Why should the air compressor use the inverter?
In the air compressor market today, the frequency conversion screw air compressor, permanent magnet variable frequency screw air compressor, two-stage compression permanent magnet frequency conversion air compressor and other series are all controlled by frequency converter to realize the frequency adjustment and stability of the air compressor. The outlet pressure of the air compressor realizes the automatic switching of the industrial frequency conversion.
The air compressor is generally selected according to the actual demand of the cooling capacity of the design working condition. Under normal circumstances, the compressor works all the year, spanning the extreme weather in winter and summer, so it faces a relatively complicated external environment, and the actual working conditions and design. There is inevitably a certain deviation between the schemes, so the compressor power has a more appropriate margin.
At this stage, air compressor energy adjustment mainly includes intermittent control operation, suction adjustment, cylinder unloading, bypass adjustment and infinitely variable speed adjustment. Among them, the intermittent operation of the compressor is a relatively common operation mode. When the ambient temperature is higher than the set temperature, the compressor will start running, the ambient temperature will drop below the set temperature, and the compressor will stop working. This mode of operation is suitable for situations where the ambient temperature is relatively stable and the load is not large, but in actual use, the ambient temperature does not stabilize at any time. In extreme weather and complex working conditions, various production activities will cause changes in the cooling load, frequent temperature changes, frequent engine start and stop, resulting in greater energy waste.
The instantaneous current of the generator will pollute the power grid, increase the fluctuation of the power grid, and the life of the compressor will also be affected. Therefore, the frequency conversion technology has also gained more applications in the compressor.
Under certain working conditions, the compressor cooling capacity is proportional to the mass flow. The basic idea of frequency conversion regulation is to adjust the mass flow by changing the compressor motor speed, thus changing the total unit cooling capacity.
