Does the frequency conversion machine speak louder than the ordinary motor?
This is not necessarily, the power of the motor size, also related to the noise of the motor itself, but in the case of the same parameters, the inverter will make voice be larger than ordinary motor, because through the inverter output waveform directly contains a large number of higher harmonic,
And add in waveform on the ordinary motor through a special filter commonly, passes through the filter, plus waveforms on the motor for the standard sine wave, harmonic inside is very good, basically is the fundamental wave, so no noise. It looks something like this.
No, only when the frequency is low. It's basically the same as a normal machine in 10HZ.I hope my answer will help you
