ELECTRIC MACHINE THREE-PHASE DOUBLE-LAYER WINDING AT 2p=22·c POLES IN z=150·c AND z=153·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=50/11 and q=51/11). The three-phase machine winding at 2p=22·c poles made up of 3p c coil groups with the numbers 1"Г"...33"Г" c, i.e. 1) in z=150·c slots with the number of slots per a phase and pole q=50/11 and the coil group in the series 55454545454, i.e. in the first group 1"Г"...11"Г" the five-coil windings feature the coil pitch over the slots y_si=11, 9, 1, 5, 3 with the number of turns (1-x)w_c, (1+x)w_c, w_c, (1-x)w_c and the four-coil windings feature y'_si=10, 8, 6, 4 with w_c, w_c, (1+x)w_c, w_c turns at x=0.55, 2) in z=153c slots with the number of slots per a pole and phase q=51/11 and the coil group in the series 55455455454, i.e. in the first group 1"Г"...11"Г", the five-coil windings feature the coil 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'=10, 8, 6, 4 with w_c, w_c, (1+x)w_c, w_c turns at x=0.56. 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