CN101022229A - Stator winding end partial unit connecting method - Google Patents
Stator winding end partial unit connecting method Download PDFInfo
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- CN101022229A CN101022229A CN 200710021087 CN200710021087A CN101022229A CN 101022229 A CN101022229 A CN 101022229A CN 200710021087 CN200710021087 CN 200710021087 CN 200710021087 A CN200710021087 A CN 200710021087A CN 101022229 A CN101022229 A CN 101022229A
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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, unshakable in one's determination the going up in the equally distributed groove of line rod embedding 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 two line rods up and down of insulation each other, 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 design of Windings, need conductor is divided into the strand of some mutually insulateds along stator groove depth direction, to reduce the eddy current loss that leakage field causes 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, wherein have transposition form to obtain the effect of offsetting fully, but its process complexity and to the requirement of structure makes it all not used conscientiously on every unit the end stray field in the end.The present invention can improve the influence of brow leakage field to 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 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 technology.
Technical scheme of the present invention is: stator winding end partial unit connecting method, stator winding is double-deck 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 big groups and insulated from each other at least, big group of top bar A, B with A, the B of the corresponding lower bar that is connected be connected respectively for big group, 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 groups greatly, promptly A, B two organizes greatly, N=A+B, one of them is an odd number to the group number that A and B organize at least.Two of top bar big groups and pairing lower bar two big groups be connected by the numbering correspondence respectively.
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 mode with the winding grouping, change the locus of winding strand in the end, the path that makes the winding strand pass through in a utmost point is organized mutually is tending towards identical, respond to identical electromotive force as far as possible, greatly weaken the possible factor that circulation produces, reduce of the influence of brow leakage field effectively to 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 the insulation life of line rod better.
Description of drawings
Fig. 1 is applied to a kind of enforcement schematic diagram that utmost point of 42 groove stators is organized leading-out terminal mutually for the present invention.
Fig. 2 is applied to a kind of enforcement schematic diagram that utmost point of 42 groove stators is organized non-leading-out terminal mutually for the present invention.
A kind of connection diagram of layer line rod about when Fig. 3 is applied to 42 groove stators for the present invention.
Fig. 4 is applied to a kind of enforcement schematic diagram that utmost point of 48 groove stators is organized leading-out terminal mutually for the present invention.
Fig. 5 is applied to a kind of enforcement schematic diagram that utmost point of 48 groove stators is organized non-leading-out terminal mutually for the present invention.
A kind of connection diagram of layer line rod about when Fig. 6 is applied to 48 groove stators for the present invention.
Fig. 7 is applied to a kind of enforcement schematic diagram that utmost point of 54 groove stators is organized leading-out terminal mutually for the present invention.
Fig. 8 is applied to a kind of enforcement schematic diagram that utmost point of 54 groove stators is organized non-leading-out terminal mutually for the present invention.
A kind of connection diagram of layer line rod about when Fig. 9 is applied to 54 groove stators for the present invention.
Figure 10 is applied to a kind of enforcement schematic diagram that utmost point of 60 groove stators is organized leading-out terminal mutually for the present invention.
Figure 11 is applied to a kind of enforcement schematic diagram that utmost point of 60 groove stators is organized non-leading-out terminal mutually for the present invention.
A kind of connection diagram of layer line rod about when Figure 12 is applied to 60 groove stators for the present invention.
Figure 13 is applied to a kind of enforcement schematic diagram that utmost point of 66 groove stators is organized leading-out terminal mutually for the present invention.
Figure 14 is applied to a kind of enforcement schematic diagram that utmost point of 66 groove stators is organized non-leading-out terminal mutually for the present invention.
A kind of connection diagram of layer line rod about when Figure 15 is applied to 66 groove stators for the present invention.
Figure 16 is applied to a kind of enforcement schematic diagram that utmost point of 72 groove stators is organized leading-out terminal mutually for the present invention.
Figure 17 is applied to a kind of enforcement schematic diagram that utmost point of 72 groove stators is organized non-leading-out terminal mutually for the present invention.
A kind of connection diagram of layer line rod about when Figure 18 is applied to 72 groove stators for the present invention.
Figure 19 is divided into two groups that the space interlocks for the link position of N group braided wire of the present invention.
Embodiment
With 48 groove stators is example, and 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 lead evenly is divided into 8 groups up and down, between group and the group insulating barrier is arranged.As Fig. 4, shown in Figure 5, top bar is represented on top, and lower bar is represented in the bottom, one of them file represent a stator slot a layer line rod be divided into 8 groups, laterally promptly be 8 grooves that a utmost point is organized mutually, numbering 8 groups telling of expression respectively in the table.A file of last table is connected mutually with the following table same column.The last 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 following 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 a top bar, and the bottom is a lower bar, and A, B group is corresponding to link to each other, and two groups connection spatially constitutes staggered up and down.Each line rod all 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, as the group among Fig. 4, Fig. 51, be tending towards identical with regard to the path that makes winding conducting wire in a utmost point is organized mutually, pass through like this, 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, make degree reduction, the temperature of stator bar heating be 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 been represented the embodiment of six groove numbers commonly used of 42,48,54,60,66,72 grooves respectively, and the embodiment of other groove number is drawn analogous conclusions.
Big 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.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 when dividing big group, preferred 3 groups/7 groups packet mode.
The present invention can be used in winding bar leading-out terminal or non-leading-out terminal separately, 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 N group by this with the winding bar lead, and N group compiled and organized greatly for A, B two, and one of them is an odd number to the group number of A and B group at least, the corresponding connection, as shown in figure 19.
Claims (10)
1, stator winding end partial unit connecting method, stator winding is double-deck 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 that it is characterized in that the line rod is divided into A, B two big groups and insulated from each other at least, and A, the B of the lower bar that big group of the A of top bar, B are connected with the institute correspondence are connected respectively for big group.
2, stator winding end partial unit connecting method according to claim 1, it is characterized in that line rod strand one or both ends evenly are divided into the N group, N equals 1/6 of the total groove number of stator, insulated from each other between the N group, the N group difference correspondence of the corresponding lower bar that is connected of N group and institute of described top bar is connected.
3, stator winding end partial unit connecting method according to claim 2 is characterized in that line N that stick end divides group is further divided into two groups greatly, promptly is divided into big group of A and B, N=A+B, top bar and pairing lower bar corresponding respectively connections of two big groups.
4, stator winding end partial unit connecting method according to claim 1 is characterized in that the strand number does not wait in A, the B group.
5,, it is characterized in that the end grouping of line rod leading-out terminal or non-leading-out terminal connects according to claim 1 or 2 or 3 described stator winding end partial unit connecting methods.
6,, it is characterized in that line rod leading-out terminal or non-leading-out terminal two ends all divide into groups to connect according to claim 1 or 2 or 3 described stator winding end partial unit connecting methods.
7,, it is characterized in that the link position of line rod strand is divided into two groups that the space interlocks according to claim 1 or 2 or 3 described stator winding end partial unit connecting methods.
8, stator winding end partial unit connecting method according to claim 3, the group number that it is characterized in that A and B group at least one of them for odd number.
9, stator winding end partial unit connecting method according to claim 3 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.
10, according to claim 3 described stator winding end partial unit connecting methods, it is characterized in that every line stick end of 60 groove stators evenly is divided into 10 groups, wherein compile group for 3 groups for A, compile group for 7 groups for B.
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 |
Applications Claiming Priority (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 |
Publications (2)
| Publication Number | Publication Date |
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| CN101022229A true CN101022229A (en) | 2007-08-22 |
| CN101022229B CN101022229B (en) | 2013-01-02 |
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| Application Number | Title | Priority Date | Filing Date |
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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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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102480173A (en) * | 2010-11-25 | 2012-05-30 | 沈阳工业大学 | Method and device for inhibiting eddy current of shield housings of shielded motor |
| CN105048679A (en) * | 2015-09-15 | 2015-11-11 | 哈尔滨理工大学 | Large-sized alternating-current motor local and global hybrid transposition stator coil bar and hybrid transposition method |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1022599C (en) * | 1989-11-06 | 1993-10-27 | 中国科学院新疆物理研究所 | New transposition connection of AC motor stator ring type coil |
| US5231324A (en) * | 1990-07-19 | 1993-07-27 | Kabushiki Kaisha Toshiba | Three-phase armature winding |
| DE4322269A1 (en) * | 1993-07-05 | 1995-01-12 | Abb Management Ag | Device for holding the winding ends of a stator winding in a dynamoelectric machine |
| CN1057878C (en) * | 1995-01-01 | 2000-10-25 | 林哲民 | Coil-inserting method for three-phase ac winding |
| JP4421018B2 (en) * | 1999-07-26 | 2010-02-24 | 本田技研工業株式会社 | Slotless stator winding and manufacturing method thereof |
| DE10033014A1 (en) * | 2000-07-06 | 2002-01-17 | Abb Alstom Power Nv | Stator winding for an electrical machine |
-
2007
- 2007-03-27 CN CN 200710021087 patent/CN101022229B/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102480173A (en) * | 2010-11-25 | 2012-05-30 | 沈阳工业大学 | Method and device for inhibiting eddy current of shield housings of shielded motor |
| CN105048679A (en) * | 2015-09-15 | 2015-11-11 | 哈尔滨理工大学 | Large-sized alternating-current motor local and global hybrid transposition stator coil bar and hybrid transposition method |
| 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 |
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| Publication number | Publication date |
|---|---|
| CN101022229B (en) | 2013-01-02 |
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