DOUBLE-WINDING STATOR WITH m=3-PHASE 2p=6·k- AND 2p=8·k-POLE LAP WINDINGS IN z=72·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 manufacture and increase use of active materials while reducing input of insulating materials and lowering coefficient of differential scattering σ_d% m=3-phase 2p₁=6·k- and 2p₂=8·k-pole lap windings of a stator with z=72·k slots. The essence of the invention lies in that, the double-winding stator of an asynchronous motor has m=3-phase 2p₁=6·k- and 2p₂=8·k-pole lap windings in z=72·k slots, each of which is made from m=6-zone from equally spaced coils, put into the slots in two layers. According to this invention: from K=z coils with numbers from 1K to (z)K, the 2p₁ pole winding relates to K/2 coils with odd numbers 1K, 3K,…(z-1)K, containing w_k1 turns and connected into 6p₁ coil semi-groups with q'₁=2 neighbouring coils in each. 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, to 6p₂ into alternating double- and single-coil semi-groups. All coils have spacing in the slots, equal to y_k=9, where k=1, 2, 3; q'₁=z/12p₁ and q'₂=z/12p₂.

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

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