| 摘要 |
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 2p1=12- and 2p2=14-pole lap windings in z=144 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, Ç, (z-1)K, each containing wk1 turns and connected in 6p1 sub-groups of windings with q'1 =2 neighbouring windings in each, and the 2p2 - pole winding relates to K/2 windings with even numbers 2K, 4K,Ç, (z)K, each containing wk2 turns and connected, when q'2=12/7, in 6p2 sub-groups with grouping of their windings in a series 2221221, repeated six times. All windings have slot pitch yk= 11, 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, slot and differential scattering coefficients. ^ 3 dwg |
