COMBINED WINDING OF ELECTRIC MACHINE Russian patent published in 1995 - IPC

FIELD: electric machine engineering. SUBSTANCE: combined winding of electric machine with numbers of poles P₁/P₂ is dropped in Z slots, has slot pitch y_s=Z/8+1= Z/8+1 and is connected in four parallel three-phase stars. Winding has three-phase leads-out A, B, C for number of poles P₁ and additional leads-out 01-02 from zero points of stars. Winding includes 24 coil groups. Coil groups of phase A are connected in series to groups 1 and 16 in first star, to groups 19 and 22 in second star, to groups 7 and 4 in third star, to groups 13 and 10 in fourth star. Midpoints of first and second stars and of third and fourth stars are tied up together in phases. Starts of groups 16 and 22 are coupled to additional lead-out 01, of groups 4 and 10 to additional lead-out 02. Interval of alternation of groups with respect to groups of phase A amounts to 8 groups in phase B and to 16 groups in phase C. Z/24 is integral number and minus sign in front of group number means that it is connected in opposition. EFFECT: enhanced operational capabilities, expanded application field. 3 dwg