COMBINED ELECTRICAL MACHINE WINDING Russian patent published in 1995 - IPC

FIELD: electromechanical engineering. SUBSTANCE: combined electrical machine winding with pole pairs p₁/p₂= 4/6 is placed in two slots with slot pitch y_n= Z/8-1= Z/8-1. Winding has K=24 coil groups. It is connected into four three-phase parallel stars: A,B,C three-phase terminals for pole pair p₁; 01-02 additional terminals for pole pair p₂. Connected in series in phase A are coil groups 1 and 13 in first star, 4 and 16 in second star, 7 and 9 in third star, 10 and 22 in fourth star. Midpoint of first and second stars and that of third and fourth stars are interconnected. Finishing lead of group 13 and starting lead of group 16 are connected to additional terminal 01. Finishing lead of group 19 and starting lead of group 22 are connected to additional terminal 02. Groups of phases B and C are alternating in respect to group of phase A. Alternating space for phase B is 4, that for phase B is 8. Symbol at group number means its differential connection. EFFECT: improved design. 3 dwg