SU1252867A1 - Stator of three-phase electric machine - Google Patents

Abstract

The invention relates to the field of electrical engineering. The purpose of the invention is to increase the reliability of the three-phase electric stator. machines by eliminating the interfacial closure. A single-layer three-phase coil winding is made with the number of grooves per pole and phase equal to two, with the number of coils equal to the number of poles. Each phase, for example A, contains coils 1-6. The intersection points 7 of the coils of different phases are located at a greater distance from the stator magnetic circuit than the intersections of the coils of the same phase. The pitch of the winding along the grooves y - z / zp 1, where Z is the number of grooves of the magnetic circuit, and the distance between adjacent coils of each phase is one notch smaller than the pitch of the winding. When molding and bandaging the frontal parts during the shear of the insulating gasket, the intersection points of the different phases will remain reliably isolated, I il. C /) o Ci Sat Cz Cj

Description

one

The invention relates to electrical engineering, in particular to the construction of the stators of electric machines.

The purpose of the invention is to improve the reliability of the stator of a three-phase electric machine by eliminating the interphase closure.

The drawing shows the layout of the three-phase single-layer coil winding with the number of pairs of poles R 3 in the slots of the stator.

The number of stator slots is 36. Step

the windings are y + 1 and equal to seven grooves, and the distance between adjacent coils of the same phase is six grooves, i.e. the first coil of phase A, for example, occupies the slots from the first to the eighth, the second katushka from the seventh to the fourteenth, the third from the thirteenth to the twentieth.

At the same time, despite the change in the winding pitch, the pole zone of the stator does not change and, therefore, elec

flow of the same phase, and the frontal parts of the coils of different phases at this level, i.e. when exiting the grooves of the magnetic conductor, they are diverted to different sides and do not intersect.

The 7-intersection points of the frontal parts of the coils of different phases are at a considerable distance from the magnetic conductor, and when forming and bandaging the frontal fO parts, if the insulating gasket moves, then the intersections of the coils of different phases will remain reliably isolated. .

Claims (1)

5 claims The stator of a three-phase electric machine, contains. magnetic core with the grooves and the coil installed in them three-phase single-layer winding with the number of coils equal to the number of poles and the number of grooves per pole and phase equal to two, characterized in that in order to increase the reliability of the machine does not change , the winding pitch y along the grooves is made with. Each phase, for example A, contains coils 1-6. The intersection points 7 of the coils of different phases are located at a greater distance from the stator magnetic circuit, thirty equal to one, z 2p than the intersection of the coils of one phase. With such an arrangement of the windings at the exit from the magnetic circuit, the frontal parts of the neighboring Kutgde Z intersect - the number of the magnetic grooves; p is the number of pairs of poles, and the distance between adjacent coils of each phase is one notch smaller than the winding pitch. Editor P.Kossey Compiled by V. Komarov Tehred M. Khodanich Proofreader M. Demchik Order 4627/53 Circulation 631 Subscription VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Production and printing company, Uzhgorod, st. Project, 4 252867 flow of the same phase, and the frontal parts of the coils of different phases at this level, i.e. when exiting the grooves of the magnetic conductor, they are diverted to different sides and do not intersect. The 7-intersection points of the frontal parts of the coils of different phases are at a considerable distance from the magnetic conductor, and when forming and bandaging the frontal fO parts, if the insulating gasket moves, then the intersections of the coils of different phases will remain reliably isolated. . 5 claims The stator of a three-phase electric machine, contains. magnetic core with the three-phase single-mounted slots with the number of coils, races, and the number of notches equal to two, in that, for the purpose of this, the winding pitch y along equal to one, z 2p the three-phase coil single-layer winding installed in them with the number of coils equal to the number of poles and the number of grooves per pole and phase equal to two, characterized in that, in order to increase reliability, the step of winding along the grooves is performed where Z is the number of slots of the magnetic circuit; p is the number of pairs of poles, and the distance between adjacent coils of each phase is one notch smaller than the winding pitch.