SU1203637A1 - Combined stator winding - Google Patents

Description

The invention relates to windings of electric machines of alternating current and can be used in combined electric machines, for example, in single-cell converters of frequency and number of phases, in motors with a rolling rotor, etc.

The purpose of the invention is to expand the field of application of the winding by obtaining the number of pairs of poles

FIG. 1 shows a diagram of the proposed winding; in Fig.2, the EMF diagram for polarity p, 6 Winding (Fig, 1) is single-layer in 36 slots of 18 cd bushes (numbered from 1 to 18) with pitch Va 3 equal to pole division for polarity p, 6,. The winding is connected in three parallel stars (FIG. 2), the beginnings of which C1, C2 and C3 form .fractal clamps for polarity p, 6, and the terminals of zero points of the first and third stars 01 and 02 form additional clamps for polarity Pr 5 (zero point second the stars are indicated in figs, 1 and 2 through 0).

In the star phases, the coils are connected in series — according to S in phase C 1 — the coils with numbers 13 and 16 are included in the first star, 1 and 10 in the second star, 4 and 7 in the third star. In phase C2, coils 2 and 5 are included in the first star, 8 and 17, into the second

poles

star, 11th and 14th in the third star. In the NW phase, coils 6 and 9 of BK1 (yucheny in the first star, 3 and 12 - in the second star, 15 and 18 in the third star. The arrows in Fig. 1 show the direction of currents when the winding is fed through the clips C1 - NW three-phase current (upper pd, p, 6) and when powered through clips 01-02-constant current (lower pd,).

The EMF vectors (Fig. 2) are assigned coil numbers, therefore the field with a polarity of p1 6 at the zero points of the stars does not induce an emf and the clamps 01-02 can be fed with a constant current. This current does not flow around the coils of the second phase stars, as a result of which the winding parameters for

; reduced by

1/3 loss in copper and improved shape of the MDS curve.

poles

equals k

Thus, the proposed winding is equivalent to two independent windings: three-phase for polarity p, 6 and direct current winding for polarity pg 5. Compared to the known winding for which p. / P2 6/1, the proposed winding has an extended range of its winding ratio for polarity is p 6

ABOUT. b

 1.0

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Editor I. Derbak

Compiled by A. Ketsar 1c

Tehred A.Kikemezey Proofreader L. Pilipenko

Order 8427/58 Circulation 645Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-355, Raushsk nab., 4/5

Branch ShSh Patent, Uzhgorod, st. Project, 4

Claims (1)

COMBINED STATOR WINDING with the numbers of pairs of poles p, / p ₂ , made of eighteen distribution. 'Flaxen coil groups and connected in three parallel three-phase stars, the beginnings of which form three-phase clamps from for the pole p,, the conclusions of their zero points form two Figure 1 additional clamp for the poles of the p ₂ group, it is clear that, in order to expand the scope by obtaining the number of pairs of poles p, / p ₂ = 6/5, in the first phase included coil groups with numbers 13 and 16 in the first star, 1 and 10 in the second star, 4 and 7 in the third star, in the second phase groups 2 and 5 are included in the first star, 8 and 17 in the second star, 11 and 14 in the third star, in the third phase are included groups 6 and 9 to the first star, 3 and 12 to the second star, 15 and 18 to the third star, and the additional clamps of the first and third stars shek is equal to the pole division for the pole STI p. made from zero points, and step katu1203637