CN209526661U - A kind of positive and negative bridge parallel converters of high current - Google Patents
A kind of positive and negative bridge parallel converters of high current Download PDFInfo
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- CN209526661U CN209526661U CN201822209064.9U CN201822209064U CN209526661U CN 209526661 U CN209526661 U CN 209526661U CN 201822209064 U CN201822209064 U CN 201822209064U CN 209526661 U CN209526661 U CN 209526661U
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- 230000008878 coupling Effects 0.000 claims abstract description 17
- 238000010168 coupling process Methods 0.000 claims abstract description 17
- 238000005859 coupling reaction Methods 0.000 claims abstract description 17
- 238000009434 installation Methods 0.000 claims abstract description 9
- 239000004593 Epoxy Substances 0.000 claims description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 5
- 229910052782 aluminium Inorganic materials 0.000 claims description 5
- 239000004411 aluminium Substances 0.000 claims description 5
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 230000004927 fusion Effects 0.000 abstract description 7
- 230000006698 induction Effects 0.000 abstract description 2
- 230000000087 stabilizing effect Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
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Abstract
The utility model belongs to technical field of nuclear fusion, specially a kind of positive and negative bridge parallel converters of high current, busbar, direct current branch busbar and alternating current bus bar are always exported including direct current, each direct current always exports 3 direct current branch busbars of installation on busbar, two sides of direct current branch busbar are equipped with thyristor, the row that is flexible coupling is equipped between corresponding thyristor, the row inside that is flexible coupling is equipped with fastp-acting fuse, and fastp-acting fuse is connect with alternating current bus bar.Positive group three-phase bridge converter and negative group three-phase bridge converter are constituted by the way of 6 total bridge arm skew symmetry layouts, existing electromagnetic interference problem when the operation of high current current transformer is effectively reduced, while can effectively avoid the problem that reducing since induction reactance pressure drop bring current stabilizing factor declines with current transformer power factor.
Description
Technical field
The utility model belongs to technical field of nuclear fusion, and in particular to a kind of current transformer.
Background technique
Magnetic confinement nuclear fusion is that one of most important means are studied in fusion, magnetic confinement nuclear fusion using magnetic field realize equity from
The constraint and control of daughter, with plasma research go deep into, need bigger DC power supply provide high energy magnetic field with
Realize plasma physical features deeper into research, further provide theoretical and engineering foundation for fusion business application.Greatly
Current DC power using more, generally takes multiple low currents output converter cabinets in China's electrolysis electroplating industry in structure
Mode in parallel constitutes a high-current dc power supply, and each low current output converter cabinet is identical on electrical structure, Mei Ge little
It is made of in current convertor cabinet three-phase bridge converter, access lines, measurement and protection equipment, and is mostly used greatly on each bridge arm
3-4 thyristor is in parallel, and such power supply is mostly two quadrant power supply.This kind of power supply is applied to exist in nuclear fusion field and be asked as follows
Topic: due to electrical structure, such power supply higher cost, most of electrical equipment utilization rates in power supply are lower；From whole
Power supply architecture is loose from the point of view of on body, and the parallel connection of multiple small converter cabinets increases the complexity of system, while increasing the wind of system
It is dangerous, it is larger compared with multiple footprint additionally, due to the equipment of composition high-current dc power supply；And since it is mostly two quadrant electricity
Source can not cope with the practical application scene of tokamak device load four quadrant running.
Summary of the invention
The purpose of the utility model is to provide a kind of positive and negative bridge parallel converters of high current, can adapt to tokamak dress
Set load four quadrant running condition.
The technical solution of the utility model is as follows:
A kind of positive and negative bridge parallel converters of high current, including two be installed in parallel in the intracorporal direct current of cabinet always export busbar,
Direct current branch busbar and the alternating current bus bar on busbar are always exported set on direct current, each direct current always exports 3 direct currents of installation on busbar
Branch's busbar, direct current branch busbar always export corresponding three groups of formation on busbar 3 in direct current, and every two direct current branch busbar is one
Group；
Described two sides of direct current branch busbar are equipped with thyristor, two in each group direct current branch busbar
In, thyristor on one of direct current branch busbar respectively with the same side for being installed on another direct current branch busbar in the group
The thyristor in face is corresponding by the row's connection that is flexible coupling, and two in same group be flexible coupling arrange it is contrary；The soft company
Inside run in equipped with fastp-acting fuse, the fastp-acting fuse is connect with the alternating current bus bar.
The quantity that each side of direct current branch busbar is equipped with thyristor is 8, and two sides share 16；Every group two
In a direct current branch busbar, another in 8 thyristors of a direct current branch busbar the same side correspondence and same group is straight
8 thyristors of flow branching busbar the same side are arranged contrary by the row's connection that is flexible coupling, being flexible coupling of two sides.
Three circuits in parallel are drawn at the middle part of the alternating current bus bar, in each circuit, are connected in parallel alternating current first
Press mutual inductor, then connect varistor and AC current transformer.
Two direct currents, which always export, is equipped with direct current voltage sensor between busbar, while wherein direct current always exports all the way
On busbar series thermal-sensitive relay, another way direct current always exports busbar series direct current current sensor.
Two-way branch is separated on the alternating current bus bar, after each road connects fastp-acting fuse, two-way side in parallel
To opposite thyristor, radiator in parallel on each thyristor.
The AC voltage transformer is set to the lower end at the cabinet body back side, and the AC current transformer is exhausted using epoxy
Listrium is fixed in cabinet body.
The alternating current bus bar material is aluminium.
The direct current always exports busbar and is made of 2 aluminium rows, and the top of cabinet body is fixed on using insulating epoxy plate.
The direct current always exports busbar and is connected with direct current branch busbar by screw rod.
The beneficial effects of the utility model are as follows:
Positive group three-phase bridge is constituted on the positive and negative bridge converter structure of the high current by the way of 6 total bridge arm skew symmetry layouts
Formula current transformer and negative group three-phase bridge converter, existing electromagnetic interference is asked when effectively reducing the operation of high current current transformer
Topic, while can effectively avoid what decline and current transformer power factor due to induction reactance pressure drop bring current stabilizing factor reduced from asking
Topic；The public alternating current bus bar of positive and negative bridge and DC master row mode are used in structure, significantly reduce current transformer manufacturing cost, economy effect
It is beneficial significant；The characteristics of not working at the same time in structure from positive and negative group of current transformer will just organize current transformer jackshaft in same level
The thyristor on thyristor and negative group current transformer bridge arm on arm shares a fastp-acting fuse, improves utilization rate of equipment and installations simultaneously
Reduce current transformer manufacturing cost；Make the stream of 8 thyristors in parallel in every group of power supply bridge arm using homogenizing plate and resistor disc
Coefficient is greater than 0.85, effectively increases the reliability and current transformer fan-out capability of equipment.
Detailed description of the invention
Fig. 1 is the positive and negative bridge parallel converters structural schematic diagram of high current；
The bridge arm unit structure chart that Fig. 2 designs for this programme；
The positive and negative bridge parallel converters circuit diagram of Fig. 3 high current；
In figure, 1 cabinet body, 2 alternating current bus bars, 3 direct currents always export busbar, 4. direct current branch busbars, 5. thyristors, 6. heat dissipations
Device, 7. fastp-acting fuses, 8. AC voltage transformers, 9. AC current transformers, 10. direct current voltage sensors, 11. direct currents
Flow sensor, 12. are flexible coupling row, 13. varistors, 14. thermal relays, 15. Hall sensors；001-006 is current transformer
6 interior bridge arms.
Specific embodiment
Below by the drawings and the specific embodiments, the invention will be further described.
As shown in Figure 1, total is arranged in cabinet body 1, direct current is always exported there are two busbars 3, and parallel is arranged in cabinet
In body 1, each direct current always exports 3 direct current branch busbars 4 of installation, direct current branch busbar 4 on busbar 3 and always exports busbar in direct current
Corresponding on 3 to form three groups, every two direct current branch busbar 4 is one group.
Thyristor 5 and radiator 6, every group of one of direct current branch are respectively mounted in the side of each direct current branch busbar 4
On busbar 4 install 16 thyristors 5 (two sides, every side 8), respectively with installed on another direct current branch busbar 4 in the group
16 thyristors 5 it is corresponding by 12 connection of row that is flexible coupling, and the row 12 that is flexible coupling of two in same group is contrary.Every
A 12 inside of row that is flexible coupling is respectively mounted fastp-acting fuse 7, and all fastp-acting fuses 7 are mounted on common alternating current bus bar 2.
In pairs due to direct current branch busbar 4, three groups are shared, therefore alternating current bus bar 2 there are three.
As shown in Figure 2, it can be seen that two direct current branch busbars, 4, two rows 12 that are flexible coupling, direct current branch in every group are female
The structure that the fastp-acting fuse 7 and alternating current bus bar 2 installed on the thyristor 5 installed on row 4, the row 12 that is flexible coupling form, we will
Be known as bridge arm unit.By dotted portion in Fig. 1 by two thyristors 5, the direct current branch busbar 4 between thyristor 5 becomes bridge
Arm, for the bridge arm provided in Fig. 1 respectively marked as 001,002 ... 006, corresponding relationship is as shown in Figure 1.
As shown in figure 3, illustrating varistor 13, current transformer 9, direct current voltage sensor 10, straight from circuit structure
The installation of galvanic electricity flow sensor 11.
It is first respectively from three circuits in parallel of the middle part of the alternating current bus bar 2 in every group of bridge arm unit extraction, each circuit
It is first connected in parallel AC voltage transformer 8, then connect varistor 13 and AC current transformer 9.Two direct currents always export mother
Direct current voltage sensor 10 is equipped between row 3, while wherein direct current always exports 3 series thermal-sensitive relay 14 of busbar all the way, it is another
Road direct current always exports 3 series direct current current sensor 11 of busbar.
As shown in figure 3, separating two-way branch on each alternating current bus bar 2, each road connects fast the circuit of bridge arm unit
The contrary thyristor 5 of two-way in parallel after fast fuse 7 (illustrating the fusing resistor of fastp-acting fuse 7 in Fig. 3), each
Radiator 6 (radiator 6 that schematic diagram is made of heat sink resistance and capacitor in Fig. 3) in parallel on thyristor 5.
Alternating current bus bar 2 is connect in such a way that cable nose is fixed using screw rod with external communication inlet wire cable, is realized
The input of energy, alternating current bus bar 2 are manufactured using aluminium product.In order to ensure between alternating current bus bar 2 and external communication inlet wire cable
Be reliably connected, used in 2 junction of alternating current bus bar tin plating to prevent tie point from aoxidizing.Alternating current bus bar 2 is positive and negative bridging simultaneously
Flow device provide input path, by driving mechanism realize the positive and negative bridge method of operation of current transformer switching, effectively reduce cost,
Reduce current transformer volume.
AC voltage transformer 8 measures ac line voltage signal using two single shielded cables, becomes to reduce high current
The interference of electromagnetic field, 8 installation site of AC voltage transformer have fully considered magnetic field factor when flowing device operation, select in cabinet body 1
The lesser position in magnetic field is mounted on the lower position at 1 back side of cabinet body as installation point, AC voltage transformer 8.Alternating current is mutual
Sensor 9 is fixed on inside cabinet body 1 using epoxy insulating board, and alternating current inlet wire cable passes through AC current transformer 9；To ensure to measure
Accuracy, require alternating current inlet wire cable to must be positioned at the center of D.C mutual-inductor 9 in an installation.AC current transformer
9 output signal gives electric current relay for protecting converter equipment when exchanging overcurrent.
Direct current always exports output of the busbar 3 as the positive and negative bridge current transformer of high current, and the final four-quadrant for realizing current transformer is defeated
Out.Direct current always exports busbar 3 and is connected respectively with 6 direct current branch busbars 4 by screw rod.Direct current after public always exports busbar reality
Four-quadrant output is showed, compared to the mode that traditional positive and negative bridge is used separately direct current output busbar, has effectively increased efficiency, saves
The workload of artificial conversion line, while also reducing power supply cost.
Direct current branch busbar 4, thyristor 5, radiator 6 constitute 6 bridge arms 001-006 in current transformer, 6 bridge arms
001-006 is vertically fixedly mounted by the way of three column of two rows in cabinet body 1.16 5 devices of thyristor are installed on each bridge arm
Part is used for AC-DC conversion, and the thyristor 5 on each bridge arm installs 8 thyristors 5 using being left and right symmetrically arranged respectively up and down,
For the equipment safety for ensuring core devices thyristor, each thyristor 5 resistance-capacitance absorption branch (radiator 6) in parallel was used for
Voltage protection.
Claims (9)
1. a kind of positive and negative bridge parallel converters of high current, the direct current being installed in parallel in cabinet body (1) including two always export busbar
(3), the direct current branch busbar (4) and alternating current bus bar (2) on busbar (3) are always exported set on direct current, it is characterised in that: each direct current
3 direct current branch busbars (4) are installed on total output busbar (3), direct current branch busbar (4) always exports busbar (3) on pair in direct current
Three groups of the formation answered, every two direct current branch busbar (4) are one group；
Described (4) two sides of direct current branch busbar are equipped with thyristor (5), two direct current branch busbars in each group
(4) in, thyristor (5) on one of direct current branch busbar (4) is respectively and in the group on another direct current branch busbar (4)
The thyristor (5) of the same side of installation it is corresponding by be flexible coupling row (12) connect, and two in same group are flexible coupling row
(12) contrary；Fastp-acting fuse (7), the fastp-acting fuse (7) and institute are equipped on the inside of the row (12) that is flexible coupling
Alternating current bus bar (2) connection stated.
2. a kind of positive and negative bridge parallel converters of high current as described in claim 1, it is characterised in that: direct current branch busbar (4)
Each side be equipped with thyristor (5) quantity be 8, two sides share 16；In every group of two direct current branch busbars (4)
In, 8 thyristors (5) of direct current branch busbar (4) the same side are corresponding female with another direct current branch in same group
For 8 thyristors (5) of row (4) the same side by row (12) connection that is flexible coupling, the row (12) that is flexible coupling of two sides is contrary.
3. a kind of positive and negative bridge parallel converters of high current as described in claim 1, it is characterised in that: the alternating current bus bar
(2) three circuits in parallel are drawn at middle part, in each circuit, are connected in parallel AC voltage transformer (8) first, then pressure of connecting
Quick resistance (13) and AC current transformer (9).
4. a kind of positive and negative bridge parallel converters of high current as claimed in claim 3, it is characterised in that: two direct currents are total
Export busbar (3) between be equipped with direct current voltage sensor (10), while wherein all the way direct current always export busbar (3) series thermal-sensitive after
On electric appliance (14), another way direct current always exports busbar (3) series direct current current sensor (11).
5. a kind of positive and negative bridge parallel converters of high current as claimed in claim 4, it is characterised in that: the alternating current bus bar
(2) two-way branch is separated on, after each road connects fastp-acting fuse (7), the contrary thyristor of two-way in parallel
(5), radiator (6) in parallel on each thyristor (5).
6. a kind of positive and negative bridge parallel converters of high current as claimed in claim 5, it is characterised in that: the alternating voltage is mutual
Sensor (8) is set to the lower end at cabinet body (1) back side, and the AC current transformer (9) is fixed on cabinet body using epoxy insulating board
(1) in.
7. a kind of positive and negative bridge parallel converters of high current as described in claim 1, it is characterised in that: the alternating current bus bar
(2) material is aluminium.
8. a kind of positive and negative bridge parallel converters of high current as described in claim 1, it is characterised in that: the direct current always exports
Busbar (3) is made of 2 aluminium rows, and the top of cabinet body (1) is fixed on using insulating epoxy plate.
9. a kind of positive and negative bridge parallel converters of high current as described in claim 1, it is characterised in that: the direct current always exports
Busbar (3) is connected with direct current branch busbar (4) by screw rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822209064.9U CN209526661U (en) | 2018-12-27 | 2018-12-27 | A kind of positive and negative bridge parallel converters of high current |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822209064.9U CN209526661U (en) | 2018-12-27 | 2018-12-27 | A kind of positive and negative bridge parallel converters of high current |
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| Publication Number | Publication Date |
|---|---|
| CN209526661U true CN209526661U (en) | 2019-10-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822209064.9U Withdrawn - After Issue CN209526661U (en) | 2018-12-27 | 2018-12-27 | A kind of positive and negative bridge parallel converters of high current |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111384864A (en) * | 2018-12-27 | 2020-07-07 | 核工业西南物理研究院 | Heavy-current positive and negative bridge parallel converter |
-
2018
- 2018-12-27 CN CN201822209064.9U patent/CN209526661U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111384864A (en) * | 2018-12-27 | 2020-07-07 | 核工业西南物理研究院 | Heavy-current positive and negative bridge parallel converter |
| CN111384864B (en) * | 2018-12-27 | 2024-06-11 | 核工业西南物理研究院 | Large-current positive and negative bridge parallel converter |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20191022 Effective date of abandoning: 20240611 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20191022 Effective date of abandoning: 20240611 |
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| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |