ELECTRIC MACHINE THREE-PHASE DOUBLE-LAYER WINDING WITH z=135·c SLOTS AT 2p=22·c AND 2p=26·c POLES 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=45/11 and q=45/13) poles. For this, the three-phase machine winding and z=135c slots feature the following, i.e. 1) at 2p=22·c poles with the number of slots per a pole and phase q=z/3p=45/11 is made up of 3p·c coil groups with the numbers from 1"Г" to 33"Г"·c and the coil group in the series 54444444444 repeated 5c times in the first group 1"Г"...11"Г" wherein coils feature the pitch over the slots as follows, i.e. y_si=10, 8, 6, 4, 2 with (1-x)w_c, w_c, w_c, w_c, (1-x)w_c turns in 1"Г", y'_si=9, 7, 5, 3 with w_c, (1+x)w_c, w_c, (1-x)w_c in 6"Г",7"Г", y'_si=6, 6, 6, 6 with w_c, (1+x)w_c, w_c, (1-x)w_c in 2"Г", 3"Г", 4"Г", 5"Г" and with (1-x)w_c, w_c, (1+x)w_c, w_c in 8"Г", 9"Г", 10"Г", 11"Г" at x=0.48; 2) at 2p=26·c poles that feature the number of slots per a pole and phase q=z/3p=45/13 is made up of 3p c coil groups with numbers from 1 "Г" to 39"Г" c and the coils groups in the series 4343434343433 repeated 3 times in the first group 1"Г"...13"Г", i.e. the coils feature the pitch over the slots y_si=8, 6, 4, 2 with (1-x)w_c, w_c, w_c, (1-x)w_c turns in 1"Г", 11"Г" and (1-x)w_c, (1+x)w_c, w_c, (1-x)w_c in 3"Г", 5"Г", 7"Г", 9"Г", y'_si=7, 5, 3 with w_c, (1+x)w_c, w_c turns at the rest groups at x=0.44. 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 coil turns filled completely with the winding.

EFFECT: reducing winding differential dissipation factor.

2 cl, 8 dwg