CN207625454U - A kind of high-frequency photovoltaic inverter - Google Patents
A kind of high-frequency photovoltaic inverter Download PDFInfo
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- CN207625454U CN207625454U CN201721810938.5U CN201721810938U CN207625454U CN 207625454 U CN207625454 U CN 207625454U CN 201721810938 U CN201721810938 U CN 201721810938U CN 207625454 U CN207625454 U CN 207625454U
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- booster
- converter
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- box body
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- 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
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
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Abstract
The utility model discloses a kind of high-frequency photovoltaic inverters, including box body, the box portion outside both sides are respectively equipped with direct-flow input circuit and AC network, the tray interior is equipped with DC booster, buck converter, controller, measurement of power loss device, DC-AC converter and cooling mechanism, the input terminal of the DC booster and the buck converter is connect with the output end of the direct-flow input circuit and the controller respectively, the output end of the DC booster and the buck converter is connect with the measurement of power loss device and the DC-AC converter input terminal, the measurement of power loss device output end is connect with the controller input terminal, the controller output end is connect with the DC-AC converter input terminal, the DC-AC converter output end is connect with the AC network.The utility model is simple in structure, easy to operate, small, and work efficiency is high, reduces the waste of resource, heat dissipation effect is good, and service life is long.
Description
Technical field
The utility model is related to photovoltaic DC-to-AC converter technical field more particularly to a kind of high-frequency photovoltaic inverters.
Background technology
Inverter is also known as feed regulator isolator, can be divided into self power supply according to purposes of the inverter in photovoltaic generating system
With with grid-connected with two kinds.Can be divided into again according to waveform modulated mode square-wave inverter, ladder inverter, sinewave inverter and
Three-Phase Inverter.For the inverter for grid-connected system, according to there is transless that can be divided into transformer type inversion again
Device and inverter without transformer.Inverter is generally made of boosting circuit and inversion bridge type return, and boosting circuit is sun electricity
DC voltage needed for the dc voltage boost in pond to inverter output control；Inversion bridge type return is then the direct current after boosting
Pressure is equivalently converted into the alternating voltage of conventional frequency.Existing photovoltaic DC-to-AC converter efficiency is low, and volume is big, inconvenient to use.
Utility model content
Purpose of the utility model is to solve some problems in the prior art, and a kind of high efficiency photovoltaic proposed
Inverter.
To achieve the goals above, the utility model uses following technical solution：
A kind of high-frequency photovoltaic inverter, including box body, the box portion outside side are equipped with direct-flow input circuit, the box
The other side is equipped with AC network outside body, and the tray interior is equipped with several DC boosters, several buck converters, control
Device, measurement of power loss device, DC-AC converter and several cooling mechanisms processed, the DC booster and the buck converter
Input terminal connect respectively with the output end of the direct-flow input circuit and the controller, and the DC booster with it is described
Buck converter is in parallel, the output end of the DC booster and the buck converter and the measurement of power loss device and described straight
The connection of a-c transducer input terminal is flowed, the measurement of power loss device output end is connect with the controller input terminal, the controller
Output end is connect with the DC-AC converter input terminal, and the DC-AC converter output end connects with the AC network
It connects.
Preferably, the box cover of flexible connection is equipped at the top of the box body.
Preferably, the DC booster and the buck converter are symmetrically disposed on the tray interior side.
Preferably, the cooling mechanism is at least arranged four, and four cooling mechanisms are arranged in the tray interior
Quadrangle.
Preferably, the cooling mechanism includes two wind turbines, and isolating frame, and the cooling mechanism are equipped with outside the wind turbine
Surface is equipped with insulating layer.
Preferably, the DC booster and the buck converter are respectively provided with three, and the DC booster and institute
Buck converter is stated to be arranged in parallel.
Compared with prior art, the utility model provides a kind of high-frequency photovoltaic inverter, has following advantageous effect：
1, the high-frequency photovoltaic inverter can generate a sine wave by the way that DC booster and buck converter is arranged
Electric current is incorporated into power grid and stores, and avoids switching loss, because in the switch conversion phase, it is close by the electric current and voltage of device
Zero；If photovoltaic array voltage is higher than network voltage, circuit works independently as buck converter；If Photovoltaic array voltage is low
In network voltage, booster circuit works asynchronously with buck converter, ensures that buck converter voltage always greater than power grid
Voltage improves the working efficiency of photovoltaic DC-to-AC converter, reduces the waste of resource；
2, the high-frequency photovoltaic inverter controls DC booster and buck converter, controller by the way that controller is arranged
Then the data that can be measured by current inductor calculate power consumption it is determined that needing to start several boosters and decompression conversion
Device, in addition controller can take turns starting different booster or buck converter, so that the heat generated in box body is evenly distributed,
Facilitate and radiate, and work efficiency is high for photovoltaic DC-to-AC converter, service life is long；
3, the high-frequency photovoltaic inverter can be to the electronic component and circuit in box body by the way that cooling mechanism is arranged
It radiates so that the service life is longer for photovoltaic DC-to-AC converter.
It is not directed to part in the device to be the same as those in the prior art or can be realized by using the prior art, the utility model
Simple in structure, easy to operate, small, work efficiency is high, reduces the waste of resource, heat dissipation effect is good, and service life is long.
Description of the drawings
Fig. 1 be the utility model proposes a kind of high-frequency photovoltaic inverter structural schematic diagram.
In figure：1 box body, 2 direct-flow input circuits, 3 AC networks, 4 DC boosters, 5 buck converters, 6 controllers, 7
Measurement of power loss device, 8 DC-AC converters, 9 cooling mechanisms.
Specific implementation mode
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.
In the description of the present invention, it should be understood that term "upper", "lower", "front", "rear", "left", "right",
The orientation or positional relationship of the instructions such as "top", "bottom", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings, and is only
The utility model and simplifying describes for ease of description, do not indicate or imply the indicated device or element must have it is specific
Orientation, with specific azimuth configuration and operation, therefore should not be understood as limiting the present invention.
Referring to Fig.1, a kind of high-frequency photovoltaic inverter, including box body 1,1 outside side of the box body are inputted equipped with direct current
Circuit 2, the 1 outside other side of the box body be equipped with AC network 3, if the box body 1 be internally provided with several DC boosters 4,
Dry buck converter 5, controller 6, measurement of power loss device 7, DC-AC converter 8 and several cooling mechanisms 9, the direct current
The input terminal of booster 4 and the buck converter 5 output end with the direct-flow input circuit 2 and the controller 6 respectively
Connection, and the DC booster 4 is in parallel with the buck converter 5, the DC booster 4 and the buck converter 5
Output end connect with the measurement of power loss device 7 and 8 input terminal of the DC-AC converter, the measurement of power loss device 7 exports
End is connect with 6 input terminal of the controller, and 6 output end of the controller is connect with 8 input terminal of the DC-AC converter, institute
8 output end of DC-AC converter is stated to connect with the AC network 3.
1 top of the box body is equipped with the box cover of flexible connection, and the DC booster 4 and the buck converter 5 are symmetrical
It is set to 1 interior side of the box body, the cooling mechanism 9 is at least arranged four, and four cooling mechanisms 9 are arranged in institute
1 inside quadrangle of box body is stated, the cooling mechanism 9 includes two wind turbines, and isolating frame, and the heat dissipation machine are equipped with outside the wind turbine
9 surface of structure is equipped with insulating layer, and the DC booster 4 and the buck converter 5 are respectively provided with three, and the DC booster
4 and the buck converter 5 be arranged in parallel.
The utility model is simple in structure, easy to operate, small, and work efficiency is high, reduces the waste of resource, heat dissipation effect
Good, service life is long.
Herein, relational terms such as first and second and the like be used merely to by an entity or operation with it is another
One entity or operation distinguish, and without necessarily requiring or implying between these entities or operation, there are any this reality
Relationship or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to the packet of nonexcludability
Contain, so that the process, method, article or equipment including a series of elements includes not only those elements, but also includes
Other elements that are not explicitly listed, or further include for elements inherent to such a process, method, article, or device.
In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including the element
Process, method, article or equipment in there is also other identical elements.
While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art,
It is appreciated that can these embodiments be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaiied
Change, replace and modification, the scope of the utility model are defined by the appended claims and the equivalents thereof.
The preferable specific implementation mode of the above, only the utility model, but the scope of protection of the utility model is not
Be confined to this, any one skilled in the art within the technical scope disclosed by the utility model, according to this practicality
Novel technical solution and its utility model design are subject to equivalent substitution or change, should all cover the protection model in the utility model
Within enclosing.
Claims (6)
1. a kind of high-frequency photovoltaic inverter, including box body (1), which is characterized in that the external side of the box body (1) is equipped with direct current
The external other side of input circuit (2), the box body (1) is equipped with AC network (3), and it is straight that the box body (1) is internally provided with several
Flow booster (4), several buck converters (5), controller (6), measurement of power loss device (7), DC-AC converter (8) and if
The input terminal of dry cooling mechanism (9), the DC booster (4) and the buck converter (5) is defeated with the direct current respectively
Enter circuit (2) to connect with the output end of the controller (6), and the DC booster (4) and the buck converter (5) are simultaneously
The output end of connection, the DC booster (4) and the buck converter (5) and the measurement of power loss device (7) and the direct current
A-c transducer (8) input terminal connects, and measurement of power loss device (7) output end is connect with the controller (6) input terminal, described
Controller (6) output end is connect with the DC-AC converter (8) input terminal, DC-AC converter (8) output end
It is connect with the AC network (3).
2. a kind of high-frequency photovoltaic inverter according to claim 1, which is characterized in that be equipped at the top of the box body (1)
The box cover of flexible connection.
3. a kind of high-frequency photovoltaic inverter according to claim 1, which is characterized in that the DC booster (4) and
The buck converter (5) is symmetrically disposed on the box body (1) interior side.
4. a kind of high-frequency photovoltaic inverter according to claim 1, which is characterized in that the cooling mechanism (9) is at least
Setting four, and four cooling mechanism (9) settings are in the internal quadrangle of the box body (1).
5. a kind of high-frequency photovoltaic inverter according to claim 1, which is characterized in that the cooling mechanism (9) includes
Two wind turbines, the wind turbine outside is equipped with isolating frame, and the cooling mechanism (9) surface is equipped with insulating layer.
6. a kind of high-frequency photovoltaic inverter according to claim 1, which is characterized in that the DC booster (4) and
The buck converter (5) is respectively provided with three, and the DC booster (4) and the buck converter (5) are arranged in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721810938.5U CN207625454U (en) | 2017-12-22 | 2017-12-22 | A kind of high-frequency photovoltaic inverter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721810938.5U CN207625454U (en) | 2017-12-22 | 2017-12-22 | A kind of high-frequency photovoltaic inverter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207625454U true CN207625454U (en) | 2018-07-17 |
Family
ID=62821364
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721810938.5U Active CN207625454U (en) | 2017-12-22 | 2017-12-22 | A kind of high-frequency photovoltaic inverter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207625454U (en) |
-
2017
- 2017-12-22 CN CN201721810938.5U patent/CN207625454U/en active Active
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