SU1614075A1 - Three-phase 10-8 pole-switchable winding - Google Patents

Abstract

The invention relates to electrical engineering. The purpose of the invention is to simplify the design. The winding for 10 - 8 poles with the number of coils Z = 90 contains 24 coil groups / KG /. KG form a phase / F /, divided into two semi-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 the CG corresponds to the following row - 3K, 7K, 2K, 3K ... Each CG includes CG having the following sequence numbers: the first half-phase of the first F - 21, 24, 2, 7, the second half-phase of the first F - 9, 12, 14, 19, the first half-phase of the second F - 5, 8, 10, 15, the second half-phase of the second F - 17, 20, 22, 3, the first half-phase of the third F - 13, 16, 18, 23, the second half-phase of the third F - 1, 4, 6, 11. KG 24, 12, 8, 20, 16, 4 are included opposite to other KG of the corresponding semi-phases. 1 il.

Description

The invention relates to electrical engineering, namely to pole-switched windings of electric machines of alternating current, and can be used in multi-speed asynchronous motors.

The purpose of the invention is to simplify the winding design by reducing the number of coil groups.

The drawing shows the proposed winding for 10 and 8 poles, laid in 90 slots ().

Winding contains 24 coil fupps,

The numbers of coils in each of the coil groups with numbers from 1 to 24, filled with the first, correspond to the row 3, 7, 2, 3, 3.7, 2. 3, 3, 7, 2, 3, 3, 7, 2 , 3, 3, 7, 2, 3, 3, 7, 2. 3.

The first half-phase of the first phase, attached to the 10Ci – 8Ci terminals, includes coil groups with numbers 21, 24, 2, 7.

In the second half-phase of the first phase, attached to the 8Ci-10C2 terminals, the coil groups 9, 12, 14, 19 are included.

The first half-phase of the second phase, attached to the terminals 10С2 - 8С2, includes coil groups 5, 8, 10, 15.

The second half-phase of the second phase, attached to the terminals 8С2 - ЮСз, includes coil groups 17, 20, 22, 3,

In the first half-phase of the third phase, attached to the clamps Yusz - 8Сз, included coil groups 13, 16, 18, 23.

In the second half-phase of the third phase, connected to the 8Cz-lOCi clamps, the coil groups 1, 4, 6, 11 are included.

Coil groups numbered 24, 12, 8, 20, 16, 4 are included in opposition to other coil groups of the corresponding semi-phases.

Winding works as follows.

D.

B. Oh h

cl

The pole switching is carried out according to the D / YY scheme.

When the lOCi, 10C2 and USC terminals are connected to the supply network and the 8Ci, 8C2 and 8C3 terminals are free, the winding creates a magnetic field with the number of poles equal to 10.

When the 8Ci, 8C2 and 8Cz terminals are connected to the mains supply and the 10Ci, 10C2 and USZ terminals are closed, the winding creates a magnetic field with the number of poles equal to 8.

The proposed winding (in comparison with the known ones) has a simpler design and is less labor-consuming to manufacture, since it contains a smaller number of coil-type groups of different types (three instead of four).

Claims (1)

Invention Formula Three-phase, pole-switched winding 10-8 poles with the number of coils Z 90, combined into twenty-four coil groups with numbers from 1 to 24, the forming phases, separated by semi-phases, supplied with leads from the beginning of the phases and points of connection of the semi-phase, coil groups are included in each semi-phase, having the following sequence numbers: first half-phase of the first phase -21, 24, 2, 7, second half-phase of the first phase -9,12,14,19, first half-phase of the second phase - 5, 8, 10, 15, second half-phase of the second phase - 17, 20, 22, 3, first half-phase of the third phase - 13, 16, 18, 23, the second half-phase of the third phase - 1, 4, 6, 11, with the coil groups with numbers 24,12, 8, 20, 16, 4 included opposite to other coil groups corresponding phases, which is different in that, in order to simplify the design by reducing the number of coils, in each of the coil groups, they are made in accordance with a number of LCs, 7K, 2K, LCs, LC, 7K, 2К, ЗК, ЗК, 7К, 2К, ЗК, ЗК, 7К, 2К, ЗК, ЗК, 7К, 2К, ЗК, ЗК, 7К, 2К, ЗК, where К Z / 90 is an integer. // 12 6