THREE-PHASED SPLIT (q=6,75) WINDING FOR ELECTRIC MACHINES Russian patent published in 2006 - IPC H02K3/28 H02K3/04 

FIELD: electric engineering and electro-mechanical industry, possible use for construction of three-phased asynchronous and synchronous electric machines.

SUBSTANCE: three-phased split (q=6,75) winding of electric machines is made with grouping 7 7 7 6, two-layer 2p=8c-polar in z=81c grooves of 12c coil groups with numbers 1Γ...12(c)Γ with concentric coils with their average step by grooves y_c=10, integer number c=1,2,..., numbers i',i=1...7 coils in groups, starting from external one, 2w_c coils of each groove. In accordance to invention, in groups 1Γ...4Γ of first grouping, seven-coil groups have coil steps y_gi=16-2(i-1) with coil number (1-x)w_c in i=7 of groups 1Γ, 3Γ and in i=1 of group 2Γ, (1+x)w_c in i=4 of group 2Γ, and six-coiled 4Γ-y'_gi=15-2(i'-1) with coil numbers (1+x)w_c in i'=3 and 4 for w_c coils in remaining coil groups, while aforementioned distribution of not even-coiled coils is repeated in next grouping, where x=0,48.

EFFECT: decreased differential dissipation σ_D of m'=3-zoned split (q=z/3p=6,75) winding.

3 dwg