The Input AC reactor is a current-limiting device mainly used for the input side of the drive so as to protect the exchange drive from the influence of the transient overpressure. It can also reduce the surge and peak current, increase the real power factor, restrain the harmonic wave in power grid and improve the function of the input current waveform.
The output AC reactor is mainly used for the smoothing filtering. By reducing the transient voltage dv/dt, it extends the service-life of the electrical machine. This equipment is also applied to reduce the noise of the electrical machine, the eddy-current loss and the leak current caused by the output of the higher harmonic. Moreover, it is also employed to protect the power switching components inside the inverter.