Redundant Power Supply Cold Standby Voltage Reduction
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Solution Overview
Problem
Conventional power supply devices with redundant power mechanisms consume high power when operated in cold redundant mode, exceeding 10 W, which is inefficient.
Innovation Solution
A redundant power system comprising a main power circuit, auxiliary power circuit, and micro control unit that reduces output voltages and powers by transmitting a cold redundant signal to both circuits, disabling isolation units, and utilizing field effect transistors to manage power levels, thereby decreasing power consumption to less than 4 W.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the conventional power supply device operates in cold redundant mode with both main and auxiliary power circuits active, then the power supply reliability is maintained, but the input power consumption increases to about 10 W
Solution Approach 1:
The patent applies dynamics by making the power circuit states changeable based on operational needs. The main power circuit and auxiliary power circuit can dynamically switch between operation mode and standby mode, allowing the system to adapt its power consumption characteristics while maintaining reliability. The microcontroller unit controls the transition of power circuits between different states based on system requirements.
Solution Approach 2:
The patent changes the operational parameters of the power circuits by adjusting voltage levels. When transitioning to standby mode, the power circuits reduce their output voltage from operation level to standby level, thereby reducing power consumption. The isolation units also transition between conductive and non-conductive states, changing their electrical parameters to achieve power savings while maintaining system reliability.
2Reliability
If the main power circuit and auxiliary power circuit both operate simultaneously, then the power supply can maintain function during abnormalities, but the power consumption is relatively high at about 10 W
Solution Approach 1:
The patent segments the power supply system into distinct functional units: main power circuit, auxiliary power circuit, main isolation unit, and auxiliary isolation unit. This segmentation allows independent control of each unit, enabling the system to put certain segments into standby mode while keeping others active, thus reducing overall energy loss while maintaining the ability to supply power during abnormalities.
Solution Approach 2:
The isolation units serve as intermediaries between the power circuits and the external system. These isolation units can be controlled to disconnect power circuits from the system when not needed, acting as mediators that allow the power circuits to enter low-power states while still being able to quickly restore power supply function when abnormalities occur.
Data Source
AI summary
A redundant power includes a main power circuit for generating main power, a main power isolation unit, an auxiliary power circuit for generating auxiliary power, an auxiliary power isolation unit and a micro control unit. The main power isolation unit and auxiliary power isolation unit receive and output the main power and auxiliary power respectively. The micro control unit transmits a cold redundant signal to the main power circuit and auxiliary power circuit when receiving the cold redundant signal and outputs first and second disable signals to the main power isolation unit and auxiliary power isolation unit respectively. In response to the cold redundant signal, the main power circuit and auxiliary power circuit reduce levels of the main power and auxiliary power respectively. The main power isolation unit and auxiliary power isolation unit are disabled according to the first and second disable signals respectively.