Air compressor exhaust control method and system thereof

Abstract

The invention relates to an air compressor exhaust control method and system. The air compressor exhaust control method comprises steps of step A, obtaining a current pressure value of an air compressor pipe network and a current power of a motor; step B, comparing the current pressure value with a constant pressure value, judging whether the current pressure value is smaller than or equal to the constant pressure value or not, sending a command for improving the motor rotating speed and executing a step C if yes and executing a step D if not; step C, improving the current rotating speed according to the command for improving the motor rotating speed and executing the step B; step D, comparing current power with rated power, judging whether the current power is larger than the rated power or not, sending a command for reducing the motor rotating speed and executing a step E if yes and sending a command of improving the motor rotating speed and executing the step C if not; step E, reducing the current rotating speed according to the command of reducing the motor reducing speed. The air compressor exhaust control method guarantees the stability of the pressure value of the air compressor pipe network under the condition that the air compressor energy consumption is not changed.

Description

Technical field [0001] The invention relates to the technical field of air compressors, in particular to an air compressor exhaust control method and an air compressor exhaust control system. Background technique [0002] Reference figure 1 , Variable-frequency air compressor control mode, according to the exhaust pressure signal and the constant pressure value, get the deviation, feedback to the PLC controller (Programmable Logic Controller), the PLC gives instructions (PID (Proportional-Integral) -Differential) adjustment calculation) Adjust the output frequency and voltage of the inverter (constant torque output), the output frequency of the inverter is less than or equal to the rated frequency of the motor. Due to the alternating current of the corresponding frequency and amplitude output by the inverter, the corresponding speed is obtained on the motor. Then the compressed air corresponding to the output of the air compressor is output to the air storage tank to change the ...

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Problems solved by technology

However, if the gas consumption end suddenly increases the gas consumption, the pressure value of the air compressor pipe network will be lower than the constant pressure value at this time. In order to ensure the stability of the pipe network pressure value, the power consumption of the air compressor will increase.

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