ELECTRIC MACHINE THREE-PHASE DOUBLE-LAYER WINDING AT 2p=22·c POLES IN z=156·c AND z=159·c SLOTS Russian patent published in 2008 - IPC H02K3/04 H02K3/28 

FIELD: electrical engineering.

SUBSTANCE: invention relates to electrical engineering and aims at reducing differential dissipation factor σ_d of the electric machine symmetric divided loop with m'=3-section furnished with (q=52/11 and q=53/11). The invention novelty consists in that the winding at 2p=22·with poles is made up of 3p·c coil groups with the numbers 1"Г"...33"Г"·c, i.e. 1) in z=156·c slots with the number of slots per a pole and phase q=52/11 and the coil group 55545554554, i.e. in the first group 1"Г"...11"Г" the coils feature the pitch over the slots y_si=11, 9, 7, 5, 3 with (1-x)w_c, w_c, (1+x)w_c, w_c, (1-x)w_c turns, while the four-coil windings feature y'_si=10, 8, 6, 4 with w_c, (1+x)w_c, (1+x)w_c, w_c turns at x=0.41, 2) in z=159c slots with the number of slots per a phase and pole q=53/11 and the coil group 55555455554: in the first group 1"Г"...11"Г" feature the pitch over the slots y_si=11, 9, 7, 5, 3 c w_c, w_c, w_c, w_c, (1-x)w_c turns 1"Г", 5"Г", 7"Г", 10"Г" and w_c, w_c, (1+x)w_c, w_c, (1-x)w_c in 3"Г", y_s=7 with (1-x)w_c, w_c, (1+x)w_c, w_c, w_c in 2"Г", 8"Г" w_c, w_c, (1+x)w_c, w_c, (1-x)w_c, in 4"Г", 9"Г" and y'_si=10, 8, 6, 4 with w_c, (1+x)w_c, (1+x)w_c, w_c turns in 6"Г", 11"Г" at x=0.52. The aforesaid distributions of coils with unequal number of turns are repeated in every following group, where c=1, 2, 3...; 2w_c is a number of slots filled completely with the winding.

EFFECT: reducing winding differential dissipation factor.

2 cl, 8 dwg