SU1631668A1 - Three-phase pole-switchable winding - Google Patents

Abstract

The invention relates to electrical engineering, in particular, to the windings of electric machines of alternating current. The circuit of the invention is to improve the use of active materials. The winding with the ratio of the numbers of pairs of poles pi / p2 1/6 contains coils combined into 42 coil groups (CG) and grouped into three three-phase stars, connected in parallel, and by sequential switching on of the coil groups in each phase (F) Alternation of the numbers of coils in the coil groups, respectively

Description

39 WtM 1 23 t 567 B 91011 7273ft 75 151718 1B202P2 232fi2S 6272S29 3031H ПЯЯ363 38

um, w2

2bC

It corresponds to the following range: 2K, 2K, 1K, 2K, 2K, 1K, 2K, 2K, 2K, 1K, 2K, 2K, 1K, 2K, 2K, 2K, 1K, 2K, 2K, 1K, 2K, 2K6, 2K, 1K, 2K, 2K, 1K, 2K, 2K, 2K, 1K, 2K, 2K, 1K, 2K, 2K, 2K, 1K, 2K, 2K, 1K, 2K. The f of one three-phase star includes (CG) with serial numbers: 16, 10, 13, 22 - for the first F; 8, 17, 20, 29 - for the second F; 15, 24, 27, 36 — for the third F. In the second three-phase star, CG includes CGs with serial numbers; 11, 23, 32 - for the first F; 18,30,39 - for the second Ф; 25, 37, 4 — for the third FV of the third three-phase star, included are coil groups with serial numbers: 12, 33, 42 — for the first F;

The invention relates to pole-switched windings of electric machines of alternating current and can be used in multi-speed asynchronous motors, as well as in special machines, such as frequency converters, machines with internal cascade, etc.

The purpose of the invention is to improve the use of active materials.

The drawing shows a winding arrangement for 4 and 24 poles for stacking in 72 slots.

The winding contains 42 coil groups with numbers from 1 to 42. At K 1, the alternation of the number of coils corresponds to the row: 2,2,1,2,2,2,2,2,2,2,2,2,2,2,2, 2,2,1,2,2,1,2,2,2,1,1, 2,2,1,2,2,2,2,2,2,1,2,2,2,2,1,2,2, 2,1,2.

The first phase of the first three-phase star, connected to the 4Ci terminal and the zero point, includes coil groups with sequence numbers 1, 10, 13, 22.

The second phase of the first three-phase star, connected to the clamp 4С2 and the zero point, includes coil groups with sequence numbers 8, 17, 20, 29.

In the third phase of the first three-phase star, connected to the clamp 4Сз and the zero point, the coil groups with numbers 15.24,27,36 are included.

The first phase of the second three-phase star, connected to the 4Ci terminal and the zero point, includes coil groups with numbers 11,23,32.

In the second phase of the second three-phase star, connected to the clamp 4С2 and the zero point, the coil groups with numbers 18, 30, 39 are included.

In the third phase of the second three-phase star, connected to the clamp 4Сз and the zero point, the coil groups with numbers 25, 37, 4 are included.

40.7, 19 - for the second F; 5, 14, 26 - for the third F. KG with numbers 10, 13,17, 20, 24, 27, 11, 32, 18, 39, 25, 4, 12, 33, 40, 19, 5. 26 included opposite other groups. Wrap ka also contains three branches. In the first branch, connected by the end to the zero point of the first three-phase star, are included according to CG 31, 34, 38, 41, 3.6. The second branch, connected by the beginning to the zero point of the third three-phase star, is included according to CG 2, 9, 16. The third branch, connected by the beginning to the zero point of the third three-phase star, is included according to CG 21,28,35. 1 Fig. And

In the first phase of the third three-phase star, connected to the 4Ci terminal and the zero point, the coil groups with numbers 12, 33, 42 are included.

In the second phase of the third three-phase

The stars connected to the terminal 4Са and the zero point include coil groups with numbers 40, 7, 19.

In the third phase of the third three-phase star, connected to the clamp 4 Csi zero point, included the coil groups with numbers 5, 14, 26.

Reel groups with numbers 10, 13, 17,20,24,27, 11,32, 18,39,25,4, 12,33,40,

19, 5, 26 included opposite groups.

The winding also contains three branches. In the first branch connected to the 24Ci terminal and the zero point of the first three-phase

stars, included according to coil groups with numbers 31, 34, 38, 41, 3, 6. The second branch connected to the terminal 24C2 and the zero point of the second three-phase star are included according to the coil

Groups with numbers 2, 9, 16. The third branch, connected to the clamp 24Сз and the zero point of the third three-phase star, is included according to the coil groups with numbers 21,28,35.

With 4Ci, 4C2 clips connected. 4Сз to the power supply and free terminals 24Ci, 24C2,24Сз winding creates a magnetic field with the number of poles equal to 4.

With 24Ci clips connected,

24С2, 24Сз to the power supply and free terminals 4Ci, 4C2, 4Сз the winding creates a magnetic field with the number of poles equal to 24. Equalizing currents in this winding are absent at both pole numbers, which

allows you to increase current loads and increase engine efficiency.

Claims (1)

Invention Formula A three-phase pole-switching winding with a ratio of the numbers of pairs of poles P1 / P2 1/6, containing coils coiled into groups and grouped into three three-phase stars connected in parallel, with series connection of coil groups in each phase, with terminations taken out of points in parallel phase connections, and conclusions taken from the zero points of the stars, characterized in that, in order to improve the use of active materials, the winding contains 42 coil groups with serial numbers from 1 to 42, alternating numbers to carcasses, in each of which corresponds to the row - 2K, 2K, 1K, 2K, 2K, 1K, 2K, 2K, 2K, 1K, 2K, 2K, 1K, 2K, 2K, 2K, 1K, 2K, 2K, 1K , 2К, 2К, 2К, 1К, 2К, 2К, 1К, 2К, 2К, 2К, 1К, 2К, 2К, 1К, 2К, 2К, 2К, 1К, 2К, 2К, 1К, 2КГ in the phases of one three-phase star included coil groups with order numbers; 1, 10, 13, 22.- for the first phase; 8,17,20, 29-for the second phase; 15, 24, 27, 36 - for the third phase, in the phases of the second three-phase star are included the coil groups with sequence numbers: 11, 23, 32 — for the first phase; 18, 30, 39 - for the second phase; 25, 37, 4 — for the third phase, the phases of the third three-phase star include coil groups with serial numbers; 12, 33, 42 - for the first phase; 40, 7, 19 - for the second phase; 5, 14, 26 - for the third phase, with the coil groups with the numbers 10, 13, 17, 20, 24, 27, 11, 32, 18. 39, 25, 4, 12, 33, 40, 19, 5, 26 other counter coil groups of the respective phases are included, in addition, the winding contains three branches, one ends of which are connected to zero points, and others form winding leads, and the first branch connected to the zero point of the first three-phase star is connected according to coil groups 31 , 34, 38, 41, 3, 6, in the second branch connected to the zero point of the second three-phase star, are included according to the coil group} with nom ramie 2, 9, 16, a third branch connected to the zero point of the third three-phase star included according Ka tushechnye groups 21, 28, 35, wherein To jy-, / - the number of slots, a multiple of 72.