MULTIPHASE TRANSFORMER Russian patent published in 2005 - IPC

FIELD: transformer manufacture; multiphase semiconductor power converters.

SUBSTANCE: intermediate spiral core of transformer is built of two equal-height rings stuck together at butt-end rough surfaces, ring height being equal to height of rings of side cores. Three-phase primary winding and multiphase secondary winding are placed in slots formed by rectangular teeth stuck to outer butt-end ground surfaces of intermediate-core rings and welded to them over external and internal generating lines. Teeth are laminated structures made of cold-rolled electric steel, their rolling orientation being unidirectional with magnetic flux.

EFFECT: enhanced efficiency, reduced mass, facilitated manufacture.

1 cl, 2 dwg