CN105740584A - Alternating current motor branch asymmetric winding connection optimization design method and branch asymmetric winding connection scheme - Google Patents

Abstract

The invention discloses an alternating current motor branch asymmetric winding connection optimization design method and a branch asymmetric winding connection scheme.The method comprises the steps that combined with a traditional asymmetric winding research method, a winding arrangement scheme with a small amplitude asymmetry degree and a small phase difference is selected, corresponding winding connection cell charts are converted into winding connection directed graphs, a directed path is selected from the corresponding winding connection directed graphs in an optimized mode, and thus a branch asymmetric winding connection scheme is optimized.By means of the method, the winding connection scheme with a small asymmetric degree and tidy end wiring can be obtained, the circulating current loss between branches is reduced, and materials are saved; besides, tidiness of end wiring can be ensured, winding end fixing strength can be improved, and the running efficiency and stability of a generator set can be ensured; meanwhile, in the optimizing process, a large quantity of useless schemes can be automatically filtered out, the precision and efficiency of branch asymmetric winding design are greatly improved, and high practicability is achieved.

Description

Alternating current generator asymmetric-branches winding connects Optimization Design and asymmetric-branches winding connection scheme

Technical field

The present invention relates to Stator Windings of AC Motor design field, be specifically related to a kind of alternating current generator asymmetric-branches winding and connect Optimization Design and the asymmetric-branches winding connection scheme obtained by the method.

Background technology

Asymmetric-branches winding is a kind of unconventional symmetric winding.Large ac machines stator winding adopts asymmetric-branches design can effectively reduce the operating current of groove inner wire, reduces winding loss and temperature rise, reduces electromagnetic force suffered by bar, improve motor performance, improves the stability that motor runs.

In the design process of asymmetric-branches winding, except meet electric potential of branch amplitude degree of asymmetry and maximum phase difference little as far as possible except, the quality of winding overhang wiring is also an important basis for estimation.Complicated winding connection is difficult in technique, and long winding cross-line can cause the waste of material, strengthen the difficulty that winding overhang is fixing, and is subject to the vibration that electric power causes with other factors, affects motor reliability of operation；For asymmetric-branches winding connection scheme, existing method for designing depends on the personal experience of designer, it does not have unified method for designing, there is a large amount of useless scheme, and design accuracy is relatively low；And, it is impossible to ensure that gained design asymmetric-branches degree is little and end connection is clean and tidy, it is difficult to design the winding connection scheme of optimum simultaneously.

Therefore, a kind of Optimization Design connected for asymmetric-branches winding is needed badly, to ensure that asymmetric-branches degree is little and end connection is clean and tidy, it is achieved alternating current generator asymmetric-branches winding connects the optimization of design.

Summary of the invention

For above-mentioned the deficiencies in the prior art, it is an object of the present invention to provide a kind of alternating current generator asymmetric-branches winding and connect Optimization Design, the method can obtain the coils arrangement scheme that asymmetric-branches degree is little and end connection is clean and tidy, circulation loss between branch road can not only be reduced, and the fixing intensity of winding overhang can be strengthened, thus ensure efficiency and stability that generating set runs.

It is a further object to provide a kind of branch road winding Unsymmetrical Winding connection scheme obtained by above-mentioned alternating current generator asymmetric-branches winding connection Optimization Design.

In order to reach foregoing invention purpose, the technical solution used in the present invention is:

A kind of alternating current generator asymmetric-branches winding end connection Optimization Design is provided, including:

According to Stator Windings of AC Motor basic parameter, adopt alternating current generator asymmetric-branches winding arrangement design method, filter out amplitude degree of asymmetry and all less coils arrangement scheme of phase contrast；

Extract a described coils arrangement scheme, and described coils arrangement scheme is stored with the form of bypass channel matrix number；

The bypass channel matrix number of described coils arrangement scheme and connection configuration grid figure are classified as according to often adjacent two that what go together in one big group, each big group is that the form of a group is grouped；

Respectively in units of each big group of the connection configuration grid figure of described coils arrangement scheme, convert described coils arrangement scheme connection configuration grid figure to corresponding directed graph；

According to the element numerical value in bypass channel matrix number, the active path that each group branch road winding selected in described directed graph in bypass channel matrix number in each big group connects；

The active path that all groups branch road winding in each big group connects is coordinated；

Being coordinated by the active path that branch road winding between each big group connects, the branch road winding completing a coils arrangement scheme connects again, it is achieved the optimization design of asymmetric-branches winding end connection.

According to Stator Windings of AC Motor basic parameter, adopt alternating current generator asymmetric-branches winding arrangement design method, filter out amplitude degree of asymmetry and all less coils arrangement scheme of phase contrast particularly as follows:

Winding connection configuration grid figure is determined according to Stator Windings of AC Motor basic parameter, further according in the number scope of the same phase groove vector comprised in total number of every branch road comprised groove vector, every branch road and each branch road same phase groove vector number and principle for number of pole-pairs, described winding connection configuration grid figure carries out the screening of branch road coils arrangement scheme；

Calculate the synthesis amplitude of electromotive force and the phase place of all branch road coils arrangement schemes filtered out, and according to described amplitude and phase place, filter out amplitude degree of asymmetry and all less coils arrangement scheme of phase contrast.

One coils arrangement scheme of described extraction, and described coils arrangement scheme is stored with the form of bypass channel matrix number；Particularly as follows:

The method that coils arrangement scheme is stored with the form of bypass channel matrix number for:

In bypass channel matrix number, every a line represents a branch road of coils arrangement scheme, each element in every a line represents the number of the same phase groove vector of the phase place that every branch road coils arrangement scheme comprises, and all elements sum of every a line is total number of the groove vector that every branch road coils arrangement scheme comprises.

The described bypass channel matrix number by described coils arrangement scheme and connection configuration grid figure be classified as according to often adjacent two one big group, each big group is gone together be the form of a group carry out being grouped particularly as follows:

First, the bypass channel matrix number of coils arrangement scheme is grouped, particularly as follows:

From the first row of bypass channel matrix number, two adjacent row are divided into one big group；In each big group, more same a line is divided into a group；

To be grouped according to the method identical with described bypass channel matrix number according to the connection configuration grid figure of Stator Windings of AC Motor basic parameter determined coils arrangement scheme again；Particularly as follows:

From the first row of connection configuration grid figure, two adjacent row are divided into one big group；In each big group, more same a line is divided into a group.

Described respectively in units of each big group of the connection configuration grid figure of described coils arrangement scheme, convert described coils arrangement scheme connection configuration grid figure to corresponding directed graph particularly as follows:

In each big group of connection configuration grid figure, each groove vector in grid figure corresponds to the summit in directed graph, and in grid figure, the quantity of each column groove vector is identical with the quantity on each column summit in directed graph；

Can not across the principle of pole wiring according to the groove vector in grid figure, the form adopting wave winding to connect, convert described coils arrangement scheme connection configuration grid figure to corresponding directed graph.

Described according to the element numerical value in bypass channel matrix number, active path that each group branch road winding of selecting in described directed graph in bypass channel matrix number in each big group connects particularly as follows:

(1) choosing any one summit in directed graph, as starting point, choose a limit labelling and start search, using the terminal of this edge connection as ground zero, one limit labelling of reselection also proceeds search and judges；

(2) the relatively more selected path first and second row sum on summit and size of corresponding element value in group in corresponding bypass channel matrix number in directed graph, according to judged result, the active path that each group branch road winding that retrieval is starting point with a summit connects；

(3) judge whether the limit being connected between any one starting point with minimum point in directed graph is all labeled；If being all labeled, then the active path being starting point with this summit all finds, and continues to start retrieval with next summit for starting point and judges, till in directed graph, all summits all complete the retrieval judgement of active path；Wherein, minimum point is two summits of the corresponding row that starting point subtracts 1 at a distance of corresponding bypass channel matrix number element sum.

Path selected by described comparison is the first and second row sum on summit and size of corresponding element value in group in corresponding bypass channel matrix number in directed graph, according to judged result, it is determined that searching route, particularly as follows:

If a. the number on Zhong Lianglie summit, path is respectively less than corresponding element value selected by branch road winding, then repeats step a continuation retrieval and go down；

If b. path selected by branch road winding having string number of vertices to exceed corresponding element value, erroneous path then occurs, and this last item limit, path of labelling is erroneous path, return to the initial vertex on the last item limit as new starting point, an other limit is selected to continue to judge, till finding two row number of vertices to be equal to corresponding bypass channel matrix number element value, find an active path；

If c. path selected by branch road winding having string number of vertices equal to corresponding element value, then judge the size of another row number of vertices and corresponding element value, and according to judged result, it is determined that searching route；Particularly as follows:

If c1. another row number of vertices is less than corresponding element value, then repeats step a and continue search for；

If c2. another row number of vertices is more than corresponding element value, erroneous path then occurs, and this last item limit, path of labelling is erroneous path, return to the initial vertex on the last item limit as new starting point, an other limit is selected to continue to judge, till finding two row number of vertices to be equal to corresponding bypass channel matrix number element value, find an active path；

If c3. another row number of vertices is equal to corresponding element value, then find active path, store summit and the limit of this path process, and first summit and tail summit；

Described undertaken coordinating by the active path that all groups branch road winding in each big group connects particularly as follows:

D. the summit corresponding to the active path of each group in big group of bypass channel matrix number is taken union；

E. judge that whether gained union is equal to the set on all summits in directed graph；

F. if equal to the set on all summits, storage coordinate active path that successful each branch road winding connects, and the first summit of active path and tail summit, until all active paths of each branch road coordinate complete in big group of place；

G. forward next big group to, repeat step e to step f, until each branch road active path coordinates complete in all big group.

Described undertaken coordinating by the active path that the branch road winding between each big group connects again particularly as follows:

H. the adjacent active path coordinating in two big group successful each branch road winding to connect is taken, it is judged that whether the tail summit of active path or the difference on head summit that in one big group, the first summit of the active path that branch road winding connects or tail summit connect with branch road winding in adjacent big group are 1；

If i. difference is 1, then completing the cooperation between big group, storage coordinates the active path that successfully between big group, branch road winding connects.

J. gradually take two next adjacent big group, repeat step h and step i；If all having, in each big group, the coordinated scheme satisfied condition, then the branch road winding between big group coordinates successfully, is met the coils arrangement scheme of requirement.

The invention have the benefit that the present invention combines tradition Unsymmetrical Winding research method, select amplitude degree of asymmetry and all less coils arrangement scheme of phase contrast, and the coils arrangement scheme selected is stored with bypass channel matrix number form, it is achieved that the matrix form of coils arrangement scheme represents；Bypass channel matrix number is classified as one big group according to adjacent two, in each big group, the principle of one group of behavior is grouped, corresponding winding connection side's trrellis diagram is grouped according to adjacent two principles being classified as a grid figure group, winding can be simplified connect, automatically filter a large amount of useless scheme, improve design accuracy；Above-mentioned grid figure group is converted to corresponding winding and connects directed graph group, group in select each branch road winding connect active path and between each group winding connection active path coordinate, finally give the asymmetric-branches winding connection scheme satisfied condition, it is possible to improve design efficiency.

The present invention can realize the optimization design that alternating current generator asymmetric-branches winding connects, it is possible to obtains the winding connection scheme that asymmetric-branches degree is little and end connection is clean and tidy；Gained scheme can reduce circulation loss between branch road, saves material, and can strengthen winding overhang and fix, it is ensured that efficiency that generating set runs and stability.Meanwhile, the present invention can filter a large amount of useless scheme automatically, substantially increases precision and the efficiency of asymmetric-branches winding design, has stronger practicality.

Accompanying drawing explanation

Fig. 1 is the flow chart that alternating current generator asymmetric-branches winding connects Optimization Design.

Fig. 2 is bypass channel matrix number schematic diagram.

Fig. 3 is bypass channel matrix number packet schematic diagram.

Fig. 4 is winding connection side's trrellis diagram packet schematic diagram that coils arrangement scheme is corresponding.

Fig. 5 is that grid figure group converts the schematic diagram on summit in winding connection directed graph group to.

Fig. 6 is the schematic diagram of the winding connection directed graph group adding connected mode in Fig. 5.

Fig. 7 is the flow chart of the active path system of selection that each group correspondence branch road winding connects.

Fig. 8 is the flow chart of the active path fitting method that each great Zu Neige group correspondence branch road winding connects.

Fig. 9 is the flow chart of the active path fitting method that corresponding winding connects between each big group.

Figure 10 is bypass channel matrix number schematic diagram in the embodiment of the present invention.

Figure 11 is bypass channel matrix number packet schematic diagram in the embodiment of the present invention.

Figure 12 is winding connection side's trrellis diagram of coils arrangement option A phase leukorrhagia in the embodiment of the present invention.

Figure 13 is winding connection side trrellis diagram packet schematic diagram in the embodiment of the present invention.

Figure 14 is that embodiment of the present invention medium square figure group converts the schematic diagram on summit in winding connection directed graph group to.

Figure 15 is that the winding adding connected mode in Figure 14 connects directed graph group.

Figure 16 is the active path retrieval schematic diagram that in the embodiment of the present invention, group's correspondence branch road winding connects.

Figure 17 is all active path schematic diagrams being starting point with a summit that in the embodiment of the present invention, group's correspondence branch road winding connects.

Figure 18 is that the active path that in the embodiment of the present invention, great Zu Neige group correspondence branch road winding connects coordinates schematic diagram.

Figure 19 is that the active path that in the embodiment of the present invention, between each big group, corresponding winding connects coordinates schematic diagram.

Detailed description of the invention

Below the specific embodiment of the present invention is described; so that those skilled in the art understand the present invention; it is to be understood that; the invention is not restricted to the scope of detailed description of the invention; to those skilled in the art; as long as various changes limit and in the spirit and scope of the present invention determined, these changes are apparent from, and all utilize the innovation and creation of present inventive concept all at the row of protection in appended claim.

An embodiment according to the application, is the flow chart that alternating current generator asymmetric-branches winding of the present invention connects Optimization Design referring to Fig. 1, Fig. 1；The method comprising the steps of S1 to S7, particularly as follows:

In step sl, according to Stator Windings of AC Motor basic parameter, select amplitude degree of asymmetry and all less coils arrangement scheme of phase contrast；

An embodiment according to the application, the number scope of same phase groove vector that the sum of every comprised groove vector of branch road, every branch road comprise is determined according to Stator Windings of AC Motor basic parameter, according to above-mentioned qualifications and each branch road same phase groove vector number and the principle that is number of pole-pairs, select the coils arrangement scheme satisfied condition；Calculate amplitude and the phase place of each branch road synthesis electromotive force of described coils arrangement scheme, and according to described amplitude and phase place, the amplitude degree of asymmetry and the maximum phase that calculate described coils arrangement scheme are poor, select amplitude degree of asymmetry and all less coils arrangement scheme of phase contrast.

An embodiment according to the application, every branch road comprised groove vector add up to total groove number by every groove number that every branch road average mark obtains mutually, be also each branch road sum of shared grid in grid figure；Succinct in order to ensure winding overhang wiring, each branch road string grid can not be taken or one unused, add 1 to number of pole-pairs deduct parallel branch number so the number of the same phase groove vector comprised in every branch road range for 1.

In step s 2, described coils arrangement scheme is stored with the form of bypass channel matrix number.

Referring to Fig. 2, coils arrangement scheme is stored with the form of bypass channel matrix number, particularly as follows:

In bypass channel matrix number, each row element represents the groove vector that in coils arrangement scheme, a branch road comprises, the groove vector of different lines element representation out of phase, the number of corresponding phase groove vector in the element representation branch road in matrix.

In step s3, being grouped according to adjacent two principles being classified as in big group, each big group one group of behavior by bypass channel matrix number, corresponding winding connection side's trrellis diagram is grouped according to adjacent two principles being classified as a grid figure group.

Referring to the packet schematic diagram that Fig. 3, Fig. 3 are bypass channel matrix number, from bypass channel matrix number first row, two adjacent row are divided into one big group；In each big group, then it is divided into a group by being about to the element of same a line, namely presses branch road packet, the number of the corresponding phase groove vector that each branch road of element representation in each group comprises；

Referring to Fig. 4, Fig. 4 is winding connection side's trrellis diagram packet schematic diagram that coils arrangement scheme is corresponding, winding connection side's trrellis diagram and bypass channel matrix number have identical columns, by big group of group technology of bypass channel matrix number, from the first row of winding connection side's trrellis diagram, adjacent two row are divided into a grid figure group.

Owing to there will be more useless scheme when winding entirety is directly connected to, adopt said method that bypass channel matrix number corresponding for each coils arrangement scheme and connection configuration grid figure are divided into some groups, first in group, carry out winding connection, again the scheme that each group connects is coordinated, a large amount of useless scheme can be effectively filtered out, substantially increase the precision of asymmetric-branches winding design, there is stronger practicality.

In step s 4, described grid figure group is converted corresponding winding to and connect directed graph group；

Referring to Fig. 5, Fig. 5 is that winding grid figure group converted to connects the schematic diagram on summit in directed graph group, in each grid figure group, groove number in grid figure corresponds to winding and connects the summit in directed graph group, and in grid figure, the number of each column groove vector is identical with the number on each column summit in winding connection directed graph group.

Connect across the principle of pole wiring, and wave winding type of attachment can not be adopted according to winding in grid figure, described each side trrellis diagram group is converted to corresponding winding and connects directed graph group.Owing to winding is longer across its connecting line of pole wiring, end connection is complicated, connects clean and tidy wave winding connection scheme to obtain end, does not allow appearance to connect across pole in design；For wave winding type of attachment, connecting in directed graph group at grid figure group correspondence winding and only exist three kinds of modes of connection, be connected as the connection of normal slot pitch straight down, bottom right is connected as the connection of a long slot pitch, and lower-left is connected as the connection of a short slot pitch；Therefore, each summit only has two limits, namely two kinds possible connected mode, and the winding adding connected mode connects directed graph group as shown in Figure 6.

After each row groove number is converted to the summit in corresponding winding connection directed graph group in grid figure group, by above-mentioned all possible connected mode, winding is connected each summit directed connection in directed graph group and get up to form winding connection directed graph group.

In step s 5, the element value according to bypass channel matrix number Zhong Ge group, connect at described corresponding winding and directed graph group is selected the active path that each group correspondence branch road winding connects, referring to Fig. 7, method particularly includes:

A. choosing any one summit in winding connection directed graph group, as starting point, choose a limit labelling and start retrieval, using the terminal of this edge connection as ground zero, one limit labelling of reselection also proceeds retrieval and judges；

B. relatively more selected path connects the first and second row sum on summit and size of corresponding element value in group in corresponding bypass channel matrix number in directed graph group through winding, according to judged result, retrieve the active path that the branch road winding that each group is starting point with a summit connects, particularly as follows:

If b1. the number on Zhong Lianglie summit, path is respectively less than corresponding element value selected by branch road winding, then repeats step a continuation retrieval and go down；

If b2. path selected by branch road winding having string number of vertices to exceed corresponding element value, erroneous path then occurs, and this last item limit, path of labelling is erroneous path, return to the initial vertex on the last item limit as new starting point, an other limit is selected to continue to judge, until retrieving active path, till namely finding two row number of vertices to be equal to the directed walk of corresponding bypass channel matrix number element value；

If b3. path selected by branch road winding having string number of vertices equal to corresponding element value, then need the size of another row number of vertices Yu corresponding element value is judged, particularly as follows:

If b31. another row number of vertices is less than corresponding element value, then repeats step a and continue retrieval；

If b32. another row number of vertices is more than corresponding element value, erroneous path then occurs, and this last item limit, path of labelling is erroneous path, return to the initial vertex on the last item limit as new starting point, an other limit is selected to continue to judge, until retrieving active path, till namely finding two row number of vertices to be equal to the directed walk of corresponding bypass channel matrix number element value；

If b33. another row number of vertices is equal to corresponding element value, then find active path, store summit and the limit of this path process, and first summit and tail summit.

C. judge that winding connects whether the limit being connected between any one starting point with minimum point in directed graph group is all labeled；If being all labeled, then the active path being starting point with this summit all finds, and continues to start retrieval with next summit for starting point and judges, till in winding connection directed graph group, all summits all complete the retrieval of active path；Wherein, minimum point is two summits that starting point subtracts 1 at a distance of each group correspondence bypass channel matrix number element sum.

In step s 6, the active path that each great Zu Neige group correspondence branch road winding connects is coordinated；

An embodiment according to the application, referring to Fig. 8, method particularly includes:

D. union is taken for the summit that the active path of a great Zu Neige group correspondence branch road winding connection of bypass channel matrix number is passed；

E. judge that whether gained union connects the set equality on all summits in directed graph group with corresponding winding；

F. if equal to the set on all summits, storage coordinate active path that successful each branch road winding connects, and the first summit of active path and tail summit, until the active path that place great Zu Zhongge group correspondence branch road winding connects all coordinates complete；

G. forward next big group to, repeat step d to step f, until the active path that all great Zu Zhongge groups correspondence branch road winding connects coordinates complete.

In the step s 7, then the active path that winding corresponding between each big group connects is coordinated, be finally completed the optimization design that whole alternating current generator asymmetric-branches winding connects.An embodiment according to the application, referring to Fig. 9, method particularly includes:

H. take the active path that adjacent two big group of correspondence windings connect, it is judged that the active path that same branch road winding connects in big group of later first summit with whether the difference on tail summit in previous big group is 1；

If i. each branch road difference is 1, then completing the cooperation of the active path that corresponding winding connects between big group, storage coordinates the active path that successfully the corresponding winding of big group connects.

J. gradually take two next adjacent big group, repeat step h and step i；If all having, in each big group, the coordinated scheme satisfied condition, then the active path that between big group, corresponding winding connects coordinates successfully, is met the winding connection scheme of requirement.

Below for 6 branch road 10 pole 360 groove three phase alternating current motors, further the specific embodiment of the present invention is described in detail in conjunction with accompanying drawing, is embodied as step as follows:

According to Stator Windings of AC Motor basic parameter, calculate the sum of every comprised groove vector of branch road.

(1) total groove number Z of Stator Windings of AC Motor be 360, number of pole-pairs P be 5, circuitry number a be 6, according to formula (1), calculate the total n obtaining every branch road comprised groove vector；

$n=\frac{Z}{m\×a}=\frac{360}{3\×6}=20---\left(1\right)$

(2) the number scope of the same phase groove vector comprised in every branch road is between 1～3.

(3) each branch road same phase groove vector number and be 5.

In winding connection configuration grid figure, all branch road coils arrangement schemes satisfied condition are selected according to these three condition；

Comprise the number of corresponding phase groove vector according to each branch road coils arrangement scheme, calculate the size of all branch road coils arrangement schemes selected synthesis electromotive force according to formula (2)；

$e=\underset{i=1}{\overset{q}{\Σ}}{N}_i{e}^{{\mathrm{j\θ}}_i}---\left(2\right)$

In formula, N_iFor groove vector number,For the electromotive force that groove vector is corresponding.

The branch road amplitude degree of asymmetry of each coils arrangement scheme is calculated further according to formula (3)；

$\mathrm{\Δ}=\frac{E_{max}-E_{\min }}{E_{max}}\×100\%---\left(3\right)$

In formula: E_maxMaximum for branch road coils arrangement scheme amplitude；E_minMinima for the amplitude of branch road coils arrangement scheme；

Maximum phase difference is calculated according to formula (4)；

According to designing requirement, wherein amplitude degree of asymmetry limit value is 0.5%, and maximum phase difference limit value is 0.5 °；

Poor according to above-mentioned amplitude degree of asymmetry and maximum phase, select amplitude degree of asymmetry and the maximum phase all less coils arrangement scheme of difference, and the coils arrangement scheme obtained is stored with the form of bypass channel matrix number；For one of them coils arrangement scheme, the amplitude degree of asymmetry of this arrangement scheme is 0.076%, and maximum phase difference is 0.012 °, and its bypass channel matrix number is as shown in Figure 10；This bypass channel matrix number line number is 3, and equal to parallel branch number, columns is 12, and equal to MgO-ZrO_2 brick, element representation every the branch road in matrix comprises the number of corresponding phase groove vector.

Being grouped according to adjacent two principles being classified as in big group, each big group one group of behavior by the bypass channel matrix number of above-mentioned coils arrangement scheme, corresponding winding connection side's trrellis diagram is grouped according to adjacent two principles being classified as a grid figure group；

Bypass channel matrix number carries out packet transaction according to the method described above, and adjacent two row are divided into one big group, in each big group, it is divided into a group by being about to the element of same a line again, the bypass channel matrix number one of this coils arrangement scheme is divided into organizes 6 greatly, group 18, as shown in figure 11.

Figure 12 is winding connection side's trrellis diagram of coils arrangement option A phase leukorrhagia in the present embodiment, and wherein, columns is MgO-ZrO_2 brick is 12, and line number is that to add 1 be 6 to number of pole-pairs, and each grid represents corresponding groove number；In order to become apparent from reflection wave winding connection intuitively, increasing the grid identical with the first row in winding connection side's trrellis diagram last column, this row grid only represents the connection of corresponding groove winding.

Above-mentioned winding connection side's trrellis diagram being carried out packet transaction, as shown in figure 13, adjacent two row is divided into a grid figure group, winding connection side's trrellis diagram corresponding to this coils arrangement scheme is divided into obtain 6 grid figure groups.

Above-mentioned grid figure group is converted to corresponding winding and connects directed graph group, as shown in figure 14；Owing to design specifying do not allow appearance across pole wiring, by above-mentioned linking rule, the summit directed connection that grid figure group correspondence winding connects in directed graph group is got up, as shown in figure 15.

Element value according to bypass channel matrix number Zhong Ge group, connects at above-mentioned corresponding winding and selects the active path that each group correspondence branch road winding connects in directed graph group, as with 1 for starting point, carried out directed walk retrieval, as shown in figure 16 in group；If this group's correspondence bypass channel matrix number element is [2,2], represent that this directed walk connects the number of first row and secondary series summit in directed graph group through winding and is 2, be retrieved as example with what retrieve directed walk that starting point is 1, particularly as follows:

Start with 1 for starting point, as selected 1-2 ' limit labelling, then the corresponding summit that connects is 2 ' points, now path is 1 through two numbers arranging summit, continue retrieval, as selected 2 '-3 limits labelling, then corresponding connection endpoint is 3 points, now path through first row number of vertices be 2, meet number requirement, if continuing to select 3-4 limit, corresponding connection endpoint is 4 points, then first row number of vertices is 3 exceed element value, retrieval error occurs, this limit of labelling is mistake limit, return 3 points, 3-4 ' limit, another limit is selected to judge, now path is equal to corresponding element value through number of vertices, find an active path 1-2 '-3-4 '.

By above-mentioned retrieval mode by be starting point with 1 all number of vertices meet the active path of requirement and be retrieved, concrete basis for estimation is that starting point is to whether the limit between minimum point is all labeled；In this group, with summit 1 for starting point, its minimum point is 1+2+2-1=4, then minimum point is 4 and 4 ' points.

Proceed the retrieval of active path in group according to same method, finally give with 1 for all active paths satisfied condition of starting point, as shown in figure 17, the active path one being starting point with 1 in this group has 3, respectively 1-2 '-3-4 ', 1-2-3 '-4 ', 1-2 '-3 '-4.

Being coordinated by the active path that all groups branch road winding in each big group connects, the method is to complete cooperation by the active path union of sets collection through summit is connected the contrast of entirety vertex set in directed graph group with corresponding winding.

Figure 18 is that the active path that in big group, each branch road correspondence branch road winding connects coordinates successful example, for the cooperation of each branch road directed walk in Figure 12 first grid figure, this big group totally 3 branch roads, corresponding bypass channel matrix number element respectively [13], [21], [21], Figure 15 selects the active path respectively S1={1 of the set through summit, 2 ', 3 ', 4 ' }, S2={3, 4, 5 ' }, S3={5, 1 ', 2}, then S1, S2, the union of S3 is { 1, 2, 3, 4, 5, 1 ', 2 ', 3 ', 4 ', 5 ' } directed graph group entirety vertex set is connected with corresponding winding identical, this type of situation is for coordinate successfully；If S1={1,2 ', 3 ', 4 ' }, S2={3,4,5 ' }, S3={3,4,5 ' }, then branch road 2 shares 3 with branch road 3,4 and 5 ' slot coils, same slot coil is reused, such connection can not required parallel branch in Construction designing, belong to and coordinate failed scheme, the union then showing S1, S2, S3 in vertex set is { 1,3,4,2 ', 3 ', 4 ', 5 ' } directed graph group entirety vertex set { 1,2,3,4,5 is connected less than corresponding winding, 1 ', 2 ', 3 ', 4 ', 5 ' }.

Being coordinated by the active path that winding corresponding between each big group connects, as shown in figure 19, Figure 19 is that between adjacent two big group, active path coordinates successful example, for the cooperation of directed walk between in Figure 12 first and second grid figure groups again；In first big group, Article 1 branch road active path is path shown in dotted line, and this path starting point is 1, and terminal is 4 '；Article 2 branch road active path is path shown in heavy line, and this path starting point is 5, and terminal is 2；Article 3 branch road active path is path shown in fine line, and this path starting point is 3, and terminal is 5 '；In second big group, the starting point of branch road 1 is 5, and terminal is 2 '；The starting point of branch road 2 is 3, and terminal is 5 '；The starting point of branch road 3 is 1, and terminal is 4 '；

Head and the tail are sequentially connected with and refer to, the tail of same branch road active path in previous big group, the head of big with later group of same branch road active path meets wave winding annexation, few a line in position that position that namely previous big group of tail is expert at is big group first be expert at than later；

As shown in figure 19, the tail that branch road 1 is previous big group is 4 ', and rear one head organized greatly is 5, meets matching principle；The tail that branch road 2 is previous big group is 2, and rear one head organized greatly is 3, meets matching principle；The tail that branch road 3 is previous big group is 5 ', and rear one head organized greatly is 1, meets matching principle；

Otherwise, the head and the tail of two big group in same a line, or the tail of previous big group than rear one the many a line of the head of group or multirow greatly, or the wiring condition of the tail of previous big group multirow fewer than the head of rear one group greatly, be all unsatisfactory for cooperation requirement.

In sum, alternating current generator asymmetric-branches winding provided by the invention connects Optimization Design and is capable of alternating current generator asymmetric-branches winding connection optimization, and can automatically filter a large amount of useless scheme, substantially increase precision and the efficiency of the design of whole asymmetric-branches winding, there is stronger practicality；Meanwhile, obtain, by this Optimization Design, the coils arrangement scheme that asymmetric-branches degree is little and end connection is clean and tidy, be conducive to reducing circulation loss between branch road, save material, strengthen winding overhang and fix, it is ensured that the efficiency of generating set operation and stability.

Claims (10)

1. alternating current generator asymmetric-branches winding connects Optimization Design, it is characterized in that, including:

According to Stator Windings of AC Motor basic parameter, select amplitude degree of asymmetry and all less coils arrangement scheme of phase contrast；

Described coils arrangement scheme is stored with the form of bypass channel matrix number；

Being grouped according to adjacent two principles being classified as in big group, each big group one group of behavior by the bypass channel matrix number of described coils arrangement scheme, corresponding winding connection side's trrellis diagram is grouped according to adjacent two principles being classified as a grid figure group；

Respectively described grid figure group is converted to corresponding winding and connects directed graph group；

Element value according to bypass channel matrix number Zhong Ge group, connects at described corresponding winding and selects the active path that each group correspondence branch road winding connects in directed graph group；

The active path that each great Zu Neige group correspondence branch road winding connects is coordinated；

Again the active path that winding corresponding between each big group connects is coordinated, be finally completed the optimization design that whole alternating current generator asymmetric-branches winding connects.

2. alternating current generator asymmetric-branches winding according to claim 1 connects Optimization Design, it is characterized in that, according to Stator Windings of AC Motor basic parameter, selects amplitude degree of asymmetry and all less coils arrangement scheme of phase contrast, particularly as follows:

According to Stator Windings of AC Motor basic parameter, determine the number scope of the same phase groove vector that the sum of every comprised groove vector of branch road, every branch road comprise, it is the principle of number of pole-pairs according to above-mentioned qualifications and each branch road same phase groove vector number sum, selects the coils arrangement scheme satisfied condition；

Calculate amplitude and the phase place of each branch road synthesis electromotive force of described coils arrangement scheme, and according to described amplitude and phase place, the amplitude degree of asymmetry and the maximum phase that calculate described coils arrangement scheme are poor, choose amplitude degree of asymmetry and the maximum phase all less coils arrangement scheme of difference.

3. alternating current generator asymmetric-branches winding according to claim 1 connects Optimization Design, it is characterized in that, described coils arrangement scheme is stored with the form of bypass channel matrix number, particularly as follows:

In bypass channel matrix number, each row element represents the groove vector that in coils arrangement scheme, a branch road comprises, the groove vector of different lines element representation out of phase, the number of corresponding phase groove vector in the element representation branch road in matrix.

4. alternating current generator asymmetric-branches winding according to claim 1 connects Optimization Design, it is characterized in that, the bypass channel matrix number of described coils arrangement scheme is grouped according to adjacent two principles being classified as in big group, each big group one group of behavior, corresponding winding connection side's trrellis diagram is grouped according to adjacent two principles being classified as a grid figure group, particularly as follows:

First, the bypass channel matrix number of coils arrangement scheme is grouped, particularly as follows:

From the first row of bypass channel matrix number, adjacent two row are divided into one big group；In each big group, then it is divided into a group by being about to the element of same a line；

Again corresponding winding connection side's trrellis diagram is grouped according to the method identical with described bypass channel matrix number, particularly as follows:

From the first row of winding connection side's trrellis diagram, adjacent two row are divided into a grid figure group.

5. alternating current generator asymmetric-branches winding according to claim 1 connects Optimization Design, it is characterized in that, described grid figure group converts to corresponding winding respectively and connects directed graph group, particularly as follows:

The corresponding winding of groove number in each grid figure group connects the summit in directed graph group, and in grid figure group, the number of each column groove number is identical with the number on each column summit in winding connection directed graph group；

Across the principle of pole wiring, and wave winding type of attachment can not be adopted according to winding in grid figure, described each side trrellis diagram group be converted to corresponding winding and connects directed graph group.

6. alternating current generator asymmetric-branches winding according to claim 1 connects Optimization Design, it is characterized in that, element value according to bypass channel matrix number Zhong Ge group, connect at described each side trrellis diagram group correspondence winding and directed graph group is selected the active path that each group correspondence branch road winding connects, particularly as follows:

A. choosing any one summit in winding connection directed graph group, as starting point, choose a limit labelling and start retrieval, using the terminal of this edge connection as ground zero, one limit labelling of reselection also proceeds retrieval and judges；

B. relatively more selected path connects the first and second row sum on summit and size of corresponding element value in group in corresponding bypass channel matrix number in directed graph group through winding, according to judged result, retrieve the active path that the branch road winding that each group is starting point with a summit connects；

C. judge that winding connects whether the limit being connected between any one starting point with minimum point in directed graph group is all labeled；If being all labeled, then the active path being starting point with this summit all finds, and continues to start retrieval with next summit for starting point and judges, till in winding connection directed graph group, all summits all complete the retrieval of active path；Wherein, minimum point is two summits that starting point subtracts 1 at a distance of each group correspondence bypass channel matrix number element sum.

7. alternating current generator asymmetric-branches winding according to claim 6 connects Optimization Design, it is characterized in that, relatively more selected path connects the first and second row sum on summit and size of corresponding element value in group in corresponding bypass channel matrix number in directed graph group through winding, according to judged result, retrieve active path, particularly as follows:

If b1. the number on Zhong Lianglie summit, path is respectively less than corresponding element value selected by branch road winding, then repeats step a continuation retrieval and go down；

If b2. path selected by branch road winding having string number of vertices to exceed corresponding element value, erroneous path then occurs, and this last item limit, path of labelling is erroneous path, return to the initial vertex on the last item limit as new starting point, an other limit is selected to continue to judge, until retrieving active path, till namely finding two row number of vertices to be equal to the directed walk of corresponding bypass channel matrix number element value；

If b3. path selected by branch road winding having string number of vertices equal to corresponding element value, then need the size of another row number of vertices Yu corresponding element value is judged, particularly as follows:

If b31. another row number of vertices is less than corresponding element value, then repeats step a and continue retrieval；

If b32. another row number of vertices is more than corresponding element value, erroneous path then occurs, and this last item limit, path of labelling is erroneous path, return to the initial vertex on the last item limit as new starting point, an other limit is selected to continue to judge, until retrieving active path, till namely finding two row number of vertices to be equal to the directed walk of corresponding bypass channel matrix number element value；

If b33. another row number of vertices is equal to corresponding element value, then find active path, store summit and the limit of this path process, and first summit and tail summit.

8. alternating current generator asymmetric-branches winding according to claim 1 connects Optimization Design, it is characterized in that, is coordinated by the active path that each great Zu Neige group correspondence branch road winding connects, particularly as follows:

D. union is taken for the summit that the active path of a great Zu Neige group correspondence branch road winding connection of bypass channel matrix number is passed；

E. judge that whether gained union connects the set equality on all summits in directed graph group with corresponding winding；

F. if equal to the set on all summits, storage coordinate active path that successful each branch road winding connects, and the first summit of active path and tail summit, until the active path that place great Zu Zhongge group correspondence branch road winding connects all coordinates complete；

G. forward next big group to, repeat step d to step f, until the active path that all great Zu Zhongge groups correspondence branch road winding connects coordinates complete.

9. alternating current generator asymmetric-branches winding according to claim 1 connects Optimization Design, it is characterized in that, then is coordinated by the active path that winding corresponding between each big group connects, particularly as follows:

H. take the active path that adjacent two big group of correspondence windings connect, it is judged that the active path that same branch road winding connects in big group of later first summit with whether the difference on tail summit in previous big group is 1；

If i. each branch road difference is 1, then completing the cooperation of the active path that corresponding winding connects between big group, storage coordinates the active path that successfully the corresponding winding of big group connects；

J. gradually take two next adjacent big group, repeat step h and step i；If all having, in each big group, the coordinated scheme satisfied condition, then the active path that between big group, corresponding winding connects coordinates successfully, is met the winding connection scheme of requirement.

10. connected Optimization Design by the arbitrary described alternating current generator asymmetric-branches winding of claim 1-9 and design the asymmetric-branches winding connection scheme obtained.