MAGNET-SCREENED THREE-PHASE ROTATING TRANSFORMER HAVING 3 MAGNETIC HEARTS Russian patent published in 2017 - IPC H01F38/18 H01F30/12 H01F27/28 

FIELD: electricity.

SUBSTANCE: three-phase transformer (10) contains the primary (11; 12) and secondary (12; 11) parts. The primary part (11) comprises a first body of ferromagnetic material, and primary windings. The secondary part (12) comprises a second body of ferromagnetic material and secondary windings (28, 29a, 29c, 30). The first housing has a first annular groove (22) of the axis A and a second annular groove (23) of the axis A. The primary windings comprise the first toroidal winding (24) of the axis A in the first groove (22), the second toroidal winding (27) of the axis A in the second groove (23) and one or more third toroidal windings (25a, 25d) connected in series. The third windings (25a, 25d) are wound around one of the said supports and pass through the slots (36) therein.

EFFECT: simplification of manufacturing.

9 cl, 14 dwg