Title :
Nonlinear superheat control of a refrigeration plant using backstepping
Author :
Rasmussen, Henrik
Author_Institution :
Dept. of Electron. Syst., Aalborg Univ., Aalborg
Abstract :
This paper proposes a novel method for superheat and capacity control of refrigeration systems. The main idea is to control the superheat by the compressor speed and capacity by the refrigerant flow. A new low order nonlinear model of the evaporator is developed and used in a backstepping design of a nonlinear controller. The proposed method is validated by experimental results.
Keywords :
compressors; heat transfer; nonlinear control systems; refrigerants; refrigeration; temperature control; backstepping; capacity control; compressor speed; evaporator; nonlinear superheat control; refrigerant flow; refrigeration plant; Backstepping; Control systems; Heat transfer; Nonlinear control systems; Refrigerants; Refrigeration; Temperature control; Temperature sensors; Valves; Water heating;
Conference_Titel :
Industrial Electronics, 2008. IECON 2008. 34th Annual Conference of IEEE
Conference_Location :
Orlando, FL
Print_ISBN :
978-1-4244-1767-4
Electronic_ISBN :
1553-572X
DOI :
10.1109/IECON.2008.4757967
