CN205489500U - Current limiting device's of dc power system bridge circuit structure based on IGBT - Google Patents
Current limiting device's of dc power system bridge circuit structure based on IGBT Download PDFInfo
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- CN205489500U CN205489500U CN201620244599.8U CN201620244599U CN205489500U CN 205489500 U CN205489500 U CN 205489500U CN 201620244599 U CN201620244599 U CN 201620244599U CN 205489500 U CN205489500 U CN 205489500U
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- diode
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Abstract
The utility model discloses a current limiting device's of dc power system bridge circuit structure based on IGBT, including DC power supply, diode bridge circuit and IGBT circuit, DC power supply's positive pole is connected with the inductance, the inductance is connected with detection circuitry through the switch, detection circuitry is connected with drive circuit, detection circuitry and diode bridge circuit link to each other, DC power supply's negative pole is connected with the load, diode bridge circuit is established ties by VD1 diode, VD2 diode, VD3 diode and VD4 diode and constitutes, detection circuitry connects between VD1 diode and VD3 diode, the load is connected between VD2 diode and VD4 diode, the IGBT circuit connects in parallel in diode bridge circuit, the IGBT circuit includes IGBT, IGBT is parallelly connected to have R1 resistance, electric capacity, VD5 diode and VD6 diode, has simple structure, and the current -limiting action is accurate rapidly, and application scope is wide, safe and reliable's advantage, and the current -limiting is respond well, has stronger practicality.
Description
Technical field
This utility model relates to IGBT applied technical field, is specifically related to a kind of direct current power system current limliting based on IGBT
The bridge circuit structure of device.
Background technology
At present, in direct current power system, the wide variety of product with cut-off current characteristics mainly has dc circuit breaker and fuse
And a combination of both.They are all to utilize increasing rapidly of arc resistance to carry out current limliting, and principle is equivalent to connect in the line one
Individual current limiting element.But utilize arc resistance current limliting to have significant limitation.It is quick that the weight of dc circuit breaker contact governs it
Property, and the rated current that contact weight is proportional to chopper can not too reduce.Dc circuit breaker there is also so-called electric arc simultaneously
Initial stagnation behavior.Fuse is by short circuit current fusing fuse arcing, and the thermal inertia of fuse limits current limitation effect, and fuse
Destroy the selectivity of protection, reduce the automatization level that system is run.Therefore need to develop one and can limit rapidly short circuit
Electric current, and on system without the current-limiting apparatus affected.
Summary of the invention
For problem above, this utility model provides the bridge-type electricity of a kind of direct current power system current-limiting apparatus based on IGBT
Line structure, has simple in construction, and current limiting action is accurate rapidly, and advantage applied widely, safe and reliable cannot be only used for one
As the protection of accumulator straight-flow system, it may also be used for the protection of generator-rectifier system, current limitation effect is good, has stronger practicality
Property, can effectively solve the problem in background technology.
To achieve these goals, the technical solution adopted in the utility model is as follows: a kind of direct current power system based on IGBT
The bridge circuit structure of system current-limiting apparatus, including DC source, diode-bridge circuit and IGBT circuit, described DC source
Positive pole connect and have inductance, described inductance has a testing circuit by switch connection, and described testing circuit connects drive circuit, institute
Stating testing circuit to be connected with diode-bridge circuit, the negative pole of described DC source connects load, described diode-bridge circuit
By VD1Diode, VD2Diode, VD3Diode and VD4Diode series forms, wherein VD1Diode and VD3
The polar orientation of diode is identical, described VD2Diode and VD4The polar orientation of diode is identical, described VD1Diode with
VD2Diode polarity is contrary, and described testing circuit is connected to VD1Diode and VD3Between diode, described load is connected to
VD2Diode and VD4Between diode, described IGBT circuit in parallel in diode-bridge circuit, described IGBT circuit bag
Include IGBT, described IGBT and be parallel with R1Resistance, electric capacity, VD5Diode and VD6Diode.
As this utility model a kind of preferably technical scheme, described R1Resistor coupled in parallel is at VD5Diode two ends.
As a kind of preferably technical scheme of this utility model, described capacitances in series is at VD5The negative pole of diode.
The beneficial effects of the utility model:
This utility model Novel DC based on IGBT power system current-limiting apparatus, has simple in construction, and current limiting action is accurate rapidly,
Advantage applied widely, safe and reliable, cannot be only used for the protection of general accumulator straight-flow system, it may also be used for rectification generates electricity
The protection of machine system, current limitation effect is good, has stronger practicality.
Accompanying drawing explanation
Fig. 1 is this utility model overall structure schematic diagram.
Figure is numbered: 1-DC source；2-diode-bridge circuit；3-IGBT circuit；4-inductance；5-switchs；6-detects
Circuit；7-drive circuit；8-loads；9-VD1Diode；10-VD2Diode；11-VD3Diode；12-VD4Diode；
13-IGBT；14-R1Resistance；15-electric capacity；16-VD5Diode；17-VD6Diode.
Detailed description of the invention
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples,
This utility model is further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain this reality
With novel, it is not used to limit this utility model.
Embodiment:
As it is shown in figure 1, the bridge circuit structure of a kind of direct current power system current-limiting apparatus based on IGBT, including DC source 1, two
Pole pipe bridge circuit 2 and IGBT circuit 3, the positive pole of described DC source 1 connects inductance 4, and described inductance 4 is by switch
5 connections have testing circuit 6, and described testing circuit 6 connects drive circuit 7, described testing circuit 6 and diode-bridge circuit
2 are connected, and the negative pole of described DC source 1 connects load 8, and described diode-bridge circuit 2 is by VD1Diode 9, VD2
Diode 10, VD3Diode 11 and VD4Diode 12 is composed in series, wherein VD1Diode 9 and VD3Diode 11
Polar orientation identical, described VD2Diode 10 and VD4The polar orientation of diode 12 is identical, described VD1Diode 9
With VD2Diode 10 opposite polarity, described testing circuit 6 is connected to VD1Diode 9 and VD3Between diode 11, institute
State load 8 and be connected to VD2Diode 10 and VD4Between diode 12, described IGBT circuit 3 is parallel to diode bridge
Circuit 2, described IGBT circuit 3 includes that IGBT13, described IGBT13 are parallel with R1Resistance 14, electric capacity 15, VD5Two
Pole pipe 16 and VD6Diode 17.
On above-described embodiment preferably, described R1Resistance 14 is connected in parallel on VD5Diode 16 two ends.
On above-described embodiment preferably, described electric capacity 15 is connected on VD5The negative pole of diode 16.
Operation principle: the circuit structure design of novel current-limiting apparatus is bridge circuit, the forward and reverse homomergic flow of electric current moves.Normal fortune
During row, DC source E powers to load R by VD1, IGBT, VD4, when DC source E (such as accumulator) needs
During charging, charge power supply is charged to DC source E by VD2, IGBT, VD3.In testing circuit, preset protection
Action current value is Iset, when fault occurs, detects when short circuit current is more than Iset, and drive circuit turns off rapidly IGBT, short
Road electric current is transferred on buffer circuit, and current-limiting apparatus realizes error protection.
Based on above-mentioned, this utility model Novel DC based on IGBT power system current-limiting apparatus has simple in construction, current limliting
It is swift in motion accurately, advantage applied widely, safe and reliable, cannot be only used for the protection of general accumulator straight-flow system, also
Can be used for the protection of generator-rectifier system, current limitation effect is good, has stronger practicality.
The foregoing is only preferred embodiment of the present utility model, not in order to limit this utility model, all in this practicality
Any amendment, equivalent and the improvement etc. made within novel spirit and principle, should be included in protection of the present utility model
Within the scope of.
Claims (3)
1. the bridge circuit structure of a direct current power system current-limiting apparatus based on IGBT, it is characterised in that include DC source (1),
Diode-bridge circuit (2) and IGBT circuit (3), the positive pole of described DC source (1) connects inductance (4), described
Inductance (4) is connected by switch (5) testing circuit (6), and described testing circuit (6) connects drive circuit (7), institute
Stating testing circuit (6) to be connected with diode-bridge circuit (2), the negative pole of described DC source (1) connects load (8),
Described diode-bridge circuit (2) is by VD1Diode (9), VD2Diode (10), VD3Diode (11) and VD4
Diode (12) is composed in series, wherein VD1Diode (9) and VD3The polar orientation of diode (11) is identical, described
VD2Diode (10) and VD4The polar orientation of diode (12) is identical, described VD1Diode (9) and VD2Two poles
Pipe (10) opposite polarity, described testing circuit (6) is connected to VD1Diode (9) and VD3Between diode (11),
Described load (8) is connected to VD2Diode (10) and VD4Between diode (12), described IGBT circuit (3) and
Being coupled to diode-bridge circuit (2), described IGBT circuit (3) includes that IGBT (13), described IGBT (13) are parallel with
R1Resistance (14), electric capacity (15), VD5Diode (16) and VD6Diode (17).
The bridge circuit structure of a kind of direct current power system current-limiting apparatus based on IGBT the most according to claim 1, its feature
It is: described R1Resistance (14) is connected in parallel on VD5Diode (16) two ends.
The bridge circuit structure of a kind of direct current power system current-limiting apparatus based on IGBT the most according to claim 1, its feature
It is: described electric capacity (15) is connected on VD5The negative pole of diode (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620244599.8U CN205489500U (en) | 2016-03-25 | 2016-03-25 | Current limiting device's of dc power system bridge circuit structure based on IGBT |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620244599.8U CN205489500U (en) | 2016-03-25 | 2016-03-25 | Current limiting device's of dc power system bridge circuit structure based on IGBT |
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| Publication Number | Publication Date |
|---|---|
| CN205489500U true CN205489500U (en) | 2016-08-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201620244599.8U Expired - Fee Related CN205489500U (en) | 2016-03-25 | 2016-03-25 | Current limiting device's of dc power system bridge circuit structure based on IGBT |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106953305A (en) * | 2017-04-18 | 2017-07-14 | 浙江大学 | A kind of combined high-voltage dc circuit breaker and its control strategy with DC power flow control ability |
| CN107769180A (en) * | 2016-08-23 | 2018-03-06 | 全球能源互联网研究院 | A kind of full-control type current limiter based on prebreakdown type high-voltage switch gear |
| CN108768184A (en) * | 2018-04-23 | 2018-11-06 | 北京平高清大科技发展有限公司 | A kind of switch power unit and high voltage DC breaker |
| CN109193580A (en) * | 2018-09-12 | 2019-01-11 | 山东大学 | A kind of current-limiting type high-speed reclosure direct-current breaker topology structure and control method |
| CN111211541A (en) * | 2018-11-21 | 2020-05-29 | 中国船舶重工集团公司第七一一研究所 | Direct current solid-state circuit breaker |
| CN113036737A (en) * | 2021-03-25 | 2021-06-25 | 福州大学 | Flexible current limiter capable of being connected in series on direct current circuit and control method thereof |
-
2016
- 2016-03-25 CN CN201620244599.8U patent/CN205489500U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107769180A (en) * | 2016-08-23 | 2018-03-06 | 全球能源互联网研究院 | A kind of full-control type current limiter based on prebreakdown type high-voltage switch gear |
| CN106953305A (en) * | 2017-04-18 | 2017-07-14 | 浙江大学 | A kind of combined high-voltage dc circuit breaker and its control strategy with DC power flow control ability |
| CN106953305B (en) * | 2017-04-18 | 2019-01-29 | 浙江大学 | A kind of combined high-voltage dc circuit breaker and its control strategy with DC power flow control ability |
| CN108768184A (en) * | 2018-04-23 | 2018-11-06 | 北京平高清大科技发展有限公司 | A kind of switch power unit and high voltage DC breaker |
| CN109193580A (en) * | 2018-09-12 | 2019-01-11 | 山东大学 | A kind of current-limiting type high-speed reclosure direct-current breaker topology structure and control method |
| CN109193580B (en) * | 2018-09-12 | 2019-12-27 | 山东大学 | Current-limiting type rapid reclosing direct-current breaker topological structure and control method |
| CN111211541A (en) * | 2018-11-21 | 2020-05-29 | 中国船舶重工集团公司第七一一研究所 | Direct current solid-state circuit breaker |
| CN113036737A (en) * | 2021-03-25 | 2021-06-25 | 福州大学 | Flexible current limiter capable of being connected in series on direct current circuit and control method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160817 Termination date: 20190325 |
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| CF01 | Termination of patent right due to non-payment of annual fee |