CN204334268U - A kind of two fractional-slot concentratred winding Short Circuit withstand permanent magnet generator - Google Patents
A kind of two fractional-slot concentratred winding Short Circuit withstand permanent magnet generator Download PDFInfo
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- CN204334268U CN204334268U CN201420819585.5U CN201420819585U CN204334268U CN 204334268 U CN204334268 U CN 204334268U CN 201420819585 U CN201420819585 U CN 201420819585U CN 204334268 U CN204334268 U CN 204334268U
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- winding
- phase
- fractional
- short circuit
- permanent magnet
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Abstract
The utility model discloses a kind of two fractional-slot concentratred winding Short Circuit withstand permanent magnet generator, generator unit stator 24 groove, number of poles 20 pole, it is characterized by generator amature is permanent magnetic field, generator unit stator is two fractional-slot concentratred winding, namely lay 2 cover three-phase symmetrical fractional slot winding in generator unit stator groove, its coil span is Y=1.Wherein a set of three-phase symmetrical two layer winding is generating winding and main winding, another set of three-phase symmetrical single layer winding is auxiliary winding, assist between winding and main winding without mutual inductance, generation electromotive force is not responded to yet, auxiliary winding corresponding series connection each with main winding, external phase three-wire three output AC voltage, assists winding that load current can be suppressed to distort, improves band non-linear load capacity during steady operation; Assist winding to limit short circuit current when generator short circuit, make permanent magnet generator itself have strong anti-short circuit capability, improve the reliability of generator and electric power system.
Description
Technical field
The utility model relates to a kind of power equipment, and what be specifically related to is a kind of two fractional-slot concentratred winding Short Circuit withstand permanent magnet generator.
Background technology
Permanent magnet generator is widely used day by day, it is simple that permanent magnet generator has structure, efficiency advantages of higher, but also have some defects, such as voltage-regulation difficulty, during high speed, short circuit current is very large, permanent magnet is easily caused to demagnetize, winding is easy to burn, and wherein voltage-regulation difficult problem has the solution of multiple composite excitation mode, does not relate in this invention scope.And how to improve the anti-short circuit capability of permanent magnet generator own, then an or at present technological difficulties problem in industry.
Summary of the invention
The purpose of this utility model is the new construction providing a kind of permanent magnet generator winding, makes permanent magnet generator winding itself have powerful anti-short circuit capability.
The utility model is achieved like this, a kind of two fractional-slot concentratred winding Short Circuit withstand permanent magnet generator, generator amature is permanent magnetic field, there are 20 magnetic poles, generator unit stator has 24 stator slots, it is characterized in that: the fractional-slot concentratred winding wherein laying two cover three-phase symmetricals, coil Jie Ju Zhuo is Y=1; Three-phase main winding is AX, BY, CZ, to be pitch be 1 two layer winding, three-phase assists winding to be ax, by, cz, to be pitch be 1 single layer winding, after each corresponding series connection of two cover windings, x, y, z are linked together, and do not draw, exit A, B, C are labeled as U respectively, V, W three-phase, phase three-wire three output AC electricity.
Further, the two fractional-slot concentratred winding Short Circuit withstand permanent magnet generator of described one, the main winding arranged in stator 24 grooves is two layer winding, and coil span is 1, and each coil-conductor phase place in 24 grooves is followed successively by: A8A1, Z1B1, Y1Y2, B2Z1, C1C2, Z2A2, X2X3, A3Y3, B3B4, Y4C3, Z3Z4, C4X4, A4A5, X5B5, Y5Y6, B6Z5, C5C6, Z6A6, X6X7, A7Y7, B7B8, Y8C7, Z7Z8, C8X8; U phase is AX winding, and AX is composed in series successively by A1X1, A2X2, A3X3, A4X4, A5X5, A6X6, A7X7, A8X8 eight coils; In like manner, V phase is BY winding, and be made up of B1Y1 to B8Y8 eight windings in series, W phase is CZ phase, is formed by C1Z1 to C8Z8 eight windings in series.
Further, the two fractional-slot concentratred winding Short Circuit withstand permanent magnet generator of described one, the auxiliary winding arranged in stator 24 grooves is single layer winding, and coil span is 1, and each coil-conductor phase place in 24 grooves is followed successively by: a
1, x
1, b
1, y
1, c
1, z
1; a
2, x
2, b
2, y
2, c
2, z
2; a
3, x
3, b
3, y
3, c
3, z
3; a
4, x
4, b
4, y
4, c
4, z
4; U phase is ax winding, and ax is by a
1x
1, a
2x
2, a
3x
3, a
4x
4four coils are in series successively; In like manner, V phase is by winding, and by is by b
1y
1to b
4y
4four coils are composed in series successively, and w phase is cz winding, and cz is by c
1z
1to c
4z
4four coils are composed in series successively.
Further, the two fractional-slot concentratred winding Short Circuit withstand permanent magnet generator of described one, all coils is all direct around on the stator teeth, and technique is simple, and end is short, without mutual inductance between two cover windings, wherein auxiliary winding is a kind of real impedance winding, and auxiliary winding has the distortion of suppression load current, improves band rectification quasi-nonlinear load capacity, improve the effect of Short Circuit withstand current capacity, thus significantly improve the fault-tolerant ability of permanent magnet generator and the reliability of electric power system.
Technique effect of the present utility model is: in a kind of permanent magnet generator stator 24 groove, threephase stator winding is made up of two fractional-slot concentratred winding, wherein main winding AX, BY, CX is the pitch of a set of 20 poles is the two layer winding of 1, wherein auxiliary winding ax, by, cz to be a set of pitch be also 1 single layer winding, all windings are all directly around on the stator teeth, technique is simple, end is short, without mutual inductance between double winding, during wiring work, auxiliary winding serves and suppresses load current distortion effect, improve band rectification quasi-nonlinear load capacity, and there is strong Short Circuit withstand current capacity, significantly improve the fault-tolerant ability of permanent magnet generator and the reliability of electric power system, reach the object of invention.
Accompanying drawing explanation
Fig. 1 is electrical schematic diagram of the present utility model.
Embodiment
The utility model comes work and enforcement like this, a kind of two fractional-slot concentratred winding Short Circuit withstand permanent magnet generator, and main structure parameters is number of stator slots 24 groove, number of poles 20 pole, the number of phases 3 phase, rotor permanent magnet body structure; It is characterized in that: only design stator winding structure, stator winding design is become two fractional-slot concentratred winding, also becomes the fractional-slot concentratred winding of two cover three-phase symmetricals by stator winding design, the pitch of each coil of this two cover three-phase symmetric winding is Y=1.
Wherein a set of three-phase symmetric winding is that generating winding is also main winding, main winding three-phase has 24 coils, and each coil is direct around on each tooth of stator respectively, therefore in each groove, is furnished with 2 conductors, two layer winding, in the PHASE DISTRIBUTION of 24 groove coil conductors as following table defined:
By A1X1, A2X2, A3X3, A4X4, A5X5, A6X6, A7X7, A8X8, these 8 coils are together in series successively, mark A and X respectively end to end, form AX winding, are called U phase main winding; In like manner, these 8 coils of B1Y1 to B8Y8 are together in series successively, mark B and Y respectively end to end, form BY winding, be called V phase main winding, these 8 coils of C1Z1 to C8Z8 are together in series successively, mark C and Z respectively end to end, form CZ winding, be called W phase main winding.
The double-deck main winding pitch of this three-phase is Y=1, and be fractional-slot concentratred winding, technique is simple, each coil is directly respectively around on each tooth, and end is short, and draws its fundamental wave winding coefficient Kdp1=0.933 by distribution phase, fundamental wave winding coefficient is higher, and harmonic content is less simultaneously.
A set of three-phase symmetric winding is auxiliary winding in addition, auxiliary winding only has 12 coils, and each coil is mutually every a tooth, but each coil is also directly around on a tooth, therefore only have a conductor in each groove, like this in the PHASE DISTRIBUTION of the conductor of 24 groove coils as following table:
4 coil: a in showing
1x
1, a
2x
2, a
3x
3, a
4x
4be together in series, mark ax respectively end to end, be called that u phase assists winding; By b
1y
1, b
2y
2, b
3y
3, b
4y
4be together in series, mark by respectively end to end, be called that v phase assists winding; By c
1z
1, c
2z
2, c
3z
3, c
4z
4be together in series, mark cz respectively end to end, be called that w phase assists winding; Phase place is arranged and is made the winding coefficient kdp1=0 of auxiliary winding thus, also namely magnetic field of permanent magnet cutting auxiliary winding time, in each auxiliary winding mutually induced potential and be zero, therefore auxiliary winding only plays hindrance function.
This three-phase single-layer auxiliary winding coil pitch is also y=1, is also fractional-slot concentratred winding, therefore this two covers three-phase windings that this permanent magnet generator stator is arranged is called two fractional-slot concentratred winding.Stator winding, according to Fig. 1 connection, after namely three-phase assists each phase winding of winding each phase winding corresponding with three-phase main winding to be in series, is connected into star phase three-wire three and exports, as shown in Figure 1, AX and ax connects, and BY and by connects, by x after CZ and cz series connection, y, z end is linked together, and does not draw; Drawn by A, B, C end, mark U respectively, V, W form three-phase U, V, W tri-AC power of exporting of line.
Claims (4)
1. a two fractional-slot concentratred winding Short Circuit withstand permanent magnet generator, generator amature is permanent magnetic field, has 20 magnetic poles, and generator unit stator has 24 stator slots, it is characterized in that: the fractional-slot concentratred winding laying two cover three-phase symmetricals, and coil joint is Y=1 apart from Zhuo; Three-phase main winding is AX, BY, CZ, to be pitch be 1 two layer winding, three-phase assists winding to be ax, by, cz, to be pitch be 1 single layer winding, after each corresponding series connection of two cover windings, x, y, z are linked together, and do not draw, exit A, B, C are labeled as U respectively, V, W three-phase, phase three-wire three output AC electricity.
2. a kind of two fractional-slot concentratred winding Short Circuit withstand permanent magnet generator as claimed in claim 1, it is characterized in that: the main winding arranged in stator 24 grooves is two layer winding, and coil span is 1, each coil-conductor phase place in 24 grooves is followed successively by: A8A1, Z1B1, Y1Y2, B2Z1, C1C2, Z2A2, X2X3, A3Y3, B3B4, Y4C3, Z3Z4, C4X4, A4A5, X5B5, Y5Y6, B6Z5, C5C6, Z6A6, X6X7, A7Y7, B7B8, Y8C7, Z7Z8, C8X8;
Described U phase is AX winding, and AX is composed in series successively by A1X1, A2X2, A3X3, A4X4, A5X5, A6X6, A7X7, A8X8 eight coils;
Described V phase is BY winding, and be made up of B1Y1 to B8Y8 eight windings in series, W phase is CZ phase, is formed by C1Z1 to C8Z8 eight windings in series.
3. a kind of two fractional-slot concentratred winding Short Circuit withstand permanent magnet generator as claimed in claim 1, it is characterized in that: the auxiliary winding arranged in stator 24 grooves is single layer winding, and coil span is 1, each coil-conductor phase place in 24 grooves is followed successively by: a
1, x
1, b
1, y
1, c
1, z
1; a
2, x
2, b
2, y
2, c
2, z
2; a
3, x
3, b
3, y
3, c
3, z
3; a
4, x
4, b
4, y
4, c
4, z
4;
Described u phase is ax winding, and ax is by a
1x
1, a
2x
2, a
3x
3, a
4x
4four coils are in series successively;
Described V phase is by winding, and by is by b
1y
1to b
4y
4four coils are composed in series successively, and w phase is cz winding, and cz is by c
1z
1to c
4z
4four coils are composed in series successively.
4. a kind of two fractional-slot concentratred winding Short Circuit withstand permanent magnet generator as claimed in claim 1, is characterized in that: all coils is all direct around on the stator teeth, and wherein auxiliary winding is a kind of real impedance winding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420819585.5U CN204334268U (en) | 2014-12-23 | 2014-12-23 | A kind of two fractional-slot concentratred winding Short Circuit withstand permanent magnet generator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420819585.5U CN204334268U (en) | 2014-12-23 | 2014-12-23 | A kind of two fractional-slot concentratred winding Short Circuit withstand permanent magnet generator |
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| Publication Number | Publication Date |
|---|---|
| CN204334268U true CN204334268U (en) | 2015-05-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420819585.5U Expired - Fee Related CN204334268U (en) | 2014-12-23 | 2014-12-23 | A kind of two fractional-slot concentratred winding Short Circuit withstand permanent magnet generator |
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| Country | Link |
|---|---|
| CN (1) | CN204334268U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104506006A (en) * | 2014-12-23 | 2015-04-08 | 泰豪科技股份有限公司 | Short-circuit-resistant permanent magnet generator with double fractional-slot concentrated windings |
| WO2018096238A1 (en) | 2016-11-25 | 2018-05-31 | Renault Sas | Method for triggering a controlled short circuit mode for protecting an electrical machine and corresponding protection device |
-
2014
- 2014-12-23 CN CN201420819585.5U patent/CN204334268U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104506006A (en) * | 2014-12-23 | 2015-04-08 | 泰豪科技股份有限公司 | Short-circuit-resistant permanent magnet generator with double fractional-slot concentrated windings |
| CN104506006B (en) * | 2014-12-23 | 2018-02-23 | 泰豪科技股份有限公司 | A kind of double fractional-slot concentratred winding resistance to shorting magnetoes |
| WO2018096238A1 (en) | 2016-11-25 | 2018-05-31 | Renault Sas | Method for triggering a controlled short circuit mode for protecting an electrical machine and corresponding protection device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150513 Termination date: 20181223 |