THREE-PHASE TWO-LAYER SPLIT (q=2,5) WINDING OF ELECTRIC MACHINES

FIELD: electric radio engineering and electric mechanical engineering, possible use in three-phase asynchronous and synchronous electric machines. ^ SUBSTANCE: three-phase two-layer split (q=2,5) winding is made 2p=4c-polar in z=6cq grooves of 6c coil groups: three-coil non-even and two-coil even ones with average step of concentric coils yc z/2pc. In acc to invention, three-coil groups have coil steps ygi=6,4,2 with coil numbers (1-x)wc, (1+x)wc, (1-x)wc, and two-coil groups have steps ygi'=5,3 with coil numbers wc,(1+x)wc, where c=1,2,3,..., - integer number, z=15c, yc=1,5q+0,25=4 and 2wc - number of coils of each groove for value x=0,54. ^ EFFECT: better composition of harmonic operation ampere-turns and decreased differential dissipation sigmad of symmetric m'=3-zone split (q=2,5) winding. ^ 3 dwg