SU1112492A1 - Combined stator winding - Google Patents

Abstract

COMBINED STA-TORAH WINDING, performed with the numbers of pairs of poles Ptlp from eighteen distributed cathode groups connected in parallel three-phase stars, the beginnings of which form three-phase clamps for polarity p and from their zero points, additional clamps for polarity p are used, distinguished by the fact that expanding the area of its application by obtaining p, / / P "/ 2 as well as improving the parameters for polarity rd, the winding is connected in three stars and in the first, second and third stars are connected in series according to groups with numbers 4 and 13, respectively, I n 10.7 and 16 in the first phase, 5 and 14.2 and 11, 8 and 17 in the second phase, 3 and 12, 6 and 15, 9 and 18 in the third phase, with two additional clamps are made from the zero points of the first and third stars, and the coil pitch is equal to threefold pole division for the memory p ,.

Description

l 18 J 2 3 5 6 7 in 9 SG C2 CJ

YU

JF {/g./ 10 11 12 / J 14 15 16

The invention relates to windings of alternating current electric machines of the combined type and can be used, for example, in single-machine frequency and number of phase converters.

Known servo-mixed electric windings with the numbers of pole pairs, 1/6, made of distributed coil groups and connected in phases into two parallel branches, the beginnings of which form three-phase clamps for polarity P | and their ends are connected in two additional terminals for polarity p, (1.

Closest to the invention to the technical essence is the combined winding of electric machines of alternating current made with the numbers of pairs of poles p,; / p 6/9 of eighteen distributed coil groups connected in phases into two parallel branches, the beginnings of which form three-phase clamps for polarity p, and their ends are connected in two zero pins, forming the terminals for the polarity of PJ 2.

The disadvantage of both windings is limited scope.

The purpose of the invention is to expand the field of application by obtaining p, / p 6/2, as well as improving the winding parameters for polarity p. This goal is achieved in that in the combined winding of electric machines, made with the numbers of pairs of poles of dew distributed coil groups parallel three-phase stars, the beginnings of which form three-phase clamps for the polarity p, and from their zero points additional clamps for the polarity Pj, are made; the winding is connected in three stars and in the first, second and third stars including The yens are sequentially according to the group with numbers 4 and 13.1 and 10, 7 and 16 in the first phase, 5 and 14 2 and P, 8 and 17 in the second phase 3 and 12 6 and 15.9 and 18 in the third phase, respectively. moreover, two additional clamps are made from the zero points of the first and third stars, and the coil pitch is three times pole division for polarity p.

FIG. I shows a diagram of the proposed winding; in fig. 2 is the integral curvature of the MDS winding for the polarity PJ, 2; in fig. 3 shows a winding emf for polarity p 6.

The winding (fig. 1) is made single-layer in 36 slots from 18 distribution coil groups (with numbers from 1 to 18) with a step along the grooves beats 9.

The winding is connected in three parallel stars, the beginnings of which form three-phase clamps C1, C2, Sz for polarity p, 6. In the first, second, third stars are connected in series according to the group with numbers 4 and 13.1 and 10.7 and 16 in the first phase 5 and 14.2 and 11, 8 and 17 in the second phase, 3 and 12.6 and 15.9 and 18 in the third phase. Two additional clamps 01-02 for the polarity of p 2 are made from the zero points of the first and third stars.

The upper row of arrows in FIG. Figure 1 shows the directions of the windings through the clips C1, C2, and Sz by three-phase current (PI 6), and the lower pd, when the windings are fed through the clips 01 and 02 by direct current (p, 2). In the directions of the direct current in the winding of FIG. 2 built interparial curve MDS.

On the EMF diagram for polarity p, 6 (Fig. 3), the numbers of groups are assigned to the EMF vectors. From FIG. 3 it is visible that the alternating field with polarity r, 6 on clips 01 and 02 does not induce EMF. The winding ratio of the winding for polarity is p, 6 is equal to Ko «, 1.0.

 The coils of the proposed winding are removed from the circuit between terminals 01 and 02, which improves the winding parameters for polarity pt 2: it reduces by 1/3 the loss in copper, improves the shape of the MDS curve.

Thus, the proposed winding, as compared with the known one, has an expanded field of application, as well as improved parameters for polarity p. It can be used in electromachine and electromagnetic devices with two combined magnetic fingers.

Ti :;

FIG. 2

Claims (1)

OPEN WINDING STA'TORA executed with numbers of pole pairs p, _r 1p distributed eighteen coil groups connected in parallel to the three-phase star, the start of which form a three phase terminals of the pole P and to their datum performed additional clamps to the polarity p wherein _g that in order to expand the scope of its application by obtaining p _t l 1 p _g = 6/2 and also to improve the parameters for the pole p _{2, the} winding is connected in three stars and the first, second and third stars are connected in series - according to the groups s with numbers respectively 4 and 13, I n 10.7 and 16 in the first phase, 5 and 14.2 and VI, 8 and 17 in the second phase, 3 and 12, 6 and 15, 9 and 18 in the third phase, with two additional clamps made from the zero points of the first and third stars, and the step of the coils is three times the pole division for the pole p ,. ' _E