CN101895283B - Direct current quick switching structure of annular large-power thyristor - Google Patents
Direct current quick switching structure of annular large-power thyristor Download PDFInfo
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- CN101895283B CN101895283B CN2010102390174A CN201010239017A CN101895283B CN 101895283 B CN101895283 B CN 101895283B CN 2010102390174 A CN2010102390174 A CN 2010102390174A CN 201010239017 A CN201010239017 A CN 201010239017A CN 101895283 B CN101895283 B CN 101895283B
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- thyristor
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- switching structure
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Abstract
The invention provides a direct current quick switching structure of an annular large-power thyristor, which is characterized by comprising a round disc, a current equalizing stainless steel bus coupler, a thyristor, a quick fuse, a trigger impulse distributor, an insulating stand and a bus coupler, wherein the round disc and the trigger impulse distributor are fixed on the insulating stand; an anode of the thyristor is arranged on the round disc directly, and a cathode of the thyristor is connected with the quick fuse through the current equalizing stainless steel bus coupler; and the trigger impulse distributor is connected with the corresponding thyristor. In the invention, a direct current quick switching structure of the annular large-power thyristor changes the traditional parallel parallel connection mode of the thyristor, annular parallel connection is adopted, wires are led in and out in the centre, each thyristor is connected externally and symmetrically, electric parameters are kept to be consistent, the interruption of external electromagnetism is avoided, and particularly the reliable switching off and stable operation are guaranteed.
Description
Technical field
The present invention relates to a kind of construction of switch, relate in particular to a kind of high-power thyristor direct current quick switching structure.
Background technology
In the DC loop of electric current below 3000A; The thyristor that uses is only single or two parallel runnings; Stray inductance, the electric capacity in single thyristor loop are single, and two available how much symmetrical structures of parallel connection are uniformly distributed with the stray inductance of shunt circuit, electric capacity, make to open to turn-off unanimity.See also shown in Figure 1ly, connect bus outward and distribute and do not wait if two above thyristor parallel connections adopt traditional parallel connection mode certainly will form thyristor, be prone to failure in big electric current disjunction, it is extremely unreliable to work.
Summary of the invention
The purpose of this invention is to provide a kind of direct current quick switching structure of annular large-power thyristor, to solve the problem that exists in the above-mentioned prior art.
To achieve these goals, the present invention adopts following technical scheme:
A kind of direct current quick switching structure of annular large-power thyristor comprises disk, the female couplet of current-sharing stainless steel, thyristor, fast acting fuse, trigger impulse distributor and insulation column; Said disk and trigger impulse distributor are fixed on the insulation column, and the anode of thyristor is installed in disk, and the negative electrode of thyristor connects said fast acting fuse through female couplet of current-sharing stainless steel, and said trigger impulse distributor connects corresponding thyristor.
Said thyristor comprises at least three, the clutch disk of said at least three thyristors symmetry.
Said disk is that thickness is the cast aluminium copper alloy ZL201 disk of 10mm.
The female couplet of said current-sharing stainless steel is the corrosion resistant plate of 1mm for thickness.
Said direct current quick switching structure of annular large-power thyristor also comprises second disk, and said fast acting fuse connects said second disk.
Compared with prior art; A kind of direct current quick switching structure of annular large-power thyristor of the present invention has changed traditional thyristor parallel connection mode, with the annular parallel connection, and center turnover line; Every thyristor links symmetry outward; Electrical quantity is consistent, and does not receive outer electromagnetic interference, special reliable, the operation that guarantees to turn-off stable.
Description of drawings
Fig. 1 is the parallel circuits figure of thyristor in the prior art;
Fig. 2 is the cutaway view of direct current quick switching structure of annular large-power thyristor of the present invention along B-B line among Fig. 4;
Fig. 3 is the cutaway view of direct current quick switching structure of annular large-power thyristor of the present invention along C-C line among Fig. 4;
Fig. 4 direct current quick switching structure of annular large-power thyristor shown in Figure 3 is along the cutaway view of A-A line;
Wherein: 1 is disk; 2 are the female couplet of current-sharing stainless steel; 3 is thyristor; 4 is fast acting fuse; 5 is the trigger impulse distributor; 6 is insulation column.
Embodiment
Below in conjunction with accompanying drawing the present invention is done and to describe in further detail.
See also Fig. 2 to shown in Figure 4, direct current quick switching structure of annular large-power thyristor of the present invention comprises disk 1, current-sharing stainless steel mother couplet 2, thyristor 3, fast acting fuse 4, trigger impulse distributor 5 and insulation column 6.
The anode A of thyristor 3 is installed on the disk 1, and trigger impulse distributor 5 is fixed on the insulation column 6.Fast acting fuse 4 is connected with thyristor 3, plays the overcurrent protection effect, thyristor 3 can be held at short notice like certain overcurrent and does not damage; Trigger impulse distributor 5 triggers corresponding thyristor 3, and trigger impulse distributor 5 is given thyristor 3 start pulse signals, makes thyristor 3 conductings; Fast acting fuse 4 one ends join 2 and connect with thyristor 3 negative electrode K through the current-sharing stainless steel is female, and the other end directly connects with second disk 11.
For the dispersion that prevents thyristor 3 threshold voltages, slope resistance influences conducting and not current-sharing; Not conducting phenomenon individually when serious; Except that improving strong trigger impulse voltage and width; Join 2 and make resistance adjustment in that the thick corrosion resistant plate of thyristor 3 negative electrode string 1mm is female, the parameter of convincing by patient analysis that remedies thyristor 3 is disperseed, and reaches the current stabilizing factor more than 0.9.The stable operation of thyristor high-speed switch, reliable turn-off.
When the thyristor parallel connection was used, uneven if electric current distributes, the thyristor that then shunting is bigger just was prone to surpass its rated current, and unbalanced degree is bigger, and the effect of parallel connection is just poorer.The arrangement of thyristor is very important to current-sharing with the position of drawing bus, and this mainly is that the difference of parallelly connected each branch impedance of thyristor is very big to the influence of current balance degree because the on state resistance value of thyristor device is very little; In the bigger occasion of operating current, be configured in the plane like parallelly connected thyristor, because the thyristor that the influence of magnetic field and impedance loop is arranged on the diverse location just has different current values; And it is relevant with the position of drawing bus; In order to obtain current-sharing preferably, and reduce the influence of these factors, so the present invention adopts loop configuration; The thyristor of parallel branch is made axial symmetry by circumference to distribute; The starting point of every branch road and terminal point all are connected on the center of circle of two ends circumference, make every branch road all symmetrical fully, and make the distributed inductance of each branch road close with conductor resistance.A kind of direct current quick switching structure of annular large-power thyristor of the present invention has changed traditional thyristor parallel connection mode; With the annular parallel connection; Center turnover line, every thyristor links symmetry outward, and electrical quantity is consistent; And do not receive outer electromagnetic interference, special reliable, the operation that guarantees to turn-off stable.
Claims (5)
1. a direct current quick switching structure of annular large-power thyristor is characterized in that, comprises disk (1), female (2), thyristor (3), fast acting fuse (4), trigger impulse distributor (5) and the insulation column (6) of joining of current-sharing stainless steel; Said disk (1) and trigger impulse distributor (5) are fixed on the insulation column (6); The anode of thyristor (3) is installed in disk (1); The negative electrode of thyristor (3) connects said fast acting fuse (4) through female join (2) of current-sharing stainless steel, and said trigger impulse distributor (5) connects corresponding thyristor (3); Thyristor (3) is distributed on the disk (1) by the circumference axial symmetry of disk (1), and with the annular parallel connection, disk (1) center turnover line, every thyristor links symmetry outward, and electrical quantity is consistent.
2. direct current quick switching structure of annular large-power thyristor according to claim 1, it is characterized in that: said thyristor (3) comprises at least three, the clutch disk (1) of said at least three thyristors (3) symmetry.
3. direct current quick switching structure of annular large-power thyristor according to claim 1, it is characterized in that: said disk (1) is the cast aluminium copper alloy ZL201 disk of 10mm for thickness.
4. direct current quick switching structure of annular large-power thyristor according to claim 1 is characterized in that: said current-sharing stainless steel is female, and to join (2) be the corrosion resistant plate of 1mm for thickness.
5. direct current quick switching structure of annular large-power thyristor according to claim 1, it is characterized in that: said direct current quick switching structure of annular large-power thyristor also comprises second disk (11), said fast acting fuse (4) connects said second disk (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102390174A CN101895283B (en) | 2010-07-28 | 2010-07-28 | Direct current quick switching structure of annular large-power thyristor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010102390174A CN101895283B (en) | 2010-07-28 | 2010-07-28 | Direct current quick switching structure of annular large-power thyristor |
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| Publication Number | Publication Date |
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| CN101895283A CN101895283A (en) | 2010-11-24 |
| CN101895283B true CN101895283B (en) | 2012-02-01 |
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| DE2709681C2 (en) * | 1977-03-05 | 1979-04-19 | Walter Dr. 4270 Dorsten Schade | Electrically controlled, brushless electric machine |
| CN100372126C (en) * | 2005-11-25 | 2008-02-27 | 清华大学 | High-frequency thyratron transistor |
| CN201207393Y (en) * | 2008-05-30 | 2009-03-11 | 中国电力科学研究院 | Large power self-cooling thyratron transistor valve and vehicle for mounting |
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