| 摘要 |
FIELD: stator windings of multipole synchronous and induction machines. SUBSTANCE: three-phase fractional-slot (q=12/7) double-layer winding with pole number 2p=14 in slots z=72 has uniformly shifted coils at slot pitch yassembled into 6p=42 coil groups numbered 1G through 42G with coils grouped there in row 2 2 2 1 2 2 1 repeated six times. First phase has series-connected groups number 1G+(3c)G with differentially connected even-numbered groups relative to odd-numbered ones; two other phases have groups whose numbers alternate at intervals of 2p=14 and 4p=28 groups. Novelty is that first and second coils in two-coil groups have turn number (1-x)wand (1+x)wfor groups (1G+7C)G and 5G+(7C)G, (1-x)wfor each of groups 2G+(7C)G, (1+x)wand (1-x)wfor groups 3G+(7C)G and 6G+(7)G; coil of single-coil groups 4G+(7C)G and 7G+(7C)G have turn number (1+x)w, where y=6; k= 1,1, . ..,(2P-1); C=0,1,2,...,(p-2); 2•wis turn number per slot; parameter "x" is chosen within the range of 0,20≅ x≅ 0,35.. EFFECT: improved electromagnetic parameters of winding with fractional slot per pole per phase due to reducing its differential dissipation. |
