SU1387103A1 - 3-phase-4-phase superposed winding for electric machine - Google Patents

Abstract

The invention relates to windings of brushless electric machines of alternating current of the combined type with two polarized magnetic fields in a common magnetic circuit. The purpose of the invention is to expand the field of application of the three-phase-four-phase winding by obtaining the polarity p, / p 4n / 3m. Winding, ka is made of twenty fours) ex evenly displaced coils and connected into four parallel three-phase stars, the beginnings of which form three-phase clamps C1, C2, 03 for polarity p, and the outputs from their zero points form additional cheflastic phase clamps for polarity p. To obtain p, / Pj 4/3 in each star two coils with numbers in phase C1 for the first star 1 and 4 are connected in series, and for each subsequent star of this phase the numbers of the coils alternate with respect to the previous star with an interval of six coils and their spacing grooves equal y ,. For phases C2 and NW, the numbers of the coils of stars of each subsequent phase alternate with respect to the stars of the preceding phase with an interval of eight coils, a minus sign means the coil being turned on in the star, and y, +, where t, is the pole division for polarity p, . To obtain p, / p 8/9, the numbers of coils in phase C1 and 4, and y,. 2 hp ff, 2 tabl .., 6 ill. (C (L

Description

2 f 2 J 4- 5 67 8 9 W 11 12 13 M 15 16 17 G8 J9 20212223

00

00

vl

one

f / C2

NW

/ 7 B Rig. /

WP Pz00

with

eight

The invention relates to windings of an alternating-type AC electric machine with two opposite-pole magnetic fields in a common magnetic circuit.

The aim of the invention is to expand the field of application of the winding by obtaining p4 / p ,.

FIG. 1 shows a winding scheme with pi / Pi A / 3; in fig. 2 shows EMF diagrams for polarity in FIG. 3 is the same for polarity in FIG. 4 .- winding circuit with p, / p, j, 8/9; in fig. 5 EMF diagrams for the pole position in FIG. 6 - the same for pole position.

The winding (FIGS. 1 and 4) is made single-layer in 48 slots of twenty-four coils (with numbers from 1 to 24) in increments along the grooves for FIGS. 1 and 3 for FIG. 4 ,. where Γ is the pole division for polarity P ,. It is connected into four parallel three-phase stars, the beginnings of which form m 3-phase clamps C2, C2, Sz for polarity p, and the outputs from them zero points are additional m 4-phase clamps A, B, C, D for polarity Pj. In each star, two successive stars are included in the star, in phase C1, for the first star numbers 1 and K, and for each successive star of this phase, the coil numbers alternate relative to the previous star with six coil intervals for the C2 and NW phases. each subsequent phase alternates with respect to the stars of the previous phase with an interval of eight coils (Tables 1 and 2). 71l of winding with (figure 1 value and minus sign means the coil in the star in the star (table 1), for winding figure 4 with 8/9 value and plus sign means the coil is enabled in the star (table 2).

In Figures 1 and 4, the upper row of arrows shows the directions of the three-phase current when the winding is powered through C1, C2, C3, and the lower row shows the directions of the four-phase current when the winding is fed through A, B, C, D. In Fig.2 and 3.5 and 6 sectors of the EMF, the assignment of the number of coils, from which it can be seen that the field with pole p, does not induce EMF at terminals A, B, C, D (Figures 2 and 5), and the field with pole Pj does not induce emf on

0

five

0

0

five

0

clips C1, C2, Sz (fig.Z and 6), i.e. opposite-pole winding clamps are electromagnetically independent and, therefore, equalizing currents in it do not flow. The winding factors are: for the winding of FIG. 1 - Kgg 0.966 and BER, 0.906, for the winding of FIG. 4 - - K ,, ,, 0 and, 906.

In comparison with the known winding, the proposed winding has expanded values of the numbers of pole pairs. It can be used, for example, in single-machine frequency and phase converters, in contactless combined dual-power machines, etc.

Claims (3)

1. Three-phase-four-phase combined electric-machine winding with a polarity p, / pj, made of twenty-four uniformly displaced coils and connected in four parallel three-phase stars, the beginnings of which form a three-phase clamp: C1, C2, C3 for polarity p, and the outputs from their zero points form additional four-phase clamps for polarity p, which is so as to expand the field of application by five 0 five p, / p 4n / 3m, where p and m are multiples of the numbers of pairs of poles p, and p, in each phase the coils of the star are connected in series to two coils, and for each succeeding star the phases of the coil number alternate relative to the previous star with an interval of six coils, for phases C2 and C3 each subsequent phase alternates with respect to the previous phase with an interval of eight coils. 2. The winding according to claim 1, that is, so that, in order to obtain in phase C1 for the first star, a coil with numbers 1 and 4, with the coils having a groove spacing equal to,. 3. Wrapping according to claim 1, and being so that, in order to obtain P, / P, j, 4/3, in phase C1, for one star, coils with numbers 1, -4, and 4 are included. have a groove pitch: equal to ti + l, where the minus sign in front of the number of the coil group means its opposite inclusion, and is the pole pressure for polarity p,. C1 C2 NW 1, -47, -10 9, -12 15, -18 17, -20 23, -2 t, 3 C1 1,47,10 C2 9.12 15.18 SZ 17.20 23.2 Gablitz 1 13, -1619, -22 21, -243, -6 5, -811, -14 .Table 2 19.22 3.6 11.14 -12 -20 -It b Р11г.з  Time. 15 faz. five Phage.