Synchronization and Desynchronizing Control Schemes for Supermarket Refrigeration Systems

Lars Finn Sloth Larsen, Claus Thybo Thybo, Roozbeh Izadi-Zamanabadi, Rafal Wisniewski

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10 Citationer (Scopus)

Abstract

A supermarket refrigeration system is a hybrid system with switched nonlinear dynamics and discrete-valued input variables such as opening/closing of valves and start/stop of compressors. Practical and simulation studies have shown that the use of distributed hysteresis controllers to operate the valves leads to synchronization, meaning that the opening and closing actions of the valves coincide. Consequently, the compressor periodically has to work hard resulting in low efficiency, inferior control performance and a high wear on the compressor. In this paper we propose two control schemes of low complexity for desynchronizing the valve operations while improving performance. Simulation results indicate the potential increase in efficiency and reduction in wear comparing with traditional control schemes.
OriginalsprogEngelsk
TitelIEEE International Conference on Control Applications, CCA 2007
Antal sider5
ForlagElectrical Engineering/Electronics, Computer, Communications and Information Technology Association
Publikationsdato2007
Sider1414-1419
ISBN (Trykt)978-1-4244-0443-8
DOI
StatusUdgivet - 2007
Begivenhed2007 IEEE Multiple-conference on Systems and Control (MSC2007) - , Singapore
Varighed: 1 okt. 20073 okt. 2007

Konference

Konference2007 IEEE Multiple-conference on Systems and Control (MSC2007)
Land/OmrådeSingapore
Periode01/10/200703/10/2007
NavnIEEE International Conference on Control Applications. Proceedings
ISSN1085-1992

Bibliografisk note

Contains The 16th IEEE International Conference on Control Applications (CCA) and the 22nd IEEE International Symposium on Intelligent Control (ISIC)

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