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

FIELD: electrical engineering; multiphase semiconductor converters such as rectifiers, inverters, and frequency changers.

SUBSTANCE: intermediate magnetic circuit of proposed multiphase transformer is laminated structure of different-profile stacks with slots on butt-end, internal, and side surfaces accommodating three-phase and multiphase windings. Two extreme stacks of intermediate laminated magnetic circuit have slots throughout entire height of coil group. Central part of intermediate laminated magnetic circuit has slots at external and internal surfaces of laminated magnetic circuit wherein winding turns are placed. Additional magnetic circuits are twisted slotless structures.

EFFECT: enhanced efficiency, improved electromagnetic compatibility with other pieces of electrical equipment.

1 cl, 4 dwg