Energy saving method of refrigeration system based on model-free control algorithm

Abstract

This article designs a dual-loop energy-saving control scheme for the refrigeration system. To deal with the actual refrigeration system with characteristics of large time-delay, a model-free adaptive control method with input rate constraint of time delay is designed to reduce the impact of large time delay on the whole control process. Simulation study of typical system with large time delay is carried out and the energy saving control scheme using the proposed novel model-free control algorithm is considered. It is shown that the proposed control algorithm has better dynamic characteristics and faster response speed. The effectiveness of the proposed control method is validated.