CN209472560U - A kind of seperated composite bus bar suitable for diesel locomotive power module - Google Patents
A kind of seperated composite bus bar suitable for diesel locomotive power module Download PDFInfo
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- CN209472560U CN209472560U CN201821418083.6U CN201821418083U CN209472560U CN 209472560 U CN209472560 U CN 209472560U CN 201821418083 U CN201821418083 U CN 201821418083U CN 209472560 U CN209472560 U CN 209472560U
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- bus bar
- alternating current
- seperated
- power module
- diesel locomotive
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Abstract
The utility model discloses a kind of seperated composite bus bars suitable for diesel locomotive power module, are made of DC master row and alternating current bus bar, DC master row and alternating current bus bar adopt a split structure；The DC master row and alternating current bus bar are flat structure, and multiple DC master rows and alternating current bus bar mutually stack and the support pad post by being arranged on DC master row or alternating current bus bar is installed together.The utility model replaces cable, copper bar or hot compress busbar to be electrically connected using laminated composite bus bar, reduces many and diverse of previous wiring, so that layout is simple, quality is more reliable；The volume and weight for reducing system facilitate the maintenance and maintenance of main circuit；And the utility model uses symmetric design, is completely suitable for two power modules of mirror image installation.More importantly reducing loop inductance, it is ensured that IGBT safely and reliably works, and greatly improves the reliability of product, and small lot is successfully applied in diesel locomotive traction inversion+copped wave module at present, achieves good economic benefit.
Description
Technical field
The utility model belongs to locomotive technology field, is related to the power module of diesel locomotive, especially a kind of suitable for interior
The seperated composite bus bar of combustion locomotive power module.
Background technique
The power device of high power frequency conversion power supply is in switching process, since DC energy storage capacitor is between IGBT device
There are parasitic inductances on DC bus, while there is also inductance for IGBT module itself, therefore can generate very high peak voltage, mistake
High peak voltage increases along with switching frequency, device can be made to overheat, in addition will cause sometimes IGBT it is out of control and be more than device
Load rated safety workspace and damage.It is this to solve the problems, such as, it generallys use laminated composite bus bar and carries out between power device
Electrical connection.It is by main circuit busbar at flat, and is stacked together according to certain order, is adopted between every layer
It is isolated with the material of high insulation resistance, conductive layer and insulating layer is pressed by an entirety by related process.It is not only full in this way
The foot requirement of low sense, can also improve the reliability of IGBT work.
Using stack bus bar, high-intensitive integral adhesive guarantee does not loosen for a long time, can make copper bar as far as possible under same electric current
It is thinned, being vibrated with elastic compensating influences, and totally-enclosed structure is also prevented from moisture and penetrates into insulating materials encapsulation, eliminates the prestige for climbing electrical breakdown
The side of body minimizes the problem of vibrated traditional seperated busbar, salt fog and dust influence and seriously threaten equipment safety.
With the fast development of Chinese high-speed rail technology, high-speed rail technology is also gradually promoted and applied in diesel locomotive, city rail vehicle
Etc. different fields.As " up-and-coming youngster " of world's high-speed rail industry, Chinese high-speed rail constantly accelerates going global paces in recent years.
In countries such as South Africa, India, it has been trend of the times that diesel locomotive transmission device develops to AC Drive direction, and the market demand
It has a high potential.
In the prior art, critical component such as IGBT in major loop, Support Capacitor, the electrical connection between absorbing circuit are logical
It is connected frequently with cable, copper bar, hot compress busbar etc..This scheme tool has the following defects:
1) loop stray inductance is larger, causes due to voltage spikes, is easily damaged power device, and circuit reliability is poor: major loop
When electrical connection is using common cable, copper bar, the connection of hot compress busbar, the stray inductance of circuit is larger, in IGBT switching process
Higher due to voltage spikes will be generated, has centainly power device to impact, influences the service life of power device, to reduce power
The reliability of translation circuit affects the whole system mean free error time.
2) installation is inconvenient, and structure is too fat to move, takes up space big: electrical when circuit is using the connection such as cable, copper bar, hot compress busbar
Gap increases, and entire power cell volume is caused to increase, and the space for occupying current transformer increases, and is unfavorable for the entire space of train and total
The reduction of quality.
3) integrated level is low, needs repeatedly to install, and operates and is easy error.
4) structure and material used by is unsatisfactory under high circumstance temperature high humility (circumstance temperature is greater than 45 DEG C, 100% humidity) environment
Application.
In addition, in the prior art, power module composite bus bar generallys use DC master row, alternating current bus bar integrated design side
Case designs the DC master row of main circuit connection, alternating current bus bar integral.This scheme composite bus bar is used for connection switch device
Part IGBT will be finally directly overlying on switching device.Power module busbar higher for integrated level, the switching device of connection compared with
More, integrated bus bar weight is larger, and single worker operation is very difficult, and when placement is easy to produce downward mechanical shock, right
IGBT generates security risk.And insulating materials must be increased among DC master row and alternating current bus bar to meet wanting for shelf depreciation
It asks, increased costs whiles also increases weight.
Utility model content
The shortcomings that the purpose of the utility model is to overcome the above-mentioned prior arts provides a kind of suitable for diesel locomotive power
The seperated composite bus bar of module, good using integrated level from practical application request, the stacking that stray inductance is small, light-weight
The composite bus bar of formula fission.
The purpose of this utility model solves by the following technical programs:
This seperated composite bus bar suitable for diesel locomotive power module, is made of, institute DC master row and alternating current bus bar
It states DC master row and alternating current bus bar adopts a split structure；The DC master row and alternating current bus bar are flat structure, and more
A DC master row and alternating current bus bar mutually stack and the support pad post by being arranged on DC master row or alternating current bus bar is mounted on
Together.
Further, above-mentioned DC master row and alternating current bus bar use based on polyvinyl fluoride PVF plate.
Further, it is dielectrically separated between the DC master row and alternating current bus bar of the above adjacent one another by air.
Further, it is insulated between the conductive layer of above each busbar using laminate.
Further, above-mentioned laminate is GPO-3 laminate.
Further, a side of above-mentioned DC master row is arranged flanging and draws plus end and negative terminal in the side edge of flanging
Son.
Further, above-mentioned plus end and negative terminal are provided with two pairs.
Further, above-mentioned alternating current bus bar includes that the copped wave end phase CHO and three inversions mutually exchange and input busbar terminal: the end U,
The end V and the end W；The end CHO is identical with the terminal structure at the end U, the end V and the end W, and uses symmetric design.
Further, a side of above-mentioned alternating current bus bar is provided with flanging, and the CHO is drawn in the side edge of flanging
End, the end U, the end V and the end W.
Compared with prior art, the utility model has the following beneficial effects:
1) the utility model solves main circuit cable or copper bar stray inductance is big, and power device is easily damaged, and circuit can
By the problem of property difference.
2) inversion busbar and copped wave busbar are integrated on a power cell by the utility model, reduce system power unit
Quantity, and facilitate the maintenance and maintenance of main circuit.
3) the utility model uses multipair positive and negative terminals, more reduces stray inductance.
4) the utility model solves that main circuit cable, copper bar connection are more, and layout complexity, the insecure problem of quality subtracts
Small system bulk, weight, and facilitate the maintenance and maintenance of main circuit.
5) the utility model designs DC master row and alternating current bus bar fission, mitigates own wt and increases insulation performance,
Reduce the mechanical shock in installation process to switching device.
6) the utility model exchange output end CHO, the end U, the end V are identical with W end structure, and use symmetric design,
It is completely suitable for two power modules of mirror image installation.
In conclusion the utility model replaces cable, copper bar or hot compress busbar electrically to be connected using laminated composite bus bar
It connects, reduces many and diverse of previous wiring, so that layout is simple, quality is more reliable；The volume and weight for reducing system, facilitate master
The maintenance and maintenance of circuit；More importantly reducing loop inductance, it is ensured that IGBT safely and reliably works, and greatly improves product
Reliability, at present small lot be successfully applied in diesel locomotive traction inversion+copped wave module in, achieve good economy
Benefit.
Detailed description of the invention
Fig. 1 is main circuit theory schematic diagram；
Fig. 2 is the DC master row structural schematic diagram of the utility model；
Fig. 3 is the alternating current bus bar structural schematic diagram of the utility model.
Wherein: 1 is DC master row；2 be alternating current bus bar；1-1 is plus end；1-2 is negative terminal.
Specific embodiment
Referring to figs. 2 and 3, the utility model is suitable for the seperated composite bus bar of diesel locomotive power module, by direct current mother
Row 1 and alternating current bus bar 2 form, and DC master row 1 and alternating current bus bar 2 adopt a split structure；DC master row 1 and alternating current bus bar 2 are equal
For flat structure, and multiple DC master rows 1 are mutually stacked with alternating current bus bar 2 and by being arranged in DC master row 1 or exchanging mother
Support pad post on row 2 is installed together.
DC master row 1 and alternating current bus bar 2 use based on polyvinyl fluoride PVF plate.
The insulation mode between busbar that the utility model is respectively stacked are as follows: the DC master row of adjacent one another with exchange mother
It is dielectrically separated between row by air, or is insulated between the conductive layer of each busbar stacked using laminate.And
Laminate is GPO-3 laminate.
A side setting flanging of DC master row 1 simultaneously draws plus end 1-1 and negative terminal 1-2 in the side edge of flanging.Just
Terminal 1-1 and negative terminal 1-2 are provided with two pairs.
Alternating current bus bar 2 includes that the end copped wave phase CHO and three inversions mutually exchange input busbar terminal: the end U, the end V and the end W.
And a side of alternating current bus bar 2 is provided with flanging, and draws the end CHO, the end U, the end V and the end W in the side edge of flanging.Exchange output
The end CHO, the end U, the end V are identical with W end structure, and use symmetric design, are completely suitable for two power of mirror image installation
Module.
In the most preferred embodiment of the utility model, DC master row 1 and alternating current bus bar 2 use edge closure formula structure.
The utility model is described in detail below in conjunction with attached drawing:
Known by Theory of Electromagnetic Field, line is made into flat cross section, the more Bao Yuekuan done under same section, its parasitism electricity
Feel smaller, opposite electric current is flowed through in adjacent wires, magnetic field cancellation can also be such that parasitic inductance reduces, and between adjacent conductor
Apart from smaller, parasitic inductance is smaller.Positive and negative anodes overlapping region is more, and parasitic inductance is smaller.It, can be by busbar according to the above theory
(including DC master row and alternating current bus bar) is designed to flat, and is stacked together according to certain order that stacks, every layer it
Between be isolated with the material of high insulation resistance.The requirement of low sense is not only met in this way, improves the reliability of IGBT work, it can also letter
Change apparatus structure, reduces volume.
Under the environmental condition in high temperature and humidity regional (areas such as subtropical climate), the insulation performance of busbar is compared to commonly
Area is stringent, the selection for busbar interlayer dielectic, although traditional NOMEX paper fire and heat endurance function admirable, holds
It is easy to moisture absorption, cause insulation performance to be greatly reduced.So using polyvinyl fluoride PVF material, its extremely low hygroscopicity and higher is utilized
Insulation performance, guarantee hot and humid environment under busbar electric property.
Inversion unit and copped wave unit are integrated into a complete power cell by the utility model, and are completed by busbar
Electrical connection between them.As shown in Figure 1:
In Fig. 1, H1 and B1, H2 and B2, H3 and B3 form a three-phase inverting circuit, and H4 and B4 form a copped wave bridge
Arm, three inverter bridge legs add a copped wave bridge arm to form an inversion chopper circuit.Composite bus bar needs the switching device connected
It is more, in order to mitigate weight, by alternating current bus bar 2 and the seperated design (referring to figs. 2 and 3) of DC master row 1, monolithic busbar (direct current
Busbar 1 or alternating current bus bar 2) weight installation can be carried out by a worker completely and operate, DC master row 1 and alternating current bus bar 2
3mm insulation board is cancelled in centre, improves the distance for supporting pad post between two pieces of busbars, is dielectrically separated from using air, is not only saved
The use of material has been saved, has mitigated overall weight, is more advantageous to the requirement of shelf depreciation.
According to the circuit theory of Fig. 1, DC master row 1 includes plus end 1-1, negative terminal 1-2, the VDC in corresponding circuits figure
+,VDC-.In view of the insulation distance between other mounting terminals, positive and negative terminals use two pairs, and reduction busbar is spuious as far as possible
Inductance；Alternating current bus bar 2 mutually exchanges input busbar, CHO, U, V, W in 1 circuit diagram of corresponding diagram with three inversions including copped wave phase.
Each interlayer dielectic selects " GPO-3 laminate ", also known as UPGM-203, and this material good electric property under high humidity has
Anti-flammability, resistance to electric arc.Insulating materials used in busbar surface is polyvinyl fluoride PVF layers, has its extremely low hygroscopicity, each mother
Mining edge closure structure prevents busbar end face from starting the arc phenomenon occurs, meets the performance requirement of busbar under hot and humid environment.
To reduce inductance, two layers of conductor is reliably exhausted with other layers using the method for welding or cold pressing all at required terminal position
The extraction of edge facilitates IGBT, capacitor, resistance and converter cabinet to be attached thereto.Busbar is placed vertically relative to ground, is radiated faster, so
Bigger current-carrying capacity can be carried under identical structure.
By designing above, the current parasitic inductance of the composite bus bar can accomplish to be less than 50nH, meet circuit requirement and height
The environmental requirement of warm high humidity.
In conclusion the utility model is designed using alternating current bus bar and DC master row fission, and uses material resistant to high temperature,
Using edge closure formula structure, meet the Special use requirement of composite bus bar under the higher environment temperature in export area and humidity.
Claims (9)
1. a kind of seperated composite bus bar suitable for diesel locomotive power module, which is characterized in that by DC master row (1) with exchange
Busbar (2) composition, the DC master row (1) and alternating current bus bar (2) adopt a split structure；The DC master row (1) with exchange
Busbar (2) is flat structure, and multiple DC master rows (1) and alternating current bus bar (2) mutually stack and by being arranged in direct current
Support pad post on busbar (1) or alternating current bus bar (2) is installed together.
2. the seperated composite bus bar according to claim 1 suitable for diesel locomotive power module, which is characterized in that described
DC master row (1) and alternating current bus bar (2) use based on polyvinyl fluoride PVF plate.
3. the seperated composite bus bar according to claim 1 suitable for diesel locomotive power module, which is characterized in that adjacent
It is dielectrically separated between the DC master row and alternating current bus bar stacked by air.
4. the seperated composite bus bar according to claim 1 suitable for diesel locomotive power module, which is characterized in that each mother
It is insulated between the conductive layer of row using laminate.
5. the seperated composite bus bar according to claim 4 suitable for diesel locomotive power module, which is characterized in that described
Laminate is GPO-3 laminate.
6. the seperated composite bus bar according to claim 1 suitable for diesel locomotive power module, which is characterized in that described
A side setting flanging of DC master row (1) simultaneously draws plus end (1-1) and negative terminal (1-2) in the side edge of flanging.
7. the seperated composite bus bar according to claim 6 suitable for diesel locomotive power module, which is characterized in that described
Plus end (1-1) and negative terminal (1-2) are provided with two pairs.
8. the seperated composite bus bar according to claim 1 suitable for diesel locomotive power module, which is characterized in that described
Alternating current bus bar (2) includes that the copped wave end phase CHO and three inversions mutually exchange input busbar terminal: the end U, the end V and the end W；The CHO
End is identical with the terminal structure at the end U, the end V and the end W, and uses symmetric design.
9. the seperated composite bus bar according to claim 8 suitable for diesel locomotive power module, which is characterized in that described
A side of alternating current bus bar (2) is provided with flanging, and the end CHO, the end U, the end V and the end W are drawn in the side edge of flanging.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821418083.6U CN209472560U (en) | 2018-08-31 | 2018-08-31 | A kind of seperated composite bus bar suitable for diesel locomotive power module |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821418083.6U CN209472560U (en) | 2018-08-31 | 2018-08-31 | A kind of seperated composite bus bar suitable for diesel locomotive power module |
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| CN209472560U true CN209472560U (en) | 2019-10-08 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109217690A (en) * | 2018-08-31 | 2019-01-15 | 西安中车永电电气有限公司 | A kind of seperated composite bus bar suitable for diesel locomotive power module |
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- 2018-08-31 CN CN201821418083.6U patent/CN209472560U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109217690A (en) * | 2018-08-31 | 2019-01-15 | 西安中车永电电气有限公司 | A kind of seperated composite bus bar suitable for diesel locomotive power module |
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