SU1019550A1 - Combined-type winding of electric machine stator - Google Patents

Abstract

COMBINED ELECTRIC MACHINE WINDING OF THE STATOR, made of 12 distributed catzoic groups connected in phases in two parallel branches, the beginnings of which form three-phase clamps for polarity p, and the ends are connected to two additional terminals for polarity p, in the first phase which are connected in series perpendicular groups counter-twelve in one branch, pole and counter-seventh in the other branch, characterized in that, in order to expand the application by obtaining p 5, p-2, in the second phase are connected groups of pentads and tenths in one branch, fourth and eleventh included in another branch, in the third phase - ninth and second in one branch, eighth and third counterclaims in another branch, and to these additional pins of the beginning of the third group, j the seventh and the end of the tenth in the odan conclusion, the end of the CO second, the beginning of the eleventh and twelfth - in another conclusion

Description

12 1 2 5 4 S 678 9 W tf

This invention relates to coils of combined electric machines and may be applicable. for example, in one-one frequency and number phase converters.

Known are the combined windings of alternating current machines, executed in the form of parallel branches of the same polarity, each of which consists of coils shifted in space and having conclusions of middle points, is south; Schnhs with the beginning of the phases of the other polarity p. The angle between the axes of the spools of the same branch is 2J ((p. + Pl) radians, and the number of turns in the spools is proportional to the sinus of the angle of their shift relative to the axis of the {1) branch.

The disadvantages of these windings are the complexity of the structure and fabrication, the large losses from the equalizing currents in the turns.

Also known is a three-phase-single-phase aligned winding containing 12 distributed, rolling groups connected in two parallel branches, the beginnings of which form three-phase clamps for polarity, the ends are connected to additional terminals for polarity of the X-ray, in one branch of which are connected in series first and end 25 but the eighth one, in the other branch the second and the seventh one are opposite, and the phase group numbers alternate at intervals of four groups, where p 1 and p: 6 2.

Closest to the technical nature of the DA to the proposed is a combined winding containing 12 distributed coil. groups,: connected in two parallel branches, the beginnings of which form three-phase clamps for polarity p, and the ends are connected to two 35

1 additional pin for p polarity,

in one branch of the phase of which the groups of the first and oppositely connected twelve in one branch are connected in series, in the other branch of the pole and oppositely connected the seventh, and the phase gauges of the groups of phases alternate at intervals of four groups, where p 5 is pj 6 31.

The disadvantages of the known windings are of limited use.

The purpose of the invention is the expansion of the winding

45 application of the winding by obtaining the numbers of pairs of poles 5 and XRL.

This goal is achieved by the fact that in the second phase groups are connected in series

the fifth and tenth in one branch, the fourth and eleventh included in the other branch, in the third phase - the ninth and second in one branch, the eighth and

Lit on the other branch, with the third, seventh and end of the tenth in one pin, the end of the second and the beginning of the eleventh, twelfth in the Other pin, and the coil pitch is slightly larger than the pole division for polarity pn. FIG. 1 schematically shows the proposed winding; in fig. 2 and 3 are the star and the EMF diagram of the winding for pole position 5. The winding (Fig. 1) is single-layer in 24 grooves with a coil pitch of 7 and contains 12 distributed coils with numbers from 1 to 12. In the first phase, the coils of the first and counter-twelve in one branch, pole and counter-seventh in another branch, in the second phase - the fifth and tenth in one branch, counter-included fourth and eleven in the other branch, in the third phase - Dev and the second in one branch, counter-included eighth and third in another branch. The beginnings of the third, seventh, and end of the tenth groups are connected to one additional conclusion, and the end of the second, beginning eleventh and twelfth, to another additional conclusion. The beginning of the phases for the polarity of p. 5 are designated as C1, C2, Sz, and additional outputs for polarity

like 01 and 02.

P ,, 5

The upper-row of arrows (Fig. I) shows the directions of the currents when powering the winding through the terminals C1, C2, Sz and three-phase current, from which it is clear that p 5. The lower row of arrows shows the directions of the currents when feeding the winding through the terminals 01 and 02 are constant current, where it can be seen that 2.

FIG. 2 and 3, the numbers of coils are assigned by the EMF vector and from the EMF diagram for d 5 (Fig. 3) it can be seen that this field is on the 01; and 02 emf does not induce.

Winding winding ratio for pole ratio p 5 - Kd5z -.

Winding can be applied on the stator; combined electric machines as 2p 10 poles of three phase and as 2p a4 poles of direct current.

Fig

02

Claims (1)

COMBINED ELECTRIC MACHINE STATOR WINDING, made up of 12 distributed coil groups connected in phases into two parallel branches, the beginning of which form three-phase clamps for the polarity of p ^, and the ends are connected to two additional terminals for the polarity of p ^, in the first phase of which are connected in series groups the first and opposite twelfth in one branch, the sixth and opposite seventh in another branch, characterized in that, in order to expand the application by obtaining p ^ ₌ 5, p- = 2, in the second phase are connected pp fifth and tenth in one branch, opposite fourth and eleventh in the other branch, in the third phase, ninth and second in one branch, opposite the eighth and third in the other branch, and to these additional conclusions connecting the beginning of the third, seventh and end groups the tenth in one conclusion, the end of the second, the beginning of the eleventh and twelfth - in another conclusion. SU "1019550 Fig. 1