CN101478224B - A type bus bar stacking method for large power pulse switch power supply - Google Patents
A type bus bar stacking method for large power pulse switch power supply Download PDFInfo
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- CN101478224B CN101478224B CN 200810231639 CN200810231639A CN101478224B CN 101478224 B CN101478224 B CN 101478224B CN 200810231639 CN200810231639 CN 200810231639 CN 200810231639 A CN200810231639 A CN 200810231639A CN 101478224 B CN101478224 B CN 101478224B
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- copper coin
- rectifier bridge
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- power supply
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Abstract
The invention discloses a method for laminating A-type busbars of a high-power pulse switch power supply. The method is structurally characterized in that four rectifier bridge modules are selected to be connected in parallel and rectified, and two IGBT (insulated gate bipolar translator) modules are selected to output a main circuit; a filter capacitor, a power switching tube or a rectifier, and an inductor or a transformer in the main circuit are placed close to each other; the directions of the components are determined, that is, in design of the high power pulse switch power supply, a capacitor plate, A, B, C, anode phase input copperplate are installed by copperplate lamination, therefore, the wiring is reduced, the influence of the lead inductance and resistance is eliminated, electromagnetic interference is further reduced and the purpose to inhibit electromagnetic interference is achieved.
Description
Technical field
The present invention relates to the folded mutually method that connects of device employing in a kind of large power pulse switch power supply design.
Background technology
Lanzhou heavy ion avcceleration cooling storage ring has up to a hundred to the high power switching power supply (about 80KVA) of magnet power supply usefulness.Under the equal-wattage capacity, Switching Power Supply is higher than linear power supply efficient, and volume is littler, and electromagnetic interference is also more serious.The generation of control high-frequency noise and radiation are the most complicated in the design of Switching Power Supply production system black box art.
As everybody knows, in Switching Power Supply, some signal comprises abundant high fdrequency component, thereby any lead-in wire all may become antenna, the length of lead-in wire and wide resistance and the inductance value that influences it, and then be related to their frequency response, even transmit the lead-in wire of direct current signal, also can introduce RF (radio frequency) signal, circuit is broken down, perhaps this interference signal be radiate once more from contiguous lead-in wire.So here be necessary the characteristic of lead is analyzed explanation.
Lead has the key property that the mapping of electronic circuit and noiseproof feature are exerted an influence, and inductance is one of its most important characteristic, even under the low frequency situation, the induction reactance of lead all may be greater than the resistance of lead itself.
The total inductance of lead is actually internal inductance and external inductors sum, the cross section of lead affects internal inductance, can substitute the internal inductance that round conductor reduces lead by using flat square-section lead, if pass to high-frequency current to lead, because there is skin effect in lead, current concentration flows on the surface of lead, so the internal inductance of lead further reduces, therefore general external inductors is the unique bigger inductance of lead, and the spacing of lead affects external inductors.
Resistance is second very important characteristic of lead, and the shape that changes conductor cross-section can reduce the AC resistance of lead, and the AC resistance of square-section lead is less than the circular section lead, and this is because in the unit cross-sectional area, the surface area of square-section lead is bigger.
Because the AC resistance of the square-section lead that same cross-sectional is long-pending and inductance are less than the AC resistance and the inductance of circular section lead, so rectangular conductor is more suitable for being used as the connection lead in Switching Power Supply.
The noise voltage that produces on the lead is the function of the characteristic impedance of lead, and the characteristic impedance of lead equals:
If seek out best noise characteristic, transmission line must have as far as possible little characteristic impedance, and by following formula as can be known, therefore transmission line should have big electric capacity and low inductance characteristic.
Replace the circular cross-section lead with the square-section lead, or make two leads mutually near the inductance that can reduce lead as far as possible, these two kinds of ways equally also can increase the electric capacity of line.
So optimum distribution wire should be such: wide as far as possible, parallel strap, wherein conductor place another above, and approaching as much as possible.
Such configuration structure has constituted a good low-impedance power distribution wire.
The flat wire inductance value:
In the formula: b-flat wire width .c-flat wire thickness .L-flat wire length.
Two metal material plates, capacitances therebetween:
A-space of a whole page amasss ε-with respect to dielectric constant of air d-spacing
When making thin and long lead into copper coin, the benefit that directly obtains is: accurate infinitely-great plate, and no external inductors, it only has resistance and internal inductance, and it is to increase by the frequency on the skin depth scope, rather than by the increase of the frequency under the thin wire situation.
Summary of the invention
At specificity analysis,, the object of the present invention is to provide large power pulse switch power supply A type method for stacked bus-bar for the generation of control switching high-frequency noise with upper conductor.Promptly in the high power switching power supply design, connect, and adopt copper coin to connect without lead.Replacing lead with copper coin, all is folded mutually and install between the copper coin between copper coin and the copper coin, so be called stack bus bar.This stack bus bar method for designing is to utilize mechanical structure inhibition technology to suppress electromagnetic interference by rational physical layout.
The objective of the invention is to realize by following technical measures:
A kind of method of stacked bus-bar of large power switch power supply is characterized in that:
A. this electric power main circuit is selected the rectification in parallel of 4 rectifier bridge modules and 2 IGBT module outputs for use, and profile and pin definitions are respectively as Fig. 2, shown in Figure 3;
B. this power supply is that 4 rectifier bridge modules and 2 IGBT modules are installed concentratedly on same cooled plate, the parallel connection of 4 rectifier bridge modules, and it exchanges the input and output positive pole and also connects with copper coin;
C. with on electric capacity installation and the negative pole copper coin, with on electric capacity installation and the anodal copper coin, electric capacity is separately fixed on the positive and negative electrode copper coin again with screw;
D. the negative pole of capacitor board is folded mutually up and down with the positive pole of capacitor board, and is middle by the pad post, connects with screw;
E. capacitor board and the cooled plate after the installation after will installing are carried out suit, and the negative pole of capacitor board links to each other by the pad post with the output negative pole of 4 rectifier bridges and the E1 pin of 2 IGBT respectively, and the positive pole of capacitor board links to each other by the pad post with the C2 pin of 2 IGBT.
F, the A of 4 rectifier bridges import copper coin mutually and overlay on the negative pole of capacitor board by the pad post and link to each other with the A of 4 rectifier bridges;
G.4 the B of rectifier bridge imports copper coin mutually and overlays on the copper coin that rectifier bridge A imports mutually by the pad post and link to each other with the B of 4 rectifier bridges;
H.4 the C of rectifier bridge imports copper coin mutually and overlays on the copper coin that rectifier bridge B imports mutually by the pad post and link to each other with the C of 4 rectifier bridges;
J.4 the output cathode copper coin of rectifier bridge overlays on the copper coin that rectifier bridge C imports mutually by the pad post and links to each other with the output cathode of 4 rectifier bridges;
K.4 folded mutually installation between the A phase of a rectifier bridge, B phase, 3 copper coins of C cross streams input and the output cathode copper coin, the centre links to each other with the pad post;
Above-mentioned pad post height is 7～35mm.
Above-mentioned copper coin is 3mm.
Advantage of the present invention is:
1, for reducing the electromagnetic radiation of each current loop, select 4 rectifier bridge modules for use, model is: DF200AA120/160 rectification in parallel and 2 IGBT module output main circuits, filter capacitor in the main circuit, power switch pipe or rectifier, inductance or transformer are placed close, and the direction of definite good these devices, shorten wire length, make the current path between them short as far as possible, to satisfy the big electric current output current of Lanzhou heavy ion avcceleration cooling storage ring big (500A～700A), high-tension demand.
2, the positive pole of the negative pole of capacitor board and capacitor board is respectively two copper coins, and is folded mutually up and down, middle continuous by differing heights pad post.So not only reduce above-mentioned two loop areas but also reduced series resistance and the series inductance on the electric capacity.
3, the present invention adopts the folded mutually connected mode of copper coin, has finished being electrically connected of a plurality of devices, has reduced cabling, and then has reduced electromagnetic interference.
4, the present invention is installed in the Switching Power Supply cabinet as the main body of high power switching power supply, has both reduced the volume of switch cubicle, has reduced interconnector again, has reached the purpose that suppresses electromagnetic interference.
Description of drawings
Fig. 1 is a main circuit diagram of the present invention.
Fig. 2 is a rectifier bridge outline drawing of the present invention.
Fig. 3 is an IGBT outline drawing of the present invention.
Fig. 4 is rectifier bridge module of the present invention, IGBT module and cooled plate installation diagram; The figure right side is the left view of Fig. 5; It on the figure upward view of Fig. 5.
Fig. 5 is the negative pole copper coin of capacitor board of the present invention, and the figure right side is the left view of Fig. 5; It on the figure upward view of Fig. 5.
Fig. 6 is the anodal copper coin of capacitor board of the present invention; The figure right side is the left view of Fig. 6; It on the figure upward view of Fig. 6.
Fig. 7 is electric capacity of the present invention and negative pole copper coin installation diagram; The figure right side is the left view of Fig. 7; It on the figure upward view of Fig. 7.
Fig. 8 is electric capacity of the present invention and anodal copper coin installation diagram; The figure right side is the left view of Fig. 8; It on the figure upward view of Fig. 9.
Among Fig. 9, the upper left corner is the A phase copper coin electric capacity and the anodal copper coin installation diagram of rectifier bridge; The upper right corner is the B phase copper coin of rectifier bridge, the C phase copper coin of lower left corner rectifier bridge, the anodal copper coin of lower right corner rectifier bridge.
Figure 10 is the positive and negative pole plate of electric capacity of the present invention and rectifier bridge module, IGBT module installation diagram, and scheming the right side is the left view of Figure 10; It on the figure upward view of Figure 10.
Figure 11 imports the copper coin installation diagram for rectifier bridge module of the present invention mutually with the rectifier bridge modules A, and the figure right side is the left view of Figure 11; It on the figure upward view of Figure 11.
Figure 12 imports the copper coin installation diagram for rectifier bridge module of the present invention mutually with rectifier bridge module B, and the figure right side is the left view of Figure 12; It on the figure upward view of Figure 12.
Figure 13 imports the copper coin installation diagram for rectifier bridge module of the present invention mutually with rectifier bridge module C, and the figure right side is the left view of Figure 13; It on the figure upward view of Figure 13.
Figure 14 is anodal output of rectifier bridge module of the present invention and the anodal output of rectifier bridge module copper coin installation diagram, and the figure right side is the left view of Figure 14; It on the figure upward view of Figure 14.
Figure 15 is pad post schematic diagram.
Embodiment
In conjunction with the accompanying drawings, the present invention is further described technical scheme again:
Large power pulse switch power supply A type busbar laminating method, electric power main circuit are selected 4 rectifier bridge modules and 2 IGBT module outputs for use, and model is: FF800R12KF4 (see figure 1), profile and pin definitions are respectively as Fig. 2, shown in Figure 3.4 rectifier bridge modules and 2 IGBT modules are installed concentratedly on same cooled plate, the parallel connection of 4 rectifier bridge modules, it exchanges the input and output positive pole also with the copper coin connection, cools off by circulating water device; Rectifier bridge module and IGBT module and cooled plate are installed as shown in Figure 4.Electric capacity is installed in respectively on negative pole copper coin and the anodal copper coin, electric capacity is separately fixed on the positive and negative pole plate with screw; Again that the negative pole of capacitor board is folded mutually up and down, middle by 7mm pad post with the positive pole of capacitor board, connect (seeing Fig. 7, Fig. 8) with screw, so both reduced above-mentioned two loop areas, reduced series resistance and the series inductance on the electric capacity again.Capacitor board negative pole manuscript as shown in Figure 5, the anodal manuscript of capacitor board as shown in Figure 6, electric capacity and negative plate installation as shown in Figure 7, electric capacity and positive/negative plate installation figure are as shown in Figure 8.Then, capacitor board after installing and the cooled plate after the installation are carried out suit, the negative pole of capacitor board links to each other by the pad post with the output negative pole of 4 rectifier bridges and the E1 pin of 2 IGBT respectively.The positive pole of capacitor board links to each other by the pad post with the C2 pin of 2 IGBT, as shown in figure 10.Finished being electrically connected of a plurality of devices with the simplest and the most direct mode like this, reduced cabling, and then reduced electromagnetic interference.Subsequently, the A of 4 rectifier bridges imports mutually on copper coin overlays capacitor board by 14mm pad post the negative pole and links to each other with the A of 4 rectifier bridges, is screwed (seeing Figure 11); The B of 4 rectifier bridges imports copper coin mutually and overlays on the copper coin that rectifier bridge A imports mutually by 21`mm pad post and link to each other with the B of 4 rectifier bridges, is screwed (seeing Figure 12); The C of 4 rectifier bridges imports copper coin mutually and overlays on the copper coin that rectifier bridge B imports mutually by 28mm pad post and link to each other with the C of 4 rectifier bridges, is screwed (seeing Figure 13); The output cathode copper coin of 4 rectifier bridges overlays on the copper coin that rectifier bridge C imports mutually by 35mm pad post and links to each other with the output cathode of 4 rectifier bridges, is screwed (seeing Figure 14); Folded mutually installation the between the A phase of 4 rectifier bridges, B phase, 3 copper coins of C cross streams input and the output cathode copper coin, the middle pad post of using links to each other.
The output cathode of last rectifier bridge links to each other with filter reactor by copper bar with the positive pole of capacitor board.
The stack bus bar structural design of above high power switching power supply has obtained using widely on experimental terminal such as main ring, experimental ring, RIBLL II in the heavy ion avcceleration cooling storage ring of Lanzhou.
Claims (3)
1. large power pulse switch power supply A type busbar laminating method is characterized in that:
A. this power supply selects for use 4 rectifier bridge modules to constitute rectification in parallel and the output of 2 IGBT modules formation single-phase inversions, and wherein, each IGBT module comprises 2 IGBT switching devices;
B. this power supply is that 4 rectifier bridge modules and 2 IGBT modules are installed concentratedly on same cooled plate, and the parallel connection of 4 rectifier bridge modules is between the corresponding ac input end of 4 rectifier bridge modules and connect with copper coin between the output cathode;
C. the negative pole with electric capacity is installed on the negative pole copper coin, and the positive pole with electric capacity is installed on the anodal copper coin again, by screw with capacitor fixing on the positive and negative electrode copper coin;
D. described negative pole copper coin is folded mutually up and down with anodal copper coin, and is middle by the pad post, connects with screw;
E. negative pole copper coin after will installing and anodal copper coin, carry out suit with the cooled plate after the installation, described negative pole copper coin links to each other by the pad post with the output negative pole of 4 rectifier bridges and the emitter of 2 IGBT modules respectively, and described anodal copper coin links to each other by the pad post with the collector electrode of 2 IGBT modules;
F.4 the A of rectifier bridge imports copper coin mutually and overlays on the described negative pole copper coin by the pad post and link to each other with the A of 4 rectifier bridges;
G.4 the B of rectifier bridge imports copper coin mutually and overlays rectifier bridge A by the pad post and import mutually on the copper coin and link to each other with the B of 4 rectifier bridges;
H.4 the C of rectifier bridge imports copper coin mutually and overlays rectifier bridge B by the pad post and import mutually on the copper coin and link to each other with the C of 4 rectifier bridges;
J.4 the output cathode copper coin of rectifier bridge overlays rectifier bridge C by the pad post and imports mutually on the copper coin and link to each other with the output cathode of 4 rectifier bridges;
K.4 A phase, B phase, the C of a rectifier bridge import folded mutually installation the between copper coin and the output cathode copper coin mutually, and the middle pad post of using links to each other.
2. the method for a kind of stacked bus-bar of large power switch power supply according to claim 1, it is characterized in that: above-mentioned pad post height is 7～35mm.
3. the method for a kind of stacked bus-bar of large power switch power supply according to claim 1 is characterized in that: the thick 3mm of being of above-mentioned copper coin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200810231639 CN101478224B (en) | 2008-09-26 | 2008-09-26 | A type bus bar stacking method for large power pulse switch power supply |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200810231639 CN101478224B (en) | 2008-09-26 | 2008-09-26 | A type bus bar stacking method for large power pulse switch power supply |
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| Publication Number | Publication Date |
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| CN101478224A CN101478224A (en) | 2009-07-08 |
| CN101478224B true CN101478224B (en) | 2011-05-18 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102097921A (en) * | 2011-03-16 | 2011-06-15 | 辽宁荣信防爆电气技术有限公司 | Power unit of power device sharing one water-cooling plate with capacitor |
| CN103514982B (en) * | 2013-10-11 | 2017-01-25 | 国家电网公司 | Overlapped busbar applied to high-power tri-level medium-voltage wind power converter |
| US10128625B2 (en) | 2014-11-18 | 2018-11-13 | General Electric Company | Bus bar and power electronic device with current shaping terminal connector and method of making a terminal connector |
| CN113489285B (en) * | 2021-06-29 | 2022-05-27 | 东莞市美一瓦科技有限公司 | Integral structure of high-power boost converter |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5132896A (en) * | 1990-03-30 | 1992-07-21 | Mitsubishi Denki K.K. | Inverter unit with improved bus-plate configuration |
| CN200956554Y (en) * | 2006-07-13 | 2007-10-03 | 北京中益合康电气技术有限公司 | Power unit |
-
2008
- 2008-09-26 CN CN 200810231639 patent/CN101478224B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5132896A (en) * | 1990-03-30 | 1992-07-21 | Mitsubishi Denki K.K. | Inverter unit with improved bus-plate configuration |
| CN200956554Y (en) * | 2006-07-13 | 2007-10-03 | 北京中益合康电气技术有限公司 | Power unit |
Non-Patent Citations (3)
| Title |
|---|
| JP特开2001-86770A 2001.03.30 |
| JP特开平11-313485A 1999.11.09 |
| JP特开平8-19245A 1996.01.19 |
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