Permanent magnet screw variable frequency air compressor is an advanced air compression equipment that combines permanent magnet synchronous motor and frequency conversion technology. It is characterized by high efficiency, energy saving, stability and reliability.
[pdf] Permanent magnet motors (PMMs), especially permanent magnet synchronous motors (PMSMs), have become a game-changer in air compressor systems. These motors use strong rare earth magnets, like neodymium-iron-boron (NdFeB), to make a steady magnetic field.
[pdf] When matching motor characteristics to compressor requirements, one should consider factors such as voltage, phase, and duty cycle. The motor’s rated horsepower should ideally be closely matched to the compressor’s demands to ensure optimal performance.
[pdf] 
