De-Synchronization of the Distributed Refrigeration System

Abstract:

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The supermarket refrigeration system typically has a distributed control structure, which simple and flexible, however, neglects interactions between its subsystems. Practice shows that these interactions lead to a synchronous operation of the display cases. It causes excessive wear on the compressors and increased energy consumption. The paper focuses on the synchronization analysis and de-synchronization control. The supermarket refrigeration system is modeled as a piecewise-affine switched system. The system behavior is decomposed such that synchronization analysis can be completed by using the Poincare map. A new de-synchronization scheme is proposed, which includes two steps: the synchronization monitoring and the de-synchronization control. Thus, the early warning of the synchronization can be given and then the de-synchronization controller can be activated. The scheme achieves better control performance and can deal with the large scale refrigeration system with different system parameters in the display cases.

Info:

Periodical:

Advanced Materials Research (Volumes 139-141)

Edited by:

Liangchi Zhang, Chunliang Zhang and Tielin Shi

Pages:

2221-2224

DOI:

10.4028/www.scientific.net/AMR.139-141.2221

Citation:

L. Chen and R. Wisniewski, "De-Synchronization of the Distributed Refrigeration System", Advanced Materials Research, Vols. 139-141, pp. 2221-2224, 2010

Online since:

October 2010

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Price:

$35.00

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