Intelligent control of an inverter heat pump

An inverter heat pump improved the annual operation performance obviously. This paper demonstrates how intelligent control can be used in an inverter heat pump. Based on experiments and practical experience, intelligent control was more robust. There were three control loops in an inverter heat pump: expansion valve and discharge temperature loop; inverter-compressor and inverter current loop; and indoor fan-grille and thermal comfort loop. For each control loop, a fuzzy-logic control was used and the whole system was administrated with an artificial neural network. Experiments showed that the proposed intelligent control strategy was effective and practical.