The difference between permanent magnet frequency conversion and power frequency and power saving

There are significant differences between permanent magnet frequency conversion and power frequency air compressor in terms of working principle, efficiency, noise and energy saving. The following are the specific differences between the two and the power saving advantages of permanent magnet variable frequency air compressor:

1. permanent magnet frequency conversion and frequency of distinction:

1. working principle:
   • the permanent magnet variable frequency air compressor adopts permanent magnet motor and variable frequency speed regulation technology. The motor rotor is made of permanent magnet material, which has high energy efficiency and stable magnetic field characteristics. The motor speed is precisely adjusted by the frequency converter to realize the rapid response to the fluctuation of gas consumption and the on-demand output of gas supply.
   • The power frequency air compressor runs at a fixed speed, and the air supply cannot be adjusted in real time according to actual needs.
2. Efficiency and energy saving:
   • the permanent magnet variable frequency air compressor can adjust the motor speed according to the actual gas consumption, avoid unnecessary energy loss, and realize constant pressure gas supply, thereby improving work efficiency and energy utilization.
   • The power frequency air compressor is still running at full speed under partial load or no load, resulting in large energy consumption and relatively low efficiency.
3. Noise:
   • the variable frequency air compressor works below the rated speed under most working conditions, reducing the mechanical noise and wear of the host, and extending the maintenance and service life. If the fan is also driven by variable frequency, the noise of the air compressor can be significantly reduced.
   • The power frequency air compressor runs at a constant fixed power and cannot adjust the speed according to the load demand, which may produce large mechanical vibration and airflow dynamic noise under partial load or no load.

Power saving advantages of 2. permanent magnet variable frequency air compressor:

• the permanent magnet variable frequency air compressor shows significant advantages in power consumption through intelligent variable frequency technology and permanent magnet motor design. It can adjust the motor speed according to the actual gas demand, thereby reducing energy consumption.
• When the gas demand is reduced, the permanent magnet variable frequency air compressor reduces the motor speed, thereby reducing power consumption. In contrast, the power frequency air compressor can not achieve such a regulation function, resulting in a large amount of power consumption when the demand is reduced.
• The permanent magnet motor does not need excitation current to generate a magnetic field, which reduces the consumption of reactive power. At the same time, it can still maintain high efficiency at low speed, further reducing power consumption.

In summary, the permanent magnet variable frequency air compressor has obvious advantages in energy saving, efficiency and noise control compared with the power frequency air compressor.