SU1254566A1 - Three-phase - five-phase combined winding for electric machine - Google Patents

Abstract

The invention relates to electrical engineering and can be used in non-contact dual-feed machines. The purpose of the invention is to expand the field of application by obtaining the ratio of the numbers of pairs of poles p, / Pj 10/3. The winding is connected in five parallel three-phase stars, the beginnings of which form clamps C, C 2, C for polarity P, 10, and the leads from their zero points form clamps A, B, C, D for polarity P2 3. In each star of phases included in series — according to two shifted one relative to the other on the radian coil and have the following numbers in phases: for phase C, - 1 and 10 in the first, 13 and 22 in the second, 25 and 4 in the third, 7 and 16 in the fourth, 19 and 28 in fifth stars; for phase C, 21 and 30 in the first, 3 and 12 in the second, 15 and 24 in the third, 27 k in the fourth, 9 and 18 in the fifth stars; for Sz - 11 and 20 in the first, 23 and 2 in the second, 5 and 14 in the third, 17 and 26 in the fourth, 29 and 8 in the fifth stars, with the groove step of the coils being three times the pole division for polarity p. 3 il. i -fe2

Description

The invention relates to coils of alternating-current electrical machines of the combined type and can be used, for example, in noncontact dual-feed machines, in single-machine frequency converters and digital frequency converters. la phases and others.

The purpose of the invention is to expand the field of application by obtaining p, / p, 10/3.

FIG. 1 shows a diagram of the proposed winding; in fig. 2 and 3 are diagrams of EMF for the polarity p, 10 (Fig. 2) and for Pj 3 (Fig. 3).

The winding (Fig. 1) is made of a single-layer sixty-six slots of thirty coils (with numbers from 1 to 30) with a step along the slots Y ;, 3:, 3 x X 60/20 9, where c, is the pole division for R | 10, It is connected in five parallel three-phase stars, the beginnings of which form three-phase clamps C ,, C, Cj for polarity p 10, and the outliers from their zero points form additional five-phase aimazhi A, B, C, D for polarity p2 3. In each star, the phases are connected in series, according to two NC / 5 biased relative to each other and 5 radians in the phases: for phase C - 1 and 10 in the first, 13 and 22 In the second, 25 and A in the third, 7 and 16 in the fourth , 19 and 28 in the fifth star for phase C - 21 and 30 in the first, 3 and 12 in the second, 15 and 24 in the third, 27 and 6 in the fourth, 9 and 18 in the fifth star , For phase C - 11 and 20 at first 23 and second 2, 5 and 14 in the third, 17 and fourth 26, 29 and 8 in the fifth stars.

The upper row of arrows in FIG. 1 shows the direction of the currents when powering the winding through clamps C, C2, C with a three-phase current (p, 10); Bottom - Institute of Arrows - the direction of the currents when the winding is supplied through the terminals A, B, C, D, E with a five-phase current (Pj 3).

FIG. 2 and 3 EMF vectors are assigned numbers of coils. From the diagram in FIG. 2. constructed for polarity p, 10, it is clear that the field with this polarity does not induce an emf at terminals A, B, C, D, E; from the diagram in FIG. 3, constructed for the p 3 polarity, it can be seen that the field with this pole does not induce an emf at the terminals C ,, Cjp, Cg. Thus, the winding in FIG. 1 is equivalent to two electromagnetically independent AC windings: five-phase for p 3 and three-phase for p, 10. For each pole, the winding is symmetrical and has winding coefficients: K g, d for p, 10; To 0.9393 for p 3. Compared with the known winding, it has extended application.

The proposed winding can be used, for example, on the stator of contactless combined dual-power machines, in single-machine frequency and number of phase converters, and others. Its use allows us to simplify the design and manufacture of the machine, reduce the consumption of copper and insulation, increase energy performance and operational reliability.

Formula of the invention

Three-phase typhasic combined electric winding with the numbers of pairs of poles Pj / Pj, made of thirty spatially displaced

coil groups and connected in five parallel three-phase stars,

 the beginnings of which form three-phase terminals C, C, Cz for the polarity of p 1, the leads from their zero points form additional five-phase clamps for the polarity of Pj, so that, in order to expand the field of application by obtaining 10 / 3, in each branch of each phase are connected in series according to two shifted one relative to the other on the ZTG / 5 radians katno (furnace groups, for the phase. С, have numbers 1 and 10 in the first, 13 and 22 in the second, 25 and 4 in third, 7 and 16 in the fourth, 19 and 28 in the fifth stars, for

1phases C2 - 21 and 30 on the Friday, 3 and 12 in the second, 15 and 24 in the third, 27 and 6 in the fourth, 9 and 18 in the fifth stars, for the Cz phase - 11 and 20 in the first, 23 and 2 in the second , 5 and 14 in the third, 17 and 26 in the fourth, 29 and 8 in the fifth stars, with the groove spacing of the coils being three times the pole division for polarity p.

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Editor M.Petrova

Compiled by A. Ketsaris Tehred M. Khodanych

Order 4728/57 Circulation 631 Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Production and printing office, Uzhgorod, Projecto st., 4

Proofreader M.Maksimishinets

Claims (1)

Claim A three-phase-five-phase combined electrodynamic winding with the numbers of pairs of poles P | / p ₂ made of thirty spatially displaced coil groups and connected into five parallel three-phase stars, the beginnings of which form three-phase clamps C ₍ , C ₇ , C _e for the pole r _r , ι the conclusions from their zero points form additional five-phase clamps for the pole of p ₂ , and I differ in that, in order to expand the scope by obtaining p </ p ₂ = 10/3, in each branch of each phase are connected in series according to two offset one relative to another on ZTG / 5 radian coil groups, for the phase. There are numbers 1 and 10 in the first, 13 and 22 in the second, 25 and 4 in the third, 7 and 16 in the fourth, 19 and 28 in the fifth star, for 'phase C ₂ - 21 and 30 in the first, 3 and 12 in the second, 15 and 24 in the third, 27 and 6 in the fourth, 9 and 18 in the fifth star, for phases C ₃ - 11 and 20 in the first, 23 and 2 in the second, 5 and 14 in the third, 17 and 26 in the fourth, 29 and 8 in the fifth star, and the pitch of the coils in the grooves is equal to three times the pole division for the pole pj. 29 30 4 2 3 4 S 6 7 t 3 40 11