SU1372482A1 - Single-phase combination electric machine winding - Google Patents

Abstract

The invention relates to windings of electrical machines of alternating current, in the general magnetic core of which two opposite-pole magnetic fields are combined. The purpose of the invention is to expand the field of application of the winding by obtaining the numbers of pairs of poles p, as well as improving the parameters for polarity p by improving the shape of the MDS curve and reducing losses in copper. The electrical single-phase aligned winding is made up of twelve uniformly displaced coils connected in series to two parallel branches, the beginnings and ends of which form clamps for pole p, and the leads from the middle points of the branches form additional clamps for pole polarity. In one branch, coils with numbers 1,4,2,3, t 5, 6 are included, and in the other branch - with numbers 7, 10, 11, 12, 8, 9. The ends of coils 4 and 10 are connected together with an equalizer. These additional clamps you-; are filled from the beginning of the coils 5 and 8. The step of the coils along the grooves is equal to, where is the pole division for pole polarity p ,. 3 il. f (L

Description

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1

The invention relates to windings of electric machines of alternating current with two combined opposite-pole magnetic poles.

The purpose of the invention is to expand the field of application of the winding by obtaining p ,.

Figure 1 shows the scheme of the winding; 2 and 3 are diagrams of EMF coils for p, 12 and respectively.

The winding (figure 1) is made single-phase, single-layer in 24 slots of 12 coils (with numbers from 1 to 12) with a step along the slots where t j. - pole division dl. The coils are connected in series according to two branches: coils 1,4,2,3, 5 and 6 in one and coils 7,10,11,12, 8 and 9 in the other. Their beginnings and ends form clamps A and B for p, 12. The ends of coils 4 and 10 are connected together, and the additional terminals 01 and 02 are made from the beginnings of coils 5 and 8. The upper row of arrows in figure 1 shows the current directions when the winding is fed through terminals A and B with a single-phase current (), and the lower pd is when the winding is fed through the clamps 01 and 02 with a single-phase current (p. 2). In FIGS. 2 and 3, the EMF vectors are assigned the coil numbers. From Fig. 2 dl, it can be seen that the field with this polarity does not induce an emf at terminals 01 and 02, from fig. 3 for P, 2 it can be seen that the field with p 2 does not induce an emf at clamps A and B. Part of the coils (with numbers 1,4,7,10) derived from the dl chain, which improves the parameters for this polarity, improves the shape of the MDS curve, reduces r,. “.

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from 1/3 loss in copper. The winding le winding coefficients (figure 1) are equal for p, 12 Ko5,1,0, for p 2, 0.837.

Compared to the winding, for which p ,, the proposed winding has p, / p, 12/2 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, controlled ferromagnetic reactors, etc.).

Claims (1)

Invention Formula A single-phase electric motor combined winding with a polarity p, / p, made of twelve evenly displaced coils connected in series to two parallel branches, the beginnings and ends of which form clips for polarity p, and conclusions from the middle points of the branches form additional clips for polarity p, characterized in that, in order to expand the field of application by obtaining Pj / Pj 12/2, as well as improving the parameters for polarity p, in one branch include coils with numbers 1,4,2,3, 5,6, and in the other branches - with numbers 7,10,11,12 , 8.9, and the ends of coils 4 and 10 are connected together by equalizer, these additional clamps are made from the beginnings of coils 5 and 8, and the pin coils in the grooves are equal, where T is the pole division for polarity p. j 5 -3 F.