THREE-PHASED TWO-LAYERED ELECTRO-MECHANICAL WINDING WITH 2p=14c POLES WITHIN z=90c GROOVES Russian patent published in 2006 - IPC H02K3/28 H02K3/04 

FIELD: electric engineering, possible use for technologies of electro-mechanical engineering, engineering and production of three-phased asynchronous and synchronous devices.

SUBSTANCE: three-phased two-layered electro-mechanical winding having 2p=14c poles within z=90c grooves with grouping of coils in accordance with row 5 4 4 5 4 4 4, repeated further for 3c times, is made of 3p=21c coil groups with numbers 1Γ,... 21(c)Γ, with serial and matching connection of groups in phases and average step of concentric coils across grooves being equal to value y_c=6. In accordance to the invention, in first grouping 1Γ,...7Γ inner coils of groups 1Γ,4Γ,5Γ,7Γ with groove step y_g=6 first and fifth coils of groups 1Γ,4Γ have (1-x)w_c coils each, and second coil of group 5Γ and third coil of group 7Γ have (1+x)w_c coils each. In concentric groups 2Γ,3Γ,6Γ with groove steps y_gi=9,7,5,3 coils with step y_gi=7 have (1+x)w_c coils each, and coils with groove step y_gi=3 of group 6Γ have (1-x)w_c coils each, while remaining coils of groups have w_c coils each. Distribution of not even-coiled coils with coils unevenness coefficient being equal to value x=0,38, as described in detail above, is repeated for each following grouping of coils in accordance with aforementioned row, while c=1,2,3.

EFFECT: decreased differential dissipation.

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