THREE-PHASE TWO-LAYER SPLIT (q=3,25) WINDING OF ELECTRIC MACHINES Russian patent published in 2005 - IPC

FIELD: electric engineering and electro-mechanical industry, can be implemented in three-phase asynchronous and synchronous electric machines.

SUBSTANCE: three-phase two-layer split (q=3,25) winding of electric machines is made with grouping 4 3 3 3 2p=8c-polar in z=39c grooves of 12c coil groups with numbers 1Γ...12(c)Γ with concentric coils with their average step of grooves y_c = 5, integer number c = 1, 2, ..., 2w_c coils of each groove. Also, in accordance to invention, in groups 1Γ...4Γ of first group four-coil group 1Γ has coil steps y_πi = 8,6,4,2 with coil numbers (1-x)w_c,w_c,w_c,(1-x)w_c, and three-coil - y_π = 7,5,3 with coil numbers w_c, (1+x)w_c, w_c in group 3Γ with w_c coils in remaining coils of groups, while said distribution of not even-coiled coils is repeated in each following group, where x=0,47.

EFFECT: decreased differential dissipation σ_d of m' = three-zone split (q=z/3p=3,25) winding.

3 dwg