SU1457092A1 - Three-phase switchable-pole winding - Google Patents

Abstract

The invention relates to electrical engineering. The purpose of the invention is to simplify the design and increase the use of active materials. The winding is single-layer and consists of 18 coil groups formed by concentric coils, which makes it possible to manufacture and install it on modern equipment. yx sweet The winding is made with the ratio of the numbers of poles 6: 4, laid in 54 slots. Given the distribution of the coils in coil groups, 1 pc,

Description

The invention relates to pole-switched windings of nepeMeHHorov TOKa electric machines and can be used in the electrical industry in the manufacture and installation of stator windings of two-speed engines.

The purpose of the invention is to simplify the design and increase the use of active materials.

The drawing shows a circuit-winding winding.

The winding is made in 54 stator slots with numbers from 1 to 54 and the ratio of the numbers of poles is 6: 4, the coils of which are divided into 18 coil groups, with numbers from 1G to 18G and connected to three three-phase stars. Moreover, to equalize the potentials of parallel branches in the scheme, the presence of equalizers of the second kind, which form a node when connecting

The ends of the coil groups with numbers 4G, SOUTH, 1bG (shown as a line connecting the points O, O).

With the connected terminals 6С1, 6С2, without to the symmetric power supply network and free coils 4С1, 4С2, 4СЗ, a rotating magnetic field occurs with the number of poles equal to six. When the 4C1, 4C2, 4C3 terminals are connected to the mains, a rotating magnetic field occurs with the number of poles equal to four. Clips 6S1, 6S2, without at the same time free.

The magnitude of the winding coefficients of the proposed winding is 0.960, K, 0.829, Kw, p 0.894 against Kv (/, 0.960, K, 0.717, ep 0.839 for the well-known. In addition, equalizing currents are practically absent, since 4E 0.042 against LE Oj0198 for the well-known windings.

O1

m

f

In a constructive respect, the winding is single-double-layered, consists of 18 K-groups and therefore can be laid manually in the stator slots without step lifting or mechanized using modern stator-wrap equipment.

Claims (1)

This winding is superior to that known for the use of active materials, has a minimum number of output ends equal to six, and can be recommended for use in the electrical engineering industry in the manufacture and installation of stator windings of two-speed asynchronous AC motors. Invention Formula A three-phase pole-switched winding with a pole ratio of 6: 4, filled in 54 stator slots with numbers from 1 to 54, containing coil groups, the coils of which are connected in series, combined in three three-phase stars, connected in parallel with the series connection of coil groups each phase, provided with leads taken from points of parallel connection of phases, and leads taken from zero points of stars, and designed for laying without step lifting, characterized in that, in order to simplify the construction and increase no use of active materials, the winding is made of eighteen coil groups with numbers from 1G to 18G, of which six groups with serial numbers 1G, 6G, 7G, 12G, 13G, 18G and the beginning of the coils in..pazza with numbers 5, 17, 23, 35, 41, 53, respectively, are formed by coils with the number of turns h and step y - 11, six groups with pore numbers 2Г, 5Г, 8Г, 11Гд, 14Г, 17Г and the beginnings of external coils In slots with numbers 8, 14 , 26, 32, 44, 50 respectively are formed by concentric coils consisting of two coils with the number of turns w performed with steps y, 11, y2 9, three groups with serial numbers ZG, 9G, 15G and the beginnings of external coils in grooves numbered 11, 29, 47, respectively, are concentric coils, two coils with the number of turns w, performed with steps Y, 11, U 9, and one coil with the number of turns w, executed with step U – 5 7, and three groups with sequence numbers 4Г, ЮГ, 16Г and the beginning of the coil in the slots with numbers 13, 21, 49, respectively, are formed by coils with the number of turns. Wg and in increments of 7, in which the phases of one three-phase star attached to the 6C1 clamp include the beginning of a coil group with the serial number 16Г and a counter 15G for the 4С1-6С1 phase, a coil group with the serial number of the OH and a counter 9Г for the phase 4С2-6С1, the coil group with the serial number 4Г and the opposite CG for the 4СЗ-6С1 phase, in the phases of another three-phase star connected to the clamp 6С2, the coil group with the serial number 2Г and the counter 6Г for the 4С1-6С2 phase a coil group with the serial number 14G and a counter 18G for the 4C2-6C2 phase, cat the ear group with the serial number of VG and the opposite 12G for phase 4СЗ-6С2, in the phase of the third three-phase star connected to the clamp without - the coil group with the sequence number 11Г and the opposite 7G for phase 4С1-bСЗ, the coil group with order number 5Г and counter 1G for phase 4С2-6СЗ, coil group with sequence number 17Г and counter 13G for phase 4СЗ-6СЗ, with the ends of coil groups with order numbers 4Г, ЮГ, 16Г connected by equalizer of the second kind to form a knot, and the relative numbers of turns of the coils are relative to w, w: w; wj 1,0: 0,88: 0,12. pg ler jr J fr ЗГ if sr 6Г l: SL, J. nr 1y