CN207166366U - Suitable for train power supply four-quadrant power model and composite bus bar - Google Patents
Suitable for train power supply four-quadrant power model and composite bus bar Download PDFInfo
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- CN207166366U CN207166366U CN201721141747.4U CN201721141747U CN207166366U CN 207166366 U CN207166366 U CN 207166366U CN 201721141747 U CN201721141747 U CN 201721141747U CN 207166366 U CN207166366 U CN 207166366U
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Abstract
The utility model discloses one kind to be applied to train power supply four-quadrant power model, including water cooling substrate（2）, the water cooling substrate（2）Lower surface is installed by driving plate installation frame（4）, upper surface installation IGBT four-quadrant power models（1）, the water cooling substrate（2）Upper surface rear portion is installed by insulating supporting seat（5）, the IGBT four-quadrants power model（1）Outer installation composite bus bar（3）；The composite bus bar（3）By positive busbar（3‑1）, negative busbar（3‑2）With alternating current bus bar A（3‑31）, alternating current bus bar B（3‑32）Laminate synthesis.This programme solves the problems, such as that current-carrying is small when main circuit uses generic connectivity mode, big, temperature rise, circuit reliability difference is lost；System bulk is efficiently reduced, weight, meets the highdensity development of locomotive heavy duty；Significantly reduce design cost, improve the competitiveness of product in market.
Description
Technical field
High-power electric locomotive and high speed motor car power model are the utility model is related to, is specially that a kind of train that is applied to supplies
Electric four-quadrant power model and composite bus bar.
Background technology
With the development of Chinese Railway heavy duty technology, on the one hand need to continue to lift up single-machine capacity, on the other hand protect again
The volume of unit power is held or reduces, this just needs to optimize system architecture, to meet that high pressure, high current draw AuCT
High speed development.Because IGBT power devices are influenceed in switching process by stray inductance, very high peak voltage can be produced, it is this
Spike, it can make to increase by the electric current of device, ultimately result in device overheat, or even make IGBT out of control sometimes and exceed the volume of device
Determine safety operation area and damage.
Current four-quadrant converter unit integrated level is not high, and bronze medal thickness is big, and volume weight is big, and alternating current-direct current terminal uses copper
Board is connected with current transformer side, and stray inductance is big, and cabling connected mode brings difficulty, is not easy to installation maintenance.To solve this
Kind of problem, generally use composite bus bar carry out the electrical connection between power device, and it is into flat by main circuit busbar
Shape, and be stacked together according to certain order that stacks, between every layer the material of high insulation resistance must be used to isolate.So not
The requirement of low sense is only met, even more improves the reliability of IGBT work.
The technical scheme of prior art is critical component such as IGBT, Support Capacitor, absorbing circuit, output end in major loop
Electrical connection generally use cable, copper bar connection between son row etc..
The shortcomings that prior art：1st, connected between main circuit component using cable or copper bar, loop stray inductance is big, can make
Into due to voltage spikes, power device is easily damaged, circuit reliability is poor.2nd, installation inconvenience, structure is too fat to move, takes up space big.3rd, hinder
It is anti-it is high, current-carrying capacity is small, loss is big, weak heat-dissipating, temperature rise.
The content of the invention
The utility model devises one kind and is applied to high-power motorcoach train power supply four-quadrant power model and composite bus bar,
To meet product high frequency small, intellectuality, the requirement of high reliability, high economy.
The utility model adopts the following technical scheme that realization：
One kind is applied to train power supply four-quadrant power model, including water cooling substrate, under the water cooling substrate
Driving plate installation frame is installed on surface, IGBT four-quadrant power models are installed in upper surface, behind the water cooling substrate upper surface
Insulating supporting seat is installed in portion, and composite bus bar is installed outside the IGBT four-quadrants power model.
The composite bus bar is laminated and synthesized by positive busbar, negative busbar and alternating current bus bar A, alternating current bus bar B, positive busbar, negative mother
Row and alternating current bus bar A, alternating current bus bar B are using copper bar thick 4mm, the tin layers of copper bar surface electrolysis 8 μ m-thicks of plating；The positive pole
By insulator separation between row, negative busbar and alternating current bus bar A, alternating current bus bar B, wherein, alternating current bus bar A and alternating current bus bar B are simultaneously
Row are located at negative busbar surface；The positive busbar is extended with two anode connection terminals, as positive busbar lead-out terminal S1（DC+）, institute
State negative busbar and be extended with two negative pole connection ends, as negative busbar lead-out terminal S2（DC–）, the alternating current bus bar A is extended with one
Individual exchange connection end, as exchange A phase input terminals S3（A）, the alternating current bus bar B be extended with one exchange connection end, as
Alternating-current B phase input terminal S4（B）.
The composite bus bar is followed successively by positive busbar lead-out terminal S1 from left to right（DC+）, negative busbar lead-out terminal S2
（DC–）, exchange A phase input terminals S3（A）, alternating-current B phase input terminal S4（B）, negative busbar lead-out terminal S2（DC–）, positive busbar
Lead-out terminal S1（DC+）, and be installed on insulating supporting seat.
The water cooling substrate both sides are installed by the left protection for protecting IGBT four-quadrants power model and composite bus bar
Support and right protective cradle.
This programme arranges suitable for even car power concentration EMUs and supplies four-quadrant power model, and main circuit principle is as shown in Figure 1：
H1 forms two with B1, H2 with B2 and exchanges input bridge arm S (A), S (B) respectively, is electrically connected with current transformer by composite bus bar
Connect, under Auxiliary Control Element ACU control, one piece of driving plate drives an IGBT to carry out opening shut-off, train power supply unit
Using friendship-straight pattern conversion, DC output end access power supply system of train control device, each train power supply unit power output
300kW, two train power supply unit Parallel opertation power of single-unit locomotive are not less than 600kW.
This programme has designed and produced corresponding composite bus bar, applies in power concentration motor train unit train output power module
In, as shown in Figure 2：Appearance and size is 389 × 399 × 23.5mm（Length × width × height）.
According to circuit theory, Support Capacitor busbar is divided into two layers, i.e. "+" and "-" as input, and this composite bus bar uses
Copper bar thick 4mm, 8 μm of copper bar surface electrolytic tinning（100% tin）, maximum alternating current is 1300A, and direct-current working volts are
600V, it is 3200V that insulation is pressure-resistant.Minimum creep distance：>=50mm, minimum electric clearance：≥23mm.
As shown in Figure 3,4, composite bus bar is arranged on IGBT units, and it is left that left and right protective cradle is arranged on IGBT power cells
Right both sides, protective action is played to IGBT power cells and composite bus bar.S1 be DC+, S2 be DC-, S3 be exchange A phases, S4 be friendship
B phases are flowed, all lead-out terminals of composite bus bar are fixed on insulating supporting seat, are easy to outside terminal to install.Overall inductance is less than
50nH, temperature rise are less than 30K, meet the low inductance of main circuit, the requirement of temperature rise, improve the reliability of IGBT work.Module direct current
Part is connected by S1, S2 of composite bus bar with the Support Capacitor of outside, the bolt that connection specification is M10, module AC portion
It is connected by S3, S4 of composite bus bar with the Support Capacitor of outside.
What the technical program was brought has the beneficial effect that：
1st, solve that current-carrying when main circuit uses generic connectivity mode is small, loss is big, temperature rise, circuit reliability difference are asked
Topic.
2nd, system bulk is efficiently reduced, weight, meets the highdensity development of locomotive heavy duty.
3rd, significantly reduce design cost, improve the competitiveness of product in market.
Brief description of the drawings
Fig. 1 represents composite bus bar main circuit schematic diagram.
Fig. 2 represents composite bus bar structural representation.
Fig. 3 represents to be applied to train power supply four-quadrant power model scheme of installation.
Fig. 4 represents to be applied to train power supply four-quadrant power module architectures schematic diagram.
In figure：1---IGBT four-quadrant power models, 2--- water cooling substrates, 3--- composite bus bars, 4--- driving plates
Installation frame, 5--- insulating supporting seats, 3-1--- positive busbars, 3-2--- negative busbars, 3-31--- alternating current bus bars A, 3-32--- friendship
Flow busbar B, 3-11--- anode connection terminal, 3-12--- negative poles connection end, 3-13--- exchanges connection end；The left protection branch of 4-1---
Frame, the right protective cradles of 4-2---.
Embodiment
Specific embodiment of the utility model is described in detail below in conjunction with the accompanying drawings.
As shown in Figure 3,4, a kind of to be applied to train power supply four-quadrant power model, including water cooling substrate 2, water cooling dissipates
The lower surface of hot substrate 2 installation driving plate installation frame 4, upper surface installation IGBT four-quadrants power model 1, water cooling substrate 2
Upper surface rear portion installation insulating supporting seat 5, IGBT four-quadrants power model 1 installs composite bus bar 3 outside.Composite bus bar 3 from a left side to
The right side is followed successively by positive busbar lead-out terminal S1（DC+）, negative busbar lead-out terminal S2（DC–）, exchange A phase input terminals S3（A）, exchange
B phase input terminals S4（B）, negative busbar lead-out terminal S2（DC–）, positive busbar lead-out terminal S1（DC+）, and it is installed on insulating supporting
On seat 5；The both sides of water cooling substrate 2 are installed by the left protective cradle for protecting IGBT four-quadrants power model 1 and composite bus bar 3
4-1 and right protective cradle 4-2.
As shown in Fig. 2 composite bus bar 3 is by positive busbar 3-1, negative busbar 3-2 and alternating current bus bar A3-31, alternating current bus bar B3-32
Synthesis is laminated, positive busbar 3-1, negative busbar 3-2 and alternating current bus bar A3-31, alternating current bus bar B3-32 are using copper bar thick 4mm, copper
Arrange the tin layers of surface electrolysis 8 μ m-thicks of plating；Between positive busbar 3-1, negative busbar 3-2 and alternating current bus bar A3-31, alternating current bus bar B3-32
By insulator separation, wherein, alternating current bus bar A3-31 and alternating current bus bar B3-32 are located at negative busbar 3-2 surfaces side by side；Positive busbar
3-1 is extended with two anode connection terminal 3-11, as positive busbar lead-out terminal S1（DC+）, the negative busbar 3-2 is extended with two
Negative pole connection end 3-12, as negative busbar lead-out terminal S2（DC–）, the alternating current bus bar A3-31 be extended with one exchange connection
3-13 is held, as exchange A phase input terminals S3（A）, the alternating current bus bar B3-32 be extended with one exchange connection end 3-13, make
For alternating-current B phase input terminal S4（B）.
It is good using integrated level from practical application request, the small high pressure resistant high insulation compound mother of four-quadrant of stray inductance
Row, mainly solves problems with：
1st, solve main circuit cable or copper bar stray inductance is big, power device is easily damaged, and circuit reliability difference is asked
Topic.
2nd, integrated level is high, reduces system power element number, reduces system bulk, weight and noise.
3rd, alternating current-direct current terminal is electrically connected by busbar and converter system, is more beneficial for power model and current transformer electricity
Make line leave with rage, it is convenient for installation and maintenance.
It should be noted last that above example is only unrestricted to illustrate the technical solution of the utility model, to the greatest extent
Pipe is described in detail with reference to the utility model embodiment, it will be understood by those within the art that, it is new to this practicality
The technical scheme of type is modified or equivalent substitution, without departure from the spirit and scope of the technical solution of the utility model, its
It all should cover in claims.
Claims (3)
1. one kind is applied to train power supply four-quadrant power model, including water cooling substrate（2）, it is characterised in that：The water
Cold heat-radiating substrate（2）Lower surface is installed by driving plate installation frame（4）, upper surface installation IGBT four-quadrant power models（1）, it is described
Water cooling substrate（2）Upper surface rear portion is installed by insulating supporting seat（5）, the IGBT four-quadrants power model（1）Outer installation is multiple
Close busbar（3）；
The composite bus bar（3）By positive busbar（3-1）, negative busbar（3-2）With alternating current bus bar A（3-31）, alternating current bus bar B（3-32）
Laminate synthesis, positive busbar（3-1）, negative busbar（3-2）With alternating current bus bar A（3-31）, alternating current bus bar B（3-32）It is thick using 4mm
Copper bar, copper bar surface electrolysis plating 8 μ m-thicks tin layers；The positive busbar（3-1）, negative busbar（3-2）With alternating current bus bar A（3-
31）, alternating current bus bar B（3-32）Between by insulator separation, wherein, alternating current bus bar A（3-31）With alternating current bus bar B（3-32）And
Row are located at negative busbar（3-2）Surface；The positive busbar（3-1）It is extended with two anode connection terminals（3-11）, it is defeated as positive busbar
Go out terminal S1, the negative busbar（3-2）It is extended with two negative pole connection ends（3-12）, it is described as negative busbar lead-out terminal S2
Alternating current bus bar A（3-31）It is extended with an exchange connection end（3-13）, as exchange A phase input terminals S3, the alternating current bus bar B
（3-32）It is extended with an exchange connection end（3-13）, as alternating-current B phase input terminal S4；
The composite bus bar（3）It is defeated that positive busbar lead-out terminal S1, negative busbar lead-out terminal S2, exchange A phases are followed successively by from left to right
Enter terminal S3, alternating-current B phase input terminal S4, negative busbar lead-out terminal S2, positive busbar lead-out terminal S1, and be installed on insulating supporting
Seat（5）On；
The water cooling substrate（2）Install for protecting IGBT four-quadrant power models both sides（1）And composite bus bar（3）A left side
Protective cradle（4-1）With right protective cradle（4-2）.
A kind of 2. composite bus bar suitable for train power supply four-quadrant power model, it is characterised in that：Composite bus bar（3）By positive pole
Row（3-1）, negative busbar（3-2）With alternating current bus bar A（3-31）, alternating current bus bar B（3-32）Laminate synthesis, the positive busbar（3-1）、
Negative busbar（3-2）With alternating current bus bar A（3-31）, alternating current bus bar B（3-32）Between by insulator separation, wherein, alternating current bus bar A
（3-31）With alternating current bus bar B（3-32）It is located at negative busbar side by side（3-2）Surface；The positive busbar（3-1）It is extended with two positive poles
Connection end（3-11）, as positive busbar lead-out terminal S1, the negative busbar（3-2）It is extended with two negative pole connection ends（3-12）,
As negative busbar lead-out terminal S2, the alternating current bus bar A（3-31）It is extended with an exchange connection end（3-13）, as exchange A
Phase input terminal S3, the alternating current bus bar B（3-32）It is extended with an exchange connection end（3-13）, as alternating-current B phase input
Sub- S4；
The composite bus bar（3）It is defeated that positive busbar lead-out terminal S1, negative busbar lead-out terminal S2, exchange A phases are followed successively by from left to right
Enter terminal S3, alternating-current B phase input terminal S4, negative busbar lead-out terminal S2, positive busbar lead-out terminal S1.
3. the composite bus bar according to claim 2 suitable for train power supply four-quadrant power model, it is characterised in that：Just
Busbar（3-1）, negative busbar（3-2）With alternating current bus bar A（3-31）, alternating current bus bar B（3-32）Using copper bar thick 4mm, copper bar
The tin layers of surface electrolysis 8 μ m-thicks of plating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721141747.4U CN207166366U (en) | 2017-09-07 | 2017-09-07 | Suitable for train power supply four-quadrant power model and composite bus bar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721141747.4U CN207166366U (en) | 2017-09-07 | 2017-09-07 | Suitable for train power supply four-quadrant power model and composite bus bar |
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| Publication Number | Publication Date |
|---|---|
| CN207166366U true CN207166366U (en) | 2018-03-30 |
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ID=61720702
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721141747.4U Active CN207166366U (en) | 2017-09-07 | 2017-09-07 | Suitable for train power supply four-quadrant power model and composite bus bar |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109494993A (en) * | 2018-08-29 | 2019-03-19 | 西安中车永电电气有限公司 | A kind of high-voltage large current mixed type SiC-IGBT applying unit |
-
2017
- 2017-09-07 CN CN201721141747.4U patent/CN207166366U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109494993A (en) * | 2018-08-29 | 2019-03-19 | 西安中车永电电气有限公司 | A kind of high-voltage large current mixed type SiC-IGBT applying unit |
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