CN204810170U - Bidirectional energy storage converter - Google Patents
Bidirectional energy storage converter Download PDFInfo
- Publication number
- CN204810170U CN204810170U CN201520490613.8U CN201520490613U CN204810170U CN 204810170 U CN204810170 U CN 204810170U CN 201520490613 U CN201520490613 U CN 201520490613U CN 204810170 U CN204810170 U CN 204810170U
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- full
- conversion module
- bridge conversion
- transform module
- bridge
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The utility model belongs to the technical field of the electric device technique and specifically relates to a bidirectional energy storage converter. It includes first full -bridge transform module, second full -bridge transform module and third full -bridge transform module, and the input of first full -bridge transform module links to each other with the electric wire netting, the output is connected in the input of second full -bridge transform module, and the output of second full -bridge transform module passes through high frequency isolation transformer to be connected in the input of third full -bridge transform module, and the output of third full -bridge transform module links to each other with energy storage battery. The utility model discloses a can realize the different control mode to the converter to disassembling of structure for the control mode of whole converter is very nimble, its simple structure, extended functionality are strong, have very strong practical value.
Description
Technical field
The utility model relates to electric device technical field, especially a kind of bidirectional energy-storage current transformer.
Background technology
Battery energy storage technology is the battery link increasing a store electrical energy on the basis of conventional electric power production model, makes the system of original almost complete " rigidity " become " flexibility " system; Because battery energy storage system is calmed down at load, had very high using value in uninterrupted power supply, power quality controlling etc., receive the most attention of countries in the world in recent years.
Battery energy storage system is primarily of battery and electrical network connecting system composition, and electrical network connecting system mainly refers to the current transformer bearing energy flow between battery and electrical network; From circuit structure, traditional battery energy storage current transformer completes the charging and discharging process of storage battery respectively by the charging link of separating and electric discharge link, and just single circuit manages itself simply, facilitates; But with regard to whole system, add the module number of system and control difficulty.
In addition, conventional current transformer generally adopts centerized fusion, this has the advantages such as structure is simple, with low cost, control loop design is convenient to single current transformer, but the shortcoming such as reliability and reconfigurable property difference is existed for larger converter system, and along with the expansion of system, the information exchange of controller and main power link increases, and controlling unit is bound to become complicated and chaotic.
Utility model content
For the deficiency that above-mentioned prior art exists, the purpose of this utility model is the bidirectional energy-storage current transformer that a kind of structure is simple, expanded function is strong, control mode is flexible and changeable.
To achieve these goals, the utility model adopts following technical scheme:
A kind of bidirectional energy-storage current transformer, it comprises the first full-bridge conversion module, the second full-bridge conversion module and the 3rd full-bridge conversion module, the input that the input of described first full-bridge conversion module is connected with electrical network, output is connected to the second full-bridge conversion module, the output of described second full-bridge conversion module is connected to the input of the 3rd full-bridge conversion module by high-frequency isolation transformer, the output of described 3rd full-bridge conversion module is connected with energy-storage battery.
Preferably, a power frequency series inductance is also connected with between the input of described first full-bridge conversion module and the live wire of electrical network, an output also DC filter capacitor in parallel of described first full-bridge conversion module, is also connected with a high frequency serial inductance between described second full-bridge conversion module and high-frequency isolation transformer.
Owing to have employed such scheme, the utility model is by disassembling the different control modes that can realize current transformer to structure, that is: the first full-bridge conversion module and the second full-bridge conversion module composition AC-DC-AC translation circuit can be utilized, then can form the SCR rectification circuit of AC-DC with the 3rd full-bridge conversion module; Also the isolation bi-directional DC-DC circuit that the first full-bridge conversion module forms AC-DC SCR rectification circuit and is made up of the second full-bridge conversion module and the 3rd full-bridge conversion module can be utilized; And energy storage or the discharge system of storage battery can be realized with different control modes by above-mentioned two different disassemblying structures, make the control mode of whole current transformer very flexible; Its structure is simple, control mode is flexible and changeable, and provides possibility for its functions expanding, has very strong practical value and market popularization value.
Accompanying drawing explanation
Fig. 1 is the electrical block diagram of the utility model embodiment;
Fig. 2 is formed the in parallel energy-storage system of the utility model embodiment;
The energy-storage system that Fig. 3 is formed in the mode of series connection for the utility model embodiment.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in detail, but the multitude of different ways that the utility model can be defined by the claims and cover is implemented.
As shown in Figure 1, a kind of bidirectional energy-storage current transformer that the utility model provides, it comprises the first full-bridge conversion module H1, the second full-bridge conversion module H2 and the 3rd full-bridge conversion module H3; Wherein, each conversion module configures four power diodes by four power switch pipes and forms, the input that the input of the first full-bridge conversion module H1 is connected with electrical network, output is connected to the second full-bridge conversion module H2, the output of the second full-bridge conversion module H2 is connected to the input of the 3rd full-bridge conversion module H3 by high-frequency isolation transformer T, the output of the 3rd full-bridge conversion module H3 is then connected with energy-storage battery B.
So, by disassembling the different control modes that can realize current transformer to said structure, that is: the first full-bridge conversion module H1 and the second full-bridge conversion module H2 can be utilized to form and to hand over orthogonal (AC-DC-AC) translation circuit, then can form the SCR rectification circuit of AC-DC with the 3rd full-bridge conversion module H3; Also the isolation bi-directional DC-DC circuit that the first full-bridge conversion module H2 forms AC-DC SCR rectification circuit and is made up of the second full-bridge conversion module H2 and the 3rd full-bridge conversion module H3 can be utilized; And energy storage or the discharge system of storage battery B can be realized with different control modes by above-mentioned two different disassemblying structures, make the control mode of whole current transformer very flexible; In addition, utilize said structure, also can carry out expansion type application to whole current transformer, to form various large-scale battery energy storage or electric discharge grid-connected system (specifically as shown in Figures 2 and 3).
Further, for ensureing the stability of the performance of whole current transformer, a power frequency series inductance Ls is also connected with between the input and the live wire L of electrical network of the first full-bridge conversion module H1, at an output also DC filter capacitor Cs in parallel of the first full-bridge conversion module H1, between the second full-bridge conversion module H2 and high-frequency isolation transformer T, be also connected with a high frequency serial inductance L t.
The foregoing is only preferred embodiment of the present utility model; not thereby the scope of the claims of the present utility model is limited; every utilize the utility model specification and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present utility model.
Claims (2)
1. a bidirectional energy-storage current transformer, it is characterized in that: it comprises the first full-bridge conversion module, the second full-bridge conversion module and the 3rd full-bridge conversion module, the input that the input of described first full-bridge conversion module is connected with electrical network, output is connected to the second full-bridge conversion module, the output of described second full-bridge conversion module is connected to the input of the 3rd full-bridge conversion module by high-frequency isolation transformer, the output of described 3rd full-bridge conversion module is connected with energy-storage battery.
2. a kind of bidirectional energy-storage current transformer as claimed in claim 1, it is characterized in that: between the input of described first full-bridge conversion module and the live wire of electrical network, be also connected with a power frequency series inductance, an output also DC filter capacitor in parallel of described first full-bridge conversion module, is also connected with a high frequency serial inductance between described second full-bridge conversion module and high-frequency isolation transformer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520490613.8U CN204810170U (en) | 2015-07-09 | 2015-07-09 | Bidirectional energy storage converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520490613.8U CN204810170U (en) | 2015-07-09 | 2015-07-09 | Bidirectional energy storage converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204810170U true CN204810170U (en) | 2015-11-25 |
Family
ID=54594921
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520490613.8U Expired - Fee Related CN204810170U (en) | 2015-07-09 | 2015-07-09 | Bidirectional energy storage converter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204810170U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105610338A (en) * | 2016-03-05 | 2016-05-25 | 东北电力大学 | Energy conversion system of high-capacity parallel energy storage battery |
-
2015
- 2015-07-09 CN CN201520490613.8U patent/CN204810170U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105610338A (en) * | 2016-03-05 | 2016-05-25 | 东北电力大学 | Energy conversion system of high-capacity parallel energy storage battery |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151125 Termination date: 20180709 |