SU1437954A1

SU1437954A1 - Three-phase double-layer pole-switchable winding of induction motor stator

Info

Publication number: SU1437954A1
Application number: SU864074082A
Authority: SU
Inventors: Артем Эммануилович Кравчик; Михаил Маркович Шлаф; Лев Вениаминович Горелик
Priority date: 1986-06-05
Filing date: 1986-06-05
Publication date: 1988-11-15

Abstract

Изобретение относитс к конструкци м обмотки статора асинхронного двигател с переключением числа полюсов с на , предназначенной дл механизированной укладки. Целью изобретени вл етс повьшение КДЦ и надежности. В каждой фазе одна катушечна группа расположена в нижнем слое зубцовой зоны, друга катушечна группа расположена в верхнем слое зубцовой зоны, треть катушечна группа расположена в нижнем слое зубцовой зоны за исключением q/2 катушек (или сторон катушек), четверта катушечна группа расположена в верхнем слое зубцовой зоны за исключе- нием q/2 катушек (или сторон катушек) ,§ где q - число пазов на полюс и фазу при . Дано распределение катушек // по пазам. 2 ил.The invention relates to the stator winding structures of an asynchronous motor with a switching number of poles from to, intended for mechanized installation. The aim of the invention is to increase CDC and reliability. In each phase, one coil group is located in the lower layer of the tooth zone, another coil group is located in the upper layer of the tooth zone, a third coil group is located in the lower layer of the tooth zone with the exception of q / 2 coils (or sides of the coils), the fourth coil group is located in the upper the dentate zone, with the exception of q / 2 coils (or coil sides), § where q is the number of grooves per pole and phase at. Given the distribution of coils // in grooves. 2 Il.

Description

1one

СА9SA9

чh

СП 4а SP 4a

Изобретение относитс к конструкции двухслойной обмотки статора асинхронного двигател с переключением числа полюсов с на , предназначенной дл меха1шэированной укладки .The invention relates to the construction of a two-layer stator winding of an asynchronous motor with switching the number of poles from to, intended for mechanical styling.

Цель изобретени - повьшение КПД и надежности путем устранени несимметрии реактивных сопротивлений обмоток фаз.The purpose of the invention is to increase efficiency and reliability by eliminating the unbalance of the reactance of the windings of the phases.

На фиг. 1 представлена развернута схема предлагаемой обмотки, расположение , катушек обмотки в пазах, внут- рифазные и межфазные соединени схемы , а также расположение вьшодных концовi на фиг. 2 - расположение катушек по сло м зубцовой зоны при последовательности укладки катушечны групп, соответствующей нумерации переходов . Индуктивное сопротивление рассе ни проводников, расположенных в ;Нижнем слое зубцовой зоны, выше сопротивлени рассе ни проводников верхнего сло .FIG. Figure 1 shows the layout of the proposed winding, the arrangement, the winding coils in the grooves, the interphase and interphase connections of the circuit, as well as the location of the upper ends in FIG. 2 shows the arrangement of the coils along the layers of the dentate zone with the sequence of stacking of the coil groups corresponding to the numbering of the transitions. The inductive resistance of the scattering of conductors located in the; Lower layer of the dentate zone is higher than the resistance of the scattering of the conductors of the upper layer.

В силу того, что катушечные груп левые стороны внешних катушек которых наход тс в пазах 1 1By virtue of the fact that the coil groups of the left sides of the outer coils of which are in the slots 1 1

.f..f.

1 +1 +

1 one

fi Оfi o

4)44) 4

2Z,2Z,

(1 + ) -н(1 +) -n

-г, расположены в нижнем слое пазов, катушечные группы, левые стороны ешних катушек которых наход тс в 35-g, located in the lower layer of the grooves, coil groups, the left sides of which are 35 coils

ZZ

Z Z зах 1 + 2 -г, ( + -о-)Z Z Zah 1 + 2 -g, (+ -)

+ 2+ 2

4four

|)|)

2 42 4

1 +1 +

з|; (1h | (one

ZNZN

(1 +(1 +

з|.h |.

р,R,

+ 3+ 3

ZZ

4four

- в верхнем слое пазов , в нижнем и верхнем сло х зубцовой зоны сторойы катушек каждой фазы расположены в равном количестве. Это обуславливает равенство индуктивных сопротивлений рассе 1ш фаз предлагаемой обмотки в отличие от сопротивлений фаз известной обмотки, в кото- рьй-все стороны катушек одной фазы расположены в нижнем слое пазов, а все стороны катушек другой фазы - в верхнем слое. Разлшше сопротивлений по фазам искажает магнитное поле двигател , вызьтает дополнительные потери электроэнергии, снижающие КПД двигател , и приводит к повьппешш нагрева обмотки, снижающего его надежность .- in the upper layer of the grooves, in the lower and upper layers of the tooth zone, the sides of the coils of each phase are arranged in equal amounts. This causes the equality of the inductive resistances of the 1-phase phases of the proposed winding, in contrast to the resistances of the phases of the known winding, in which all sides of the coils of one phase are located in the lower layer of the slots, and all sides of the coils of the other phase are in the upper layer. The phase resistance distorts the magnetic field of the engine, causes additional losses of electric energy, reducing the efficiency of the engine, and leads to heating of the winding, reducing its reliability.

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5five

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5five

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Устранение несимметрии реактивных сопротивлений по фазам, позвол ет повысить КПД двигател , снизить температуру обмотки статора, повысить надежность двигател .Elimination of unbalance of reactive resistances in phases allows to increase engine efficiency, reduce the temperature of the stator winding, and increase the reliability of the engine.

Изобретение может быть использовано дл механизации обмоточно-изо- лированных работ на заводах-изгото-- вител х асинхронных двигателей.The invention can be used for mechanization of winding-isolated works at manufacturing plants of asynchronous motors.

Claims

Invention Formula

The three-phase two-layer pole-selectable stator winding of an induction motor with a switching number of poles from to with a step equal to -gr 1 each phase of which is divided

Lena into two semi-phases, each of which consists of two successively connected coil groups, consisting of

Z is each of -rj concentric coils,

moreover, D of the first phase in the first semi-phase included Katruchny groups, the left sides of the outer coils of which

2 are located in slots 1 and 1, and in

The second half-phase includes coil groups, the left sides of the outer coils of which are located in the slots 1 +

Z z

+ t- and 1 + 3 -TJ in the second phase in the first half-phase included coil groups, the left sides of the external coils

,, Z. which are located in the slots (1 +)

7

and (1 +) 2 -t, and in the second half-phase

included are the coil groups, the left sides of the outer coils of which are z Z

laid in the grooves (1 +; ;-) + -gi O +

J 4

Z Z + -: g) + 3 -g, in the third phase in the first

the semi-phase includes the coil groups, the left sides of the outer coils which are located in the slots 1 + - and

22 2

(1 + Y) 3 to the second prolufazu

Coil groups are included, the left sides of the outer coils of which are located in the slots (1) + -g and (1 +

34

222

+: d) 3 v and in each phase end

the first semi-phase is connected with the beginning

second half-phases and conclusions from the beginnings and ends of the half-phases, about which, in order to improve efficiency and reliability by reducing the asymmetry of the reactance of the phases of the winding, the coil groups, the left sides of the outer coils of which are in grooves 1 Z. , Z,. . Z,. Z, 3

3

one

4 1 4

22 Z

(1 + -g-) + -g are located in the bottom 3 4

a layer of grooves, and the coil groups, the left sides of the outer coils of which

located in the slots 1 +

2 |; (1 |)

2 |; (, .22 .2 |;

1 +

3 Z.

four

o. |,

h | (I

. |)

3 A

the top layer of the slots, where Z is the number of slots in the stator, with Z being a multiple of 12.

IG 0 0

cr ffa 8sg

& 0 / ecj

0 yi Ci 8CS

FIG.

PNj