SU1173494A1 - Three-phase pole-switching winding for mechanized laying - Google Patents

Description

1 1 The invention relates to pole-selectable break-ins of AC electric machines and can be used in the manufacture of two high-speed engines. The purpose of the invention is to simplify the manufacturing technology by providing mechanized styling. FIG. 1 shows a schematic scan of the proposed winding; in fig. 2 external switching circuit of the winding with the coupling of phase UUU / y kg. 3 one of the possible options for mechanized laying winding. The winding is placed in the slots 1-36. The coils of the winding are divided into 18 Katouchek groups with numbers 37-54. Coils with a total number of turns w are shown in FIG. 1 with thick solid lines, coils with the number of turns 0.65 w - thin solid lines, and coils with the number of turns 0.35 w dotted lines. Filling all the grooves is the same. Groups containing one coil with the number of turns and the second with the number of turns of 0.65 w are indicated in FIG. 2 large rectangles, coils containing the number of turns w are denoted by smaller rectangles, and coils with the number 0.35 w - squares. The beginnings of the coil groups are indicated by dots. Reel circles are depicted in FIG. 3 in the form of rectangles or polygons that are parts of an end pattern. The height of the sides of the polygons is proportional to the number of turns of the corresponding coils. Group numbers are indicated inside polygons; they also indicate their belonging to the phases when they are connected to the number of poles 42 2p 4. The beginnings of the coil groups are denoted by the letter H, and the ends by the letter K. Within each Russ the intersection of the coils in the frontal parts is excluded. The mechanized installation of the proposed winding is carried out in six steps. The winding ratios of the proposed winding are: KW, 0.966, K 0.814, Kwcp 0.89. The relative value of the differential EMF is close to zero DE 0.0012, i.e. equalizing currents are practically absent. The winding can be laid on modern stand-up equipment for separate laying, as its design satisfies all the requirements placed on the windings for mechanized laying, the winding consists only of concentric coil groups; All coil groups are laid simultaneously on both sides, i.e. Lifting operation is excluded Coil groups can be distributed in sets, within which the intersection of the frontal parts is excluded. Application of the proposed winding will simplify the production technology of two-speed asynchronous motors due to mechanization of winding laying, will reduce additional losses, improve vibro-acoustic characteristics by reducing the magnitude of the differential emf, will provide savings of active materials due to higher energy performance.

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Claims (1)

THREE-POLE SEMI-SWITCHING WINDING FOR MECHANIZED LAYING, made with the number of grooves in multiples of 36, with the ratio of the numbers of poles 2p *: 2p ^ = 6: 4, connected according to the ΥΥΥ · / γγγ circuit, containing coil groups combined in three three-phase stars connected in parallel successive inclusion of coil groups in each phase and has conclusions taken from points of parallel connection of phases, and conclusions taken from zero points of stars, characterized in that, in order to simplify the manufacturing technology by providing mechanized styling and, the winding contains 18 coil groups with numbers 37-54, of which six concentric groups with serial numbers 39, 40, 45, 46, 51, 52 are formed by two coils: one with the number of turns w, and step y = 7 and the other with by the number of turns 0.65 and step y = 5, and are laid by the beginnings of the external coils in the grooves with numbers 5, 7, 17, 19, 29 and 31, respectively, six groups with serial numbers 38, 41, 44, 47, 50 and 53 are formed by one. coil with the number of turns w, and step y = 6 and laid the beginning of the coils in the grooves with numbers 3, 10, 15, 22, 27 and 34, respectively, six groups with serial numbers 37, 42, 43, 48, 49 and 54 are formed by a single coil with a number of turns of 0.35 * x τή and a pitch of y = 7 7 and laid by the beginning of the coils in the grooves with numbers 1, I, 13, 23, 25 and 35, respectively, with the phases of one three-phase star connected to terminal 6C1 include coil groups 52 and 49 for phase 421-6C1, coil groups 40 and 37 for phase 4C2-6C1, coil groups 46 and 43 for phase 4C3-6C1, in phases of another three-phase star connected to clamp 6C2, coil groups 39 and 42 are included, for phase 4C1-6C2, coil groups 45 and 48 for phase 4C2-6C2, coil groups 51 and 54 for phase 4C3-6C2, in phases of the third hfaznoy star attached to the clamp 6SZ incorporated coil groups 44 and 47 - for 4S1-6SZ phase, coil groups 50 and 53 - for phase 4S2-6SZ, Group 38, and 41 - for phase 4СЗ-6СЗ, and coil groups with numbers 37, 39, 41, 43, 45, 47, 49, 51, and 53 are included in the opposite direction with respect to the other coil groups. SU „„ 1173494 1 1173494 2