SU1372485A1 - Combined single-phase electric machine winding - Google Patents

Abstract

This invention relates to windings of electrical machines of alternating current. The purpose of the invention is to expand the field of application by obtaining P ,, as well as improving the parameters for polarity p. The winding is made of six evenly displaced coil groups and connected in two parallel branches, the beginning and the ends of which form clamps for polarity p, and the leads from their midpoints are additional clamps for polarity p. In one branch are connected in series according to the group with numbers 1, 3, 5, in the other branch with numbers 4, 6, 2, moreover, the ends of groups 1 and 4 are connected together with an equalizer, these additional clamps are made from the beginning of groups 5 and 2, and the groove pitch of the grooves is 2 D -z pole division for polarity p. 2 Il. eaten

Description

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four;

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fig.}

The invention relates to windings of electric machines of alternating current with two combined fields in a common magnetic core.

The purpose of the invention is to expand the scope by obtaining p, / / P, 6/1, as well as improving the parameters for polarity p.

FIG. 1 shows a winding circuit; in fig. 2 - EMF diagram for p, 6.

The winding (fig. 1) is single-phase with p, -6, single-layer in 12 slots of six coils (with numbers from 1

c2 - pole division

She branches

for

connected in two parallel with numbers 1,3,5 in one

up to 6) with a groove step

Where

R, 1 x

and 4,6,2 in another branch x. The ends of coils 1 and 4 are connected together by an equalizer. The beginnings and the ends of the branches form clamps A and B for p, 6, and additional clamps 01 and 02 for p 1 are made from the beginnings of groups 5 and 2. The upper row of arrows in FIG. Figure 1 shows the directions of a single-phase current when powering the winding through clamps A and B (), and the lower row when powering the winding with direct current through clamps 01 and 02 (). A part of the coils is removed from the circuit for p 1, which improves the winding parameters for this pole position: the shape of the VAT curve is improved and the loss in copper is reduced (by 1/3). Winding ratio for p, 6, 0. FIG. 2 EMF vectors are assigned coil numbers, whence it is clear that the field with p, 6 does not induce an EMF at terminals 01 and 02. When winding in slots

0

five

0

five

0 Q

five

whose number is a multiple of 12, each coil group contains a number of coils equal to that multiplicity.

I

Thus, compared with a winding with p, the proposed winding has p, and improved parameters for polarity p. It can be used in electromachine devices with two opposite-pole magnetic fields (single-machine frequency converters and phase numbers, ferromagnetic controlled reactors, etc.).

Claims (1)

Invention Formula Combined and single-phase electric winding with pole, made of six evenly displaced coil groups and connected in two parallel branches, the beginning and ends of which form clips for polarity p, and conclusions from their midpoints - additional terminals for pole polarity p, which differs - that, in order to expand the field of application by obtaining p, / and improving the parameters for the polarity PJ, in one branch are connected sequentially according to the group with numbers 1,3,5, in the other branch with numbers 4, 6, 2, with the ends of the groups 1 and 4 soybeans ineny together equalizer, said additional clamps made from started groups 5 and 2, and the coil pitch of the grooves is equal to 1 1, where - for the polarity division polyusyoe p ,.