CN207426195U - A kind of multipole composite bus bar for traction convertor - Google Patents

Abstract

The utility model discloses a kind of multipole composite bus bars for traction convertor, the busbar includes the first kind busbar and the second class busbar of physical separation, the first kind busbar bending part is set there are four plus end, for connecting isolating device, anode hole there are two being set below the second class busbar, for connecting isolating device, the first kind busbar is used for the Support Capacitor and power module of each axis power unit DC link, and the second class busbar is used to connect the Support Capacitor and inverter module of each axis auxiliary power unit DC link.The utility model provide a kind of multipole composite bus bar for traction convertor, can make coaxially between anode be mutually isolated, when catastrophe failure occurs in current transformer, failure axis can be cut off, ensure the overall operation of traction convertor.

Description

A kind of multipole composite bus bar for traction convertor

Technical field

The utility model is related to power electronics fields, particularly relate to a kind of compound mother of the multipole for traction convertor Row.

Background technology

As the continuous development in track traffic market is with ripe, the reliability of electric locomotive traction current transformer, which has become, to be set The target of meter personnel's overriding concern.As AC electric locomotive traction convertor, the reliability core of entire current transformer design is just It is the reliability of DC link.Composite bus bar is used to draw all the time as the important wiring mode for substituting copper bus-bar, cable The DC link connection of current transformer, plays an important roll；But composite bus bar coordinates traditional traction convertor, there are following skills Art problem：

Each current transformer possesses multiple inverters, controls multiple traction electric machines, and the corresponding electricity of each traction electric machine Road axis is linked together by secondary filtering circuit, if each circuit axis does not apply measure and carries out individually isolation connection, when Conventional electric power Locomotive Converter occurs when such as IGBT (insulated gate bipolar transistor) is fried to damage failure, it is necessary to cut off entire Traction convertor maintains operation, and power loss is very big, causes serious consequence.

If conventional electric power Locomotive Converter is isolated road is respectively returned, it is necessary to be used using electronic isolating device Copper bus-bar is often returned the connection on road and electronic isolating device, and the stray inductance value of entire circuit is bigger than normal at this time, be easy to cause The distortion of the spike and electric current of voltage, increases the fever of each component, and the unstability of entire circuit system increases therewith.

Utility model content

In view of this, the purpose of this utility model is to provide a kind of multipole composite bus bar for traction convertor, When catastrophe failure occurs in current transformer, failure axis can be cut off, ensures the overall operation of traction convertor.

Based on a kind of above-mentioned purpose multipole composite bus bar for traction convertor provided by the utility model, the busbar First kind busbar and the second class busbar including physical separation, the first kind busbar bending part set there are four plus end, are used for Isolating device is connected, is set below the second class busbar there are two anode hole, for connecting isolating device, the first kind busbar For the Support Capacitor and power module of each axis power unit DC link, the second class busbar supplies for connecting each axis auxiliary The Support Capacitor and inverter module of electric unit DC link.

Optionally, the first kind busbar includes the first busbar, sets that there are four anode hole and four above first busbar A cathode hole, two anode holes are corresponding with two cathode holes, and the anode hole is used to connect the Support Capacitor anode of first axle Son, the cathode hole are used to connect the Support Capacitor negative terminal of first axle, set below first busbar there are two anode hole and Two cathode holes, for connecting the power module of first axle.

Optionally, the first kind busbar further includes the second busbar, set above second busbar there are four anode hole and Six cathode holes, the first row above second busbar are set there are two anode hole and two cathode holes, on second busbar The second row of side is set there are two anode hole and four cathode holes, two cathode holes of the second row above second busbar and institute State two anode holes of the second row that two anode holes of the first row above the second busbar are corresponding, above second busbar It is corresponding with two cathode holes of the first row above second busbar；Four anode holes are connecting the Support Capacitor of the second axis just Terminal is connected the Support Capacitor negative terminal of the second axis, other two cathode hole with the corresponding four cathode holes in four anode holes Connect the Support Capacitor negative terminal of the 3rd axis；It is set below second busbar there are two anode hole and two cathode holes, for even Connect the power module of the second axis.

Optionally, the three classes busbar includes the 3rd busbar, and the 3rd busbar is set there are four anode hole, and the described 3rd Two anode holes of busbar first row are corresponding with two cathode holes of second busbar, for connecting the support of the 3rd axis electricity Hold plus end.

From the above it can be seen that the advantages of multipole composite bus bar provided by the utility model for traction convertor Be both to complete it is not coaxial between anode be mutually isolated, and be connected to isolating device, and by all Support Capacitors and power The cathode of module is linked together by low sense connection mode, and multipole composite bus bar provided by the invention is combined with isolating device, When traction convertor breaks down, failure axis can be cut off, so as to ensure that the overall operation of traction convertor.The present invention provides The low sense connection power module and Support Capacitor of multipole composite bus bar, effectively reduce the stray inductance in circuit, improve The performance and reliability of traction convertor.Meanwhile the design method of multipole composite bus bar provided by the invention, it can be applicable to each In the project of a demand Fault Isolation, it is only necessary to the position of power module and Support Capacitor is adjusted, be a kind of versatility The structural member of design.

Description of the drawings

It in order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this Some embodiments of invention, for those of ordinary skill in the art, without creative efforts, can be with Other attached drawings are obtained according to these attached drawings.

Fig. 1 is that the embodiment diagram of multipole composite bus bar structure provided by the utility model is intended to；

Fig. 2 is the embodiment schematic diagram of the first busbar provided by the utility model；

Fig. 3 is the embodiment schematic diagram of the second busbar provided by the utility model；

Fig. 4 is the embodiment schematic diagram of the 3rd busbar provided by the utility model；

The embodiment schematic diagram of Fig. 5 positions multipole composite bus bar top view provided by the utility model；

Fig. 6 is the embodiment schematic diagram of multipole composite bus bar circuit provided by the utility model connection.

Wherein, 1, the first busbar；2, the second busbar；3, the 3rd busbar；4, cathode hole；5, anode hole；6, plus end.

Specific embodiment

For the purpose of this utility model, technical solution and advantage is more clearly understood, below in conjunction with specific embodiment, and Referring to the drawings, the utility model is further described.

It should be noted that all statements for using " first " and " second " are for area in the utility model embodiment Be divided to two non-equal entities of same names or non-equal parameter, it is seen that " first " " second " only for statement convenience, The restriction to the utility model embodiment is should not be construed as, following embodiment no longer illustrates this one by one.

Based on above-mentioned purpose, the embodiment of the utility model proposes a kind of compound mother of the multipole for traction convertor Row, when catastrophe failure occurs in current transformer, can cut off failure axis, ensure the overall operation of traction convertor.

As described in figures 1 and 5, a kind of multipole composite bus bar for traction convertor provided by the utility model, the mother Row includes first kind busbar and the second class busbar, and the first kind busbar bending part sets there are four plus end 6, isolates for connecting Device, the second class busbar lower section are set there are two anode hole 5, and for connecting isolating device, the first kind busbar is for each The Support Capacitor and power module of axis power unit DC link, the second class busbar are used to connect each axis auxiliary power unit The Support Capacitor and inverter module of DC link.

As shown in Fig. 2, the embodiment schematic diagram for the first busbar provided by the utility model；The first kind busbar includes First busbar 1, first busbar, 1 top set that there are four anode hole 5 and four cathode holes 4, two anode holes 5 and two cathode Hole 4 is corresponding, and the anode hole 5 is used to connect the Support Capacitor plus end of first axle, and the cathode hole 4 is used to connect first axle Support Capacitor negative terminal, first busbar, 1 lower section is set there are two anode hole 5 and two cathode holes 4, for connecting first axle Power module.

As shown in figure 3, the embodiment schematic diagram for the second busbar provided by the utility model；The first kind busbar also wraps Include the second busbar 2,2 top of the second busbar is set there are four anode hole 5 and six cathode holes 4, above second busbar First row is set there are two anode hole and two cathode holes, and the second row above second busbar sets that there are two anode holes 5 and four A cathode hole 4, two cathode holes 4 of the second row of 2 top of the second busbar and the first row of 2 top of the second busbar Two anode holes 5 are corresponding, two anode holes 5 of the second row of 2 top of the second busbar and 2 top of the second busbar Two cathode holes 4 of first row are corresponding；Four anode holes 5 connect the Support Capacitor plus end of the second axis, with four anode holes 5 Corresponding four cathode holes 4 connect the Support Capacitor negative terminal of the second axis, and other two cathode hole 4 connects the support of the 3rd axis Capacitance negative terminal；Second busbar, 2 lower section is set there are two anode hole 5 and two cathode holes 4, for connecting the power of the second axis Module.

As shown in figure 4, the embodiment schematic diagram for the 3rd busbar provided by the utility model；The three classes busbar includes 3rd busbar 3, the 3rd busbar 3 are set there are four anode hole 5, two anode holes 5 of 3 first row of the 3rd busbar with it is described Two cathode holes 4 of the second busbar 2 are corresponding, for connecting the Support Capacitor plus end of the 3rd axis.

As shown in fig. 6, the embodiment schematic diagram for multipole composite bus bar circuit provided by the utility model connection；Multipole is answered Close busbar circuit connecting mode：Connection in circuit is represented with A/B/C, corresponds to the first busbar 1, the second busbar 2 and the 3rd respectively Busbar 3, corresponds to first axle, the second axis and the 3rd axis respectively, and the plus end 6 that wherein 4QC1 represents first axle is connected to isolation dress It puts, the plus end 6 that 4QC2 represents the second axis is connected to isolating device, is cut each axis from circuit by the break-make of isolating device It removes, so as to promote the availability of entire current transformer.

Therefore, by the combination between each busbar, coaxial Support Capacitor links together with power module, it is not coaxial it Between anode be mutually isolated, and be connected to isolating device；The cathode of all Support Capacitors and power module interconnects, It will not be coaxially completely isolated by isolating device.

From above-described embodiment as can be seen that the compound mother of the multipole for traction convertor that the utility model embodiment provides The advantages of row be both to complete it is not coaxial between anode be mutually isolated, and be connected to isolating device, and by all support electricity Hold and the cathode of power module is linked together by low sense connection mode, multipole composite bus bar provided by the invention is with isolating dress Combination is put, when traction convertor breaks down, failure axis can be cut off, so as to ensure that the overall operation of traction convertor.This The low sense connection power module of the multipole composite bus bar provided and Support Capacitor are provided, effectively reduce the parasitism electricity in circuit Sense improves the performance and reliability of traction convertor.Meanwhile the design method of multipole composite bus bar provided by the invention, it can It applies in the project of each demand Fault Isolation, it is only necessary to the position of power module and Support Capacitor is adjusted, be A kind of structural member of cross-species transferability.

Those of ordinary skills in the art should understand that：The discussion of any of the above embodiment is exemplary only, not It is intended to imply that the scope of the present disclosure is limited to these examples (including claim)；Under the thinking of the utility model, more than it is real Applying can also be combined between the technical characteristic in example or different embodiment, and there are the utility model as described above Many other variations of different aspect, for simplicity, they are not provided in details.Therefore, all spirit in the utility model Within principle, any omission for being made, modification, equivalent substitution, improvement etc. should be included in the scope of protection of the utility model Within.

Claims (4)

1. a kind of multipole composite bus bar for traction convertor, which is characterized in that the busbar includes the first of physical separation Class busbar and the second class busbar, the first kind busbar bending part are set there are four plus end, for connecting isolating device, described the It is set below two class busbars there are two anode hole, for connecting isolating device, the first kind busbar is straight for each axis power unit The Support Capacitor and power module of link are flowed, the second class busbar is used to connect the branch of each axis auxiliary power unit DC link Support capacitance and inverter module.

2. the multipole composite bus bar according to claim 1 for traction convertor, which is characterized in that the first kind is female Row includes the first busbar, is set above first busbar there are four anode hole and four cathode holes, two anode holes are born with two Pole hole is corresponding, and the anode hole is used to connect the Support Capacitor plus end of first axle, and the cathode hole is used to connect first axle Support Capacitor negative terminal, set there are two anode hole and two cathode holes, for connecting first axle below first busbar Power module.

3. the multipole composite bus bar according to claim 1 for traction convertor, which is characterized in that the first kind is female Row further includes the second busbar, is set above second busbar there are four anode hole and six cathode holes, above second busbar First row set there are two anode hole and two cathode holes, the second row above second busbar sets that there are two anode hole and four A cathode hole, two cathode holes of the second row above second busbar with two of the first row above second busbar Anode hole is corresponding, two anode holes and the first row above second busbar of the second row above second busbar Two cathode holes are corresponding；Four anode holes connect the Support Capacitor plus end of the second axis, with four anode holes corresponding four A cathode hole connects the Support Capacitor negative terminal of the second axis, and other two cathode hole connects the Support Capacitor negative terminal of the 3rd axis； It is set below second busbar there are two anode hole and two cathode holes, for connecting the power module of the second axis.

4. the multipole composite bus bar according to claim 3 for traction convertor, which is characterized in that second class is female Row includes the 3rd busbar, the 3rd busbar set there are four anode hole, two anode holes of the 3rd busbar first row and institute State that two cathode holes of the second busbar are corresponding, for connecting the Support Capacitor plus end of the 3rd axis.