How to distinguish between frequency conversion and power frequency for air compressor

Stable 1. pressure

the variable frequency 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. It can adjust the response quickly when the gas consumption fluctuates greatly.

2. start without impact

the frequency converter of the permanent magnet variable frequency air compressor itself contains the function of a soft starter. The starting current is less than 1.2 times of the rated current, while the power frequency starting is generally more than 6 times of the rated current. Compared with the frequency conversion, the starting impact is very small. This impact is not only on the power grid, but also on the entire mechanical system.

3. variable flow control

the frequency conversion air compressor frequency converter is based on the actual air 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.

4. AC power supply voltage adaptability

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

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

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.

Low 5. noise

most of the working conditions of the frequency conversion system are lower than the rated speed, and the mechanical noise and wear of the main engine are reduced, which effectively extends the maintenance time and service life.