This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Improving Energy Efficiency in Automotive Vapor Compression Cycles through Advanced Control Design
Technical Paper
2006-01-0267
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
This paper presents an experimental analysis of the performance of various control strategies applied to automotive air conditioning systems. A comparison of the performance of a thermal expansion valve (TEV) and an electronic expansion valve (EEV) over a vehicle drive cycle is presented. Improved superheat regulation and minor efficiency improvements are shown for the EEV control strategies. The efficiency benefits of continuous versus cycled compressor operation are presented, and a discussion of significant improvements in energy efficiency using compressor control is provided. Dual PID loops are shown to control evaporator outlet pressure while regulating superheat. The introduction of a static decoupler is shown to improve the performance of the dual PID loop controller. These control strategies allow for system capacity control, enabling continuous operation and achieving significant energy efficiency improvements.
Recommended Content
Authors
Topic
Citation
Keir, M., Rasmussen, B., and Alleyne, A., "Improving Energy Efficiency in Automotive Vapor Compression Cycles through Advanced Control Design," SAE Technical Paper 2006-01-0267, 2006, https://doi.org/10.4271/2006-01-0267.Also In
References
- Rasmussen, B. P. “Dynamic Modeling and Advanced Control of Air-Conditioning and Refrigeration Systems,” Dept. of Mech. Eng. University of Illinois at Urbana-Champaign Urbana, IL. 2005
- He, X. D. Liu, S. Asada, H. “Modeling of Vapor Compression Cycles for Multivariable Feedback Control of HVAC System,” Journal of Dynamic Systems, Measurement, and Control 119 2 183 191 1997
- Shah, R. Rasmussen, B. P. Alleyne, A. G. “Application of a Multivariable Adaptive Control Strategy to Automotive Ai Conditioning Systems,” International Journal of Adaptive control and Signal Processing 18 199 221 2004
- Beck, B. T. Wedekind, G. L. “Generalization of the System Mean Void Fraction Model for Transient Two-Phase Evaporating Flows,” Journal of Heat Transfer 103 1 81 85 1981
- Grald, E. W. MacArthur, J. W. “A Moving Boundary Formulation for Modeling Time-Dependent Two-Phase Flows,” International Journal of Heat & Fluid Flow 13 3 266 272 1992
- Dane, M. H. Miller, N. R. Alleyne, A. G. Bullard, C. W. Hrnjak, P. S. “Investigation of Control Strategies for Reducing Mobile Air-Conditioning Power Consumption,” ACRC Technical Report No. 199 August 2002
- Ratts, E. B. Brown, J. S. “An Experimental Analysis of Cycling in an Automotive Air Conditioning System,” Applied Thermal Engineering 20 1039 1058 2000
- Gruhle, W. D. Isermann R. “Modeling and Control of a Refrigerant Evaporator,” Journal of Dynamic Systems, Measurement, and Control 107 235 240 1985
- Rasmussen, B. P. Alleyne, A. G. “Control Oriented Modeling of Transcritical Vapor Compression Systems,” Journal of Dynamic Systems, Measurement, and Control 126 54 64 2004
- Lenger, M. J. Jacobi A. M. Hrnjak, P. S. “Superheat Stability of an Evaporator and Thermostatic Expansion Valve,” ACRC Technical Report No. 138 July 1998
- Ljung, L. System Identification: Theory for the User Prentice Hall PTR New Jersey 1999
- Qureshi, T. Q. Tassou, S. A. “Variable-Speed Capacity Control in Refrigeration Systems,” Applied Thermal Engineering 16 2 103 113 1996
- Nadamoto, H. Kubota, A. “Power Saving with the use of Variable Displacement Compressor,” SAE Congress Paper 1999-01-0875 1999
- Astrom, K. J. Johansson, K. H. Wang, Q. “Design of Decoupled PID Controllers for MIMO Systems,” Proc. of the American Control Conference Arlington, VA 2001