CN101499714A - Input rectifying/filtering circuit capacitor board for large power switch electric power - Google Patents
Input rectifying/filtering circuit capacitor board for large power switch electric power Download PDFInfo
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- CN101499714A CN101499714A CNA2008102320460A CN200810232046A CN101499714A CN 101499714 A CN101499714 A CN 101499714A CN A2008102320460 A CNA2008102320460 A CN A2008102320460A CN 200810232046 A CN200810232046 A CN 200810232046A CN 101499714 A CN101499714 A CN 101499714A
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Abstract
The invention relates to a B-typed capacitance plate which inputs a rectifier/filter circuit in a large-power switch power. The structure of the capacitance plate is characterized in that the capacitance cathode plate is an inverted-concave shape, wherein, the upper half part of the capacitance cathode plate is provided with a C2 groups of parallel capacitors, the left lower part thereof is connected with the output cathode of a rectifier bridge, the right lower half part thereof is connected with the IGBT cathode; the capacitance anode plate is a hilt-shape; the upper half part thereof is provided with C1 groups of capacitors which have the same quantity with the C2 group; the left folding part of the capacitance anode plate is connected with a filter reactor, the right lower half part thereof is connected with the IGBT anode; the anode, the cathode and the 'grounding' wire of the capacitor are respectively made of copper plates which are 3mm thick and connected with each other by a cushion column; and the spacing among the anode copper plate, the 'grounding' copper plate and the cathode copper plate is respectively 4mm. The arrangement of the B-typed capacitance plate minishes the electromagnetic interference, leads the area surrounded by the current loop of the input rectifier/filter circuit to be the smallest, and leads the capacitors to be arranged symmetrically in the radioactive mode at two sides of the loop from a ripple current source.
Description
Technical field
The present invention relates to input rectifying/filtering circuit Type B capacitor board in a kind of high power switching power supply.
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 equal-wattage, 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, and wherein the design of capacitor board is the key of high power switching power supply in the rectifying/filtering circuit.In order to overcome the weak point of existing linear power supply, we have designed input rectifying/filtering circuit (A) type capacitor board and input rectifying/filtering circuit (B) type capacitor board for high power switching power supply.The main distinction of rectifying/filtering circuit (B) type capacitor board and input rectifying/filtering circuit (A) type capacitor board is: because rectifier output voltage is higher, one group of filter capacitor does not reach requirement of withstand voltage, so use with two groups of capacitances in series.
Summary of the invention
The object of the present invention is achieved like this:
Input rectifying/filtering circuit Type B capacitor board in a kind of high power switching power supply, contain electric capacity negative plate and capacitance cathode plate, it is characterized in that the electric capacity negative plate is is shaped as down concave character type, the first half is equipped with C2 group shunt capacitance, left side Lower Half links to each other with the rectifier bridge output negative pole, and right Lower Half links to each other with the IGBT negative pole; The capacitor board positive pole is the hilt type, it is identical with electric capacity negative plate C2 group that the first half is equipped with C1 group electric capacity number, the left side is turned up part and is linked to each other with filter reactor, the right Lower Half links to each other with IGBT is anodal, the electric capacity positive and negative electrode and " " line is the thick copper coin of 3mm, middle link to each other by the pad post, just and " " and the negative pole copper coin between spacing be 4mm.
The beneficial effect of advantage of the present invention and generation is:
1, the positive pole of the negative pole of input rectifying/filtering circuit Type B capacitor board and capacitor board is respectively two copper coins in the high power switching power supply, and is folded mutually up and down, middle continuous by the pad post.The positive and negative pole plate of electric capacity is furnished with C1, C2 group shunt capacitance, and every group is 18 electric capacity.This purpose of design is to reduce electromagnetic interference, makes the area minimum that current loop surrounded of input rectifying/filtering circuit, allows electric capacity begin to be " radioactivity symmetric arrangement " from the ripple current source on the loop both sides.The electric capacity positive and negative electrode and " " between spacing be 4mm, folded mutually up and down, middlely link to each other by the pad post.So not only reduce the current loop area but also reduced series resistance and the series inductance on the electric capacity.
2, this rectifying/filtering circuit adopts the form that two groups of electric capacity parallel connections are connected again, and this rectifying/filtering circuit installation form design is ingenious, in Lanzhou heavy ion avcceleration cooling storage ring, gives operational excellence in the high power switching power supply of controlling cancer line magnet power supply usefulness.
Description of drawings
Fig. 1 is the high power switching power supply main circuit diagram.
Fig. 2 is an electric capacity negative plate schematic diagram of the present invention.
Fig. 3 is a capacitance cathode plate schematic diagram of the present invention.
Fig. 4 be the present invention " " schematic diagram.
Fig. 5 is C2 group electric capacity of the present invention and negative plate scheme of installation.
Fig. 6 is C1 group electric capacity of the present invention and positive plate scheme of installation.
Fig. 7 is the present invention ground and C2 group electric capacity and negative plate scheme of installation.
Fig. 8 is capacitor board installation figure of the present invention.
Embodiment
Below, in conjunction with the accompanying drawings, technical solution of the present invention is described in any further:
Input rectifying/filtering circuit Type B capacitor board in a kind of high power switching power supply, the electric capacity positive/negative plate and " " plate is the thick copper coin of 3mm.The electric capacity negative plate is and is shaped as the (see figure 2) of falling the concave character type, and the first half is equipped with 18 10000uF/400VDC shunt capacitances of C2 group, and electric capacity is outer through 90mm, with screw electric capacity is separately fixed on the negative plate, as shown in Figure 5.Electric capacity negative plate left side Lower Half links to each other with main circuit rectifier bridge output negative pole, and right Lower Half links to each other with the IGBT negative pole; The capacitor board positive pole is hilt type (see figure 3), and the first half is installed the C1 group and is furnished with 18 10000uF/400VDC shunt capacitance (see figure 6)s, and the left side is turned up part and linked to each other with filter reactor, and the right Lower Half links to each other with the IGBT collector electrode.To again " " install with the C2 group electric capacity negative plate after installing, as shown in Figure 7.At last with mounted C1 group capacitance cathode plate with " " install with the C2 group electric capacity negative plate after installing, be connected (see figure 8) by 4mm pad post with screw in the middle of electric capacity negative plate and the capacitance cathode plate.
Claims (1)
1, input rectifying/filtering circuit Type B capacitor board in a kind of high power switching power supply, contain electric capacity negative plate and capacitance cathode plate, it is characterized in that the electric capacity negative plate is is shaped as down concave character type, the first half is equipped with C2 group shunt capacitance, left side Lower Half links to each other with the rectifier bridge output negative pole, and right Lower Half links to each other with the IGBT negative pole; The capacitor board positive pole is the hilt type, it is identical with electric capacity negative plate C2 group that the first half is equipped with C1 group electric capacity number, the left side is turned up part and is linked to each other with filter reactor, the right Lower Half links to each other with IGBT is anodal, the electric capacity positive and negative electrode and " " line is the thick copper coin of 3mm, middle link to each other by the pad post, just and " " and the negative pole copper coin between spacing be 4mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008102320460A CN101499714A (en) | 2008-10-14 | 2008-10-14 | Input rectifying/filtering circuit capacitor board for large power switch electric power |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008102320460A CN101499714A (en) | 2008-10-14 | 2008-10-14 | Input rectifying/filtering circuit capacitor board for large power switch electric power |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101499714A true CN101499714A (en) | 2009-08-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008102320460A Pending CN101499714A (en) | 2008-10-14 | 2008-10-14 | Input rectifying/filtering circuit capacitor board for large power switch electric power |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101499714A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10707768B2 (en) | 2013-05-22 | 2020-07-07 | Abb Schweiz Ag | Power module for medium and high-voltage frequency converter and frequency converter comprising same |
-
2008
- 2008-10-14 CN CNA2008102320460A patent/CN101499714A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10707768B2 (en) | 2013-05-22 | 2020-07-07 | Abb Schweiz Ag | Power module for medium and high-voltage frequency converter and frequency converter comprising same |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20090805 |