Power Entry Unit Detection for Multi-Source Safety
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Electrical power systems face issues when multiple power sources with different voltage or phase relationships are connected to a chain of receptacles, leading to potential electrical hazards and damage due to competing power sources, and existing systems lack mechanisms to prevent excessive receptacle connections.
Innovation Solution
An electrical power system with a first and second power entry unit, each equipped with a detection device that can sense the connection of multiple receptacles and other power entry units, using a multiconductor cable to manage power distribution, ensuring only one type of interconnecting cable is needed, and allowing for sequential or non-sequential connections while preventing power application to excessive receptacles or multiple power sources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple power entry units are connected to a chain of receptacles, then power distribution flexibility is improved, but electrical safety deteriorates due to competing power sources with different voltage or phase relationships
Solution Approach 1:
The detection device performs preliminary detection of multiple power sources before power distribution begins. The system detects the presence of multiple power entry units through communication signals exchanged over the receptacle chain, and preemptively prevents power application by controlling power entry unit operation based on detection results, avoiding electrical hazards before they occur
Solution Approach 2:
A detection device acts as an intermediary between multiple power entry units and the receptacle chain. This intermediary detects and communicates the presence of multiple power sources, coordinates their operation, and prevents harmful interactions by ensuring only one power source actively supplies power at any given time
2Reliability
If detection devices communicate presence information over the receptacle chain, then coordination of power sources is improved, but communication reliability deteriorates due to potential interference from electrical noise
Solution Approach 1:
The detection device continuously monitors and maintains communication about power source presence throughout operation. By maintaining continuous detection and communication rather than single-point checks, the system ensures reliable coordination despite intermittent electrical noise, as the ongoing communication stream allows for error detection and correction
Solution Approach 2:
The detection device implements feedback by continuously exchanging presence information between power entry units through the receptacle chain. This feedback mechanism allows each power entry unit to adjust its operation based on real-time information about other connected power sources, maintaining reliable coordination even in the presence of electrical interference
Data Source
AI summary
An electrical power system including a first power entry unit, at least one receptacle and a second power entry unit. The at least one receptacle is electrically connected to the first power entry unit. The second power entry unit is electrically connectable to the at least one receptacle. The first power entry unit and/or the second power entry unit include at least one detection device. Either the first power entry unit or the second power entry unit being a selected power entry unit and the remaining one being an other power entry unit. The detection device being configured to detect an attempted electrical power connection of both the selected power entry unit and the other power entry unit to the at least one receptacle.