Inductive Power Transfer for Hazardous-Area LED Modules

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Conventional power transfer systems fail to provide a safe and efficient means of transferring electrical power in hazardous environments, lack quick and easy connection/disconnection of loads, and do not mitigate LED degradation or control light emission direction.

Innovation Solution

A power transfer system using two current transformers and an induction loop connector that allows for safe power transfer, quick connection/disconnection, and encapsulation with oxidant access to enhance LED life, along with unidirectional LED modules for controlled light emission.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If conventional power transfer systems are used in hazardous environments, then electrical power can be transferred, but electrical sparks and current flow create potentially hazardous situations

Engineering Contradiction:

Improvesafety in hazardous environmentsVSAvoidelectrical sparks and current flow

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent replaces conventional electrical power transfer with a magnetic field-based induction system. The primary transformer generates a magnetic field that induces current in the secondary transformer, eliminating direct electrical contact and spark generation while maintaining power transfer capability in hazardous environments

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent introduces a magnetic field as an intermediary between the power source and load. The magnetic field serves as a mediator that transfers energy without requiring direct electrical connection, thereby preventing sparks and making the system safe for hazardous environments

Inventive Principle:

Principle #24Intermediary (Mediator)

2Ease of operation

If conventional power systems are used, then power can be transferred, but quick and easy connection and disconnection of loads is not facilitated

Engineering Contradiction:

Improveconnection and disconnection of loadsVSAvoidtime for maintenance and replacement

Core Design Contradiction:

Ease of operationVSLoss of time

Solution Approach 1:

The patent divides the power transfer system into separate primary and secondary transformer units that can be independently connected and disconnected. This segmentation allows the load (secondary transformer) to be quickly replaced or maintained without affecting the power source (primary transformer), reducing downtime and facilitating easy operation

Inventive Principle:

Principle #1Segmentation

3Reliability

If LEDs are encapsulated to protect them and provide photonic effects, then LED protection and desired photonic effects are achieved, but LED quality and service life degrade

Engineering Contradiction:

ImproveLED protection and photonic effectsVSAvoidLED service life

Core Design Contradiction:

ReliabilityVSDuration of action of stationary object

Solution Approach 1:

The patent encapsulates LEDs in an inert atmosphere (nitrogen or argon) to prevent oxidation and chemical degradation. This inert environment protects the LED while maintaining its photonic properties, thereby extending service life without sacrificing protection or performance

Inventive Principle:

Principle #39Inert atmosphere (Inert environment)

4Reliability

If encapsulated LED designs are used, then LED protection is provided, but control over light emission direction and prevention of bleeding is not achieved

Engineering Contradiction:

ImproveLED protectionVSAvoidlight emission direction control

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The patent applies different properties to different parts of the encapsulation system. The encapsulant material has specific optical properties (refractive index, transparency) that are optimized for protection while allowing controlled light transmission in desired directions, achieving both protection and directional control

Inventive Principle:

Principle #3Local quality

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 system ensures safe power transfer, facilitates easy maintenance, prolongs LED life by oxidant access, and controls light direction, addressing safety and performance issues in hazardous environments.

Implementation Method 1

Magnetic energy generated in the primary current transformer is transferred to the secondary current transformer via the induction loop connector so that the secondary current transformer generates electrical current

Methodology Applied

Scientific EffectElectromagnetic induction: Electromagnetic Induction

Data Source

PatentUS12486956B2Power and signal transfer system and LED design

Publication Date: 2025.12.02 HUTCHINS JULIAN MARC

AI summary

Embodiments relate to a power transfer system having two or more current transformers and induction loop connectors. The two or more current transformers include a primary current transformer, a secondary current transformer, or more current transformers. Power from the primary current transformer is transferred to the secondary current transformer. Further induction loops and current transformers can be added as needed. The secondary current transformer then supplies electric current to a load, or to other current transformers to provide electric current to a load(s). An addressable shorting bypass modulates power transfer to the load(s). The load can be a light source load or LED. The light source load or LED can be encapsulated with a pocket(s) having an agent to improve service life of the load or LED. Some embodiments of the LED can be structured as a unidirectional module configured to limited or prevent bleeding of light in other directions.