WO2022164343A1 - Method for winding the phase windings of a stator of a multipole electric machine - Google Patents
Method for winding the phase windings of a stator of a multipole electric machine Download PDFInfo
- Publication number
- WO2022164343A1 WO2022164343A1 PCT/RU2021/050426 RU2021050426W WO2022164343A1 WO 2022164343 A1 WO2022164343 A1 WO 2022164343A1 RU 2021050426 W RU2021050426 W RU 2021050426W WO 2022164343 A1 WO2022164343 A1 WO 2022164343A1
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- WIPO (PCT)
- Prior art keywords
- stator
- winding
- tooth
- electric machine
- teeth
- Prior art date
Links
- 238000004804 winding Methods 0.000 title claims abstract description 44
- 230000005405 multipole Effects 0.000 title claims abstract description 11
- 238000000034 method Methods 0.000 title claims abstract description 10
- 238000004870 electrical engineering Methods 0.000 abstract description 2
- 230000004907 flux Effects 0.000 description 6
- 230000006698 induction Effects 0.000 description 4
- 238000005452 bending Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/14—Stator cores with salient poles
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/08—Forming windings by laying conductors into or around core parts
Definitions
- the invention relates to the field of electrical engineering in terms of electrical machines.
- a synchronous electric motor-generator is known (RF patent No. RU 181979 U1 dated 2017.12.29 by Andreenko Alexander Stepanovich), containing a stator with a three-phase winding and a rotor made in the form of a multi-pole magnet with magnetic poles evenly spaced around the circumference of alternating w magnetic poles, with a pitch of pole division 3 0 equal to , while the stator is made with N ⁇ m teeth with symmetrical and asymmetric hats separated by grooves, the winding of the stator winding is made in phase for groups of teeth located symmetrically along the stator circumference at an angular distance from each other, while one group for winding one phase includes teeth with symmetrical and asymmetric caps, and the angular distance between the edges of the caps facing the group of teeth intended for winding another phase is equal to the angular distance between pole divisions of the number of magnetic poles of the rotor, equal to the number of successively located teeth of one group related to one phase.
- the multi-pole stator winding is made on a group of teeth with alternating winding direction.
- the model has the following disadvantage - winding made on a group of stator teeth with alternating winding direction, due to the connecting sections between the teeth, will have an incomplete number of turns on each tooth and, as a result, will have a deviation of the magnetic flux from the axis of the tooth, which leads to a decrease in magnetic voltage on stator poles and the appearance of a lateral magnetic gradient on the active surface of the teeth, which creates an axial force on the motor shaft, while loading the bearings and leading to their increased wear, reducing the efficiency of the electric machine as a whole.
- the fewer turns the stator winding contains the higher the described losses will be and the lower the efficiency of the electric machine.
- the technical problem is the need to create such a winding method that will allow to withstand an integer number of turns, since the transitions of the winding wire from tooth to tooth of the magnetic circuit of an electric machine are also current-carrying parts and create their own magnetic induction fluxes, causing the toothed magnetic induction flux to deviate from the tooth axis, which leads to a decrease in magnetic voltage and a decrease in the efficiency of the electric machine.
- the technical result is to increase the efficiency of the electric machine.
- the claimed method is illustrated by the drawing: Fig. 1 - winding scheme.
- the method of winding the phase windings of the stator of a multi-pole electric machine consists in the fact that the insulated winding wire, made of conductive material, is placed in the grooves between the teeth of the magnetic circuit of the stator of the electric machine, alternately bending around each tooth on the left and right, first in one, then in the opposite direction, thus forming a complete coil around each tooth of the stator magnetic circuit, consisting of two halves.
- the conclusions of the beginning and end of the winding are crossed with each other on the stator tooth in order to obtain a full turn.
- a winding is formed in which all inter-tooth connections are formed by symmetrical half-turn winding elements and the magnetic flux of the teeth of the magnetic circuit has no lateral deviations, while creating the maximum magnetic voltage on the active surfaces of the teeth.
- the proposed method eliminates all possible deviations of the magnetic induction tooth flux from the stator tooth axis and increases the efficiency of electrical machines in which the stator winding has a small amount of turns. This applies to a greater extent to low-voltage electrical machines and high-power electrical machines that have a multi-pole winding with a small number of turns.
- each tooth of the stator magnetic circuit has one turn of the phase winding.
- the winding scheme is shown in figure 1, where number 1 shows the teeth of the magnetic circuit of the electric machine, number 2 shows the winding wire.
- the beginning and end of the winding of the phase winding are designated respectively by the letters H and K.
- the winding leads H and K must cross on the tooth of the stator magnetic circuit, as shown in the figure. In this way, a winding is obtained that does not distort the flux of magnetic induction emanating from the teeth of the magnetic circuit of the stator of the electric machine.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Windings For Motors And Generators (AREA)
Abstract
The invention relates to the field of electrical engineering, specifically pertaining to electric machines. The claimed method for winding the phase windings of a stator of a multipole electric machine consists in that the wire of a multipole phase winding is laid in the slots between the teeth of the magnetic core of the stator, successively skirting each tooth of the magnetic core of the stator, alternately to the left and to the right, first forwards and then backwards, thus forming, around each tooth of the magnetic core of the stator, a turn consisting of two halves. The start and finish leads of the phase winding are crossed over one another on a tooth of the magnetic core of the stator.
Description
Способ намотки фазных обмоток статора многополюсной электрической машины Method of winding phase windings of the stator of a multi-pole electric machine
Изобретение относится к области электротехники в части электрических машин. The invention relates to the field of electrical engineering in terms of electrical machines.
Известен синхронный электрический двигатель-генератор (патент РФ № RU 181979 U1 от 2017.12.29 автора Андреенко Александра Степановича), содержащий статор с трехфазной обмоткой и ротор, выполненный в виде многополюсного магнита с равномерно расположенными по окружности чередующимися ш магнитными полюсами, с шагом полюсного деления 3 0 равным , при этом статор выполнен с N<m зубами со симметричными и асимметричными шляпками, разделенными пазами, намотка обмотки статора выполнена пофазно для групп зубов, расположенных симметрично
по окружности статора на угловом расстоянии друг от друга, при этом в одну группу для намотки одной фазы входят зубы с симметричными и асимметричными шляпками, а угловое расстояние между краями шляпок, обращенными в сторону группы зубов, предназначенной для намотки другой фазы, равно угловому расстоянию между полюсными делениями числа магнитных полюсов ротора, равного числу последовательно расположенных зубов одной группы, относящейся к одной фазе. A synchronous electric motor-generator is known (RF patent No. RU 181979 U1 dated 2017.12.29 by Andreenko Alexander Stepanovich), containing a stator with a three-phase winding and a rotor made in the form of a multi-pole magnet with magnetic poles evenly spaced around the circumference of alternating w magnetic poles, with a pitch of pole division 3 0 equal to , while the stator is made with N<m teeth with symmetrical and asymmetric hats separated by grooves, the winding of the stator winding is made in phase for groups of teeth located symmetrically along the stator circumference at an angular distance from each other, while one group for winding one phase includes teeth with symmetrical and asymmetric caps, and the angular distance between the edges of the caps facing the group of teeth intended for winding another phase is equal to the angular distance between pole divisions of the number of magnetic poles of the rotor, equal to the number of successively located teeth of one group related to one phase.
Многополюсная обмотка статора выполнена на группе зубов с чередованием направления намотки. The multi-pole stator winding is made on a group of teeth with alternating winding direction.
Модель имеет следующий недостаток - намотка, выполненная на группу зубов статора с чередованием направления намотки, засчёт соединительных участков между зубами будет иметь неполное число витков на каждом зубе и как следствие, будет иметь отклонение магнитного потока от оси зуба, которое приводит к снижению магнитного напряжения на полюсах статора и появлению бокового магнитного градиента на активной поверхности зубов, который создаёт осевое усилие на вал двигателя, нагружая при этом подшипники и приводя к их повышенному
износу, снижая эффективность электрической машины в целом. При этом, чем меньше витков содержит обмотка статора, тем выше будут описанные потери и ниже эффективность электрической машины. The model has the following disadvantage - winding made on a group of stator teeth with alternating winding direction, due to the connecting sections between the teeth, will have an incomplete number of turns on each tooth and, as a result, will have a deviation of the magnetic flux from the axis of the tooth, which leads to a decrease in magnetic voltage on stator poles and the appearance of a lateral magnetic gradient on the active surface of the teeth, which creates an axial force on the motor shaft, while loading the bearings and leading to their increased wear, reducing the efficiency of the electric machine as a whole. At the same time, the fewer turns the stator winding contains, the higher the described losses will be and the lower the efficiency of the electric machine.
Техническая задача состоит в необходимости создания такого способа намотки, который позволит выдерживать целое число витков, поскольку переходы обмоточного провода с зуба на зуб магнитопровода электрической машины также являются токоведущими частями и создают собственные потоки магнитной индукции, вызывающие отклонение зубцового потока магнитной индукции от оси зуба, что приводит к понижению магнитного напряжения и уменьшению эффективности электрической машины. The technical problem is the need to create such a winding method that will allow to withstand an integer number of turns, since the transitions of the winding wire from tooth to tooth of the magnetic circuit of an electric machine are also current-carrying parts and create their own magnetic induction fluxes, causing the toothed magnetic induction flux to deviate from the tooth axis, which leads to a decrease in magnetic voltage and a decrease in the efficiency of the electric machine.
Технический результат заключается в повышении эффективности работы электрической машины. The technical result is to increase the efficiency of the electric machine.
Заявленный способ поясняется чертежом: фиг. 1 - схема намотки.The claimed method is illustrated by the drawing: Fig. 1 - winding scheme.
Способ намотки фазных обмоток статора многополюсной электрической машины заключается в том, что изолированный провод обмотки, выполненный из токопроводящего материала, укладывают в пазы между зубами магнитопровода статора электрической машины, поочередно огибая слева и справа каждый зуб сначала в одном, затем в обратном направлении, таким образом формируя вокруг каждого зуба магнитопровода статора полный виток, состоящий из двух половин. Выводы начала и конца обмотки перекрещивают между собой на зубе статора, чтобы получить полный виток. Таким образом формируют обмотку, в которой все межзубовые соединения сформированы симметричными полувитковыми элементами намотки и магнитный поток зубов магнитопровода не имеет боковых отклонений, создавая при этом максимальное магнитное напряжение на активных поверностях зубов. The method of winding the phase windings of the stator of a multi-pole electric machine consists in the fact that the insulated winding wire, made of conductive material, is placed in the grooves between the teeth of the magnetic circuit of the stator of the electric machine, alternately bending around each tooth on the left and right, first in one, then in the opposite direction, thus forming a complete coil around each tooth of the stator magnetic circuit, consisting of two halves. The conclusions of the beginning and end of the winding are crossed with each other on the stator tooth in order to obtain a full turn. Thus, a winding is formed in which all inter-tooth connections are formed by symmetrical half-turn winding elements and the magnetic flux of the teeth of the magnetic circuit has no lateral deviations, while creating the maximum magnetic voltage on the active surfaces of the teeth.
Предлагаемый способ исключает все возможные отклонения зубового потока магнитной индукции от оси зуба статора и повышает эффективность электрических машин, в которых обмотка статора имеет малое количество
витков. Это в большей степени касается низковольтных электрических машин и электрических машин большой мощности, которые имеют многополюсную обмотку с малым количеством витков. The proposed method eliminates all possible deviations of the magnetic induction tooth flux from the stator tooth axis and increases the efficiency of electrical machines in which the stator winding has a small amount of turns. This applies to a greater extent to low-voltage electrical machines and high-power electrical machines that have a multi-pole winding with a small number of turns.
Для примера рассмотрим «одновитковую» обмотку, где на каждом зубе магнитопровода статора выполнен один виток фазной обмотки. Схема намотки показана на фиг.1, где под номером 1 изображены зубы магнитопровода электрической машины, под номером 2 изображён провод обмотки. Начало и конец обмотки фазной обмотки обозначены соответственно буквами Н и К. Выводы обмотки Н и К должны перекрещиваться на зубе магнитопровода статора, как это показано на рисунке. Таким образом получают обмотку, которая не искажает поток магнитной индукции, исходящий из зубов магнитопровода статора электрической машины. For example, consider a "single-turn" winding, where each tooth of the stator magnetic circuit has one turn of the phase winding. The winding scheme is shown in figure 1, where number 1 shows the teeth of the magnetic circuit of the electric machine, number 2 shows the winding wire. The beginning and end of the winding of the phase winding are designated respectively by the letters H and K. The winding leads H and K must cross on the tooth of the stator magnetic circuit, as shown in the figure. In this way, a winding is obtained that does not distort the flux of magnetic induction emanating from the teeth of the magnetic circuit of the stator of the electric machine.
Практическая реализация способа: Practical implementation of the method:
Описанным способом были перемотаны несколько флагманских моделей велосипедных мотор-колёс от различных ведущих производителей. Количество витков и схема соединения обмоток при этом были оставлены такими же, как в оригинале. Остальные элементы мотор-колёс были оставлены без изменения. Испытания после перемотки во всех случаях показали увеличение КПД моторов на 5-7%. В режиме генерации, перемотанные мотор-колёса показали увеличение генерируемого напряжения на 5-7%.
In the described way, several flagship models of bicycle motor-wheels from various leading manufacturers were rewound. The number of turns and the winding connection scheme were left the same as in the original. The remaining elements of the motor-wheels were left unchanged. Tests after rewinding in all cases showed an increase in the efficiency of motors by 5-7%. In the generation mode, the rewound motor-wheels showed an increase in the generated voltage by 5-7%.
Claims
1. Способ намотки фазных обмоток статора многополюсной электрической машины, заключающийся в том, что провод фазной многополюсной обмотки укладывают в пазы между зубами магнитопровода статора, поочередно слева и справа огибая каждый зуб магнитопровода статора последовательно сначала в прямом, затем в обратном направлении, таким образом формируя вокруг каждого зуба магнитопровода статора виток, состоящий из двух половин. 1. The method of winding the phase windings of the stator of a multi-pole electric machine, which consists in the fact that the wire of the phase multi-pole winding is placed in the grooves between the teeth of the stator magnetic circuit, alternately from the left and right around each tooth of the stator magnetic circuit successively, first in the forward direction, then in the opposite direction, thus forming around each tooth of the stator magnetic circuit there is a coil consisting of two halves.
2. Способ намотки фазных обмоток статора многополюсной электрической машины по п.1 отличающийся тем, что выводы начала и конца фазной обмотки перекрещивают между собой на зубе магнитопровода статора. 2. The method of winding the phase windings of the stator of a multi-pole electric machine according to claim 1, characterized in that the conclusions of the beginning and end of the phase winding cross each other on the tooth of the stator magnetic circuit.
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Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RU2021101522A RU2751533C1 (en) | 2021-01-26 | 2021-01-26 | Method for winding phase stator windings of multi-pole electric machine |
| RU2021101522 | 2021-01-26 |
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| Publication Number | Publication Date |
|---|---|
| WO2022164343A1 true WO2022164343A1 (en) | 2022-08-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/RU2021/050426 WO2022164343A1 (en) | 2021-01-26 | 2021-12-09 | Method for winding the phase windings of a stator of a multipole electric machine |
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| Country | Link |
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| RU (1) | RU2751533C1 (en) |
| WO (1) | WO2022164343A1 (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2330368C2 (en) * | 2002-07-10 | 2008-07-27 | Квебек Метал Паудерс Лимитед | Multi-phase structures of toothed terminals for electric machine |
| RU2341861C2 (en) * | 2004-02-24 | 2008-12-20 | Валео Экипман Электрик Мотер | Method of wave winding installation in stator of multi-phase rotating electric machine and stator that relates to it |
| RU2453968C2 (en) * | 2010-09-10 | 2012-06-20 | Федеральное государственное образовательное учреждение высшего профессионального образования "Чувашский государственный университет имени И.Н. Ульянова" | Single-phase valve electric drive |
| RU181979U1 (en) * | 2017-12-29 | 2018-07-31 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Московский государственный университет имени М.В. Ломоносова" (МГУ) | SYNCHRONOUS ELECTRIC MOTOR GENERATOR |
| RU2716007C1 (en) * | 2018-01-15 | 2020-03-05 | Тойота Дзидося Кабусики Кайся | Stator of rotating electric machine and method of stator coil manufacturing |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1140639B (en) * | 1960-07-30 | 1962-12-06 | Siemens Ag | Liquid-cooled stator winding for electrical generators with conductor bars twisted from waveguides |
| US3978359A (en) * | 1974-10-30 | 1976-08-31 | Westinghouse Electric Corporation | Coil end insulation for dynamoelectric machines |
| FR2608334B1 (en) * | 1986-12-16 | 1989-03-31 | Paris & Du Rhone | METHOD OF WINDING AN ELECTRIC ROTATING MACHINE STATOR, AND DEVICE FOR CARRYING OUT SAID METHOD |
-
2021
- 2021-01-26 RU RU2021101522A patent/RU2751533C1/en active
- 2021-12-09 WO PCT/RU2021/050426 patent/WO2022164343A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2330368C2 (en) * | 2002-07-10 | 2008-07-27 | Квебек Метал Паудерс Лимитед | Multi-phase structures of toothed terminals for electric machine |
| RU2341861C2 (en) * | 2004-02-24 | 2008-12-20 | Валео Экипман Электрик Мотер | Method of wave winding installation in stator of multi-phase rotating electric machine and stator that relates to it |
| RU2453968C2 (en) * | 2010-09-10 | 2012-06-20 | Федеральное государственное образовательное учреждение высшего профессионального образования "Чувашский государственный университет имени И.Н. Ульянова" | Single-phase valve electric drive |
| RU181979U1 (en) * | 2017-12-29 | 2018-07-31 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Московский государственный университет имени М.В. Ломоносова" (МГУ) | SYNCHRONOUS ELECTRIC MOTOR GENERATOR |
| RU2716007C1 (en) * | 2018-01-15 | 2020-03-05 | Тойота Дзидося Кабусики Кайся | Stator of rotating electric machine and method of stator coil manufacturing |
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| RU2751533C1 (en) | 2021-07-14 |
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