What is the use of variable frequency speed control for screw air compressor?
Stable air pressure
Because the frequency conversion screw air compressor utilizes the stepless speed regulation characteristic of the frequency converter, the PID regulator inside the controller or the frequency converter can realize rapid adjustment control of the pressure. The air pressure stability is exponentially increased compared to the upper and lower limit switch control of the power frequency operation.
2. More energy efficient
Although the screw air compressors of various manufacturers adopt different energy-saving operation modes, the inverters can adjust the motor speed in real time according to the actual gas consumption. When the gas consumption is low, the air compressor can automatically sleep, thus greatly reducing energy. Loss. It should be noted that the difference in system control methods has a great impact on energy saving effects.
3. Start without impact
Since the inverter itself is a soft start device, the starting current is about twice the rated current, and the starting shock is small compared with the power frequency starting, which is generally more than 6 times the rated current. This kind of impact is not only on the grid, but also on the entire mechanical system, and it is greatly reduced.
4. Low noise
Since the operating frequency is lower than the power frequency during stable operation, the mechanical noise is reduced and the mechanical wear is small.
5. Impact on gas storage tanks
The storage tank capacity requirements are small.
