Adaptive PSU Load Shedding for Multi-Supply Power Continuity
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Solution Overview
Problem
In systems with multiple power supply units, failure of one unit can lead to increased load on others, potentially causing overload and system instability due to inadequate power management.
Innovation Solution
A supervisor system that receives and stores power supply unit (PSU) capacity and consumption data, updates a priority table with controlled device power consumption data, and initiates power response procedures when PSU consumption exceeds a calculated threshold, such as reducing power to lower-priority devices or shifting load between PSUs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If one power supply unit fails, then the load increases on remaining power supply units, but this causes overload and potential system shutdown
Solution Approach 1:
The supervisor proactively monitors PSU capacity and consumption data, identifies potential overload conditions before they occur, and initiates power response procedures in advance. By calculating thresholds based on PSU capacity data and monitoring consumption data, the system takes preliminary action to prevent overload and shutdown, ensuring system continuity.
2Reliability
If power management is inadequate, then power distribution is unbalanced, but this leads to overload and system instability
Solution Approach 1:
The supervisor continuously monitors PSU capacity data, consumption data, and controlled device power consumption data, comparing actual consumption against calculated thresholds. This feedback mechanism enables dynamic adjustment of power distribution, balancing load across PSUs and maintaining system stability through centralized adaptive power management.
Solution Approach 2:
The supervisor acts as an intermediary between PSUs and controlled devices, centralizing power management functions. It receives data from PSUs and controlled devices, processes this information, and initiates power response procedures to balance power distribution, thereby simplifying overall system management while ensuring stability.
3Power
If power response procedures are not initiated, then power consumption continues to increase, but this results in PSU failure and shutdown
Solution Approach 1:
The supervisor calculates power thresholds based on PSU capacity data in advance and continuously monitors consumption data against these thresholds. When consumption approaches the threshold, the system initiates power response procedures proactively, controlling power consumption before critical levels are reached and preventing shutdown.
Data Source
AI summary
Power management includes receiving power supply unit (PSU) power capacity data and PSU power consumption data from each PSU in a set of PSUs. A priority table is updated with controlled device power consumption data received from a set of controlled devices. If the PSU power consumption data of any PSU exceeds an associated threshold calculated based on the PSU power capacity data for the PSU, then one or more controlled devices are selected based on the controlled device power consumption data in the priority table. When power consumption data of any PSU exceeds the associated threshold, a power response procedure powers off at least one of the selected one or more controlled devices, reduces power supplied to at least one of the selected one or more controlled devices, or reduces an output voltage of any of the PSU for which the PSU power consumption data exceeds the associated threshold.