US2013054981A1PendingUtilityA1

Branch Circuit Power Measurement and Dynamic Power Distribution

47
Assignee: ALLEN-WARE MALCOLM SPriority: Aug 23, 2011Filed: Aug 23, 2011Published: Feb 28, 2013
Est. expiryAug 23, 2031(~5.1 yrs left)· nominal 20-yr term from priority
Inventors:Malcolm S. Allen-WareThomas M. BreyWael R. El-EssawyAlexandre Peixoto FerreiraThomas Walter Keller
G06F 1/3206
47
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Claims

Abstract

A mechanism is provided for dynamically changing power caps for a set of powered elements. Current being consumed by the set of powered elements P on a branch circuit is measured and available current on the branch circuit is determined. A new total power cap for a current time period t is identified based on a current total power cap and the measured current. A difference in total power caps (ΔTPC) is determined and, for each powered element p in the set of powered elements P at the current time period, a new power cap PC (p,t) is determined based on the previous power cap PC(p,t−1) and the difference of the total power caps to the set of powered elements P. A power cap of each powered element p is then dynamically set to the new power cap PC (p,t).

Claims

exact text as granted — not AI-modified
1 - 10 . (canceled) 
     
     
         11 . A computer program product comprising a computer readable storage medium having a computer readable program stored therein, wherein the computer readable program, when executed on a computing device, causes the computing device to:
 measure current being consumed by a set of powered elements P on a branch circuit;   determine available current on the branch circuit;   identify a new total power cap for a current time period t based on a current total power cap and the measured current;   determine a difference in total power caps (ΔTPC);   for each powered element p in the set of powered elements P on the current time period, determine a new power cap PC (p,t) based on the previous power cap PC(p,t−1) and the difference of the total power caps to the set of powered elements P; and   dynamically set a power cap of each powered element p to the new power cap PC (p,t).   
     
     
         12 . The computer program product of  claim 11 , wherein the available current on the branch circuit is determined by subtracting the measured current on the branch circuit from a branch circuit capacity current value. 
     
     
         13 . The computer program product of  claim 11 , wherein the power cap of each powered element p is set in response to a failure in at least one of a primary power controller or a redundant power controller. 
     
     
         14 . The computer program product of  claim 11 , wherein identifying the new total power cap for the current time period based on the current total power cap and the measured current uses a proportional-integral-derivative (PID) closed-loop control. 
     
     
         15 . The computer program product of  claim 11 , wherein the difference in total power caps is determined by subtracting the current total power cap from the new total power cap. 
     
     
         16 . The computer program product of  claim 11 , wherein the new power cap PC (p,t) is determined using: 
       ( PC ( p,t ))= PC ( p,t− 1)+(Δ TPC/P ) 
     
     
         17 . The computer program product of  claim 11 , wherein the power cap of each, powered element p is set to the new power cap PC (p,t) via at least one of an operating system level management application or a service processor. 
     
     
         18 . An apparatus, comprising:
 a processor; and   a memory coupled to the processor, wherein the memory comprises instructions which, when executed by the processor, cause the processor to:   measure current being consumed by a set of powered elements P on a branch circuit;   determine available current on the branch circuit;   identify a new total power cap for a current time period t based on a current total power cap and the measured current;   determine a difference in total power caps (ΔTPC);   for each powered element p in the set of powered elements P at the current time period, determine a new power cap PC (p,t) based on the previous power cap PC(p,t−1) and the difference of the total power caps to the set of powered elements P; and   dynamically set a power cap of each powered element p to the new power cap PC (p,t).   
     
     
         19 . The apparatus of  claim 18 , wherein the available current on the branch circuit is determined by subtracting the measured current, on the branch circuit from a branch circuit capacity current value. 
     
     
         20 . The apparatus of  claim 18 , wherein the power cap of each powered element p is set in response to a failure in at least one of a primary power controller or a redundant power controller. 
     
     
         21 . The apparatus of  claim 18 , wherein identifying the new total power cap for the current time period based on the current total power cap and: the measured current uses a proportional-integral-derivative (PID) closed-loop control. 
     
     
         22 . The apparatus of  claim 18 , wherein the difference in total power caps is determined by subtracting the current total power cap from the new total power cap. 
     
     
         23 . The apparatus of  claim 18 , wherein the new power cap PC (p,t) is determined using:
   ( PC ( p,t ))= PC ( p,t− 1)+(Δ TPC/P )
   
     
     
         24 . The apparatus of  claim 18 , wherein the power cap of each powered element p is set to the new power cap PC (p,t) via at least one of an operating system level management application or a service processor. 
     
     
         25 . The computer program product of  claim 11 , wherein the power cap of each powered element p is set to the new power cap PC (p,t) and communicated over at least one of an information technology network or a power line communications system. 
     
     
         26 . The computer program product of  claim 11 , wherein, responsive to a power and current measurement system (PCMS) failure, the power cap of each powered element p is set to a percentage of a maximum power setting of the powered element 
     
     
         27 . The computer program product of  claim 26 , wherein the percentage, of the maximum power setting of the powered element is 66 percent. 
     
     
         28 . The apparatus of  claim 18 , wherein the power cap of sack powered element p is set to the new power cap PC (p,t) and communicated over at least one of an information technology network or a power line communications system. 
     
     
         29 . The apparatus of  claim 18 , wherein, responsive to a power and current measurement system (PCMS) failure, the power cap of each powered element p is set to a percentage of a maximum power setting of the powered element. 
     
     
         30 . The apparatus of  claim 29 , wherein the percentage of the maximum power setting of the powered element is 66 percent.

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