Modular Power Infeed Circuit Prevents Source Coupling
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Solution Overview
Problem
Electrical power systems that allow modular components to be reconfigured in different ways pose a risk of electrical problems due to the potential for multiple power sources being coupled together, leading to out-of-phase sources and excessive loads without proper tripping of circuit breakers.
Innovation Solution
An intelligent electrical power infeed system with a circuit that isolates power sources until it's confirmed that the modular system is not already powered, using a switch, sensor, and controller to ensure only one power source energizes the system, preventing simultaneous coupling of multiple power sources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If modular electrical power systems are allowed to be reconfigured freely by users, then ease of operation and adaptability are improved, but the risk of electrical conflicts from multiple power sources being coupled together increases
Solution Approach 1:
A control circuit is introduced as an intermediary between the power input and output circuits. This control circuit monitors power presence and automatically opens or closes switches to prevent multiple power sources from being coupled together, while still allowing users to freely reconfigure the modular system without electrical safety risks
2Adaptability or versatility
If multiple power infeeds are permitted to be connected to the modular system, then adaptability and flexibility are improved, but the risk of out-of-phase sources and excessive loads increases
Solution Approach 1:
The control circuit continuously monitors the power status of the modular system and uses this feedback to automatically control the switches. When power is detected from one source, the control circuit prevents additional power sources from being coupled to the system, thereby maintaining adaptability while preventing electrical conflicts from out-of-phase sources or excessive loads
3Reliability
If automatic power source isolation is implemented, then electrical safety is improved, but device complexity increases
Solution Approach 1:
The control circuit is designed to automatically detect power sources and control the switches without requiring external intervention or complex manual procedures. The system self-manages the isolation of power sources through automated monitoring and switching, improving electrical safety while keeping the complexity manageable through self-service operation
Data Source
AI summary
An electrical power infeed module for modular electrical power systems selectively provides power to one or more electrical outlets in the system from a single power source, regardless of the number of power sources are engaged by power infeed modules in the system. The power infeed module includes a power infeed cable, a power output cable, and an electrical circuit disposed between the power infeed cable and the power output cable, the electrical circuit being operable to selectively connect the power output cable to the power infeed cable if the power infeed cable is connected to a first power source and the power output cable is not already electrically energized by a second power source. The circuit includes an electrical switch, a sensor for detecting whether the power output cable is electrically energized, and a controller for operating the switch in response to a signal from the sensor.