SU1377965A1 - Combination single-phase/m2-phase electric machine winding - Google Patents

Abstract

The invention relates to the windings of electric brushless AC machines with two pole-pole magnetic fields in a common magnetic core. The purpose of the invention is to expand the field of application of the winding by obtaining polarity P, / Pr - 16/4 with four-phase clamps for polarity p. The junction is made of uniformly displaced coils and connected in parallel branches, the beginnings and ends of which form single-phase clamps for polarity p, and the leads from their midpoints - additional clamps dp polarity p. The winding contains sixteen coils connected in series in accordance with the four branches with numbers 1,5,11,15 in the first; 2,6,12,16 in the second; 3.7, 9.13 in the third; 4,8,10,14 in the fourth branch of x. These additional clamps are from mid points of all four branches. The groove pitch of the grooves is equal to where the pole division for polarity is p, 3, or ill. (L

Description

g 5

or

D f / / 5

02

Od

"Sj

-vj

with

ABOUT)

SP

FIG. 2

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 16/4 with four-phase clamps for polarity p;,.

Fig, 1 shows a winding circuit; in fig. 2 is its EMF diagram for p, 16; in fig. 3 - its star and EMF diagram for p, 1 4.

The winding (fig. 1) is single-phase for p 16, single-layer in 32 grooves of 16 coils (with numbers from 1 to 16) with a step of n 1 - 3, where; i 32 / 8-4 is pole division for PI 4. It is connected in four branches with the numbers of coils 1, 5 11, 15 in the first, 2, 6, 12, 16 in the second, 3, 7 9, 13 in the third, 4, 8, 10, 14 in the fourth branch. Their beginnings and the end form single-phase clamps 01-02 for p 16, and the leads from their mid-points - additional four-phase clamps A, B, C, D for - 4. The upper row of arrows in FIG. 1 shows the directions of a single-phase current when powering the winding through clamps 01-02, and the bottom, pd, when powering the winding with four-phase current through clamps A, B, C, D (p, 4). : FIG. 2 and 3 EMF vectors are assigned numbers of coils. From FIG. 2 shows that the field with p, 16 does not induce EMF at terminals A, B, C, D; Fig, 3 shows that the floor with p 15 4 does not lead to EMF at the terminals

f 2 J 4 5 678 3 W 11 12 13 Ik 15

FIG. 7

01-02. Thus, the winding in FIG. 1 has opposite-pole clips that are electromagnetically independent, as a result of which there are no balancing currents in it. The winding coefficients of the winding are equal for p - 16-Kp5-1.0, for p 4 - K ,, 0,924. The winding can be used in single-machine frequency converters and phase numbers, in contactless combined dual-power machines and other electromagnetic devices with two polarized magnetic fields.

Claims (1)

Formula of gain A single-phase, single-phase, three-phase electrical winding with pj / p polarity, made of uniformly displaced coils and connected in parallel branches, the beginning and the ends of which form single-phase clamps for p-potential, and the outputs from their midpoints are additional terminals for polarity p, characterized in that, in order to expand the field of application by obtaining, j 16.4 with four-phase loans for polarity p, the winding contains sixteen coils, connected in series according to four branches with 1.5 11.15 in the pen oh, 2,6,12,16 in the second, 3,7,9,13 in the third, 4,8,10,14 in the fourth branch, and the step of the coils in the grooves is -1, where ZI is the pole division for polarity R. 4, S g 9 YAH5 p x Sree.H