DOUBLE-WINDING STATOR WITH m=3-PHASE 2p=6·k- AND 2p=8·k-POLE LAP WINDINGS IN z=144·k SLOTS Russian patent published in 2009 - IPC H02K3/04 H02K17/12 

FIELD: electricity.

SUBSTANCE: present invention pertains 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 2p₁=6·k- and 2p₂=8·k- pole lap windings of a stator in z=144·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=144·k slots, each of which is made symmetrical 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=4 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 into 6p₂ coil semi-groups with q'₂=3 neighbouring coils in each. All coils have uneven spacing in the slots, equal to y_k=19, or y_k=21, where k=1, 2 given 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.

3 dwg