为什么永磁变频空压机会受到市场欢迎呢？当前如火如荼的永磁变频空压机在工业上得到大量的运用，也不禁让人想起工频驱动的空压机。那么，二者到底有什么区别呢？
Why is the opportunity of permanent magnet variable frequency air compressor welcomed by the market? At present, the permanent magnet variable frequency air compressor in full swing has been widely used in industry, which can not help but remind people of the air compressor driven by power frequency. So, what is the difference between the two?
一、气压稳定
1、 Barometric stability
由于变频化的螺杆空压机利用了变频器的无级流水槽模具 u型槽模具 电缆槽模具 隔离墩钢模具 护坡砖模具 钢制闸门 螺杆式启闭机 卷扬式启闭机调速特点，通过控制器或变频器内部的PID调节器，能平缓启动；对用气量波动比较大的场合，又能快速调节响应。
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; In case of large fluctuation of gas consumption, it can quickly adjust the response.
与工频运行的上下限开关控制相比，气压稳定性成指数级的提高。
Compared with the upper and lower limit switch control of power frequency operation, the air pressure stability is improved exponentially.
二、启动无冲击
2、 Start without impact
由于变频器本身含概了软启动器的功能，启动电流最大在额定电流的1.2倍以内，与工频启动一般在额定电流的6倍以上相比，启动冲击很小。
Since the frequency converter itself includes the function of soft starter, the maximum starting current is less than 1.2 times of the rated current, and the starting impact is very small compared with that of power frequency starting, which is generally more than 6 times of the rated current.
这种冲击不仅是对电网的，对整个机械系统的冲击，也大大减少。
This impact is not only to the power grid, but also to the whole mechanical system, but also greatly reduced.