Autonomous Load Unit Switches for Short Circuit Isolation
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Solution Overview
Problem
Existing supply systems for electrical voltage fail to provide adequate protection against short circuits, leading to the collapse of both supply paths and disruption of voltage to all connected electrical loads without additional protective circuitry.
Innovation Solution
A supply system with autonomous electrical load units, each equipped with a switch that can independently drive the switch to decouple from the supply path in case of a short circuit, allowing adjacent units to continue receiving voltage and localizing the failure, thus eliminating the need for a second supply path.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a second supply path is added to protect against short circuits, then reliability improves, but device complexity increases
Solution Approach 1:
The supply system is segmented into multiple independent electrical load units, each with its own switch. This segmentation allows individual units to be isolated in case of failure, providing protection without requiring a complete second supply path. Each unit operates independently, so a short circuit in one unit does not affect others.
Solution Approach 2:
Each electrical load unit is equipped with an autonomous switch that can detect faults and open automatically without external control. This self-service capability provides automatic protection against short circuits, eliminating the need for complex centralized protection systems or second supply paths.
2Reliability
If electrical load units are connected in series with individual switches, then failure protection improves, but device complexity increases
Solution Approach 1:
Each switch is integrated into its corresponding electrical load unit and operates autonomously based on local fault detection. The switch opens automatically when a short circuit is detected in its own unit, without requiring communication with or control from other units. This eliminates complex centralized control systems while providing effective failure protection.
3Ease of operation
If autonomous switch control is implemented in each load unit, then ease of operation improves, but device complexity increases
Solution Approach 1:
Each electrical load unit contains all necessary components (switch, detection circuitry) to autonomously detect faults and respond by opening the switch. This distributed self-service approach simplifies operation since each unit independently manages its own protection without requiring complex inter-unit communication or centralized control systems.
Data Source
AI summary
The invention relates to a supply system (20) for supplying electrical voltage. The supply system (20) comprises at least one voltage supply (21), which has a voltage source (22), and at least two electrical load units (23). The electrical load units (23) each have a first input (24), a second input (25) and an electrical load (38), each of the electrical load units (23) has a switch (26), which is arranged between the first and the second input (24, 25), at least one electrical load unit (23) is electrically coupled to the voltage supply (21), the electrical loads (38) are electrically connected in parallel, and each of the electrical load units (23) is configured to autonomously control the associated switch (26). The invention further relates to a method for operating a supply system (20).