Which is better, screw frequency conversion or permanent magnet frequency conversion air compressor

Screw variable frequency air compressor and permanent magnet variable frequency air compressor have their own characteristics and advantages, which is better depends on the actual needs and preferences. The following is a comparison of the characteristics of the two air compressors:

screw frequency conversion air compressor:

the motor speed can be adjusted in real time according to the actual gas consumption to control the exhaust volume. When the gas consumption is low, the air compressor can automatically sleep, thereby greatly reducing energy loss.

It can be dynamically adjusted according to demand to maximize energy efficiency.

The frequency conversion technology can make the air compressor adjust the speed according to the change of air demand, realize the dynamic balance of energy consumption, and contribute to energy saving and environmental protection.

permanent magnet variable frequency air compressor:

due to the use of rare earth permanent magnet materials, high efficiency and power factor can be maintained within the rated load range of 25% ~ 120, so that the energy saving effect is more significant when running at light load, and the work efficiency is higher.

The stepless speed regulation characteristic of the frequency converter is adopted, which can start slowly according to the actual demand, quickly adjust and respond to the occasions with large gas fluctuation, so that the gas pressure stability is increased exponentially.

Due to the use of the frequency converter, the starting impact is small, and the impact on the power grid and the entire mechanical system is also small.

The noise is low, because most of the working conditions of the frequency conversion system are lower than the rated speed, which reduces the mechanical noise and wear of the host, and extends the maintenance and service life.

It should be noted that the permanent magnet motor used in the permanent magnet variable frequency air compressor needs bearings and may need to add grease to maintain its normal operation.

In summary, the screw variable frequency air compressor and the permanent magnet variable frequency air compressor have their own advantages. If you pay more attention to energy efficiency and energy saving and environmental protection, the screw variable frequency air compressor may be more suitable; and if you pay more attention to stability, high efficiency and maintenance costs, the permanent magnet variable frequency air compressor may be a better choice. When choosing, you should also consider specific application scenarios, budget and other practical needs.