MULTIPHASE TRANSFORMER Russian patent published in 2007 - IPC H01F30/14 H02M5/14 

FIELD: electrical engineering; transformer manufacture; multiphase static electrical energy converters.

SUBSTANCE: proposed multiphase transformer has internal spiral toroidal core built of two equal-height rings joined together along butt-end rough surfaces by means of adhesive. Bonded to butt-end ground surfaces of mentioned rings are rectangular-shape laminated teeth. Two lateral spiral toroidal cores ground on one butt-end abut against teeth by their ground ends. Multiphase secondary winding is wound on internal magnetic core and placed in slots between teeth, Three-phase primary winding coils are similar coils whose turns are wound on teeth. Coils are interconnected within each phase in series so that magnetic flux set up due to them within internal magnetic core equals sum of magnetic fluxes set up by them in teeth.

EFFECT: enhanced stability of characteristics, facilitated manufacture at high efficiency.

1 cl, 5 dwg