Dynamic Power Supply Mode Selection for Vehicle Overload Prevention
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Solution Overview
Problem
Power distribution systems in vehicles like aircraft, ships, and railway vehicles often limit electric power to prevent overload, making it inconvenient for users when the total power consumed exceeds a certain level, as they cannot supply power to newly connected devices.
Innovation Solution
A power supply system with a power control device and power supply device that measures current power usage and selects from multiple operation modes to adjust the power supply conditions, allowing for stepwise increases in power delivery to external devices, preventing the system from reaching its maximum capacity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the power distribution system limits the amount of electric power supplied to multiple power outlets to prevent overload, then the system reliability is improved, but the usability for users deteriorates when the total power consumed exceeds a certain level
Solution Approach 1:
The power supply system dynamically adjusts the power supply conditions by selecting from multiple operation modes based on the currently supplied power level. As power consumption increases, the system transitions between operation modes to optimize the balance between reliability and usability, allowing flexible power distribution rather than rigid limiting.
Solution Approach 2:
The system changes the power supply parameters by defining multiple operation modes with different power conditions. Each operation mode represents a different parameter set for power distribution, allowing the system to adaptively adjust power allocation based on current usage levels while maintaining system reliability.
2Power
If the system controls not to supply electric power to remaining power outlets when total power consumed increases, then the power overload is prevented, but the adaptability to different user needs deteriorates
Solution Approach 1:
The system dynamically adapts its power distribution strategy by selecting appropriate operation modes based on current power consumption levels. This allows the system to be versatile in meeting different user needs while dynamically preventing overload conditions through intelligent mode selection rather than rigid power cutoffs.
Solution Approach 2:
The power supply system is segmented into multiple operation modes, each representing a different power distribution strategy. This segmentation allows the system to choose the most appropriate mode for current conditions, improving adaptability to various user scenarios while maintaining power safety through structured mode transitions.
Data Source
AI summary
A power supply system includes a power control device and a power supply device. The power control device includes a first controller, a power measurement circuit, and a first communication circuit. The power measurement circuit measures power being supplied to the power supply device. The first controller calculates additionally suppliable power based on the power being supplied and selects one operation mode based on the additionally suppliable power. The first communication circuit transmits the operation mode selected to the power supply device. The power supply device includes a second controller, a power converter circuit, and a second communication circuit. The second communication circuit receives the operation mode selected. The second controller outputs a condition of supply power indicating electric power supplied, to the power converter circuit. The power converter circuit converts electric power based on the condition of supply power, and supplies the electric power converted to an external device.