How does a high-efficiency permanent-magnet variable-frequency motor save power significantly?
Permanent-magnet variable-frequency air compressor adopts high-efficiency permanent-magnet motor + frequency converter (PM motor). Screw-master and high-efficiency permanent magnet motor share the same main shaft. The motor has no bearing. The rotor with permanent magnet is directly installed on the protruding shaft of the male rotor. On the transmission efficiency 100%. This structure eliminates the point of failure of conventional motor bearings and enables motor-free maintenance. The rare earth permanent magnetic material has excellent magnetic properties. After being magnetized, it no longer needs external energy to build a strong permanent magnetic field, which is used to replace the electric excitation magnetic field of the conventional motor. The high efficiency permanent magnet frequency conversion motor is not only highly efficient but also has a simple structure. , reliable operation, but also to achieve small size and light weight. It can not only achieve the high performance (such as special high efficiency, special high speed, high response speed) that can not be compared with the traditional electric excitation motor, but also can be made into special motors that can meet specific operation requirements, such as elevator traction motors, automobile special motors, etc. .
At present, high-efficiency permanent-magnet variable-frequency motor is the best choice for screw air compressor drive motor. It is more efficient and energy-saving than ordinary three-phase asynchronous variable-frequency motor.
