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PostTime: 2014/12/13 13:23:16 Views: 3986
Application of CHZIRI frequency inverter in air compressor.
1. Technical Requirements
2. Remodeling Solution
The air compressor variable frequency control system is mainly composed of a frequency converter, a pressure sensor and a control and indication circuit as shown in the diagram below:
A pressure sensor component is first used to test the pressure in the pipe network. Next, the detection display instrument sends the output pressure analogue signal to the frequency converter, which then compares the feedback signal and the given signal, using the internal PID of the frequency converter to carry out automatic output frequency regulation, allowing for automatic adjustment of compressor motor speed and output power. This creates a closed-loop feedback system that maintains constant pressure and automatic control in the pipe network.
3. Solution Advantages
After applying variable frequency control remodeling to piston compressors, the following advantages were seen:
■ Smooth soft starts, avoiding electrical and mechanical shock, thus extending the service life of the both the compressor motor and compressor components;
■ The CHZIRI frequency inverter full startup torque characteristic satisfied startup requirements of the air compressor under a heavy load;
■ Automatic stepless speed regulation and automatically maintained constant air pressure;
■ Energy saving operation while at the same time providing excellent automated control;
■ Considerable reduction in air compressor noise levels;
■ Able to be used with a parallel air supply from multiple air compressors;
■ Lowered both the cost and amount of maintenance needed for the air compressor;
■ Many protective functions against short circuits, overcurrent, overvoltage, overload, undervoltage, etc.
It is because of these advantages that CHZIRI’s frequency inverters have been widely used in the variable frequency remodeling of air compressors.