The high-efficiency permanent magnet variable frequency motor is the best choice for a screw air compressor drive motor. It is more efficient and energy-saving than an ordinary three-phase asynchronous variable frequency motor!
First, the service life is different. From the perspective of machine service life, permanent magnet variable frequency screw air compressors are better. Due to the inverter drive, the air compressor adopts a soft start when starting, which has a certain protective effect on the motor and reduces the possibility of burning the motor. Second, the energy saving is different. The permanent magnet variable frequency air compressor adopts high-efficiency rare earth permanent magnet motor and frequency converter. These two parts are of great help to the energy saving of the air compressor. Third, maintenance costs also vary. From a maintenance cost perspective, the magneto bearings are greased to eliminate failure points and reduce maintenance costs.
PLC replaces a large number of intermediate relays, time relays, counters and other devices in the relay control system with software functions, which greatly reduces the design, installation and wiring workload of the control cabinet.
The main advantage of this control method is that the torque can be continuously and smoothly adjusted, and the speed adjustment range is wide.
In view of the many advantages of the low-speed and high-torque permanent magnet synchronous motor variable frequency drive system, it is very feasible and effective to apply it to the main inclined shaft belt conveyor.
The magnetic flux leakage of the radial structure permanent magnet synchronous generator is small, and the rotor assembly process is simple.
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