FAULT DIAGNOSIS METHOD OF VARIABLE SPEED REFRIGERATION SYSTEM

摘要

The present invention relates to a fault diagnosis method of a variable speed refrigeration system capable of more rapidly and accurately diagnosing whether or not a refrigerator malfunctions. The fault diagnosis method of a variable speed refrigeration system according to the present invention is a method for diagnosing whether or not a variable speed refrigeration system malfunctions. Whether or not the variable refrigeration system malfunction is diagnosed by analyzing residual information defined as a difference between a real-time electric current applied in real time to the variable speed refrigeration system and an estimated electric current applied to the variable speed refrigeration system when the variable speed refrigeration system functions normally.