| 摘要 |
FIELD: electrical and electromechanical engineering; three-phase induction and synchronous machines including slip-ring induction motors. ^ SUBSTANCE: proposed asymmetric three-phase fractional-slot m' = 3-band double-layer winding with 2p = 6c poles in z = 48c slots and with slot number per pole per phase q = z/3p = 16/3 has 3pc coil groups 1G through 9G with coil grouping 6 5 5 5 5 6 5 6 5 repeated c times. Novelty is that pole pitch of concentric coils of coil groups ypi = 13 - 2(i - 1) and turn number (1 - x)wc for coils with i = 1, 6 and turn number (1 - x)wc, for coil with i = 3 in six-coil groups 1G, 6G, 8G, slot pitches y'pi = 12 - 2(i' - 1) and turn number (1 - x)wc for coil with i' = 3 in all five-coil groups at turn number (1 - x)wc for coils with i' = 1 in coil groups 3G, 4G and for coils with i' = 5 in coil groups 7G, 9G; for coil groups 2G, 5G turn number y'pi = 8 = (1 - x)wc for coil with i' = 5 in coil group 2G and for coil with i' = 1 in coil group 5G; turn number in remaining coils of coil groups equals wc, where c = 1, 2, 3 ...; i = 1 - 6 and i' = 1 - 5 are coil numbers in coil groups starting from external one; 2wc is turn number in slots completely filled with winding; x = 0.5. ^ EFFECT: reduced asymmetry and differential scatter ratios. ^ 1 cl, 4 dwg |
