SU1210179A1 - Combined winding for electric machine - Google Patents

Description

I

The invention relates to coiled electric windings and can be used, for example, in single-machine frequency and phase converters, AC cascade machines, etc.

The purpose of the invention is to expand the field of application of the winding by obtaining the numbers of pairs of poles P, / i 9/2.

Figure 1 shows the unfolded diagram of the proposed winding, figure 2 shows the EMF diagram for polarity.

The winding (figure 1) is made single-layer in 54 grooves with polarity of 27 reel groups (numbers 1-27) with steps of coils Y ,, 15, where t 54/18 3 is pole division (in grooves) for polarity P., 9. The winding is connected to two parallel three-phase stars and has three-phase clamps for polarity P (clamps C1, C2, NW) and additional clamps 01 and 02 for polarity. phase stars with groups 1,4,16-, 19 in the first star, 10,13,22,25 in the second star. In the second phase, the beginning of the coil 14 forms the clamp of phase C2 and the beginning of the star phase with coils 2,5,17,20 in the first star, 8,11,23,26 in the second star, are connected to its end, in the third phase

2101792

 21 forms the clamping phase of the Sz and the beginning of the star phase with coils 3.6 is connected to its end, in the first star, 9,12,24,27 in the second star 5 The upper row of arrows (figure 1) shows the direction of currents when the winding is fed through the clamp C1 C1 and Sz three-phase current (), and the lower p d - when the power winding through

10 clamps 01 and 02 direct current ().

The EMF vectors (figure 2) are assigned the coil numbers, and from the EMF diagram you can see. that field with polarity R, 9

ts on. the clamps 01-02 do not induce an emf. When the winding is supplied through the clamps 01-02, the direct current does not flow around the coil 7514.21, as a result of which the winding parameters for the

20 poles, copper losses are reduced, the shape of the GVA curve is improved.

Thus, the proposed winding allows to obtain the number of pairs

The 25 poles Р / РТ 9/2 and in comparison with the known winding have an extended scope. It can be used in electromachine and electromagnetic devices with

30 two combined magnetic fields (single-machine converters, ferromagnetic controlled reactors with a rotating magnetic field, etc.)

Winding winding ratio (figure 1) for polarity P, 9 is equal to

35

1COB9 b bout

Circulation 632

Order 528/57 Subscription

Branch of TShP Patent, Uzhgorod, Proektna St., 4

Claims (1)

COMBINED ELECTRIC MACHINE WINDING with the numbers of pole pairs P ₄ / P _g made of twenty seven distributed coil groups and connected in two parallel three-phase stars with three-phase clamps for P ₁ pole and two additional clamps for P ₁ pole. , in the stars of the phases of which the coil groups are connected in series according to which, in order to expand the scope by obtaining / p _r = 9/2, in the first phase the beginning of group 7 forms a phase clamp and the beginning of the stars of the phase are connected to its end groups 1,4,16,19 in the first star, 10, 13, 22, 25 in the second star, in the second phase the beginning of group 14 forms a phase clamp and the beginning of phase stars with groups 2,5,17, 20 in the first star, 8,11, 23, 26 - in the second star, in the third phase the beginning of the corpse - § 21 forms a phase clamp and the ends are connected to its end and stars of the phase with groups 3,6,15,18 in the first star, 9,12,24,27 in the second star, and the step of the coils is 5 I,, where L ' ₁ - pole division for pole SU, 1210179 FIG. 1