THREE-PHASE SPLIT (q=5,75) WINDING FOR ELECTRIC MACHINES Russian patent published in 2005 - IPC

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

SUBSTANCE: three-phase split (q=5,75) winding of electric machines is made with grouping 6 6 6 5, two-layered 2p=8c-polar in z=69c grooves of 12c coil groups with numbers 1Γ...12(c)Γ with concentric coils with their average grooves step y_c=9, integer value coefficient=1,2,...,numbers i',i=1...6 coils in groups starting from outer one, 2w_c for each groove. In accordance to invention, in groups 1Γ...4Γ of first group six-coil groups have coil steps y_gi=14-2(i-1) with coil numbers (1-x)w_c in i=6 of groups 1Γ,3Γ and in i=1 of group 2Γ, (1+x)w_c in i=4 of group 2Γ, and five-coil 4Γ - y'_gi=13-2(i'-1) with coil numbers (1+x)w_c in i'=3 and 4 for w_c coils in remaining coils of groups, while aforementioned distribution of not even-coiled coils is repeated in each following grouping, where x=0,47.

EFFECT: decreased differential dissipation σ_d of m'3=3-zone split (q=z/3p=5,75) winding.

3 dwg