Redundant Power Supply Continuity Check for Ground Fault Isolation
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Solution Overview
Problem
Existing power supply systems for moving bodies face challenges in determining whether a load connection is appropriate, leading to potential ground faults and inadequate power supply when different current paths become inseparably connected.
Innovation Solution
A power supply system that includes a first power source, a first current path, a signal generation unit, a second power source, a second current path, and a control unit, which executes a continuity test to determine if the first and second current paths are separable, ensuring appropriate load connection and power distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple current paths are used to supply power to redundant loads, then power supply reliability is improved, but the risk of ground faults and improper load connection increases
Solution Approach 1:
The system performs a continuity test before normal power supply operation to detect improper load connections in advance. The control unit checks whether the load is properly connected to both current paths, identifying ground faults or short circuits before they can affect power supply reliability.
Solution Approach 2:
The system continuously monitors the connection status of loads to multiple current paths through continuity testing. When a ground fault or improper connection is detected, the control unit receives feedback and can adjust power distribution or alert operators to maintain system reliability.
2Device complexity
If load connection is not verified, then system complexity is reduced, but power distribution accuracy deteriorates
Solution Approach 1:
A continuity test is performed as a preliminary step before normal power distribution begins. This test verifies that loads are correctly connected to both current paths, ensuring accurate power distribution without requiring complex continuous monitoring systems during operation.
Solution Approach 2:
The continuity test acts as an intermediary verification step between system assembly and operational power distribution. It provides a simple binary check (connection proper/improper) that ensures power distribution accuracy without adding complex control mechanisms.
Data Source
AI summary
A power supply system for moving body includes a first power source, a first current path, a second power source, a second current path. The first power source supplies electric power to a redundant load. The first current path connects the first power source and the redundant load. The second power source supplies electric power to the redundant load. The second current path connects the second power source and the redundant load.