ELECTRIC MACHINE THREE-PHASE DOUBLE-LAYER WINDING AT 2p=26·c POLES IN z=96·c AND z=99·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 (q=32/13 and q=33/13). The invention novelty consists in the following. The winding at 2p=26c poles made up of 3p·c coil groups with the numbers from 1"Г" to 39"Г"·c is configured as follows, i.e. 1) in z=96 c slots with the number of slots per a phase and pole q=32/13 and the coil group in the series 3232323232322, the first group 1"Г"...13"Г" has the three-coil groups with coil pitch over slots y_si= 6, 4, 2 with the number of turns (1-x) w_c, w_c, (1-x) w_c in 1"Г", 11"Г" and (1-x) w_c, (1+x)w_c, (1-x)w_c in 3"Г", 5"Г", 7"Г", 9"Г", while the two-coil windings have y'_si=5, 3 with w_c, (1+x) w_c turns at x=0.44, 2) in z=99c slots with the number of slots per a phase or pole q=33/13 and the coil group in the series 3323232323232, i.e. in the first group 1"Г"...13"Г", the three-coil windings feature the coil pitch over the slots y_si= 6, 4, 2 with the number of turns (1-x) w_c, (1+x) w_c, (1-x) w_c turns and the two-coil windings feature y'_si=5, 3 with w_c, (1+x)w_c turns at x=0.55. 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