The filter can prevent the occurrence of harmonic interference and suppress harmonics.
The components used in devices such as frequency converters, servos, intermediate frequency furnaces, electric welding machines, UPS/EPS, etc. determine that they will inevitably generate harmonics in the course of operation. Under the current situation, the appearance rate of harmonic interference problems is increasing geometrically. Therefore, from this aspect, it is indeed a very correct and far-sighted decision to install filters in advance to prevent harmonic interference problems.
after the problem of harmonic interference appears, it is necessary to take harmonic suppression measures to solve the problem of harmonic interference. Although the filter is not the only way to solve the problem of harmonic interference, it is a widely used way to solve the problem of harmonic interference.
the filter can effectively suppress differential mode harmonics and * * mode harmonics, not only high-order harmonics, but also high-frequency harmonics, so it is very effective in suppressing harmonics.
technical means of realization:
There are many ways for digital filter to realize signal processing, and two of them are most commonly used in practice. One way is that we integrate various components of integrated circuits into a special device, which is called a digital signal processor, and a digital processor similar to arm architecture or single chip microcomputer architecture is a common one.
This method has high commercial value for the demand of complete batch, and is welcomed by the market because of its low cost. The other is to use the commercial or industrial computer x86/x64 that we usually use for simulation, which is completely simulated by application software. This method is also used in laboratories or large-scale digital filtering projects.
this method has high cost and is not suitable for mass production and matching. But it is the best simulation method in the laboratory and has great advantages in high-order simulation and operation.