patent replaces the mechanical/chemical battery system with a wireless electromagnetic power transmission system. The insulator incorporates a wireless power receiver that captures electromagnetic energy from the high voltage conductor through electromagnetic induction, eliminating the need for batteries and their periodic replacement while maintaining continuous galvanic isolation.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The insulator becomes self-powered by harvesting electromagnetic energy directly from the high voltage conductor it is attached to. The wireless power reception system continuously draws energy from the conductor's electromagnetic field, allowing the insulator's electronic circuits to operate autonomously without external maintenance or battery replacement.

Inventive Principle:

Principle #25Self-service

2Use of energy by moving object

If energy collectors are used to power electronic circuits from high voltage equipment, then power supply is achieved, but sufficient energy collection is not possible when the conductor does not traverse sufficient current

Engineering Contradiction:

Improvepower supplyVSAvoidenergy quantity

Core Design Contradiction:

Use of energy by moving objectVSQuantity of substance

Solution Approach 1:

The patent employs resonant electromagnetic induction at specific frequencies to dramatically enhance energy transfer efficiency. By tuning the wireless power reception system to resonate with the electromagnetic field of the conductor, the system can extract sufficient energy even from conductors carrying relatively low currents, overcoming the limitation of conventional energy collectors.

Inventive Principle:

Principle #35Parameter changes

3Reliability

If galvanic isolation components are sized to handle high voltage, then safety is improved, but cost becomes prohibitive

Engineering Contradiction:

ImprovesafetyVSAvoidcost

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

The patent replaces expensive physical galvanic isolation barriers with a magnetic coupling-based wireless power transmission system. The primary and secondary windings are magnetically coupled through the insulator body, providing galvanic isolation through magnetic field coupling rather than requiring thick, expensive insulating barriers, thereby reducing manufacturing costs while maintaining safety.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

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 enables efficient, compact, and cost-effective energy transfer between electronic circuits and power supplies with different potentials, reducing maintenance needs and enhancing transmission efficiency by utilizing resonant frequencies to minimize component size and distance.

Implementation Method 1

A primary winding passes through the insulator along its axis and connects its input to its output. The primary winding is surrounded by an insulating sleeve. A secondary winding surrounds the insulating sleeve.

Methodology Applied

Scientific EffectElectromagnetic induction: Electromagnetic Induction

Implementation Method 2

The windings of the various resonant circuits are advantageously spaced from each other along the axis of the insulator

Methodology Applied

Scientific EffectMagnetic coupling: Magnetic Field

Implementation Method 3

Methodology Applied

Scientific EffectResonance: Resonance

Data Source

PatentEP3394862B1High-voltage electric insulator

Publication Date: 2020.01.01 SUPERGRID INSTITUTE SAS

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AI summary

The invention relates to a high-voltage electric insulator (1) comprising an elongate insulating element (11) that extends along an axis and has first and second ends (117, 118) at a distance from each other along said axis, and further comprising at least first and second resonant circuits (122, 123) that are galvanically insulated from each other by the insulating element (11), the first and second resonant circuits each comprising at least one winding extending about the axis, said windings being at a distance from each other along the axis and being magnetically coupled.