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Energy‐efficient operation of indirect adiabatic data center cooling systems via Newton‐like phasor extremum seeking control
Author(s) -
Lionello Michele,
Lucchese Riccardo,
Rampazzo Mirco,
Guay Martin,
Atta Khalid
Publication year - 2021
Publication title -
international journal of adaptive control and signal processing
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.73
H-Index - 66
eISSN - 1099-1115
pISSN - 0890-6327
DOI - 10.1002/acs.3223
Subject(s) - phasor , hessian matrix , control theory (sociology) , estimator , energy (signal processing) , computer science , controller (irrigation) , matlab , mathematical optimization , mathematics , electric power system , control (management) , power (physics) , statistics , physics , quantum mechanics , artificial intelligence , agronomy , biology , operating system
Summary This paper considers the problem of optimizing the operation of Indirect Adiabatic Cooling (IAC) systems with application to data centers. Optimal operation is achieved when the required cooling demand is satisfied at the minimum energy cost. For this purpose, we design a supervisory control system, where the higher layer determines the optimal set‐points for the local controllers by employing an Extremum Seeking Control (ESC) scheme. In particular, we consider a Newton‐like phasor ESC, which augments the derivative estimator underlying the phasor approach to capture also the Hessian of the plant index and then it uses these estimates to steer the system along a Newton‐like direction. The effectiveness of the considered approach is tested in simulation by exploiting a Matlab‐based simulation environment including an IAC system and a computer room.