Power Supply Management in Information Handling Systems
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Solution Overview
Problem
Information handling systems face inefficiencies in power supply management, leading to wasted energy and increased operational costs due to power supplies operating below peak efficiency, as they are not optimized based on real-time power consumption patterns.
Innovation Solution
Implementing a method to measure power consumption of each device in an information handling system and adjusting the number of operating power supplies accordingly, using a chassis management controller to determine sufficient power and redirect power allocation to maintain peak efficiency by turning off unnecessary power supplies and reallocating power.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple power supplies are kept active to ensure sufficient power availability, then system reliability is improved, but energy waste increases due to operating supplies below peak efficiency
Solution Approach 1:
The system dynamically adjusts the number of active power supplies based on real-time power consumption measurements. The chassis management controller continuously monitors power usage and activates or deactivates power supplies to match actual demand, transitioning from a static configuration to a dynamic adaptive system that optimizes efficiency while maintaining reliability
Solution Approach 2:
The system implements a feedback mechanism where power consumption is measured by sensors and fed back to the chassis management controller. This feedback loop enables the controller to make informed decisions about power supply activation, adjusting the system state based on actual power needs to prevent both energy waste and insufficient power availability
2Loss of energy
If power supplies are deactivated to reduce energy waste, then energy efficiency is improved, but power availability may become insufficient
Solution Approach 1:
The system performs preliminary measurements of power consumption for each device before making decisions about power supply deactivation. By understanding the power profile in advance, the chassis management controller can confidently deactivate power supplies knowing that sufficient power will be available from remaining supplies, thus improving efficiency without compromising reliability
Solution Approach 2:
The feedback mechanism continuously monitors power consumption and compares it against the capacity of active power supplies. This real-time information allows the system to safely deactivate power supplies when consumption is low while automatically activating them again when demand increases, dynamically balancing efficiency and reliability
3Measurement precision
If power consumption is measured for each device, then power allocation precision is improved, but system complexity increases due to additional sensors and control logic
Solution Approach 1:
The chassis management controller performs multiple functions: it manages power supply activation, monitors power consumption, makes allocation decisions, and controls device power states. By consolidating these functions in a single controller rather than distributing complexity across multiple components, the system achieves precise measurement and control while minimizing overall system complexity
Solution Approach 2:
The system uses the existing power consumption data and device information already available in the chassis management controller to make autonomous decisions about power allocation. Rather than requiring complex external control systems, the controller self-manages power optimization by processing measurements and implementing adjustments without external intervention
Data Source
AI summary
A method of controlling power supplies in an information handling system, comprising measuring a power consumption of each of a plurality of electrical devices in the information handling system and adjusting a number of operating power supplies based at least in part on the measured power consumption of each of the plurality of electrical devices.