ELECTRIC MACHINE THREE-PHASE DOUBLE-LAYER WINDING IN z=177·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=59/11 and q=59/13). The invention novelty consists in that the aforesaid winding is made in z=177·c slots at 2p=22·c poles with the number of slots per a pole and phase q=59/11 up of 3p·c coil groups with the numbers 1"Г"...33"Г"·c and the coil group in the series 6 5 6 5 5 6 5 5 6 5 5 repeated 3·c times. Note, that in compliance with the first version, in the first group 1"Г"...11"Г", the group coils feature the pitch over the slots y=13-2 (i-1) four six-coil groups and y'=12-2 (i'-1) for five-coil groups with the number of turns as follows, i.e. (1-x)w_c in coils i=1, 6; (1+x)w_c in coils i'=3 and w_c turns in the remaining coil groups at x=0.38. In compliance with the second version, the proposed winding is made in z=177·c slots at 2p=26·c poles with the number of clots per a phase and pole q=59/13 from 3p·c coil groups with the numbers 1"Г"...39"Г"·c and the coil group in the series 5 5 4 5 4 5 4 5 4 5 4 5 4, repeated 3·c times. Note that in the first group 1"Г"...13"Г", the group coils feature the pitch over slots y=11-2(i-1) for five-coil groups and y'=10-2(i'-1) for four-coil groups with the number of turns as follows, i.e. for four-coil groups with the number of turns (1-x)w in coils i=1, 5; (1+x)w_c in coils i=i^'=3 and w turns in the remaining coil groups 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