Redundant Power Supply Circuit Layout for Short-Circuit Isolation
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Solution Overview
Problem
Existing power supply systems lack redundancy, which can lead to failure when one component fails, disrupting power supply to load devices.
Innovation Solution
A power supply system with multiple power supply circuits and connection devices that connect positive and negative sides of adjacent circuits, allowing for redundancy by isolating and rerouting power supply when abnormalities occur, using switches and relays to prevent overcurrent and short circuits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If power supply circuits are connected in parallel to increase redundancy, then reliability is improved, but the risk of short circuits and harmful effects increases
Solution Approach 1:
The connection circuit is segmented into multiple independent connection devices (first connection device on positive side, second connection device on negative side) distributed at different locations. This segmentation allows isolated control of each connection point, enabling the system to maintain power supply redundancy while limiting the propagation of short circuits to specific segments only.
Solution Approach 2:
Connection devices act as intermediary components between power supply circuits and load devices. These intermediaries include protective mechanisms that can detect abnormalities and interrupt current flow, preventing direct short circuits between parallel-connected power supplies while maintaining the redundant configuration.
2Device complexity
If connection devices are placed close together to simplify wiring, then device complexity is reduced, but the ability to isolate abnormalities decreases
Solution Approach 1:
Connection devices are strategically segmented and placed at different locations within the system rather than clustered together. The first connection device connects to the positive side at one location while the second connection device connects to the negative side at another location, creating spatial separation that enables abnormality isolation while maintaining manageable wiring through structured routing.
3Reliability
If multiple power supply circuits are combined to ensure continuous power supply, then reliability is improved, but the potential for harmful effects from abnormalities increases
Solution Approach 1:
The power supply system is segmented into multiple independent circuits with separate connection devices. When an abnormality occurs in one circuit, the segmentation allows other circuits to continue operating independently, maintaining continuous power supply to load devices while isolating the harmful effects to the affected segment only.
Solution Approach 2:
Connection devices are designed with built-in protective mechanisms that provide beforehand cushioning against abnormalities. These mechanisms include overcurrent protection, short circuit interruption, and abnormality detection capabilities that are prepared in advance to cushion the impact of potential failures before they can propagate through the system.
Data Source
AI summary
A power supply system includes: a first power supply circuit for supplying, to a first load device, DC power output from a first power generation device; a second power supply circuit for supplying, to a second load device, DC power output from a second power generation device; and a first connection circuit including a first connection device capable of connecting the positive side of the first power supply circuit and the positive side of the second power supply circuit, and a second connection device capable of connecting the negative side of the first power supply circuit and the negative side of the second power supply circuit. The first connection device and the second connection device are disposed on one end side and the other end side of the first connection circuit, respectively.