Power Supply Load Allocation for Critical and Non-Critical Loads
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Solution Overview
Problem
Existing power supply systems face inefficiencies due to the lack of effective load allocation methods, leading to increased power loss and decreased power density, especially when considering both the main power loop and auxiliary power circuits.
Innovation Solution
A power system comprising a conversion circuit, an auxiliary power circuit, and an output control circuit that selectively connects and disconnects output terminals to allocate power efficiently between critical and non-critical loads, thereby transferring non-critical loads to high-efficiency conversion circuits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the auxiliary power circuit is used to supply non-critical loads, then the power supply structure is simple, but the power loss increases and efficiency decreases
Solution Approach 1:
The patent implements dynamic load allocation by enabling the auxiliary power circuit to dynamically switch between supplying auxiliary loads and non-critical loads based on system conditions. The controller monitors the operational state and automatically redistributes power flow to optimize efficiency while maintaining system simplicity.
Solution Approach 2:
The system changes the operational parameters of the auxiliary power circuit by adjusting its output configuration. When the main power circuit operates efficiently, the auxiliary circuit's output is redirected from dedicated auxiliary loads to non-critical loads, thereby changing the power distribution parameters to reduce overall power loss.
2Loss of energy
If the main power circuit supplies all loads, then the efficiency is high, but the power density decreases and auxiliary power loss increases
Solution Approach 1:
The patent segments the power supply system into distinct functional modules: the main power circuit for critical loads and the auxiliary power circuit for non-critical loads. This segmentation allows each circuit to operate within its optimal efficiency range while maintaining high overall power density through coordinated power distribution.
3Loss of energy
If load allocation function is added to power supply, then the efficiency increases, but the device complexity increases
Solution Approach 1:
The auxiliary power circuit is designed with multi-functionality, serving both as an auxiliary power source for critical auxiliary loads and as a power source for non-critical loads. This universal design eliminates the need for separate dedicated circuits, thereby reducing overall device complexity while enabling efficient load allocation.
4Reliability
If the auxiliary power circuit operates independently, then the reliability is high, but the power loss increases
Solution Approach 1:
The controller implements feedback control by continuously monitoring the operational state of both power circuits and dynamically adjusting the power distribution. This feedback mechanism ensures that the auxiliary power circuit operates in the most efficient configuration while maintaining system reliability through real-time adaptation to changing load conditions.
Data Source
AI summary
A power supply includes a conversion circuit, an auxiliary power circuit, and an output control circuit. The conversion circuit converts a DC power into a first output power, and the auxiliary power circuit converts the DC power into a first auxiliary power. The output control circuit is used to selectively connect a first output terminal and a second output terminal so that when the output control circuit disconnects the first output terminal and the second output terminal, the first output power supplies power to a critical load through the first output terminal, and when the output control circuit connects the first output terminal and the second output terminal, the first output power supplies power to the critical load and a non-critical load through the first output terminal and the second output terminal respectively.