Rare earth material technology gives higher possible rotating speeds, wider operating range and higher energy efficiency to the permanent-magnet synchronised motors.
Within their wide operating speed range the Permanent Magnet Variable Frequency rotary screw air compressors are able to maintain extremely high motor efficiency compared to those using conventional drive motors. Kaishan’s Permanent Magnet Variable Frequency Rotary Screw Air Compressors operate at peak efficiency even with 80% reduction in air output.