Frequency conversion control system of air compressor

Abstract

The invention discloses a frequency conversion control system of an air compressor. The system comprises a pressure sensor and a transducer, wherein the transducer comprises a signal processing unit and a signal control unit; the pressure sensor is arranged at the output end of an air storage tank of the air compressor, converts a pressure signal into an electrical signal and sends the electrical signal to a signal processing unit in the transducer; the signal processing unit performs comparison operation on the signal input by the pressure sensor and the set value, and outputs a control signal to the signal control unit; and the signal control unit adjusts the motor speed of the air compressor according to the output frequency of the control signal input by the signal processing unit. Through the adoption of the frequency conversion control system of air compressor provided by the invention, constant-pressure air supply for the air compressor can be realized, the electric energy loss can be reduced, and impact on the motor, the air compressor and a power grid can be decreased at the same time.

Description

technical field [0001] The invention relates to the field of frequency conversion control, in particular to an air compressor frequency conversion control system. Background technique [0002] As a common power equipment, the air compressor generally accounts for about 60% of the installed capacity. Once the air compressor is started, the motor runs at power frequency, and only the damper is used to control loading and unloading. In actual work, it is usually loaded for 1 minute and unloaded for 2 minutes. Repeated loading and unloading will cause great impact on the motor, air compressor and power grid; and when unloading, the air compressor does not generate compressed air, and the motor is in a no-load operation state , its power consumption is about 60% of the full load, and this part of the power is wasted. Further frequent loading and unloading makes the air supply pressure unstable, and the fluctuation of air supply air pressure will have a certain impact on the qual...

AI Technical Summary

Problems solved by technology

In actual work, it is usually loaded for 1 minute and unloaded for 2 minutes. Repeated loading and unloading will cause great impact on the motor, air compressor and power grid; and when unloading, the air compressor does not generate compressed air, and the motor is in a no-load operation state , its power consumption is about 60% of the full load, and this part of the power is wasted

Further frequent loading and unloading makes the air supply pressure unstable, and the fluctuation of air supply air pressure will have a certain impact on the quality of subsequent product production

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