Compressor and Set-Point Temperature Control of a Domestic Refrigerator Using Fuzzy Systems

Document Type : Power Article

Authors

1 Department of Electrical and Computer Engineering, Semnan University, Semnan, Iran

2 Sunflower Industrial Research Co. (SIRCO, Mashhad, Iran

3 Sunflower Industrial Research Co. (SIRCO), Mashhad, Iran

Abstract

Domestic refrigerators have a noticeable contribution to energy consumption worldwide. Thus, it is beneficial to integrate control strategies for reducing their energy usage and improving their performance. The traditional hysteresis controller cannot perform effectively in the presence of uncertainties such as daytime or refrigerator door status. Additionally, most of the designed fuzzy controllers based on temperature error, do not address the door-opening behavior of the user. Hence, this paper employs fuzzy logic systems to improve the performance of domestic refrigerators. Based on the data collected from domestic users' door-opening events, the daytime is split into four time intervals and a fuzzy system is then designed to adjust the desired temperature of the refrigerator. Also, a fuzzy controller is designed to control the compressor speed according to the temperature error and the time of the day. A MATLAB refrigeration model is used to evaluate the proposed controller’s performance. The results demonstrate lower energy consumption and better temperature set-point tracking for the proposed controller than a fuzzy controller without addressing user behavior in the fuzzy rules design.

Keywords

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References

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Journal of Modeling in Engineering
Volume 23, Issue 80
In Progress
January 2025
Pages 21-30

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History

  • Receive Date: 22 October 2023
  • Revise Date: 10 June 2024
  • Accept Date: 19 June 2024

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