SU1589353A1 - Three-phase pole-switchable winding - Google Patents

Abstract

The invention relates to electrical engineering. The purpose of the invention is to simplify the design. The winding at 10-8 poles contains 24 coil groups (G) and is made in the number of slots, a multiple of 72. G form phases (F), divided into two half-phases. The winding is equipped with leads from the beginning of Φ and the points of connection of the semi-phases. The alternation of the numbers of coils in Γ corresponds to a row of 3K, 1K, 5K, 3K, ... Each G-phase includes G having the following sequence numbers: the first half-phase of the first F - 22,24,3,5, the second half-phase of the first F - 10 , 12,15,17, the first half-phase of the second Ф - 6,8,11,13, the second half-phase of the second Ф - 18,20,23,1, the first half-phase of the third Ф - 14,16,19,21, the second half-phase of the third Ф - 2,4,7,9. In each semi-phase, the neighboring Gs are turned on. 1 il.

Description

The invention relates to pole-selectable windings of electrical machines and can be used in multi-speed asynchronous motors. The purpose of the invention is to simplify the design.

; The drawing shows a diagram of a two-layer winding for 10 and 8 poles in 72 slots (K 1).

The winding contains 24 coil groups with numbers from t to 24. The alternation of the numbers of coils in the groups corresponds to the row 3, 1,5,3,3,1,5,3,3, 1,5,3,3,1,5, 3,3,1,5,3,3,1,5,3.

In the first half-phase of the first phase, attached to the terminals 10 C, - 8 C

included coil groups 22 24

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In the second half-phase of the first phase, attached to the terminals 8 C, - 10 Cj, the coil groups 10 12 15, 17 are inserted.

The first half-phase of the second phase, attached to the terminals 10 C, - 8 C includes coil groups 6, 8, C

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The second half-phase of the second phase, connected to the terminals 8 Ca- 10 C, includes coil groups 18 20 23, 1.

In the first half-phase of the third phase, attached to the terminals 10 8 С. coil groups included 14 16 19, 21.

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The second half phase of the third phase, attached to the terminals 8 C - 10 C, includes coil groups 2, 4. 7, 9.

In each of the semi-phases, the neighboring coil groups are turned on.

When the 10 C, 10 C. ,, 10 Cj terminals are connected to the mains supply and the 8 C, 8 Cj, 8 C free terminals, the winding creates a magnetic field with the number of poles equal to 10.

When the terminals are connected to the mains: 8 C, 8 C, 8 Cj and 10 C closed terminals, 10 C, 10 C winding creates a magnetic field with the number of poles equal to 8.

The proposed winding is less time consuming to manufacture, as it contains fewer coil groups (24 compared to 36 in the known).

Claims (1)

Invention Formula 23.1, the first half-phase of the third phase 14, 16, 19, 21, the second half-phase of the third phase - 2, 4, 7, 9, and in each of the half-phases the neighboring coils Three-phase pole-switchable ob-25 groups are included in the opposite direction, where a coil of 10-8 poles contains Z K-72 identical coils, the positive number is positive, K Z / 72 Z is the number of slots multiple of 72. Into the coil groups, forming phases, divided into two semi-phases, equipped with outputs from the beginning of the phases and points of connection of the semi-phases, characterized in that, in order to simplify the design, the winding contains 24 coil groups with numbers from 1 to 24, the number of coils in which correspond to ЗК, 1К, 5К, ЗК, ЗК, 1К, 5К, ЗК, ЗК, 1К, 5К, ЗК, ЗК, 1К, 5К, ЗК, ЗК, 1К, 5К, ЗК, ЗК, 1К, 5К, ЗК, while each semi-phase includes coil groups having the following serial numbers in the above range: first half-phase of the first phase 22, 24, 3, 5, second half-phase of the first phase - 10, 12, 15, 17, first half-phase of the second phase - 6, 8, 11, 13, the second half-phase of the second phase is 18, 20, 23.1, the first semi-phase of the third phase - 14, 16, 19, 21, the second semi-phase of the third phase - 2, 4, 7, 9, and in each of the semi-phases the neighboring coil Groups included counter, where K groups included counter, where K is a positive number, K Z / 72 Z is the number of slots multiple of 72. tse