2026-04-10Views：
Permanent magnet frequency conversion air compressor has become a hot spot and bright spot in the industry due to its energy-saving and high-efficiency characteristics. The original energy-consuming air compressor on the market is gradually being replaced or replaced by permanent magnet frequency conversion air compressor, which can directly bring users 20%-40% cost savings.
With the development of science and technology, air compressor as an important power equipment, is widely used in machinery, metallurgy, building materials, electronic power, chemical industry, food, textile and many other industrial fields. However, the air compressor is a high energy consumption equipment, in some industries accounted for more than 30% of the production of electricity consumption, so commonly known as "electricity".
Why permanent magnet variable frequency air compressor will be welcomed by the market? At present, the permanent magnet variable frequency air compressor in full swing has been widely used in industry, and it can not help but remind people of the power frequency driven air compressor. So, what is the difference between the two?
1. permanent magnet variable frequency air compressor with stable air pressure
because the variable frequency screw air compressor uses the stepless speed regulation characteristics of the frequency converter, it can start smoothly through the controller or the PID regulator inside the frequency converter. On occasions with large fluctuations in gas consumption, it can quickly adjust the response. Compared with the upper and lower limit switch control of power frequency operation, the pressure stability is improved exponentially.
2. permanent magnet variable frequency air compressor starts without impact
since the inverter itself contains the function of soft starter, the starting current is larger within 1.2 times of the rated current, and the power frequency starting is generally more than 6 times of the rated current, the starting impact is very small. This impact is not only on the power grid, but also on the entire mechanical system.
Variable Flow Control of 3. Permanent Magnet Variable Frequency Air Compressor
the power frequency driven air compressor can only work in one exhaust volume, and the variable frequency air compressor can work in a relatively wide range of exhaust volume. The frequency converter is based on the actual gas consumption to adjust the motor speed in real time to control the displacement. When the gas consumption is low, the air compressor can also be automatically dormant, thus greatly reducing the loss of energy. The optimized control strategy can further improve the energy saving effect.
4. Permanent Magnet Variable Frequency Screw Air Compressor AC Power Supply Voltage Adaptability Better
due to the over-modulation technology adopted by the inverter, it can still output enough torque to drive the motor when the AC power supply voltage is slightly lower; when the voltage is slightly higher, it will not cause the voltage output to the motor to be on the high side. For self-generating occasions, variable frequency drive can show its advantages. According to the characteristics of the motor VF (the variable frequency air compressor works below the rated voltage in the energy-saving state), the effect is obvious for the field with low grid voltage.
5. permanent magnet frequency conversion energy-saving air compressor with low noise
most of the working conditions of the frequency conversion system are lower than the rated speed, and the mechanical noise and wear of the main engine are reduced, which prolongs the maintenance and service life. If the fan is also driven by variable frequency, the noise of the air compressor can be significantly reduced.
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