SU1403263A1 - 8-6 pole three-phase pole-switchable winding - Google Patents

Abstract

The invention relates to electrical engineering. The purpose of the invention is to improve the use of active materials and to expand the scope. The winding on 8-6 poles contains 24 coil groups (CG), grouped into three three-phase stars, with conclusions from the points of parallel connection of the phases and zero points of the stars. The coils are distributed over the CG in accordance with a number of IK, IK, 2К, Ж 2К, 2К, 1К. 2K, IK, 1K, 2K, IK 2K, 2K, IK, 2K, IK, IK, 2K. K, 2K, 2K, IK, 2K. The phases (F) of one three-phase star include KG with the numbers 1, 3, 7. 10 for the first F, 9, 12, 15, 18 for the second F, 17, 20, 23, 2 for the third F. In the second three-phase star included KG with numbers 19, 22 for the first F, 3, 6 - for the second F, 11, 14 - for the third F. In the third three-phase star included KG with numbers 13, 16 for the first F, 21, 24 - for second F, 5, 8 - for the third F-. In each F, neighboring CGs are included in the opposite direction. Coils KG 3, 5, 6, 8, 11, 13, 14, 16, 19, 21, 22, 24 contain 1.06 times less number of turns than the other coils. where Z is the number of slots, a multiple of 36. I 3. p. f-crystals, 1 ill. ((L

Description

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carried AC2 6C carried K SC2

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05 GS

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 an internal cascade, etc.

The purpose of the invention is to improve the use of active materials by reducing the balancing currents and expanding the field of application by winding in a number of slots in a multiple of 36.

The drawing shows a winding scheme for 8 and 6 poles for laying in 36 pa; sakh ().

 The winding contains 24 coil groups; numbered from 1 to 24, and the distribution of coils in groups corresponds to 1p d: 1, 1,2, 1,2,2, 1,2, 1, 1,2, 1,2, 2, 1.2, 1, 1.2, 1, 2, 2, 1.2.

 The phases of one three-phase star attached to the 6C1 clamp include Kagushye groups with numbers 1, 4, 7, 10 — for the phase 8C1-bC; 9, 12, 15, 18 - for phase 8С2-6CI; 17, 20, 23.2 - for the phase.

The phases of the second three-phase star connected to the clamp 6C2 include coil groups with numbers 19, 22 — for the phase 8С1-6С2; 3, 6 - for phase 8С2-6С2; 11, 14 - for phase 8СЗ-6С2.

The phases of the third three-phase star connected to the 6S3 clamp include coil groups with numbers 13, 16 for phase 8CI-6S3, 21, 24 for phase C2-6S3; 5, 8 - for phase 8СЗ-6СЗ. In ||; each phase, neighboring coil groups are included in the opposite direction.

I Katuliki of coil groups with the order of 4, 3, 5, 6, 8, 11, 13, 14, 16, 19, 1, 22, 24 contain 1.06 times less Yitkov number than other coils. : Pole switching is implemented in a lio pattern.

: In the proposed winding, equalization currents are absent, since the emf of the parallel branches with coincide with

with

0

P

35

40

five

amplitude and phase, which allows to increase the rated current of the motor and its energy performance.

In addition, the implementation of the winding in the number of slots, a multiple of 36, expands its scope.

Claims (2)

1. Three-phase pole-switched winding for 8-6 poles, containing coils, combined into 24 coil groups with serial numbers 1-24 and grouped into three three-phase stars connected in parallel, with series connection of coil groups in each phase, provided with leads taken from the points of parallel connection of the phases and conclusions taken from the zero points of the stars, characterized in that, in order to improve the use of active materials and expand the scope of application, the coils are distributed over coil groups in accordance with Next: 1 К, 1 К, 2К, 1 К. 2К. 2K, IK, 2K, 1K, 1K, 2K, 1K, 2K, 2K, 1K, 2K, 1K, 1K, 2K, 1K. 2K, 2K, 1K, 2K, in the phases of one three-phase star are included coil groups with serial numbers. 1, 4, 7, 10 - for the first phase, 9, 12, 15, 18 - for the second phase, 17, 20, 23, 2 - for the third phase, coil groups with numbers 19, 22 - for the first phase, 3, 6 - for the second phase, 11, 14 - for the third phase, coil groups are included in the phases of the third three-phase star with numbers 13, 16 - for the first phase, 21, 24 - for the second phase, 5, 8 - for the third phase, and in each phase the neighboring coil groups are turned on counter. 2. Winding according to claim I, characterized in that the coils of the coil groups with sequence numbers 3, 5, 6, 8, 11, 13, 14, 16, 19, 21, 22, 24 contain 1.06 times less the number of turns than other coils where 7 where Z is the number of slots, a multiple of 36.