What is the difference between power frequency air compressor and permanent magnet variable frequency air compressor?

Q: What is the difference between power frequency and permanent magnet frequency conversion?

Answer: The motor of the power frequency air compressor runs at a fixed speed and full load every time it starts. The motor of the permanent magnet variable frequency air compressor has less impact on the power grid. It gradually increases the speed to reach the gas pressure and maintains the stable output of the pressure. When the power frequency air compressor reaches the pressure value, it will stop and wait for the next start.

Shanghai Granklin Group produces screw air compressors, including "water-lubricated power frequency air compressors" and "water-lubricated permanent magnet frequency conversion air compressors", and the water-lubricated series of screw air compressors we produce are oil-free.