CERN Accelerating science

Article
Title	Control Optimization of a LHC 18 KW Cryoplant Warm Compression Station Using Dynamic Simulations
Author(s)	Bradu, B (CERN) ; Gayet, Ph (CERN) ; Niculescu, S I (CNRS-SUPELEC, Gif sur Yvette)
Publication	2010
In:	AIP Conf. Proc. 1218 (2010) 1619-1627
In:	Cryogenic Engineering Conference and International Cryogenic Materials Conference, Tucson, AR, USA, 28 Jun - 2 Jul 2009, pp.1619-1627
DOI	10.1063/1.3422344
Subject category	Engineering
Abstract	This paper addresses the control optimization of a 4.5 K refrigerator used in the cryogenic system of the Large Hadron Collider (LHC) at CERN. First, the compressor station with the cold-box have been modeled and simulated under PROCOS (Process and Control Simulator), a simulation environment developed at CERN. Next, an appropriate parameter identification has been performed on the simulator to obtain a simplified model of the system in order to design an Internal Model Control (IMC) enhancing the regulation of the high pressure. Finally, a floating high pressure control is proposed using a cascade control to reduce operational costs.

Corresponding record in: Inspire