The original permanent magnet inverter has so many advantages! No wonder its popular everywhere!

Time：2020-10-12 Number：464 Back to list >>

1. Energy conservation
Compared with ordinary screw compressors, the permanent magnet variable frequency screw air compressor has the most practical significance of energy saving. It is the most economical operation state to provide air source according to the air demand, saving more than 20% of the electricity cost, and the funds of the variable frequency part can be recovered in about one year.

Permanent magnet motor

2. Reduced operating costs
The operation cost of traditional compressor consists of three items: initial procurement cost, maintenance cost and energy cost. Among them, the energy cost accounts for about 77% of the operating cost of the compressor. The permanent magnet variable frequency screw air compressor reduces the energy cost to 44.3% through variable frequency operation. In addition, the impact on the pen after variable frequency starting is reduced, and the amount of maintenance and repair is also reduced, so the operation cost will be greatly reduced.

3. Improve pressure control accuracy

The variable frequency control system of permanent magnet variable frequency screw air compressor has accurate pressure control ability. Match the air pressure output of the compressor with the air volume required by the user's air system. The output air volume of the frequency conversion control compressor changes with the change of the motor speed. As the accuracy of variable frequency control motor speed is improved, it can keep the system pressure change of pipe network within ± 0.01Mpa, and effectively improve the quality of working conditions.

4. Extend the service life of the compressor

The frequency converter of permanent magnet variable frequency screw air compressor starts the compressor from OHz, and its starting acceleration time can be adjusted, so as to reduce the impact on the electrical and mechanical parts of the compressor during starting, enhance the reliability of the system and prolong the service life of the compressor.

5. Improve the operation efficiency of transformer and power grid

The current fluctuation at the moment of starting or loading of ordinary units will affect the power consumption of power grid and other equipment. The variable frequency unit of permanent magnet variable frequency screw air compressor can start and operate smoothly, and the peak value of effective starting current can be reduced to the minimum, so as to improve the operation efficiency of transformer and power grid.

6. Noise reduction and environmental protection

Under normal working conditions, the motor speed of the permanent magnet variable frequency screw air compressor is only 60% ~ 70% of the rated speed, which effectively reduces the noise during the operation of the air compressor. Field measurements show that the noise is about 3 to 7 decibels lower than that of traditional ancestor worship.

〈Main engine speed and tooth tip speed of screw air compressor

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