SU1350769A1 - Pole-switchable three-phase winding - Google Patents

Abstract

The invention relates to multi-speed windings of AC electric machines with switching pole numbers. The aim of the invention is to expand the scope by obtaining additionally the numbers of pairs of poles p. P2-4 intended for the number of slots 12 times. The winding is made of 12 identical coil groups (CG) evenly distributed over the machine bore, which is odd CGs are connected to each other in series in a triangle with order numbers of CG in a triangle 1-7-9-3-5-11, and conclusions are drawn from the vertices of the triangle. The even CGs are connected in three branches with two opposite CGs in each branch, the order numbers in the branch x 10-4, 6-12, 2-8, and with conclusions from the beginnings of these branches; .and the ends of the branches are connected to the midpoints of the sides of a triangle formed by odd CG. For the expansion of the application area of the winding from the midpoints of the branches with even KG and from the points of interconnection between even and-odd KG with serial numbers of groups, additional points are made at the points 1-7-10, 9-3-6, 5-11-2. vygeody. The resulting four-speed winding has 12 terminals per rotational speed switch. The winding can be used in three-phase multi-speed AC motors. 2 Il. i (L od sp o5. with

Description

one

1350769

20

This invention relates to myogosto-pole-switched windings of electric machines with alternating current.

The purpose of the invention is the expansion of

areas of application by obtaining additional numbers of pairs of poleop p 2 and pj .4.

Fig, 1 presents the diagrams. connections of elements of three-phase four-JQ speed winding with the ratio of the numbers of pairs of poles 1: 2: A: 5; FIG. 2 shows a deployed three-phase four-speed winding circuit with pole numbers 2, 4, 8, 10 for the number of slots Z 36.

Three-phase four-speed ob-,. Winding, with a shear-pair ratio; ifo.iTincoB 1: 2: 4: 5 contains 12 identical coil groups from 1 to 12, evenly distributed over the machine bore (Fig 2). The regular coil groups are connected by a triangle with the numbers of the consecutively connected coil in the triangle 1-7-9-3-5-11, with the coil -groups 7, 3 and 11 being turned on by the wind with respect to the rest of the Trimming groups in the triangle; .a from ver1sh: triangle, in which 1x the coils of groups, 3-5, are connected, A, B ,, C, respectively, are made. Even K groups are connected in three branches, in each of which two coil groups with numbers 10–4 dl, the first branch, 6–12 for the second branch and 2–8 for the third one, each from the beginning and the middle, are not in series - pi made deduction 1, indicated, respectively, for the first branch A / A,

thirty

35

eight

fo. n A ,, for the second branch 0, / 15 ,,. and C

and for the third branch B .r / -. and bg. The winding branches with even coil groups are connected to the middle of the sides of the triangle formed by non-6 coil groups, the coil group 10 of the first branch being connected to the coil groups of the triangle with numbers 1-7, the coil group 6 of the second branch is connected to coil rijynnaMi 9 -3 and the coil group 2 of the third branch is connected to the coil groups 5-11, a. at the junction points, the even and odd coil groups are interconnected with corjjrcno. In addition to the TGO, from the points of connection of odd and odd coil terminals A,

WITH,

 groups made conclusions L ,, And, (Fig, 1).

The developed four-speed winding has 12 terminals per rotation frequency switch and is intended for FiasoB numbers that are multiples of 12. For the engine to operate with the number of pole pairs p 5, the voltage is applied

and C ,. /AT,

to conclusions / A,

AT ,. /WITH.

M -10

and the rest of the winding vyvydy remain open

With p 1, three-phase power is supplied to the interconnected 15 terminals A .; and, b ,, and a, / a, c

and СJJ, / c. In this case, the phases of the winding are connected T-shaped with three parallel branches and with the intermixing between the branches 120.

At p - 4, the winding connects to a double star by interconnecting the Ne and the A and A / A, B

and

C, o /% conclusions And

25

2 j

and B In

fO 4 1.

, (, / С And shorting (1, and the power supplies 2 V "

c to conclusions Ag,, (.. g.

When the engine is operating with the number of pairs of p. 2 pus, winding terminals A g, Bg, Cg are connected - between themselves, forming a star with four parallel branches, and power is supplied to the pairwise connected terminals A and A. ,, A / A. AT

f (V 4 and conclusions

and C, / B, C and B, d / C,

A., B, Cj remain short-circuited.

Winding can be used in multi-speed alternating-current drives with a ratio of the numbers of pairs of JHOCOB 1: 2: 4: 5 or with the numbers of pairs of poles included in a given ratio.

40

F o

Mule Invention

Three-phase pole-switching. The winding of alternating-current machines, consisting of 12 identical coil groups, uniformly distributed over

. the bore of the machine, included in nine branches, the end of the first branch is connected with the beginning of the second branch and the end of the seventh gQ my branch, the end of the second branch is connected with. the beginning of the third branch, the end of the third branch with the connection d of the beginning of the fourth branch and the end of the eighth branch, the end of the fourth branch is connected

t-c with the beginning of the fifth branch, the end of the fifth branch is connected with the beginning of the sixth branch and the end of the ninth branch, the end of the sixth branch is connected with the beginning of the first branch, with conclusions from the beginning of the first, three

2

conclusions A,

WITH,

 groups made conclusions L ,, And, (Fig, 1).

The developed four-speed winding has 12 terminals per rotation frequency switch and is intended for FiasoB numbers that are multiples of 12. For the engine to operate with the number of pole pairs p 5, the voltage is applied

and C ,. /AT,

to conclusions / A,

AT ,. /WITH.

M -10

and the rest of the winding vyvydy remain open

With p 1, three-phase power is supplied to the interconnected terminals A .; and, b ,, and a, / a, c

and СJJ, / c. In this case, the phases of the winding are connected T-shaped with three parallel branches and with the intermixing between the branches 120.

At p - 4, the winding connects to a double star by connecting inter0

five

Nyvodon Ad and A / A, B

and

C, o /% conclusions And

five

2 j

and B In

fO 4 1.

, (, / С And shorting (1, and the power supplies 2 V "

c to conclusions Ag,, (.. g.

When the engine is operating with the number of pairs of p. 2 pus, winding terminals A g, Bg, Cg are connected - between themselves, forming a star with four parallel branches, and power is supplied to the pairwise connected terminals A and A. ,, A / A. AT

f (V 4 and conclusions

and C, / B, C and B, d / C,

A., B, Cj remain short-circuited.

Winding can be used in multi-speed alternating-current drives with a ratio of the numbers of pairs of JHOCOB 1: 2: 4: 5 or with the numbers of pairs of poles included in a given ratio.

40

F o

Mule Invention

313

The fifth, seventh, eighth and ninth branches, the first branch includes coil group 1, the second branch includes coil group 7, the third branch includes coil-, group 9, the fourth branch includes coil group 3, the fifth branch includes a coil group 5, the sixth branch includes a coil group 11, the seventh branch includes coil groups A and 10, the eighth

coil groups 12 and 6 are included, coil groups 8 and 2 are included in the ninth branch, characterized in that, in order to expand the field of application by obtaining additional numbers of field pairs. At the same time, additional conclusions were drawn from the ends of the first, third, fifth branches and from the middle of the seventh, eighth, and ninth branches.

AT,

B / ojCi / Figure 1

Editor A. Kozoria

.The compiler A. Ketsaris

Tehred M. Khodanich Proofreader M. Sharoshi

Order 5294/54 Circulation 659 Subscription

VNIIGO State Committee of the USSR

on the case, m inventions and discoveries 113035, Moscow.ZH-35, Raushsk nab., d, 4/5

Production and printing company, Uzhgorod, Projecto st., - 4

Claims (1)

Claim The three-phase pole-switched winding of alternating current machines, consisting of 12 identical coil groups evenly distributed over the bore of the machine, included in nine branches, the end of the first branch is connected to the beginning of the second branch and the end of the seventh 5Q branch, the end of the second branch is connected to. the beginning of the third branch, the end of the third branch is connected At the beginning of the fourth branch and the end of the eighth branch, the end of the fourth branch is connected 55 to the beginning of the fifth branch, the end of the fifth branch is connected to the beginning of the sixth branch and the end of the ninth branch, the end of the sixth branch is connected to the beginning of the first branch, with conclusions from the beginnings of the first, 'third, fifth, seventh, eighth and ninth branches, with coil group 1 included in the first branch, coil group 7 included in the second branch, coil group 9 included in the third branch, in the fourth branch included reel g uppa 3, reel group 5 is included in the fifth branch, reel group 11 is included in the sixth branch, reel groups 4 and 10 are included in the Seventh branch, reel groups 12 and 6 are included in the eighth branch, reel groups 8 and 2 are included in the ninth branch, characterized by the fact that, in order to expand the scope by obtaining additional numbers of pairs of fields. sov p _y = 2, p ₂ = 4, at the winding made additional conclusions from the ends of the first, third, fifth branches and from the middle of the seventh, eighth and ninth branches. Figure 1