Priority Power Distribution for Aircraft Overload Protection
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Solution Overview
Problem
Existing power distribution systems in vehicles and aircraft face overload situations due to varying load demands, particularly at extreme temperatures or with comfort equipment, which can compromise safety equipment by maintaining constant power demand even when the source is saturated, leading to insufficient response to input current transients.
Innovation Solution
A power distribution arrangement with power limiting units connected between the input and outputs, featuring a power sensor, regulator circuit, comparison unit, and control unit that dynamically adjusts output power based on measured load power and a threshold, ensuring safety equipment prioritization and rapid response to overload conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If comfort equipment maintains constant power demand to regulate output power, then output power stability is improved, but power source overload risk increases
Solution Approach 1:
The patent implements feedback control by monitoring the actual power consumption of comfort equipment and comparing it with the available power from the power source. When the power demand exceeds the available power, the system automatically reduces the power supplied to comfort equipment, preventing overload while maintaining output power stability within available constraints.
Solution Approach 2:
The system dynamically adjusts the power supply to comfort equipment based on real-time power source availability. Instead of maintaining rigid constant power demand, the power supply varies dynamically according to the power source's capacity, allowing the system to adapt to changing conditions and prevent overload situations.
2Adaptability or versatility
If control channels are used to adapt current limits between voltage sources, then coordination between sources is improved, but response speed to input current transients deteriorates
Solution Approach 1:
The patent replaces software-based control channel communication with direct hardware-level electrical signaling. The power management unit directly senses current transients and immediately responds through hardware control circuits, eliminating the communication delays inherent in software-based control channels while maintaining coordination between multiple voltage sources.
Solution Approach 2:
The patent introduces a dedicated power management unit as an intermediary between the power sources and loads. This unit directly monitors power source conditions and immediately adjusts power distribution through hardware control, serving as a fast-responding mediator that eliminates the need for slow software-based communication between sources.
3Adaptability or versatility
If power is distributed to multiple loads simultaneously, then system functionality is improved, but power source overload occurs
Solution Approach 1:
The patent implements partial power distribution by allocating power to multiple loads based on priority levels and available power capacity. When total power demand exceeds source capacity, the system provides partial power to lower-priority loads while ensuring full power to high-priority safety equipment, maintaining system functionality without causing overload.
Solution Approach 2:
The patent applies different power distribution strategies to different loads based on their priority and importance. Safety-critical equipment receives guaranteed power supply with higher priority, while comfort equipment receives power only when capacity is available. This local differentiation of power quality and priority prevents overload while maintaining essential system functionality.
Data Source
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AI summary
An arrangement and a method for distributing power supplied by a power source to two or more of loads is disclosed, where a representation of the power taken by a particular one of the loads from the source is measured; regulating an output power dependant on a control signal is regulated; the measured representation of the power taken from the source by the particular one of the loads is compared to a threshold for providing an overload signal in case the representation succeeds the threshold; and control signals dependant on the occurring of the overload signal are provided such that the control signal decreases the output power of the power circuit in case the overload signal occurs.