SU1377967A1 - Combination single-phase/four-phase electric machine winding - Google Patents

Abstract

The invention relates to windings of brushless electric alternating current machines with two opposite-pole magnetic fields in a common magnetic conductor. The purpose of the invention is to expand the field of application by obtaining the numbers of pole pairs 12/6 with single-phase for p-12 and four-phase for PJ-6 clamps. Winding. made of uniformly offset coils and connected in parallel branches, the beginning and ends of which form single-phase clamps for polarity p, and the leads from their midpoints are additional clamps for polarity Pj. The winding contains twenty-four coils, connected in series in four branches with the numbers 1,5,9,15,19, 23 in the first; -2, -22, -18, -1b, -12, -8 in the second, 3,7,11, 21 in the third -4, -24, -20, -l4, -fO, -6 in the fourth branch x, where the minus sign indicates the counter turn on of the coil in the branch. These additional clamps are made from the mid points of all four branches. The groove pitch of the grooves is equal to C D® - pole division for pole length 3 or less. (L

Description

f S 9 A fS 7g 23

. -fO-yg -yyy

01

3 / / 7.2 / J

02

CO

CO Od 4

  . f {/ e. 2

one

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

The purpose of the invention is to expand the field of application of the winding by obtaining 12/6 with single phase for p 12 and four phase for p .; 6 clamps.

FIG. 1 shows a winding circuit; fig 2 is her EMF chart

13

and

for p, 12; in fig. 3 is its star EMF diagram for pole positions p, 6.

The winding (fig. 1) is single-phase for p 12, single-layer in 48 slots of twenty-four coils (with numbers from 1 to 24) with a step of Ur 4-1 3, where Z 48/12 4 is the pole division for Pi 6, Coils are included in series in four branches with numbers 1,5,9,15,19,23 in the first, -2, -22, -18, -16, -12, -8 in the second, 3, 7, 11, 13, 17.21 in the third, -4, -24, -20, -14, -10, -6 in the fourth branch. Their beginnings and ends form the clamps 01-02 for p, 12, and the terminals from their midpoints are additional four-phase clamps A, B, C, D for p 6. In FIG. 1 upper row of arrows shows the directions of single-phase current when powering the winding through clamps 01-02 (p, 12); lower p d - when the winding is supplied with four-phase current through A, B, C, D. The winding coefficients are equal. for Pi 17 0.707; for p 6-0.924; FIG. 2 and 3 EMF vectors are assigned numbers of coils. From FIG. 2

Phie. one

it is seen,

2

with p,

 12

0

five

50

that the field with the river., I d does not direct the EMF to A, B, C, D. From FIG. 3 that the field with p 6 does not induce an emf to 01-02, i.e. Winding clamps are electromagnetically independent and there are no balancing currents. The skirt can be used, for example, in single-machine frequency transducers and phase numbers, in contactless combined dual-feed machines, etc.

Claims (1)

Invention Formula A single-phase four-phase electric winding with pole P, / P2, made of uniformly displaced coils and connected in parallel branches, the beginnings and ends Q of which form single-phase clamps for polarity p. - additional clamps for PJ polarity, tol and h and y with the fact that, in order to expand the scope of application by obtaining p. / p 12/6 with single-phase for p. 12 and four-phase for p 6 clamps The winding contains twenty-four coils, connected in series in four branches with numbers 1,5-, 9,15,19,23 in the first, -2, -22, -18, -16, -12, -8 in the second, 3,7,11,13,17, 21 in the third, -4, -24, -20, -14, -10, -6 in the fourth branch the step of the coils in pa-. deputy equals division for t. Where / pole R g a minus sign before the number of the coil means its counter inclusion in the branches. Ql7 ll 21 2if jy, f . ftsg.Z