Grid operations on a very high level can be divided into two distinctly different operations: either the grid tied inverter is supporting the grid or actively maintaining it.
When it comes to the world of AC drives, there are two variations on the topic of noise: audible noise, typically generated by cooling fans, and electromagnetic noise emanating from the AC drives on various frequency bands.…
The so-called AFE (active front end) technique has rapidly become popular when the target is low harmonic levels. This article however challenges AFE as the most frequently used solution for harmonic dampening. Should you care about harmonics?