The role of the frequency converter on the air compressor

The role of the frequency converter on the air compressor

The frequency converter is a very important controller on the air compressor. The use of the frequency converter in the air compressor system is precisely to make the air compressor system through the precise coordination of electrical control and frequency conversion control, without changing the motor torque of the air compressor. Under the premise of real-time control of motor speed, change the compressor speed to respond to changes in system pressure and maintain a stable system pressure to achieve on-demand output of high-quality compressed air. When the air consumption of the system decreases, and the compressed air provided by the compressor is greater than the consumption of the system, the compressor will reduce the speed and reduce the output compressed air volume; on the contrary, increase the motor speed and increase the compressed air volume to maintain a stable system pressure value . The role of the frequency converter in its system is the same as that of the fan, motor, and water pump. It controls the input voltage frequency according to the load change.

　　 Its energy-saving principles and effects are as follows:

1. After using the inverter, the pressure setting of the air compressor can be one point, that is, the lowest pressure that meets the requirements of the production equipment can be used as the set pressure, and the inverter will adjust the air compressor speed according to the trend of fluctuations in the pipe network pressure. The speed even eliminates the unloading operation of the air compressor and saves electric energy.

2. Because the frequency converter in the system stabilizes the pressure on the pipe network, it can reduce or even eliminate pressure fluctuations, so that all the air compressors in the system run at a lower pressure that meets the production requirements, reducing the pressure Power loss caused by upward fluctuations.

　　3. Since the air compressor cannot rule out the possibility of running for a long time under full load, the capacity of the motor can only be determined according to the maximum demand, so the design capacity is generally too large. In actual operation, the proportion of light-load operation time is very high. If frequency conversion speed regulation is adopted, the working efficiency during operation can be greatly improved. Therefore, there is a great potential for energy saving when the frequency converter is used in the air compressor system.

　　4. Some adjustment methods cannot reduce the operating power of the motor even when the demand is small. After adopting frequency conversion speed regulation, when the demand is small, the speed of the motor can be reduced, and the running power of the motor can be reduced, thereby further realizing energy saving.

　　 5. Most single-motor drive systems cannot be adjusted continuously according to the load. After adopting frequency conversion speed regulation, continuous adjustment can be carried out very conveniently, which can maintain the stability of pressure, flow, temperature and other parameters, thereby greatly improving the working performance of the compressor.