Dynamic Power Allocation in PoE Systems
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Solution Overview
Problem
Existing power supply systems using Power over Ethernet (PoE) technology inefficiently manage power distribution, as they primarily rely on device priority, leading to suboptimal resource utilization and inability to perform elastic power management.
Innovation Solution
A power supply system and method that dynamically select a current requesting device based on both power stable and sufficient criteria, ensuring efficient power allocation and removal of devices, rather than solely relying on priority, using a processing circuit and memory to manage power requests and operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If power allocation is based on device priority, then device operation order is controlled, but resource utilization efficiency deteriorates
Solution Approach 1:
The patent implements dynamic power allocation by continuously monitoring system power status and adjusting power distribution in real-time. The power supplying equipment transitions from static priority-based allocation to dynamic allocation that adapts to current system conditions, allowing flexible adjustment of powered devices based on available power resources and device requests.
Solution Approach 2:
The system changes the parameter of power allocation from fixed priority values to variable parameters that include device power requests, current system power status, and stability criteria. This allows the power distribution to be adjusted based on multiple factors rather than a single priority metric, improving overall resource utilization.
2Device complexity
If rigid power management is implemented, then power distribution order is determined, but elastic power management capability deteriorates
Solution Approach 1:
The patent introduces dynamic evaluation criteria including stability assessment and power sufficiency checks that allow the system to adapt to changing conditions. The power management mechanism can flexibly adjust which devices remain powered based on real-time system status rather than following a rigid predetermined order.
Solution Approach 2:
The system implements feedback mechanisms by continuously evaluating whether the system remains stable and whether sufficient power is available before allocating power to the next device in the to-be-powered list. This feedback loop enables elastic power management that responds to actual system conditions.
3Productivity
If all requested devices are powered, then device availability is maximized, but system stability deteriorates when power is insufficient
Solution Approach 1:
The system performs preliminary stability assessment and power sufficiency evaluation before allocating power to each device in the to-be-powered list. By checking whether the system can remain stable and whether sufficient power is available in advance, the system prevents power allocation that would compromise system stability.
Solution Approach 2:
The system implements a tiered power allocation strategy where devices are powered in a predetermined order, and lower-priority devices can be quickly deactivated when power becomes insufficient. This allows the system to maintain stability by sacrificing less critical devices while preserving more important ones.
Data Source
AI summary
The present invention discloses a power supply method having power management mechanism that includes the steps outlined below. Power request information of power requesting devices is retrieved to generate a to-be-powered device list and a requested power. Whether a current requesting device satisfy a power stable criteria and a power sufficient criteria is determined, The power stable criteria is satisfied when the power requesting devices each having a priority higher than that of the current requesting device all operate in a powered mode or when the power requesting devices that operate in the powered mode enter a stable operation status. The power sufficient criteria is satisfied when a stable system remained power of a power supply system is not smaller than an individual requested power of the current requesting device. When the criteria are satisfied, the current requesting device is operated in the powered mode to update the requested power.