Share

IIR document

Studies on the heating capacity control of a multi-type heat pump system applying a multi-input multi-output (MIMO) method.

Author(s) : LEE I. H., CHOI J. W., KIM M. S.

Type of article: Article, IJR article

Summary

This paper describes a method to control the capacity of a multi-type heat pump system. Because indoor units are interconnected, alteration of the heating or cooling setting of one indoor unit can influence the performance of the other indoor units. Proportional-integral (PI) controllers were used to assess system performance, and the PI controllers' gain values were optimized by using a genetic algorithm. A system model was established following a system identification optimization process, and a pseudo random binary sequence was selected as the system identification input signal. A multi-input multi-output (MIMO) controller was more effective in reducing such cross-coupling effects than a single-input single-output (SISO) controller. The temperature at the secondary fluid outlet in the condenser and the saturation pressure at the evaporator were selected as the control variables in the MIMO controller. The experimental results showed that an optimized MIMO controller could reduce overshoot by up to 40% compared with the results using a SISO controller.

Available documents

Format PDF

Pages: pp. 416-428

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: Studies on the heating capacity control of a multi-type heat pump system applying a multi-input multi-output (MIMO) method.
  • Record ID : 2010-2034
  • Languages: English
  • Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 34 - n. 2
  • Publication date: 2011/03

Links


See other articles in this issue (18)
See the source

Indexing