POWER THREE-PHASE HARMONIC FILTER FOR SUPPLY CURRENT OF NON-LINEAR LOADS Russian patent published in 2013 - IPC H02J1/02 H01F38/06 

FIELD: electricity.

SUBSTANCE: power filter contains: phase windings of inductors 1-3 connected by their starts to filter inputs 4-6; resonant secondary windings 7-9 connected by their ends to phase windings ends of inductors 1-3 and by their starts to the first outputs of capacitors 10-12; resonant third windings 13-15 to which second outputs capacitors 19-24 (or 25-27) are connected by the first outputs. The second outputs of capacitors 10-12 depending on hardware version are connected either to adjacent outputs of the filter 16-18 and to the first outputs of capacitor 19-24 (or 25-27) or to starts of adjacent resonant secondary windings 7-9 and thus form connection of capacitors into a triangle or connected to adjacent outputs of filter 16-18 or interconnected and form star-connection. The second outputs of capacitors 25-27depending on hardware version are connected either to second outputs of capacitors 10-12 thus forming a triangle-connection or interconnected thus forming star-connection or they are connected to ends of second windings 7-9.

EFFECT: expanding functionality due to improvement of consumed current quality, improving weight and dimensions of the system, increasing reliability.

9 cl, 9 dwg