FIELD: electric engineering and electro-mechanical industry, possible implementation for construction of three-phase asynchronous and synchronous electric machines.
SUBSTANCE: three-phase split (q=1,75) winding of electric machines is made with grouping 2 2 2 1, two-layered 2p=8c-polar in z=21c grooves of 12c coil groups with numbers 1Γ...12(c)Γ with concentric coils with their average grooves step yc=3, integer value coefficient=1,2,..., and 2wc coils of each groove. In accordance to invention, in groups 1Γ...4Γ of first group two-coil groups have coil steps ygi=4,2 with coil numbers (1-x)wc, wc in group 2Γ, and one-coil 4Γ - yg=3 with coil number (1+x)wc for wc coils in remaining coils of groups, while aforementioned distribution of not even-coiled coils is repeated in each following grouping, where x=0,55.
EFFECT: decreased differential dissipation σd of m'3=3-zone split (q=z/3p=1,75) winding.
3 dwg
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