| 摘要 |
FIELD: electricity. ^ SUBSTANCE: present invention relates to electrical engineering specific features of designing stators with two three-phase windings, meant for double-speed asynchronous cage motors. The essence of the invention lies in that, for the double winding stator with m=3 phase 2p1=14k and 2p2=16 k-pole lap windings in z=168k slots, each of which is made symmetrical with an m=6-zone from equally spaced coils, put into 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,Ç, (z-1)K, containing wk1 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,Ç, (z)K, containing wk2 turns and connected into 6p2 coil semi-groups given q'2=7/4, with grouping their coils in a 2 2 2 1 row, which repeats twelve times. All coils have spacing in the slots equal to yk=11, where q'1=z/12p1 and q'2=z/12p2. ^ EFFECT: easier manufacturing of double-winding stators of asynchronous motors, improvement of use of active materials with low input of insulating materials, as well as improvement of electromagnetic parametres of the proposed stators due to reduced slot and differential scattering, compared with common stators with separate different polar single- and double-layer windings. ^ 3 dwg |
