Active Filter for Middle Voltage Networks
The use of hybrid active filters for higher harmonics filtering and transient damping in 3-35 kV electrical networks as an inexpensive alternative to passive resonant filters is considered. It is shown that the hybrid active filter of the AFD type, installed on 10 kV buses, supplying a powerful rectifier operating in a cyclic load mode, reduces the level of canonical and non - canonical harmonics by more than 3 times, and the interharmonic components of the voltage - to minor residues.