THREE-PHASE 12-ZONE TWO-LAYER STATOR WINDING WITH REDUCED CONTENT OF HIGHER SPATIAL HARMONICS IN MAGNETOMOTIVE FORCE Russian patent published in 2020 - IPC H02K3/28 

FIELD: electrical equipment.

SUBSTANCE: invention relates to electrical engineering, in particular to stator windings of three-phase alternating current electrical machines, and can be used in their design. Three-phase 12-zone two-layer alternator winding machine stator winding with number of slots per each pair of poles equal to 24 (z/p = 24), consists of two three-phase windings shifted by 30 electric degrees, one of which is connected by star circuit, the other one is triangle circuit. Number of turns in phases of star w_phY and phases of triangle w_phΔ satisfies the equality and sections of winding wires (S_w): . In order to attenuate the higher spatial harmonics in the MDS, each coil group consists of 4 coils with a different number of turns such that they form a certain fraction of the entire area of the slot occupied by the windings: 1 coil - 0.25; 2 coil - 0.75; 3 coil - 0.75; 4 coil - 0.25.

EFFECT: technical result is weakening of higher spatial harmonics.

1 cl, 2 dwg, 1 tbl