THREE-PHASE TWO-LAYER ELECTRIC MACHINE WINDING IN z=186·c SLOTS WITH 2p=22·c AND 2p=26·c POLES Russian patent published in 2009 - IPC H02K3/04 H02K3/28 

FIELD: electricity.

SUBSTANCE: application: electric machine industry. The task consists in lowering the differential leakage factor σ_d of symmetrical m'=3-zone electric machine fractional (q=62/11 and q=62/13) loop winding. To do this three-phase two-layer electric machine winding in z=186-c slots is made of 3p·c coil groups. 1) with 2p=22·c poles with number of slots per pole and phase q=62/11 and grouping 66566566565: in the first grouping "1 Г...11 Г" the coils have slot pitch y_"п"i=13-2(i-1) for groups of six- and y'_"п"i =12-2(i'-1) five-coil with (1-x)w_k turns of coils i=1, 6 and (1+x)w_k of coils i=i'=3 with w_k turns in the rest coils in groups and value of x=0,58; 2) with 2p=26·c poles with slot number per pole and phase q=62/13 and grouping 5555455545554: in the first grouping "1 Г...13 Г" five-coil groups have slot pitch y_"п"i =11-2(i-1)·c (1-x)w_K by turns of coils i =5 for "1Г", "4Г", "6Г", "8Г", "10Г", "12Г", (1-x)w_k in i=1 and (1+x) w_k in i=3 for "7Г", "11Г", y_"п"=7·c (1+x)w_K in i=3 for "2Г", "3Г" with (1-x)w_k in i=1 for "2Г" and in i=5 for "3Г", and four-coil - y'_"п"i =10-2(i'-1) with (1+x)w_k by turns in i'=2, 3 with w_k turns in the rest coils of groups when x=0.49. Such distributions of nonequalturn-coils repeat in each consequent grouping where c=1, 2, 3; i and I' - coil sequential numbers in groups; 2w_K - number of turns in slots fully filled with winding.

EFFECT: lowering the differential leakage factor σ_d of symmetrical m'=3-zone electric machine fractional (q=62/11 and q=62/13) loop winding.

2 cl, 8 dwg