CN203883666U - Grid-connected control device of frequency converter - Google Patents
Grid-connected control device of frequency converter Download PDFInfo
- Publication number
- CN203883666U CN203883666U CN201420259511.0U CN201420259511U CN203883666U CN 203883666 U CN203883666 U CN 203883666U CN 201420259511 U CN201420259511 U CN 201420259511U CN 203883666 U CN203883666 U CN 203883666U
- Authority
- CN
- China
- Prior art keywords
- contactor
- copper bar
- grid
- frequency converter
- control device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 22
- 229910052802 copper Inorganic materials 0.000 claims abstract description 22
- 239000010949 copper Substances 0.000 claims abstract description 22
- 239000000758 substrate Substances 0.000 claims abstract description 8
- 230000004888 barrier function Effects 0.000 claims description 3
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 238000013459 approach Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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- Ac-Ac Conversion (AREA)
Abstract
The utility model discloses a grid-connected control device of a frequency converter including a substrate and a contactor, an upper inlet wire copper bar set, a lower inlet wire copper bar set, and a breaker are arranged on the substrate, one end of the breaker is connected with the upper inlet wire copper bar set, one end of the contactor is connected with the other end of the breaker, and the other end of the contactor is connected with the lower inlet wire copper bar set. Compared with the prior art, the control device performs grid-connected control on the frequency converter by means of the contactor and the breaker and performs flexible opening and closing by means of the contactor, and the mechanical breaker breaks load current, so that the service life of equipment is greatly prolonged, the system stability is improved, and the failure rate is reduced.
Description
Technical field
The utility model relates to the inner structure part of frequency converter, relates in particular to a kind of grid-connection control device of frequency converter.
Background technology
The grid-connected control mode of existing frequency converter, adopt mechanical type circuit breaker to carry out grid-connected and off-grid, when deciliter number of times approaches the limit (due to wind regime unstable, be easy to reach), be easy to cause the frequent off-grid of circuit breaker and grid-connected, mechanical loss is very large, and occurs after clamping stagnation at mechanical mechanism, can postpone the off-grid time, easily cause frequency converter or motor to damage because of overvoltage, and deciliter number of times of mechanical type circuit breaker is lower, to only have 20,000 times, useful life is very short.
Utility model content
The purpose of this utility model is the grid-connection control device that a kind of long service life of frequency converter will be provided.
For achieving the above object, the utility model is implemented according to following technical scheme:
The grid-connection control device of frequency converter, comprise substrate and contactor, described substrate is provided with upper incoming line copper bar group, lower inlet wire copper bar group and circuit breaker, one end of described circuit breaker is connected with described upper incoming line copper bar group, one end of described contactor is connected with the other end of described circuit breaker, and the other end of described contactor is connected with described lower inlet wire copper bar group.
As preferably, described contactor is multifinger contactor.
As preferably, the bottom of described upper incoming line copper bar group and described lower inlet wire copper bar group is provided with insulating barrier.
Compared with prior art, the utility model utilizes contactor to add circuit breaker frequency converter to be carried out to grid-connected control, carry out soft deciliter by contactor, mechanical type circuit breaker disjunction load current, in greatly useful life of extension device and improved the stability of a system, reduce failure rate.
Brief description of the drawings
Fig. 1 is the structural scheme of mechanism of the grid-connection control device of frequency converter described in the utility model;
Embodiment
Below in conjunction with accompanying drawing and specific embodiment, the utility model is further described, is used for explaining the utility model in illustrative examples and the explanation of this utility model, but not as to restriction of the present utility model.
As shown in Figure 1: the utility model comprises substrate 1 and contactor 4, substrate 1 is provided with upper incoming line copper bar group 2, lower inlet wire copper bar group 5 and circuit breaker 3, one end of circuit breaker 3 is connected with upper incoming line copper bar group 2, one end of contactor 4 is connected with the other end of circuit breaker 3, the other end of contactor 4 is connected with lower inlet wire copper bar group 5, contactor 4 is selected multifinger contactor, range of choice is wide, extensibility is better, the bottom of upper incoming line copper bar group 2 and lower inlet wire copper bar group 5 is provided with insulating barrier, can prevent like this conduction.
Along with the raising of large volume contactor manufacturing technology, the contactor of the electric current of existing energy disjunction Megawatt fan occurs at present, contactor 4 electrical endurances are more than 500,000 times, use contactor 4 instead and carry out soft deciliter, mechanical type circuit breaker 3 disjunction load currents combining form, in greatly useful life of extension device and improved the stability of a system, reduce failure rate.
The technical solution of the utility model is not limited to the restriction of above-mentioned specific embodiment, and every technology distortion of making according to the technical solution of the utility model, within all falling into protection range of the present utility model.
Claims (3)
1. the grid-connection control device of frequency converter, comprise substrate, described substrate is provided with upper incoming line copper bar group, lower inlet wire copper bar group and circuit breaker, one end of described circuit breaker is connected with described upper incoming line copper bar group, it is characterized in that: also comprise contactor, one end of described contactor is connected with the other end of described circuit breaker, and the other end of described contactor is connected with described lower inlet wire copper bar group.
2. the grid-connection control device of frequency converter according to claim 1, is characterized in that: described contactor is multifinger contactor.
3. the grid-connection control device of frequency converter according to claim 1, is characterized in that: the bottom of described upper incoming line copper bar group and described lower inlet wire copper bar group is provided with insulating barrier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420259511.0U CN203883666U (en) | 2014-05-21 | 2014-05-21 | Grid-connected control device of frequency converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420259511.0U CN203883666U (en) | 2014-05-21 | 2014-05-21 | Grid-connected control device of frequency converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203883666U true CN203883666U (en) | 2014-10-15 |
Family
ID=51684130
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420259511.0U Expired - Lifetime CN203883666U (en) | 2014-05-21 | 2014-05-21 | Grid-connected control device of frequency converter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203883666U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105958541A (en) * | 2016-06-13 | 2016-09-21 | 天津瑞能电气有限公司 | Fast installation and connection structure for wind power generation converter circuit breaker and rear end copper bars |
-
2014
- 2014-05-21 CN CN201420259511.0U patent/CN203883666U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105958541A (en) * | 2016-06-13 | 2016-09-21 | 天津瑞能电气有限公司 | Fast installation and connection structure for wind power generation converter circuit breaker and rear end copper bars |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20141015 |