Share

IIR document

A model-driven multivariable controller for vapour compression refrigeration systems.

Author(s) : SCHURT L. C., HERMES C. J. L., TROFINO NETO A.

Type of article: Article, IJR article

Summary

A model-driven controller for vapour compression refrigeration systems is presented herein. Mathematical sub-models were developed for each of the system components: heat exchangers (condenser and evaporator), variable-speed compressor and variable-orifice electric expansion device. The overall system simulation model was used to design a MIMO controller based on the linear-quadratic Gaussian method using a state observer of the Kalman filter type. A purpose-built testing apparatus comprised of a variable-speed compressor and a pulse-width modulated expansion valve was used to collect data for the system identification and model validation exercises. It was found that the model reproduces the experimental trends of the working pressures in conditions far from the operation point (plus or minus 30%) with a maximum deviation of plus or minus 5%. Additional experiments were also performed to verify the ability of the controller of tracking reference changes and rejecting thermal load disturbances as high as 15%.

Available documents

Format PDF

Pages: pp. 1672-1682

Available

  • Public price

    20 €

  • Member price*

    Free

* Best rate depending on membership category (see the detailed benefits of individual and corporate memberships).

Details

  • Original title: A model-driven multivariable controller for vapour compression refrigeration systems.
  • Record ID : 2009-1994
  • Languages: English
  • Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 32 - n. 7
  • Publication date: 2009/11

Links


See other articles in this issue (33)
See the source

Indexing