Air conditioner control method and system based on PID algorithm

Abstract

The invention provides an air conditioner control method and system based on a PID algorithm. The air supply temperature, the air returning temperature and humidity of an air conditioner in a machine room are collected; according to the air supply temperature, the air returning temperature and the preset machine room temperature, the starting frequency and the starting time of a compressor in the air conditioner are controlled; the incremental PID algorithm is utilized, and according to the temperature difference value between the air supply temperature and the air returning temperature and the preset machine room temperature, the optimal output frequency of the compressor is calculated; meanwhile, according to the optimal output frequency of the compressor, the optimal rotating speed of a draught fan is adjusted; the compressor is controlled to carry out cold amount output at the optimal output frequency, and the draught fan is controlled to rotate at the adjusted rotating speed. According to the method and system, a frequency converter adjusts the rotating speed of the compressor, the air conditioner outputs the smaller cold amount, balance of the cold amount and the heat amount in the machine room is achieved, the starting and stopping frequency of the compressor is reduced, the running energy consumption of the compressor is reduced, and therefore the air conditioner runs in a more energy-saving manner.

Description

technical field [0001] The present invention relates to the technical field of air-conditioning control, in particular to an air-conditioning control method and system based on a PID algorithm. Background technique [0002] At present, users using traditional IDC data centers are basically large computer rooms of telecom operators, data center service providers, banks, hospitals, and government agencies. This type of computer room uses direct expansion precision air conditioners in large quantities. The method is to adjust the output cooling capacity of the air conditioner, but there are generally phenomena such as low air conditioner efficiency, high energy consumption, and frequent start and stop of the compressor, resulting in shortened service life. [0003] Over the years, as the phenomenon of huge power consumption in data centers has become increasingly prominent, and the pressure on its operating costs has increased, the industry is also constantly researching variou...

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Problems solved by technology

[0006] In view of the deficiencies in the above-mentioned prior art, the purpose of the present invention is to provide users with an air-conditioning control method and system based on the PID algorithm, which overcomes the low temperature of the IT equipment in the computer room in the prior art and the existence of Defects of poor internal humidity control accuracy

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