CN110350803A - A kind of main circuit structure can solve multiple power electronic devices parallel current-sharing problems - Google Patents
A kind of main circuit structure can solve multiple power electronic devices parallel current-sharing problems Download PDFInfo
- Publication number
- CN110350803A CN110350803A CN201910617735.1A CN201910617735A CN110350803A CN 110350803 A CN110350803 A CN 110350803A CN 201910617735 A CN201910617735 A CN 201910617735A CN 110350803 A CN110350803 A CN 110350803A
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- China
- Prior art keywords
- power electronic
- main circuit
- electronic devices
- copper bar
- multiple power
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 19
- 229910052802 copper Inorganic materials 0.000 claims abstract description 19
- 239000010949 copper Substances 0.000 claims abstract description 19
- 229910000831 Steel Inorganic materials 0.000 claims description 19
- 239000010959 steel Substances 0.000 claims description 19
- 238000009434 installation Methods 0.000 claims description 14
- 238000002788 crimping Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 11
- 238000000034 method Methods 0.000 description 4
- 230000005611 electricity Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of AC power input into DC power output; Conversion of DC power input into AC power output
- H02M7/003—Constructional details, e.g. physical layout, assembly, wiring or busbar connections
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/50—Arrangements for eliminating or reducing asymmetry in polyphase networks
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Rectifiers (AREA)
Abstract
A kind of main circuit structure can solve multiple power electronic devices parallel current-sharing problems, including incoming-line busbar and outgoing line busbar, incoming-line busbar pass through round copper bar and connect with element rows, and outgoing line busbar passes through round copper bar and fast molten row's connection.The increase of round copper bar is so that the power electronic element on entire rectifier arm is distributed symmetrically uniformly.In the present invention, each parallel branch current path length is identical, increases the operational efficiency for improving rectifier cabinet, reduces the loss of each link, energy-saving to entire production system to have remarkable effect, is a kind of very strong main circuit structure in parallel of practicability.
Description
Technical field
The present invention relates to metallurgical technical field of electric power, in particular to it is in parallel to can solve multiple power electronic devices for one kind
The main circuit structure of flow problem.
Background technique
With industrial progress and the large-scale application of power electronic technique, all trades and professions are to heavy DC unsteady flow
The demand of device is higher and higher, specified running current is also increasing.It is limited by power electronic devices technique and manufacturing technology,
The pressure resistance of single power electronic devices and resistance to flow horizontal have been difficult have hasty breaching in the short time again, therefore how in existing device
On part capacitance grade, the output capacity of further expansion electronic power convertor equipment becomes an important topic.In practical electricity
In the design of road, the expansion of rated current capacity is usually realized using the method for multiple power electronic devices parallel shunts.Thus
The i.e. equal flow problem of current balance type of parallel branch is brought simultaneously, this often will affect the parameter designing of circuit, and in reality
The major reason that device often damages in operation, how simply and effectively to solve equal flow problem is to be of practical significance very much
, and the technological difficulties of output power are improved under research high-power high-current at present.
Currently, selecting same batch power electronic devices and phase to guarantee each parallel branch impedance having the same
Same driving circuit, the additional equalizing reactor of each parallel branch or output choke are flowed to realize.Additional equal galvanic electricity
Anti- device and output choke significantly increase system cost and processing and manufacturing difficulty, while setting to high current power electronics unsteady flow
Standby, equalizing reactor and output choke volume are difficult to accomplish very little, and are also difficult to accomplish that balance is consistent.Therefore using symmetrical
The layout designs of structure are the emphasis that power electronic devices flows.
Summary of the invention
In order to overcome the above-mentioned deficiencies of the prior art, the purpose of the present invention is to provide one kind can solve multiple electric power electricity
The main circuit structure of sub- device parallel current-sharing problem, using symmetric configuration structure, not only uniform heat distribution, flexible layout, and
It is good that power electronic devices on same rectifier arm flows effect, can be to reliably applied to test and produce, bring good economy
Benefit.
To achieve the goals above, the technical solution adopted by the present invention is that:
A kind of main circuit structure can solve multiple power electronic devices parallel current-sharing problems, including round copper bar 2, institute
The 2 inlet wire center weld of round copper bar stated has incoming-line busbar 1, installation hole location 16 is uniformly distributed on the round copper bar 2, often
Two mounting hole one element rows 3 of corresponding installation, the 2 outlet center weld outgoing line busbar 12 of round copper bar, round copper bar
Installation hole location 16 is uniformly distributed on 10, every two mounting hole corresponds to the molten row 7 fastly of installation one, and the element rows 3 are melted with fast
It arranges 7 every groups to be correspondingly arranged, not connect by installing hole location between element rows (3) and fast molten row (7), so being provided with back steel sheet 4
With steel spring plate 9 by crimping contact, connected between the back steel sheet 4 and steel spring plate 9 by bolt 11.
Every group of described two mounting holes are fixed with an element rows 3 with screw and nut.
Every group of described two mounting holes are fixed with a fast molten row 7 with screw and nut.
The steel spring plate 9 is arcuate structure.
Successively installation elements are arranged 3, thyristor 5, fastp-acting fuse 6, are melted fastly between the back steel sheet 4 and steel spring plate 9
Arrange 7, briquetting 8.
Beneficial effects of the present invention:
1, a kind of main circuit knot that can solve multiple power electronic devices parallel current-sharing problems that the invention patent provides
Structure improves the operational efficiency of rectifier cabinet, reduces the loss of each link, energy-saving to entire production system to have remarkable effect.
2, a kind of main circuit knot that can solve multiple power electronic devices parallel current-sharing problems that the invention patent provides
Structure, delicate structure is easy for installation, each parallel branch symmetric configuration, is a kind of very strong main circuit structure in parallel of practicability.
3, a kind of main circuit knot that can solve multiple power electronic devices parallel current-sharing problems that the invention patent provides
Structure, each parallel branch do not need to increase additional equalizing reactor or output choke, can reach ideal stream effect
Fruit.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of rectifying bridge arm, wherein 1a is the angle from outgoing line busbar, and 1b is from incoming-line busbar
Angle.
Fig. 2 is the core rectifier arm disk schematic diagram of 5 element in parallel.
Fig. 3 is the core rectifier arm disk schematic diagram of 6 element in parallel.
Fig. 4 is the core rectifier arm disk schematic diagram of 7 element in parallel.
Fig. 5 is the core rectifier arm disk schematic diagram of 8 element in parallel.
Fig. 6 is the core rectifier arm disk schematic diagram of 9 element in parallel.
Fig. 7 is the disk schematic diagram of 10 element in parallel.
Fig. 8 is the three-phase bridge main circuit schematic diagram of disc structure.
Fig. 9 is double anti-star main circuit schematic diagrames of disc structure.
Specific embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings.
As shown in Figure 1, the present invention provides one kind of offer can solve multiple power electronic devices parallel current-sharing problems
Main circuit structure, comprising:
Incoming-line busbar 1 is connected with the mode that round copper bar 2 welds.Installation hole location 16 is uniformly distributed on round copper bar 2,
Every group of two mounting holes are fixed with an element rows 3 with screw and nut.
Outgoing line busbar 12 is connected with the mode that round copper bar 10 welds.Installation hole location 16 is uniformly distributed on round copper bar 10
A, every group of two mounting holes are fixed with a fast molten row 7 with screw and nut.
It is connected between back steel sheet 4 and steel spring plate 9 by bolt 11.Steel spring plate 9 is arcuate structure, makes bolt 11 and spiral shell
Female uniform force prevents bolt strained deformation.
Element rows 3, thyristor 5, fastp-acting fuse 6, fast molten row 7, pressure are sequentially placed between back steel sheet 4 and steel spring plate 9
Block 8.
Preferably, the round copper bar 2 and round copper bar 10 are related with the number of parallel power electronic device is chosen.Figure
Shown in be 8 element in parallel structure, we can also be changed to the structure of 5~10 element in parallel according to actual requirement.
Preferably, each parallel branch symmetric configuration, each parallel branch current path length is identical, is a kind of practical
Property very strong main circuit structure in parallel.
On the basis of the above embodiments, available extension, Fig. 2~Fig. 7 give the structure of 5~10 element in parallel
Schematic diagram.
On the basis of the above embodiments, three-phase bridge and double anti-star masters is set forth in available extension, Fig. 8~Fig. 9
The structural schematic diagram of circuit.
This practical patent of invention uses disc structure, not only uniform heat distribution, flexible layout, and on same rectifier arm
It is good that power electronic devices flows effect, can be to reliably applied to test and produce, bring good economic benefit.The invention patent
In, each parallel branch current path length is identical, and increase the operational efficiency for improving rectifier cabinet, reduces the loss of each link,
It is energy-saving to entire production system to have remarkable effect, it is a kind of very strong main circuit structure in parallel of practicability.
The operation principle of the present invention is that: after the electric current inputted from confluence busbar 12 first passes through fastp-acting fuse, through n parallel connection
Power electronic devices converted after, then exported by confluence busbar 1, since n power electronic devices in parallel is in equal radiuses
It is distributed on circumference, thus distance is identical between the main busbar 12 and 1 of the main electrode distance two of each power electronic devices two, electric current
Current path length from input (busbar 12) to output (busbar 1) is identical, thus each power electronic devices may be implemented and hold
The nearly 1/n for carrying on a shoulder pole total current reaches and flows effect well.
Claims (5)
1. a kind of main circuit structure that can solve multiple power electronic devices parallel current-sharing problems, which is characterized in that including circle
Shape copper bar (2), described round copper bar (2) the inlet wire center weld have incoming-line busbar (1), on the round copper bar (2) uniformly
Distributing installation hole location 16, every two mounting hole one element rows (3) of corresponding installation, described round copper bar (2) the outlet center
It welds outgoing line busbar (12), installation hole location 16, the corresponding installation one of every two mounting hole is uniformly distributed on round copper bar (10)
Fast molten row (7), the element rows (3) are correspondingly arranged with fast molten every group of row (7), are not led between element rows (3) and fast molten row (7)
Cross the connection of installation hole location, contacted so being provided with back steel sheet (4) and steel spring plate (9) by crimping, the back steel sheet (4) and
It is connected between steel spring plate (9) by bolt (11).
2. a kind of main circuit knot that can solve multiple power electronic devices parallel current-sharing problems according to claim 1
Structure, which is characterized in that every group of described two mounting holes are fixed with an element rows (3) with screw and nut.
3. a kind of main circuit knot that can solve multiple power electronic devices parallel current-sharing problems according to claim 1
Structure, which is characterized in that every group of described two mounting holes are fixed with a fast molten row (7) with screw and nut.
4. a kind of main circuit knot that can solve multiple power electronic devices parallel current-sharing problems according to claim 1
Structure, which is characterized in that the steel spring plate (9) is arcuate structure.
5. a kind of main circuit knot that can solve multiple power electronic devices parallel current-sharing problems according to claim 1
Structure, which is characterized in that successively installation elements row (3), thyristor (5), fast between the back steel sheet (4) and steel spring plate (9)
Fast fuse (6), fast molten row (7), briquetting (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910617735.1A CN110350803B (en) | 2019-07-10 | 2019-07-10 | Main circuit structure capable of solving parallel current sharing problem of multiple power electronic devices |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910617735.1A CN110350803B (en) | 2019-07-10 | 2019-07-10 | Main circuit structure capable of solving parallel current sharing problem of multiple power electronic devices |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110350803A true CN110350803A (en) | 2019-10-18 |
| CN110350803B CN110350803B (en) | 2024-06-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910617735.1A Active CN110350803B (en) | 2019-07-10 | 2019-07-10 | Main circuit structure capable of solving parallel current sharing problem of multiple power electronic devices |
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| Country | Link |
|---|---|
| CN (1) | CN110350803B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114883198A (en) * | 2022-05-09 | 2022-08-09 | 浙江方圆电气设备检测有限公司 | Multilayer stacked star-type parallel current-sharing connection structure and connection method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1913351A (en) * | 2006-08-15 | 2007-02-14 | 中国科学院等离子体物理研究所 | Heavy-current electronic switch of static and dynamic flow equalization |
| JP2007215299A (en) * | 2006-02-08 | 2007-08-23 | Nissan Motor Co Ltd | Power converter and power converter integrated motor |
| CN101895283A (en) * | 2010-07-28 | 2010-11-24 | 中国西电电气股份有限公司 | Direct current quick switching structure of annular large-power thyristor |
| CN204103781U (en) * | 2014-09-29 | 2015-01-14 | 株洲变流技术国家工程研究中心有限公司 | A kind of outer bypass cabinet |
| CN204156716U (en) * | 2014-11-05 | 2015-02-11 | 九江九整整流器有限公司 | Element compression bonding apparatus in a kind of high-tension high-power converter system |
| CN105932016A (en) * | 2016-06-12 | 2016-09-07 | 重庆大学 | Dynamic and static current-sharing and multi-chip paralleled power module |
| CN210137284U (en) * | 2019-07-10 | 2020-03-10 | 陕西高科电力电子有限责任公司 | Main circuit structure capable of solving parallel current sharing problem of multiple power electronic devices |
-
2019
- 2019-07-10 CN CN201910617735.1A patent/CN110350803B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007215299A (en) * | 2006-02-08 | 2007-08-23 | Nissan Motor Co Ltd | Power converter and power converter integrated motor |
| CN1913351A (en) * | 2006-08-15 | 2007-02-14 | 中国科学院等离子体物理研究所 | Heavy-current electronic switch of static and dynamic flow equalization |
| CN101895283A (en) * | 2010-07-28 | 2010-11-24 | 中国西电电气股份有限公司 | Direct current quick switching structure of annular large-power thyristor |
| CN204103781U (en) * | 2014-09-29 | 2015-01-14 | 株洲变流技术国家工程研究中心有限公司 | A kind of outer bypass cabinet |
| CN204156716U (en) * | 2014-11-05 | 2015-02-11 | 九江九整整流器有限公司 | Element compression bonding apparatus in a kind of high-tension high-power converter system |
| CN105932016A (en) * | 2016-06-12 | 2016-09-07 | 重庆大学 | Dynamic and static current-sharing and multi-chip paralleled power module |
| CN210137284U (en) * | 2019-07-10 | 2020-03-10 | 陕西高科电力电子有限责任公司 | Main circuit structure capable of solving parallel current sharing problem of multiple power electronic devices |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114883198A (en) * | 2022-05-09 | 2022-08-09 | 浙江方圆电气设备检测有限公司 | Multilayer stacked star-type parallel current-sharing connection structure and connection method thereof |
| CN114883198B (en) * | 2022-05-09 | 2024-11-08 | 浙江方圆电气设备检测有限公司 | Multi-layer stacked star-type parallel current-sharing connection structure and connection method thereof |
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| CN110350803B (en) | 2024-06-14 |
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