DOUBLE-WINDING STATOR WITH m=3-PHASE 2p=10- AND 2р=14-POLE LAP WINDINGS IN z=168 SLOTS Russian patent published in 2009 - IPC H02K17/14 H02K3/04 H02K3/28 

FIELD: electrical engineering.

SUBSTANCE: invention relates to electrical engineering and electrical machine building and can be used in three-phase double-speed cage asynchronous motors. Each of the 3-phase windings with m=3-phase 2p₁=10- and 2p₂-14-pole lap windings in z=168 slots of the double-winding stator of the asynchronous motor is symmetrical with m'=6-zone from uniformly displaced windings, placed in slots in two layers. According to this invention: of the K = z windings with numbers from 1K to (z)K, the 2p₁ - pole winding relates to K/2 windings with odd numbers 1K, 3K, …, (z-1)K, each containing w_k1 turns and connected in 6p₁ sub-groups of windings with q'₁ = 14/5 with grouping of their windings in a series 33332, repeated six times, and the 2p₂ - pole winding relates to K/2 windings with even numbers 2K, 4K,…, (z)K, each containing w_k2 turns and connected in 6p₂ sub-groups of windings with q'₂=2 neighbouring windings in each. All windings have slot pitch y_k= 13, where q'₁ = z/12p₁ and q'₂ = z/12p₂.

EFFECT: easier manufacture and increased use of active materials while reducing amount of insulating materials used and differential scattering coefficients.

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