CN101022229B - Stator winding end partial unit connecting method - Google Patents
Stator winding end partial unit connecting method Download PDFInfo
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- CN101022229B CN101022229B CN 200710021087 CN200710021087A CN101022229B CN 101022229 B CN101022229 B CN 101022229B CN 200710021087 CN200710021087 CN 200710021087 CN 200710021087 A CN200710021087 A CN 200710021087A CN 101022229 B CN101022229 B CN 101022229B
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- 238000004804 winding Methods 0.000 title claims abstract description 28
- 238000000034 method Methods 0.000 title claims abstract description 11
- 238000010586 diagram Methods 0.000 description 20
- 230000017105 transposition Effects 0.000 description 7
- 239000004020 conductor Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000009413 insulation Methods 0.000 description 3
- 230000002500 effect on skin Effects 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009954 braiding Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
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- Insulation, Fastening Of Motor, Generator Windings (AREA)
Abstract
This invention relates to a grouping connection method for stator winding end part, in which, the stator winding is divided into a double-layer three-phase structure of wiring harness for the bars, the top and bottom bars are connected orderly to form 6 coils corresponding to the three-phase, one end of the bar or the strands at both ends are divided into A, B two big groups insulated to each other, the A, B big groups of the upper bar are connected with the A, B big groups of the lower bar and the strands in the A, B groups are not equal, which uses the mode of grouping a winding to alter positions of winding strands at the end to let the strands pass through approximately the same paths in a pole phase group to induce the same potential and weaken generation of circulating current greatly and reduce the influence of end leakage magnetic field to the winding effectively.
Description
Technical field
The invention belongs to the alternating current machine field, the end that is specifically related to high power turbine generator unit stator winding connects.
Background technology
With regard to powerful threephase generator, its rated current reaches thousands of even tens thousand of amperes, what its stator winding finally formed is six " greatly " coil groups, is used for induction and forms three pairs of six electromotive forces, the excellent embedding in the equally distributed groove unshakable in one's determination of line that stator winding is formed by the bunchy strand; General large and middle size motor all adopts two layer winding, be that stator slot is embedded in each other up and down two line rods of insulation, every line rod is connected to form coil groups according to the order of sequence at the stator two ends, each " greatly " coil groups is evenly distributed in the stator circumference groove levels, only stays end to end two ends as the output of generator.
Skin effect is the effect that the alternating current in the conductor increases in convergence conductive surface place current density, because the existence of skin effect, when the generator unit stator Winding Design, need conductor is divided into the strand of some mutually insulateds, the eddy current loss that causes to reduce leakage field along stator groove depth direction in conductor; In order to make the identical electromotive force of strand induction of diverse location, the supplementary load loss that the circulating current between the strand that the minimizing stray field causes produces also need weave transposition to strand simultaneously.The braiding transposition has several different methods, and have at slot part and carry out 360 ° or 540 ° of transpositions, and do not replace in the end; Or after slot part carries out 360 ° or 540 ° of transpositions, also carry out 90 ° or 180 ° transpositions in the end; Carry out 540 °+void transposition at slot part in addition, and do not replace in the end, wherein have transposition form to obtain the effect of offsetting fully to the end stray field, but its process complexity and to the requirement of structure, so that it can not all be used on every unit conscientiously.The present invention can improve the brow leakage field to the impact of winding by comparatively simple method, obtains comparatively desirable effect.
Summary of the invention
The present invention seeks to: a kind of stator winding end connected mode is provided, the supplementary load loss that circulating current produces between the strand that the eddy current loss that the minimizing leakage field causes in conductor and stray field cause, and also the connection of the line of stator rod is easy to realize on the technique.
Technical scheme of the present invention is: stator winding end partial unit connecting method, stator winding is the double-layer three-phase structure, the line rod is the strand bundle, the layer line rod link to each other to form 6 coils of corresponding three-phase according to the order of sequence up and down, end, the one or both ends strand of line rod is divided into A, B two large groups and insulated from each other at least, large group of top bar A, B with large group of A, the B of the corresponding lower bar that is connected connect respectively, the strand number does not wait in A, the B group.
Line rod strand one or both ends evenly are divided into the N group, and N equals 1/6 of the total groove number of stator, and is insulated from each other between the N group, and N group correspondence was joined when the line rod connected.Divide N group to compile to be two large groups, namely A, B two organizes greatly, N=A+B, one of them is odd number to the group number that A and B organize at least.Two of top bar large groups and be connected lower bar the respectively by number corresponding connection of two large groups.
The present invention is applied to line rod leading-out terminal and non-leading-out terminal, can end grouping connect, and the other end does not divide into groups to connect; Perhaps line rod two ends are all divided into groups to connect.
The invention has the beneficial effects as follows: be convenient to realize, by the mode with the winding grouping, change the winding strand in the locus of end, so that the path that the winding strand passes through in a utmost point is organized mutually is tending towards identical, respond to as far as possible identical electromotive force, greatly weaken the possible factor that circulation produces, effectively reduce the brow leakage field to the impact of winding, reach the purpose that reduces supplementary load loss, improves generator efficiency, the reduction of stator bar the degree of heat, temperature are tending towards evenly, have guaranteed better the insulation life of line rod.
Description of drawings
Fig. 1 is that the present invention is applied to a kind of enforcement schematic diagram that utmost point of 42 groove stators is organized leading-out terminal mutually.
Fig. 2 is that the present invention is applied to a kind of enforcement schematic diagram that utmost point of 42 groove stators is organized non-leading-out terminal mutually.
Fig. 3 is the present invention's a kind of connection diagram of layer line rod up and down when being applied to 42 groove stator.
Fig. 4 is that the present invention is applied to a kind of enforcement schematic diagram that utmost point of 48 groove stators is organized leading-out terminal mutually.
Fig. 5 is that the present invention is applied to a kind of enforcement schematic diagram that utmost point of 48 groove stators is organized non-leading-out terminal mutually.
Fig. 6 is the present invention's a kind of connection diagram of layer line rod up and down when being applied to 48 groove stator.
Fig. 7 is that the present invention is applied to a kind of enforcement schematic diagram that utmost point of 54 groove stators is organized leading-out terminal mutually.
Fig. 8 is that the present invention is applied to a kind of enforcement schematic diagram that utmost point of 54 groove stators is organized non-leading-out terminal mutually.
Fig. 9 is the present invention's a kind of connection diagram of layer line rod up and down when being applied to 54 groove stator.
Figure 10 is that the present invention is applied to a kind of enforcement schematic diagram that utmost point of 60 groove stators is organized leading-out terminal mutually.
Figure 11 is that the present invention is applied to a kind of enforcement schematic diagram that utmost point of 60 groove stators is organized non-leading-out terminal mutually.
Figure 12 is the present invention's a kind of connection diagram of layer line rod up and down when being applied to 60 groove stator.
Figure 13 is that the present invention is applied to a kind of enforcement schematic diagram that utmost point of 66 groove stators is organized leading-out terminal mutually.
Figure 14 is that the present invention is applied to a kind of enforcement schematic diagram that utmost point of 66 groove stators is organized non-leading-out terminal mutually.
Figure 15 is the present invention's a kind of connection diagram of layer line rod up and down when being applied to 66 groove stator.
Figure 16 is that the present invention is applied to a kind of enforcement schematic diagram that utmost point of 72 groove stators is organized leading-out terminal mutually.
Figure 17 is that the present invention is applied to a kind of enforcement schematic diagram that utmost point of 72 groove stators is organized non-leading-out terminal mutually.
Figure 18 is the present invention's a kind of connection diagram of layer line rod up and down when being applied to 72 groove stator.
Figure 19 is two groups that the link position of N group braided wire of the present invention is divided into spatial intersecting.
Embodiment
Take 48 groove stators as example, Fig. 4-6 is seen in the connection between the line rod, and the groove number of its every extremely every phase is 8, and layer line stick end wire evenly is divided into 8 groups up and down, between group and the group insulating barrier is arranged.Such as Fig. 4, shown in Figure 5, top represents top bar, and the bottom represents lower bar, one of them file represent a stator slot a layer line rod be divided into 8 groups, laterally namely be 8 grooves that a utmost point is organized mutually, numbering 8 groups telling of expression respectively in the table.A file of upper table is connected mutually with the following table same column.The upper 3 groups of volumes that upper and lower layer line rod are in same position are organized for A, number identical group correspondence and join; The identical lower 5 groups of volumes in upper and lower layer line rod position are the B group, and correspondence is joined, and also will insulate between A, the B group.Fig. 6 is the total connection diagram of line rod in the groove, and its middle and upper part is top bar, and the bottom is lower bar, and A, B group is corresponding to link to each other, and two groups connection spatially consists of staggered up and down.Each line rod joins like this, through a utmost point phase, each group of 8 groups all will evenly be passed through each locus in the line rod by rule, such as the group 1 among Fig. 4, Fig. 5, so just so that the path that winding conducting wire passes through in a utmost point is organized mutually is tending towards identical, also just suppressed to produce the possibility of circulation, reduced the Different Effects of brow leakage field to each grouping, thereby supplementary load loss have been reduced, so that the degree of stator bar heating reduces, temperature is tending towards even, not only improve the efficient of generator, but also prolonged the insulation life of line rod.
The stator execution mode of other groove number is identical with aforementioned 48 groove stators, and Fig. 1～18 have represented respectively the embodiment of six groove numbers commonly used of 42,48,54,60,66,72 grooves, and the embodiment of other groove number is drawn analogous conclusions.
The large component group of the A of listed schematic diagram, B and not exclusive packet mode, one of them gets final product for odd number the group number of A and B group at least.Such as 8 groups of above-mentioned 48 groove stators, also can 1 group of volume be the A group, compiling for 7 groups is the B group, preferred 3 groups/5 groups packet mode; 60 groove stators evenly are divided into 10 groups for another example, can adopt the packet mode of 3 groups/7 groups or 1 group/9 groups during minute large group, preferred 3 groups/7 groups packet mode.
The present invention can be used in separately winding bar leading-out terminal or non-leading-out terminal, also can use simultaneously at online excellent two ends.1/6 groove that is every extremely every phase of total groove number is counted N, evenly divides the N group by this with the winding bar wire, and N group compiled and organized greatly for A, B two, and one of them is odd number to the group number of A and B group at least, the corresponding connection, as shown in figure 19.
Claims (3)
1. stator winding end partial unit connecting method, stator winding is the double-layer three-phase structure, the line rod is the strand bundle, the layer line rod link to each other to form 6 coils of corresponding three-phase according to the order of sequence up and down, the line rod strand that it is characterized in that stator winding leading-out terminal or non-leading-out terminal evenly is divided into N group, N equals 1/6 of the total groove number of stator, insulated from each other between N group's group, line N that stick end divides group is further divided into A, B two organizes greatly, A, B two large groups are insulated from each other, the A of top bar, large group of B with the A of the corresponding lower bar that is connected, large group of B is connected respectively, the link position of line rod strand is divided into two groups of spatial intersecting, A, large group of interior strand number of B do not wait, and A, at least one of them is odd number to group's number that B is large group, the N of a described top bar group with N group of the corresponding lower bar that is connected be connected respectively.
2. stator winding end partial unit connecting method according to claim 1 is characterized in that every line stick end of 48 groove stators evenly is divided into 8 groups, compiles the group for A for wherein 3 groups, compiles the group for B for 5 groups.
3. according to claim 1 described stator winding end partial unit connecting method, it is characterized in that every line stick end of 60 groove stators evenly is divided into 10 groups, wherein compile the group for A for 3 groups, compile the group for B for 7 groups.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710021087 CN101022229B (en) | 2007-03-27 | 2007-03-27 | Stator winding end partial unit connecting method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710021087 CN101022229B (en) | 2007-03-27 | 2007-03-27 | Stator winding end partial unit connecting method |
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| CN101022229A CN101022229A (en) | 2007-08-22 |
| CN101022229B true CN101022229B (en) | 2013-01-02 |
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| CN 200710021087 Active CN101022229B (en) | 2007-03-27 | 2007-03-27 | Stator winding end partial unit connecting method |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102480173B (en) * | 2010-11-25 | 2013-11-06 | 沈阳工业大学 | Method and device for inhibiting eddy current of shield housings of shielded motor |
| CN105048679B (en) * | 2015-09-15 | 2018-01-16 | 哈尔滨理工大学 | A kind of large ac machines are local to mix transposition stator bar and mixing interchanging method with overall |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1051642A (en) * | 1989-11-06 | 1991-05-22 | 中国科学院新疆物理研究所 | The alternating current machine stator coil type coil newly change connection |
| US5231324A (en) * | 1990-07-19 | 1993-07-27 | Kabushiki Kaisha Toshiba | Three-phase armature winding |
| CN1102516A (en) * | 1993-07-05 | 1995-05-10 | Abb管理有限公司 | Device for holding the ends of the turns of a stator winding in a dynamoelectric machine |
| CN1113359A (en) * | 1995-01-01 | 1995-12-13 | 林哲民 | Coil-inserting method for three-phase ac winding |
| CN1333590A (en) * | 2000-07-06 | 2002-01-30 | 阿尔斯托姆电力有限公司 | Stator winding for motor |
| US6791224B1 (en) * | 1999-07-26 | 2004-09-14 | Honda Giken Kogyo Kabushiki Kaisha | Stator winding and manufacturing method therefor |
-
2007
- 2007-03-27 CN CN 200710021087 patent/CN101022229B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1051642A (en) * | 1989-11-06 | 1991-05-22 | 中国科学院新疆物理研究所 | The alternating current machine stator coil type coil newly change connection |
| US5231324A (en) * | 1990-07-19 | 1993-07-27 | Kabushiki Kaisha Toshiba | Three-phase armature winding |
| CN1102516A (en) * | 1993-07-05 | 1995-05-10 | Abb管理有限公司 | Device for holding the ends of the turns of a stator winding in a dynamoelectric machine |
| CN1113359A (en) * | 1995-01-01 | 1995-12-13 | 林哲民 | Coil-inserting method for three-phase ac winding |
| US6791224B1 (en) * | 1999-07-26 | 2004-09-14 | Honda Giken Kogyo Kabushiki Kaisha | Stator winding and manufacturing method therefor |
| CN1333590A (en) * | 2000-07-06 | 2002-01-30 | 阿尔斯托姆电力有限公司 | Stator winding for motor |
Non-Patent Citations (6)
| Title |
|---|
| 余恪三.水轮发电机定子股线环流的分析研究.水电站机电技术 2.1994,(2),1-5. |
| 余恪三.水轮发电机定子股线环流的分析研究.水电站机电技术 2.1994,(2),1-5. * |
| 宋文谦，蒋同海，张日强，张汉英.大型交流电机定子线圈的新换位联接.大电机技术 5.1986,(5),5-9. |
| 宋文谦,蒋同海,张日强,张汉英.大型交流电机定子线圈的新换位联接.大电机技术 5.1986,(5),5-9. * |
| 张日强.大型交流电机定子线棒翻转交叉换位连接的分析.大电机技术 5.1991,(5),18-20. |
| 张日强.大型交流电机定子线棒翻转交叉换位连接的分析.大电机技术 5.1991,(5),18-20. * |
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| CN101022229A (en) | 2007-08-22 |
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