Control of Compressors and Electronic Expansion Valve considering the Safe Operation of a Tandem-type Air-conditioning system

텐덤형 냉방시스템의 안전운전을 고려한 압축기와 전자팽창밸브 제어

Capacities of a tandem-type air-conditioner may be modulated by turning on and off of multiple compressors, and adjusting the position of a electronic expansion valve. In this study, control algorithms for compressors and a electronic expansion valve were developed by using fuzzy logics. The pressure control algorithm was also developed for the safe operation of compressors. There algorithms were implemented in a test lab and proved to be effective for the control of indoor air temperature and superheat temperature,