WO2000011775A1 - Stator pour moteur d'entrainement electrique - Google Patents
Stator pour moteur d'entrainement electrique Download PDFInfo
- Publication number
- WO2000011775A1 WO2000011775A1 PCT/DE1999/001742 DE9901742W WO0011775A1 WO 2000011775 A1 WO2000011775 A1 WO 2000011775A1 DE 9901742 W DE9901742 W DE 9901742W WO 0011775 A1 WO0011775 A1 WO 0011775A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- tooth
- stator
- teeth
- coils
- several
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
- H02K3/12—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors arranged in slots
-
- 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
- H02K1/16—Stator cores with slots for windings
- H02K1/165—Shape, form or location of the slots
Definitions
- the invention relates to a stator for an electric drive motor with a number of stator teeth separated by grooves and with a multi-strand winding, in particular three-phase winding, wherein one strand comprises several coils and individual coils each comprise several teeth.
- Grooved stators for electric drive motors with a number of symmetrical stator teeth and a multi-phase three-phase winding are known.
- FIG. 1 An example of a known 24-slot stator is shown in FIG. 1.
- a three-strand or multi-strand three-phase winding (star winding) is constructed in such a way that the individual coils 1, 2 each comprise several teeth 3 and overlap one another.
- the lower-lying coils 1 prevent the subsequent coils from sliding into the bottom of the slot. The grooves are therefore poorly used.
- a high winding head results from the overlying coils. 1 is the
- the efficiency of a stator is essentially determined by its slot filling, i.e. the total conductor cross-section in relation to the total area of the stator.
- the invention is therefore based on the object of improving a stator for electric drive motors of the generic type in such a way that a higher slot filling is made possible.
- stator for an electric drive motor of the type described at the outset by combining a plurality of stator teeth, preferably at about half the height of the tooth neck, to form one tooth (combined tooth).
- stator teeth into one tooth has the important advantage that the asymmetrical, specific design of the stator teeth achieves a high conductor cross-section per slot area, that is, a high nu filling factor, and thus a high power density and high efficiency of the electric drive motor comes about .
- the stator according to the invention also enables the use of a lower and simpler winding head. This reduces the winding times and the winding resistance. The latter also results in a higher power density and a higher efficiency of the electric drive motor.
- the coils are wound magnetically overlapping on the stator according to the invention, but are advantageously mechanically separated from one another.
- a particularly advantageous embodiment of the stator according to the invention provides that three stator teeth, preferably halfway up the tooth neck, are combined to form a tooth with three tooth heads.
- stator according to the invention is that the basic groove diameter r can be smaller than that of comparable conventional stators, since not all grooves are guided inwards and the individual grooves do not taper as strongly towards the inside. This applies in particular to multi-slot stators. This enables the lower region of the tooth base of the combined tooth to be wider than the tooth base of the original individual teeth. In addition, due to the smaller groove base diameter better use of the installation space, ie a higher power density achieved.
- a further advantageous embodiment of the invention is characterized in that a single tooth follows each grouped tooth and this arrangement is repeated several times, in particular 6 times, on the circumference of the stator.
- winding comprises three strands and four coils per strand.
- two coils are preferably arranged in the outer upper grooves, while the other two coils are arranged in the inner lower grooves.
- the two coils at the top and the two coils at the bottom of a strand can advantageously be electrically connected in series with one another. As a result, the winding resistance of all strands is the same.
- FIG. 2 shows a sectional view of a stator with 24 teeth, three stator teeth being combined 6 times to form a tooth with three tooth heads.
- the three-strand winding scheme with four coils per strand is also shown.
- the exemplary embodiment described by way of example, shown in FIG. 2, is a 24-slot stator with a three-strand star winding and an 8-pole magnetic circuit.
- three stator teeth form a magnetic pole.
- the coils of the winding, in particular the three-phase winding, each comprise three teeth, with only the north pole (or alternatively the south pole) being wound.
- the cut of the stator core is designed in such a way that three teeth 4, 5 and 6 are combined into one tooth at about half the height of the tooth neck 7.
- the fourth tooth 8 stands individually.
- the tooth tips 9 of the outer teeth of the combined tooth can be arranged asymmetrically on their respective tooth necks 10.
- the lower region 11 of the tooth base of the combined tooth is dimensioned wider than the tooth base of the original individual teeth.
- the exemplary embodiment described here has three coil strands.
- four coils 20 to 23 must be wound, two coils 21 and 23 each falling into the outer upper grooves, while the other two coils 20 and 22 come into the inner lower grooves.
- the winding resistance is initially different in the lower and upper coils due to the different wire lengths. In relation to the entire strand, however, this is compensated for again, since each strand is composed of two lower and two upper coils connected in series. The strands therefore have the same resistances and the current supply is symmetrical.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Windings For Motors And Generators (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
L'invention concerne un stator destiné à un moteur d'entraînement électrique, comportant une pluralité de dents de stator séparées par des rainures et un enroulement pour courant triphasé, par exemple à plusieurs phases, une phase comprenant plusieurs bobines (20 à 23) et les différentes bobines entourant chacune plusieurs dents. Afin d'améliorer un tel stator de façon à obtenir un remplissage des rainures plus haut et donc un degré d'efficacité plus élevé, il est proposé que plusieurs dents de stator (4, 5, 6), de préférence à mi-hauteur du col de la dent, soient assemblées pour former une dent comportant plusieurs têtes de dent.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19838335.5 | 1998-08-24 | ||
DE1998138335 DE19838335A1 (de) | 1998-08-24 | 1998-08-24 | Stator für einen elektrischen Antriebsmotor |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2000011775A1 true WO2000011775A1 (fr) | 2000-03-02 |
Family
ID=7878489
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE1999/001742 WO2000011775A1 (fr) | 1998-08-24 | 1999-06-15 | Stator pour moteur d'entrainement electrique |
Country Status (3)
Country | Link |
---|---|
DE (1) | DE19838335A1 (fr) |
TW (1) | TW431050B (fr) |
WO (1) | WO2000011775A1 (fr) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8013491B2 (en) | 2006-08-15 | 2011-09-06 | Robert Bosch Gmbh | Stator for an electric drive motor |
WO2017092191A1 (fr) * | 2015-12-02 | 2017-06-08 | 中山大洋电机股份有限公司 | Tôle de stator, ensemble stator et moteur à rotor externe |
WO2017113512A1 (fr) * | 2015-12-31 | 2017-07-06 | 中山大洋电机股份有限公司 | Tôle perforée de stator, ensemble stator, et moteur à rotor externe |
US20170222503A1 (en) * | 2015-01-21 | 2017-08-03 | Zhongshan Broad-Ocean Motor Co., Ltd. | External rotor motor and air conditioner comprising the same |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007030980A1 (de) | 2007-07-04 | 2009-01-08 | Robert Bosch Gmbh | Stator für einen elektrischen Antriebsmotor |
DE102008011230A1 (de) * | 2008-01-15 | 2009-07-16 | Robert Bosch Gmbh | Stator eines elektronisch kommutierten Läufermotors |
US8896178B2 (en) * | 2010-02-16 | 2014-11-25 | Panasonic Corporation | Synchronous electric motor drive system having slit windings |
CN108123560B (zh) | 2016-11-30 | 2021-10-26 | 亨特风扇公司 | 用于吊扇的电动机的定子 |
FR3065591B1 (fr) * | 2017-04-20 | 2021-01-01 | Valeo Equip Electr Moteur | Machine electrique tournante a largeur d'encoche statorique variable |
JP7255348B2 (ja) * | 2019-05-17 | 2023-04-11 | 日本電産株式会社 | ステータ、モータおよび送風装置 |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1488844A1 (de) * | 1964-09-08 | 1969-08-07 | Biglino Soc Nome Coll Flli | Elektrischer Motor mit Innenstaender und mindestens zwei Staenderwicklungen verschiedener Polpaarzahl |
US4260925A (en) * | 1978-04-17 | 1981-04-07 | Barrett Edward L | Stator for an electromagnetic transducer |
US4935653A (en) * | 1989-05-12 | 1990-06-19 | Peter Cheng | Stator for a ceiling fan |
JPH0522912A (ja) * | 1991-06-24 | 1993-01-29 | Shibaura Eng Works Co Ltd | 電動機 |
JPH06178471A (ja) * | 1992-12-08 | 1994-06-24 | Shibaura Eng Works Co Ltd | 小形回転電機 |
JPH08205491A (ja) * | 1995-01-20 | 1996-08-09 | Fujitsu General Ltd | 電動機 |
JPH09205743A (ja) * | 1996-01-26 | 1997-08-05 | Matsushita Electric Ind Co Ltd | 誘導電動機の固定子 |
JPH09261900A (ja) * | 1996-03-19 | 1997-10-03 | Fujitsu General Ltd | 電動機 |
JPH09261928A (ja) * | 1996-03-19 | 1997-10-03 | Fujitsu General Ltd | 電動機 |
-
1998
- 1998-08-24 DE DE1998138335 patent/DE19838335A1/de not_active Withdrawn
-
1999
- 1999-06-15 WO PCT/DE1999/001742 patent/WO2000011775A1/fr active Application Filing
- 1999-06-22 TW TW88110419A patent/TW431050B/zh active
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1488844A1 (de) * | 1964-09-08 | 1969-08-07 | Biglino Soc Nome Coll Flli | Elektrischer Motor mit Innenstaender und mindestens zwei Staenderwicklungen verschiedener Polpaarzahl |
US4260925A (en) * | 1978-04-17 | 1981-04-07 | Barrett Edward L | Stator for an electromagnetic transducer |
US4935653A (en) * | 1989-05-12 | 1990-06-19 | Peter Cheng | Stator for a ceiling fan |
JPH0522912A (ja) * | 1991-06-24 | 1993-01-29 | Shibaura Eng Works Co Ltd | 電動機 |
JPH06178471A (ja) * | 1992-12-08 | 1994-06-24 | Shibaura Eng Works Co Ltd | 小形回転電機 |
JPH08205491A (ja) * | 1995-01-20 | 1996-08-09 | Fujitsu General Ltd | 電動機 |
JPH09205743A (ja) * | 1996-01-26 | 1997-08-05 | Matsushita Electric Ind Co Ltd | 誘導電動機の固定子 |
JPH09261900A (ja) * | 1996-03-19 | 1997-10-03 | Fujitsu General Ltd | 電動機 |
JPH09261928A (ja) * | 1996-03-19 | 1997-10-03 | Fujitsu General Ltd | 電動機 |
Non-Patent Citations (5)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 17, no. 307 (E - 1379) 11 June 1993 (1993-06-11) * |
PATENT ABSTRACTS OF JAPAN vol. 18, no. 515 (E - 1611) 28 September 1994 (1994-09-28) * |
PATENT ABSTRACTS OF JAPAN vol. 1996, no. 12 26 December 1996 (1996-12-26) * |
PATENT ABSTRACTS OF JAPAN vol. 1997, no. 12 25 December 1997 (1997-12-25) * |
PATENT ABSTRACTS OF JAPAN vol. 1998, no. 2 30 January 1998 (1998-01-30) * |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8013491B2 (en) | 2006-08-15 | 2011-09-06 | Robert Bosch Gmbh | Stator for an electric drive motor |
CN101507083B (zh) * | 2006-08-15 | 2011-11-30 | 罗伯特·博世有限公司 | 用于电驱动马达的定子 |
US20170222503A1 (en) * | 2015-01-21 | 2017-08-03 | Zhongshan Broad-Ocean Motor Co., Ltd. | External rotor motor and air conditioner comprising the same |
US10491060B2 (en) * | 2015-01-21 | 2019-11-26 | Zhongshan Broad-Ocean Motor Co., Ltd. | External rotor motor and air conditioner comprising the same |
WO2017092191A1 (fr) * | 2015-12-02 | 2017-06-08 | 中山大洋电机股份有限公司 | Tôle de stator, ensemble stator et moteur à rotor externe |
WO2017113512A1 (fr) * | 2015-12-31 | 2017-07-06 | 中山大洋电机股份有限公司 | Tôle perforée de stator, ensemble stator, et moteur à rotor externe |
Also Published As
Publication number | Publication date |
---|---|
TW431050B (en) | 2001-04-21 |
DE19838335A1 (de) | 2000-03-02 |
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