Screw air compressor frequency conversion and power frequency which is better

In the air compressor market is the frequency and frequency conversion screw air compressor comparison has not stopped, so in the end frequency and frequency conversion screw air compressor which is better?

Insert: The main difference between the power frequency and the variable frequency screw air compressor is that the variable frequency air compressor joins the frequency converter, and the frequency converter is used to control the actual input power to achieve the purpose of energy saving and electricity saving.

Air compressor-frequency conversion screw air compressor

1. start without impact:

the inverter itself contains the function of a soft starter. The maximum starting current is within 1.2 times of the rated current, while the power frequency starting is generally more than 6 times of the rated current, and the starting impact is very small. This impact is not only on the power grid, but also on the entire mechanical system.

Low 2. noise:

most of the working conditions of the frequency conversion system are lower than the rated speed, the main machine mechanical noise and wear are reduced, and the maintenance and service life are extended;

3. pressure stability:

the variable frequency screw air compressor uses the stepless speed regulation characteristics of the frequency converter, and can start smoothly through the controller or the PID regulator inside the frequency converter. For occasions with large fluctuations in gas consumption, it can quickly adjust the response;

4. AC power supply voltage adaptability is better:

1. For self-generating occasions, variable frequency drive can show its advantages;

2. Due to the over-modulation technology adopted by the inverter, sufficient torque can still be output when the AC power supply voltage is slightly lower to drive the motor to work; when the voltage is slightly higher, it will not cause the voltage output to the motor to be on the high side;

3. According to the characteristics of the motor VF (the variable frequency air compressor works below the rated voltage in the energy-saving state), the effect is obvious for the field with low grid voltage.

5. variable flow control:

the frequency converter is based on the actual gas consumption to adjust the motor speed in real time to control the displacement. Therefore, the variable frequency air compressor can work in a relatively wide range of exhaust volume.