CN106849451B - Star-shaped contact ring structure of rotor winding of doubly-fed asynchronous wind generator - Google Patents
Star-shaped contact ring structure of rotor winding of doubly-fed asynchronous wind generator Download PDFInfo
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- CN106849451B CN106849451B CN201611212834.4A CN201611212834A CN106849451B CN 106849451 B CN106849451 B CN 106849451B CN 201611212834 A CN201611212834 A CN 201611212834A CN 106849451 B CN106849451 B CN 106849451B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/46—Fastening of windings on the stator or rotor structure
- H02K3/50—Fastening of winding heads, equalising connectors, or connections thereto
- H02K3/51—Fastening of winding heads, equalising connectors, or connections thereto applicable to rotors only
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Insulation, Fastening Of Motor, Generator Windings (AREA)
Abstract
The invention discloses a star-shaped contact ring structure of a rotor winding of a double-fed asynchronous wind driven generator, which solves the problems that the existing star-shaped contact ring structure is easy to crack and the integral length of a motor is increased. The end part of a winding connecting vertical section (6) of the L-shaped connecting piece is welded with an upper layer rotor winding (3) after passing through a lower layer rotor winding insulation gap (5), an insulation layer is arranged between the lower layer rotor winding insulation gap (5) and the end part of the winding connecting vertical section (6), six L-shaped connecting pieces are arranged at the end part of a lower layer rotor winding (4) at equal intervals in a radian manner, star rings (8) are arranged between the end parts of star ring connecting horizontal sections (7) of the six L-shaped connecting pieces, and the end parts of the star ring connecting horizontal sections (7) of the L-shaped connecting pieces are welded with the star rings (8) through rivet welding holes (13). Effectively shortens the length of the end part of the winding and the length of the connecting piece, and greatly improves the running reliability of the motor.
Description
Technical Field
The invention relates to a double-fed asynchronous wind driven generator, in particular to a star-shaped contact ring of a rotor winding of the double-fed asynchronous wind driven generator.
Background
In the double-fed asynchronous wind driven generator, a star-shaped contact ring of a rotor winding consists of a star ring and a connecting piece, a riveting and brazing structure is adopted between the star ring and the connecting piece, and after riveting and brazing are completed, insulation wrapping is carried out. The star-shaped contact ring is arranged at the end part of the rotor winding and plays a role in connecting the windings at intervals. At present, the star connection ring structure of the wind driven generator rotor is that a star ring is supported on a motor shaft through a connecting piece, and the star connection ring structure has the following defects: (1) The connecting piece is an L-shaped connecting piece and is formed by bending a copper bus. The structure is prone to micro-defects during bending. In the operation process of the motor, the L-shaped connecting piece can be broken at the L-shaped angle under the stretching of external force and the combined action of the thermal stress of the L-shaped connecting piece. (2) The star point ring junction is configured such that the rotor winding end length increases, resulting in an increase in the overall length of the motor.
Disclosure of Invention
The invention provides a double-fed asynchronous wind driven generator rotor winding star-shaped contact ring structure, which solves the technical problems that the existing star-shaped contact ring structure is easy to crack and the integral length of a motor is increased.
The invention solves the technical problems by the following technical scheme:
a star-shaped contact ring structure of a rotor winding of a double-fed asynchronous wind driven generator comprises a rotor core and L-shaped connecting pieces, wherein the rotor winding is arranged on the rotor core respectively, the rotor winding consists of an upper rotor winding and a lower rotor winding, a lower rotor winding insulation gap is arranged at the end part of the lower rotor winding, the L-shaped connecting pieces consist of winding connecting vertical sections, transition circular ring sections and star ring connecting horizontal sections, welding connecting grooves are formed in the end parts of the winding connecting vertical sections, rivet welding holes are formed in the end parts of the star ring connecting horizontal sections, the end parts of the winding connecting vertical sections of the L-shaped connecting pieces are welded with the upper rotor winding after passing through the insulation gaps of the lower rotor winding, an insulation layer is arranged between the insulation gaps of the lower rotor winding and the end parts of the winding connecting vertical sections, six L-shaped connecting pieces are arranged at equal intervals in an arc manner at the end parts of the lower rotor winding, star rings are arranged between the end parts of the star ring connecting horizontal sections of the six L-shaped connecting pieces, and the end parts of the star ring connecting horizontal sections of the L-shaped connecting pieces are welded with the star rings through the rivet welding holes.
One side of the star ring is fixedly connected with an insulating support ring, the insulating support ring is connected to a rotor shaft of the wind driven generator in a penetrating mode through a center hole of the insulating support ring, a binding arc-shaped hole is formed in the outer circle of the insulating support ring, and the insulating binding belt penetrates through the binding arc-shaped hole and then is bound with the star ring.
The invention has the general conception that the star-shaped contact ring of the rotor winding of the double-fed asynchronous wind driven generator, namely the star ring, is arranged on the inner side of the end part of the lower layer rotor winding, so that the integral length of the motor cannot be increased due to the star ring connecting structure, and meanwhile, the L-shaped connecting piece is manufactured in an integral processing mode and is not bent, so that the consistency and the controllability of the manufacturing process of the connecting piece are improved, and the reliability of the connecting piece is effectively improved.
The invention enhances the strength of the star-shaped contact ring of the rotor winding of the double-fed asynchronous wind driven generator, effectively shortens the length of the end part of the winding and the length of the connecting piece, and greatly improves the running reliability of the motor.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of an L-shaped connector of the present invention;
fig. 3 is a schematic structural view of the insulating support ring 10 of the present invention in a front view direction;
FIG. 4 is a schematic structural view of the insulating support ring 10 of the present invention in a side view;
fig. 5 is a diagram of the fit relationship between the rotor winding, the insulating support ring 10 and the star ring 8 of the present invention.
Detailed Description
The invention is described in detail below with reference to the attached drawing figures:
a star-shaped contact ring structure of a rotor winding of a double-fed asynchronous wind driven generator comprises a rotor core 1 and L-shaped connecting pieces, wherein the rotor core 1 is respectively provided with a rotor winding 2, the rotor winding 2 consists of an upper rotor winding 3 and a lower rotor winding 4, the end part of the lower rotor winding 4 is provided with a lower rotor winding insulation gap 5, the L-shaped connecting pieces consist of winding connecting vertical sections 6, transition circular ring sections 12 and star ring connecting horizontal sections 7, the end part of the winding connecting vertical section 6 is provided with a welding connecting groove 11, the end part of the star ring connecting horizontal section 7 is provided with rivet welding holes 13, the end part of the winding connecting vertical section 6 of the L-shaped connecting pieces is welded with the upper rotor winding 3 after passing through the lower rotor winding insulation gap 5, an insulation layer is arranged between the lower rotor winding insulation gap 5 and the end part of the winding connecting vertical section 6, six L-shaped connecting pieces are arranged at equal intervals at the end part of the lower rotor winding 4, star rings 8 are arranged between the end parts of the star ring connecting horizontal sections 7 of the six L-shaped connecting pieces, and the end parts of the star ring connecting horizontal sections 7 of the L-shaped connecting pieces are welded together with the star ring connecting holes 13.
An insulating support ring 10 is fixedly connected to one side of the star ring 8, the insulating support ring 10 penetrates through a central hole 15 of the insulating support ring and is connected to a rotor shaft of the wind driven generator, a binding arc-shaped hole 14 is formed in the outer circle of the insulating support ring 10, and an insulating binding belt 9 penetrates through the binding arc-shaped hole 14 and is bound with the star ring 8.
And a riveting and brazing structure is adopted between the star ring 8 and the L-shaped connecting piece, and after riveting and brazing are completed, insulation wrapping is carried out. The star ring 8 is arranged at the end part of the rotor winding and plays a role in connecting the windings at intervals.
Claims (2)
1. A star-shaped contact ring structure of a rotor winding of a double-fed asynchronous wind driven generator comprises a rotor core (1) and an L-shaped connecting piece, the rotor iron core (1) is respectively provided with a rotor winding (2), the rotor winding (2) is composed of an upper rotor winding (3) and a lower rotor winding (4), the end part of the lower layer rotor winding (4) is provided with a lower layer rotor winding insulation gap (5), it is characterized in that the L-shaped connecting piece consists of a winding connecting vertical section (6), a transition circular ring section (12) and a star ring connecting horizontal section (7), the end part of the winding connecting vertical section (6) is provided with a welding connecting groove (11), rivet welding holes (13) are arranged at the end parts of the star ring connecting horizontal sections (7), the end parts of the winding connecting vertical sections (6) of the L-shaped connecting pieces are welded with the upper layer rotor winding (3) after passing through the insulation gap (5) of the lower layer rotor winding, an insulating layer is arranged between the insulating gap (5) of the lower layer rotor winding and the end part of the winding connecting vertical section (6), six L-shaped connecting pieces are arranged at the end part of the lower layer rotor winding (4) at equal intervals in a radian way, star rings (8) are arranged between the end parts of the star ring connecting horizontal sections (7) of the six L-shaped connecting pieces, and the end parts of the star ring connecting horizontal sections (7) of the L-shaped connecting pieces are welded with the star rings (8) through rivet welding holes (13); the star ring (8) is arranged on the inner side of the end part of the lower layer rotor winding (4).
2. The star-shaped contact ring structure of the rotor winding of the doubly-fed asynchronous wind generator according to claim 1, characterized in that an insulating support ring (10) is fixedly connected to one side of the star ring (8), the insulating support ring (10) is connected to a rotor shaft of the wind generator in a penetrating manner through a center hole (15) of the insulating support ring, a binding arc-shaped hole (14) is formed in the outer circle of the insulating support ring (10), and the insulating binding belt (9) penetrates through the binding arc-shaped hole (14) and then is bound with the star ring (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611212834.4A CN106849451B (en) | 2016-12-25 | 2016-12-25 | Star-shaped contact ring structure of rotor winding of doubly-fed asynchronous wind generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611212834.4A CN106849451B (en) | 2016-12-25 | 2016-12-25 | Star-shaped contact ring structure of rotor winding of doubly-fed asynchronous wind generator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106849451A CN106849451A (en) | 2017-06-13 |
| CN106849451B true CN106849451B (en) | 2023-03-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611212834.4A Active CN106849451B (en) | 2016-12-25 | 2016-12-25 | Star-shaped contact ring structure of rotor winding of doubly-fed asynchronous wind generator |
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| AU7576494A (en) * | 1993-10-15 | 1995-05-25 | Nippondenso Co. Ltd. | Electric rotating machine |
| JP2002233123A (en) * | 2001-02-02 | 2002-08-16 | Mitsubishi Electric Corp | Rotating electric machine |
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| CN203312950U (en) * | 2013-06-28 | 2013-11-27 | 湘潭电机股份有限公司 | Connecting wire structure between motor stator windings |
| CN104218715A (en) * | 2014-10-10 | 2014-12-17 | 哈尔滨电机厂有限责任公司 | Double-pressing plate fixing structure for end part of rotor winding of large-scale alternating current excitation generator motor |
| CN104969450A (en) * | 2012-12-20 | 2015-10-07 | 喜利得股份公司 | Rotor assembly having a functional carrier |
| CN105375697A (en) * | 2014-08-29 | 2016-03-02 | Abb技术有限公司 | Apparatus for conducting current between rotor winding and slip ring device and motor |
| CN105706343A (en) * | 2013-11-06 | 2016-06-22 | 罗伯特·博世有限公司 | Method and rotor for producing a short winding head |
| CN206389203U (en) * | 2016-12-25 | 2017-08-08 | 中船重工电机科技股份有限公司 | The star point ring structure of double fed asynchronous wind power generator rotor winding |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8222780B2 (en) * | 2010-10-25 | 2012-07-17 | General Electric Company | Generator rotor main lead support and lead path configuration |
| JP6227501B2 (en) * | 2014-08-08 | 2017-11-08 | 株式会社日立製作所 | Neutral ring of rotating electric machine and its manufacturing method |
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2016
- 2016-12-25 CN CN201611212834.4A patent/CN106849451B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU7576494A (en) * | 1993-10-15 | 1995-05-25 | Nippondenso Co. Ltd. | Electric rotating machine |
| CN1114795A (en) * | 1993-10-15 | 1996-01-10 | 日本电装株式会社 | rotating electrical machine |
| JP2002233123A (en) * | 2001-02-02 | 2002-08-16 | Mitsubishi Electric Corp | Rotating electric machine |
| JP2007028822A (en) * | 2005-07-19 | 2007-02-01 | Asmo Co Ltd | Commutator and armature |
| CN103094999A (en) * | 2011-11-02 | 2013-05-08 | 株式会社东芝 | Stator for rotating machine, holder for use with stator, rotating machine, and automobile |
| CN102723797A (en) * | 2012-06-26 | 2012-10-10 | 东方电气（乐山）新能源设备有限公司 | Novel neutral point jointing structure of wind driven generator rotor |
| CN104969450A (en) * | 2012-12-20 | 2015-10-07 | 喜利得股份公司 | Rotor assembly having a functional carrier |
| CN203312950U (en) * | 2013-06-28 | 2013-11-27 | 湘潭电机股份有限公司 | Connecting wire structure between motor stator windings |
| CN105706343A (en) * | 2013-11-06 | 2016-06-22 | 罗伯特·博世有限公司 | Method and rotor for producing a short winding head |
| CN105375697A (en) * | 2014-08-29 | 2016-03-02 | Abb技术有限公司 | Apparatus for conducting current between rotor winding and slip ring device and motor |
| CN104218715A (en) * | 2014-10-10 | 2014-12-17 | 哈尔滨电机厂有限责任公司 | Double-pressing plate fixing structure for end part of rotor winding of large-scale alternating current excitation generator motor |
| CN206389203U (en) * | 2016-12-25 | 2017-08-08 | 中船重工电机科技股份有限公司 | The star point ring structure of double fed asynchronous wind power generator rotor winding |
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| CN106849451A (en) | 2017-06-13 |
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