关于变频器的英语论文和翻译3000字

Frequency changer's harmonic interference is biggest, although you added the reactor, but the reactor can only filter out part of higher harmonics, some part of higher harmonics cannot filter, adds the shielded wire relations with you, it was through the electrical network transmission in the past. did not have better means to process the higher harmonic disturbance at present. Our company's product have also encountered this kind of situation, does not have the better solution. can only be you understood that your measuring appliance the big subharmonic disturbance, is added the big reactor. the only solution does not use the frequency changer. the other Simens's frequency changer disturbance can slightly small. the frequency changer output side adds the filter, cuts frequency changer's carrier frequency suitably, controls uses the far-end hanging near-end earth with the shielded wire. The number place must certainly be separated with frequency changer's earth,