TRANSFORMER, CONTAINING THREE-PHASE AND CIRCULAR WINDINGS Russian patent published in 2016 - IPC H01F30/14 

FIELD: electricity.

SUBSTANCE: invention relates to electrical engineering and can be used in multiphase semiconductor converters, rectifiers, inverters, reversible converters, DC voltage converters. Transformer comprises three-phase and circular windings and formed of two parts: outer and inner magnet cores containing equal odd number of semi-closed slots, multiple of three made to full height of coil groups. Said windings are arranged in slots of inner and outer magnet cores, respectively, and made as drum equal coiled double-layered, have fractional number of slots per pole and phase and shortened pitch. Magnetic axis of the three-phase winding is inclined relative to circular winding magnetic axis by one slot pitch, which provides for suppression of magnetic field higher spatial harmonic components and slot ripples, spaced apart at different magnetic cores. Windings have improved cooling conditions, thereby reducing specific consumption of materials for manufacture of transformer.

EFFECT: technical result consists in improvement of magnetization curve, higher efficiency and power factor.

1 cl, 4 dwg