| 摘要 |
FIELD: electrical engineering. ^ SUBSTANCE: invention relates to electrical engineering and aims at reducing differential dissipation factor sigmad of the electric machine symmetric divided loop with m'=3-section furnished with (q=48//11 and q=48/13). For this, the three-phase machine winding at 2p=22c poles and with z=144c slots feature the following, i.e. 1) at 2p=22c poles with the number of slots per a pole and phase q=z/3p=48/11 is made up of 3pc coil groups with the numbers from 1"" to 33""c and the coil group in the series 54554554554 repeated 3c times, i.e. in the first group 1""...11"", the five-coil windings feature the coil pitch over the slots ysi= 11, 9, 7, 5, 3 with (1-x)wc, wc, wc, wc, (1-x)wc turns, while the four-coil windings feature ysi = 10, 8, 6, 4 with wc, wc, (1+x)wc, wc turns at x=0.38, 2) at 2p=26c poles with the number of slots per a phase and pole q=z/3p-48/13, the winding is made up of 3pc coil groups with the numbers from 1"" to 39"" and the coil group in the series 4443443443443 repeated 3 c times, i.e. in the first group 1""...13"", the four-coil windings feature the coil pitch over the slots ysi=9, 7, 5, 3 with (1-x)wc, wc, (1+x)wc, (1-x)wc turns, while the three-coil windings feature y'si = 8, 6, 4 with wc, (1+x)wc, (1+x)wc turns at x=0.40, where c=1, 2, 3,...; 2wc is a number slot coils completely filled with winding. The aforesaid distributions of coils with unequal number of turns are repeated in every following group. ^ EFFECT: reducing winding differential dissipation factor. ^ 2 cl, 8 dwg |
