CN105099223A

CN105099223A - Inversion chopping composite busbar suitable for high-power electric locomotive power module

Info

Publication number: CN105099223A
Application number: CN201510539179.2A
Authority: CN
Inventors: 张晋芳; 李守蓉; 王雷; 马瑞; 武益民
Original assignee: Yongji Xinshisu Electric Equipment Co Ltd
Current assignee: CRRC Yongji Electric Co Ltd
Priority date: 2015-08-29
Filing date: 2015-08-29
Publication date: 2015-11-25
Anticipated expiration: 2035-08-29
Also published as: CN105099223B

Abstract

The invention relates to an inversion chopping conversion unit, and in particular an inversion chopping composite busbar suitable for a high-power electric locomotive power module. The problems of low reliability, heavy weight and large volume size, high production cost and high production difficulty of the existing inversion chopping conversion unit are solved by the inversion chopping composite busbar. The inversion chopping composite busbar suitable for the high-power electric locomotive power module comprises a busbar part and an IGBT part; the busbar part comprises a U-shaped slot structure formed by a first direct current input busbar, a second direct current input busbar, a first insulation layer, a first alternating current output busbar, a second alternating current output busbar, a third alternating current output busbar, a direct current output busbar, a second insulation layer and a third insulation layer together. The inversion chopping composite busbar is suitable for the high-power electric locomotive power modules.

Description

Be applicable to the inversion copped wave composite bus bar of high-power electric locomotive power module

Technical field

The present invention relates to inversion copped wave converter unit, specifically a kind of inversion copped wave composite bus bar being applicable to high-power electric locomotive power module.

Background technology

Inversion copped wave converter unit is the important component part of high-power electric locomotive power module.Existing inversion copped wave converter unit limit due to self structure, there are the following problems: one, cable is adopted to connect between the main circuit component (IGBT module) of existing inversion copped wave converter unit, cause the stray inductance of its main circuit large, cause its main circuit can produce peak voltage thus in switching process, and peak voltage can impact main circuit component (IGBT module), affect the life-span of main circuit component (IGBT module) thus, thus cause the functional reliability of inversion copped wave converter unit poor.Its two, existing inversion copped wave converter unit is formed by connecting by copper bar by converter module and chopped power unit, causes its integrated level low, causes on the one hand its weight and volume large thus, causes its production cost high on the other hand.Its three, the DC input terminal of existing inversion copped wave converter unit with to exchange and DC output terminal is positioned at same direction, cause its cabling complicated, cause its volume large thus on the one hand, cause its production difficulty large on the other hand.Based on this, be necessary to invent a kind of brand-new inversion copped wave converter unit, to solve the problem that existing inversion copped wave converter unit functional reliability is poor, weight and volume is large, production cost is high, production difficulty is large.

Summary of the invention

The present invention, in order to solve the problem that existing inversion copped wave converter unit functional reliability is poor, weight and volume is large, production cost is high, production difficulty is large, provides a kind of inversion copped wave composite bus bar being applicable to high-power electric locomotive power module.

The present invention adopts following technical scheme to realize: the inversion copped wave composite bus bar being applicable to high-power electric locomotive power module, comprises busbar part and IGBT part;

Described busbar part comprises the U-lag body structure be jointly made up of the first direct current input busbar, the second direct current input busbar, the first insulating barrier, the first interchange output busbar, the second interchange output busbar, the 3rd interchange output busbar, direct current output busbar, the second insulating barrier, the 3rd insulating barrier;

First direct current input busbar, the first insulating barrier, the second direct current input busbar stack gradually together, and the first direct current input busbar, the first insulating barrier, the second direct current input busbar jointly as the bottom surface of U-lag body structure;

First interchange exports busbar, the second insulating barrier, the 3rd exchanges output busbar and stacks gradually together, and the first interchange output busbar, the second insulating barrier, the 3rd exchange and export busbar jointly as a side of U-lag body structure;

Second interchange output busbar, the 3rd insulating barrier, direct current export busbar and stack gradually together, and second exchanges output busbar, the 3rd insulating barrier, direct current output busbar jointly as another side of U-lag body structure;

Described IGBT part comprises the bridge type inverse chopper circuit be jointly made up of the first IGBT module, the second IGBT module, the 3rd IGBT module, the 4th IGBT module, the 5th IGBT module, the 6th IGBT module, the 7th IGBT module, the 8th IGBT module;

First IGBT module and the 5th IGBT module are cascaded, and the first IGBT module and the 5th IGBT module form first inverter bridge leg of bridge type inverse chopper circuit jointly;

Second IGBT module and the 6th IGBT module are cascaded, and the second IGBT module and the 6th IGBT module form second inverter bridge leg of bridge type inverse chopper circuit jointly;

3rd IGBT module and the 7th IGBT module are cascaded, and the 3rd IGBT module and the 7th IGBT module form the 3rd inverter bridge leg of bridge type inverse chopper circuit jointly;

4th IGBT module and the 8th IGBT module are cascaded, and the 4th IGBT module and the 8th IGBT module form the copped wave brachium pontis of bridge type inverse chopper circuit jointly;

Two direct-flow input ends of bridge type inverse chopper circuit input busbar and the second direct current respectively and input busbar and be connected with the first direct current;

Three inverting output terminals of bridge type inverse chopper circuit exchange with first respectively and export busbar, second and exchange and export busbar, the 3rd and exchange and export busbar and be connected;

Copped wave output and the direct current of bridge type inverse chopper circuit export busbar and are connected.

During work, direct current inputs to bridge type inverse chopper circuit by the first direct current input busbar and the second direct current input busbar, DC inverter is become three-phase alternating current by bridge type inverse chopper circuit, and copped wave is carried out to direct current, then export busbar by the first interchange, the second interchange output busbar, the 3rd exchanges output busbar and exported by three-phase alternating current, and export busbar by the direct current output after copped wave by direct current, realize inversion copped wave conversion thus.Based on said process, compared with existing inversion copped wave converter unit, the inversion copped wave composite bus bar being applicable to high-power electric locomotive power module of the present invention passes through to adopt brand new, possesses following advantage: one, cable is no longer adopted to connect between the main circuit component (IGBT module) being applicable to the inversion copped wave composite bus bar of high-power electric locomotive power module of the present invention, but adopt busbar to connect, thus reduce the stray inductance of main circuit, thus avoid main circuit produce peak voltage in switching process, and then effectively ensure that functional reliability is poor.They are two years old, the inversion copped wave composite bus bar being applicable to high-power electric locomotive power module of the present invention is no longer formed by connecting by copper bar by converter module and chopped power unit, but with parallel way, two power cells are integrated, effectively improve integrated level thus, thus effectively reduce weight and volume on the one hand, effectively reduce production cost on the other hand.They are three years old, the inversion copped wave composite bus bar being applicable to high-power electric locomotive power module of the present invention passes through to adopt U-lag body structure, achieve and DC input terminal is separated completely with interchange and DC output terminal, effectively simplify cabling thus, thus effectively reduce volume on the one hand, effectively reduce production difficulty on the other hand.

The present invention is rational in infrastructure, it is ingenious to design, and efficiently solves the problem that existing inversion copped wave converter unit functional reliability is poor, weight and volume is large, production cost is high, production difficulty is large, is applicable to high-power electric locomotive power module.

Accompanying drawing explanation

Fig. 1 is the perspective view of busbar part of the present invention.

Fig. 2 is the planar structure schematic diagram of busbar part of the present invention.

Fig. 3 is the structural representation of IGBT of the present invention part.

Embodiment

Be applicable to the inversion copped wave composite bus bar of high-power electric locomotive power module, comprise busbar part and IGBT part;

Described busbar part comprises the U-lag body structure be jointly made up of the first direct current input busbar S1, the second direct current input busbar S2, the first insulating barrier, the first interchange output busbar S3, the second interchange output busbar S4, the 3rd interchange output busbar S5, direct current output busbar S6, the second insulating barrier, the 3rd insulating barrier;

First direct current input busbar S1, the first insulating barrier, the second direct current input busbar S2 stack gradually together, and the first direct current input busbar S1, the first insulating barrier, the second direct current input busbar S2 jointly as the bottom surface of U-lag body structure;

First interchange exports busbar S3, the second insulating barrier, the 3rd exchanges output busbar S5 and stacks gradually together, and the first interchange output busbar S3, the second insulating barrier, the 3rd exchange and export busbar S5 jointly as a side of U-lag body structure;

Second interchange output busbar S4, the 3rd insulating barrier, direct current export busbar S6 and stack gradually together, and second exchanges output busbar S4, the 3rd insulating barrier, direct current output busbar S6 jointly as another side of U-lag body structure;

Described IGBT part comprises the bridge type inverse chopper circuit be jointly made up of the first IGBT module H1a, the second IGBT module H2a, the 3rd IGBT module H1b, the 4th IGBT module H2b, the 5th IGBT module B1a, the 6th IGBT module B2a, the 7th IGBT module B1b, the 8th IGBT module B2b;

First IGBT module H1a and the 5th IGBT module B1a is cascaded, and the first IGBT module H1a and the 5th IGBT module B1a forms first inverter bridge leg of bridge type inverse chopper circuit jointly;

Second IGBT module H2a and the 6th IGBT module B2a is cascaded, and the second IGBT module H2a and the 6th IGBT module B2a forms second inverter bridge leg of bridge type inverse chopper circuit jointly;

3rd IGBT module H1b and the 7th IGBT module B1b is cascaded, and the 3rd IGBT module H1b and the 7th IGBT module B1b forms the 3rd inverter bridge leg of bridge type inverse chopper circuit jointly;

4th IGBT module H2b and the 8th IGBT module B2b is cascaded, and the 4th IGBT module H2b and the 8th IGBT module B2b forms the copped wave brachium pontis of bridge type inverse chopper circuit jointly;

Two direct-flow input ends of bridge type inverse chopper circuit input busbar S1 and the second direct current respectively and input busbar S2 and be connected with the first direct current;

Three inverting output terminals of bridge type inverse chopper circuit exchange with first respectively and export busbar S3, second and exchange and export busbar S4, the 3rd and exchange and export busbar S5 and be connected;

Copped wave output and the direct current of bridge type inverse chopper circuit export busbar S6 and are connected.

During concrete enforcement, first direct current input busbar S1, the second direct current input busbar S2, first exchange export busbar S3, second exchange export busbar S4, the 3rd exchange export busbar S5, direct current exports busbar S6 and all adopts thickness to be the copper bar of 3mm, and the surface electrical of copper bar is coated with the tin layers that thickness is 5-8 μm.

Claims

1. be applicable to an inversion copped wave composite bus bar for high-power electric locomotive power module, it is characterized in that: comprise busbar part and IGBT part;

Described busbar part comprises the U-lag body structure be jointly made up of the first direct current input busbar (S1), the second direct current input busbar (S2), the first insulating barrier, the first interchange output busbar (S3), the second interchange output busbar (S4), the 3rd interchange output busbar (S5), direct current output busbar (S6), the second insulating barrier, the 3rd insulating barrier;

First direct current input busbar (S1), the first insulating barrier, the second direct current input busbar (S2) stack gradually together, and the first direct current input busbar (S1), the first insulating barrier, the second direct current input busbar (S2) jointly as the bottom surface of U-lag body structure;

First interchange output busbar (S3), the second insulating barrier, the 3rd interchange export busbar (S5) and stack gradually together, and first exchanges output busbar (S3), the second insulating barrier, the 3rd interchange output busbar (S5) jointly as a side of U-lag body structure;

Second interchange output busbar (S4), the 3rd insulating barrier, direct current export busbar (S6) and stack gradually together, and second exchanges output busbar (S4), the 3rd insulating barrier, common another side as U-lag body structure of direct current output busbar (S6);

Described IGBT part comprises the bridge type inverse chopper circuit be jointly made up of the first IGBT module (H1a), the second IGBT module (H2a), the 3rd IGBT module (H1b), the 4th IGBT module (H2b), the 5th IGBT module (B1a), the 6th IGBT module (B2a), the 7th IGBT module (B1b), the 8th IGBT module (B2b);

First IGBT module (H1a) and the 5th IGBT module (B1a) are cascaded, and the first IGBT module (H1a) and the 5th IGBT module (B1a) form first inverter bridge leg of bridge type inverse chopper circuit jointly;

Second IGBT module (H2a) and the 6th IGBT module (B2a) are cascaded, and the second IGBT module (H2a) and the 6th IGBT module (B2a) form second inverter bridge leg of bridge type inverse chopper circuit jointly;

3rd IGBT module (H1b) and the 7th IGBT module (B1b) are cascaded, and the 3rd IGBT module (H1b) and the 7th IGBT module (B1b) form the 3rd inverter bridge leg of bridge type inverse chopper circuit jointly;

4th IGBT module (H2b) and the 8th IGBT module (B2b) are cascaded, and the 4th IGBT module (H2b) and the 8th IGBT module (B2b) form the copped wave brachium pontis of bridge type inverse chopper circuit jointly;

Two direct-flow input ends of bridge type inverse chopper circuit input busbar (S1) and the second direct current respectively and input busbar (S2) and be connected with the first direct current;

Three inverting output terminals of bridge type inverse chopper circuit exchange with first respectively and export busbar (S3), second and exchange and export busbar (S4), the 3rd and exchange and export busbar (S5) and be connected;

Copped wave output and the direct current of bridge type inverse chopper circuit export busbar (S6) and are connected.

2. the inversion copped wave composite bus bar being applicable to high-power electric locomotive power module according to claim 1, it is characterized in that: the first direct current inputs busbar (S1), the second direct current input busbar (S2), the first interchange exports busbar (S3), the second interchange output busbar (S4), the 3rd exchanges output busbar (S5), direct current exports busbar (S6) and all adopts thickness to be the copper bar of 3mm, and the surface electrical of copper bar is coated with the tin layers that thickness is 5-8 μm.