DOUBLE-WINDING STATOR WITH m=3-PHASE 2p=12·k- AND 2p=14·k-POLE LAP WINDINGS IN z=126·k SLOTS Russian patent published in 2009 - IPC H02K3/04 H02K17/12 

FIELD: electricity.

SUBSTANCE: present invention relates to electric machine engineering. The invention seeks to simplify manufacturing and increase use of active materials, while reducing input of insulating materials and coefficient of differential scattering σ_d% m=3 phase p₁=12·k and 2p₂=14·k - pole lap windings in z=126·k slots. The essence of the invention lies in that, for the double winding stator of an asynchronous motor with m=3 phase 2p₁=12·k- and 2p₂=14·k- pole lap windings in z=126·k slots, each of which is made symmetrical with an m=6-zone from equally spaced coils, put into slots in two layers: from K=z coils with numbers from 1K to (z)K, the 2p₁ pole winding relates to K/2 coils with even numbers 1K, 3K,…, (z-1)K, containing w_k1 turns and connected into 6p₁ coil semi-groups, given q'₁=7/4 and with grouping of their coils into a 2 2 2 1 row, which repeats nine times. The 2p₂ pole winding relates to K/2 coils with even numbers 2K, 4K,…, (z)K, containing w_k2 turns and connected, given q'₂=3/2, into 6p₂ alternating double- and single-coil semi-groups. The spacing of all coils in the slots equals y_k=9, where k=1, 2 when q'₁=z/12p₁ and q'₂=z/12p₂.

EFFECT: easier manufacturing and increases use of active materials, while reducing input of insulating materials and coefficient of differential scattering.

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