CN208226583U - A kind of miniature photovoltaic grid-connected inverter - Google Patents
A kind of miniature photovoltaic grid-connected inverter Download PDFInfo
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- CN208226583U CN208226583U CN201820546181.1U CN201820546181U CN208226583U CN 208226583 U CN208226583 U CN 208226583U CN 201820546181 U CN201820546181 U CN 201820546181U CN 208226583 U CN208226583 U CN 208226583U
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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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- 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
- Y02E40/40—Arrangements for reducing harmonics
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Abstract
This application provides a kind of miniature photovoltaic grid-connected inverters, under the premise of not changing inverter overall volume, by the optimization of topology, reduce the ripple of output；Improve the reliability of inverter.Specifically, the inverter includes: the first translation circuit module, frequency modulation envelope signal will be converted to from the received low dc voltage of photovoltaic module through flyback transformer；Second filter module, the frequency modulation envelope signal to generate the first translation circuit module are filtered to obtain steamed bun wave；Third translation circuit module is converted into satisfactory sine wave alternating current, is delivered to power grid the received steamed bun wave is passed through full-bridge inverting；Wherein, the input terminal of first translation circuit module is electrically connected with electric capacity of voltage regulation.It is optimized by the topology to circuit, reduces the ripple of output, using the Miniature inverter of this programme, output ripple is typically not greater than 2%.
Description
Technical field
The utility model relates to a kind of inverters, more particularly to a kind of miniature photovoltaic grid-connected inverter.
Background technique
The waveform of the output electric current of gird-connected inverter usually has mismatch with the waveform of power network current, always humorous usually using parameter
Wave distortion (Total Harmonic Distortion, THD) defines.Total harmonic distortion THD definition mode is to input single frequency
The square root of the ratio between the cosine signal of rate, the total virtual value of each harmonic of output and fundamental power virtual value.In order to guarantee power grid
Stabilization and the electric current of inverter effectively enter power grid, THD is usually required that less than 5%.
The current ripples of existing miniature photovoltaic grid-connected inverter output are larger, sometimes more than 5%, with grid-connected requirement
It is more and more harsh, to limit the application scenarios of miniature photovoltaic grid-connected inverter.
Utility model content
The purpose of this utility model aims to solve at least one of described technological deficiency.Based on the above issues, in order to meet simultaneously
The requirement of net, the utility model provide a kind of Miniature inverter, and the ripple of output is reduced while meeting grid-connected.The utility model
It adopts the following technical scheme that
A kind of miniature photovoltaic grid-connected inverter, it is characterised in that: the first translation circuit module is included, to will be from photovoltaic
The received low dc voltage of component is converted to frequency modulation envelope signal through flyback transformer；Second filter module, to become first
The frequency modulation envelope signal for changing circuit module generation is filtered to obtain steamed bun wave；Third translation circuit module, to will be received
The steamed bun wave passes through full-bridge inverting, is converted into satisfactory sine wave alternating current, is delivered to power grid；Wherein, described first
The input terminal of translation circuit module is electrically connected with electric capacity of voltage regulation.
Preferably, which includes the first flyback transformer and the second flyback transformer, is electrically connected
To the first photovoltaic module, the second photovoltaic module；First flyback transformer receives the low straight of the first photovoltaic module transmission
Galvanic electricity presses and is converted to the first frequency modulation envelope signal；Second flyback transformer receives the low of the second photovoltaic module transmission
DC voltage is simultaneously converted to the second frequency modulation envelope signal；
Wherein, the first frequency modulation envelope signal, the second frequency modulation envelope signal are defeated respectively after the filtering of the second filter module
Enter to third translation circuit module；The third translation circuit module adjusts the received first frequency modulation envelope signal and second
Frequency envelope signal is converted into satisfactory sine wave alternating current by full-bridge inverting, is delivered to power grid.
Preferably, the primary side winding inductance of first flyback transformer of the inverter and second flyback transformer
Branch be serially connected with switch respectively；One end of the vice-side winding of first flyback transformer is electrically connected to the sun of diode
Pole, the cathode of the diode are electrically connected to one end of inductance and one end of first capacitor；The other end of the inductance is electrical
It is connected to one end of the second capacitor；The other end of the first capacitor and second capacitor is connected to secondary side after being electrically connected
The other end of winding；Wherein, one end of second capacitor and the other end are electrically connected to third translation circuit module.
Preferably, the primary side winding inductance of first flyback transformer of the inverter and second flyback transformer
Branch be serially connected with switch respectively；One end of the vice-side winding of second flyback transformer is electrically connected to the sun of diode
Pole, the cathode of the diode are electrically connected to one end of inductance and one end of third capacitor；The other end of the inductance is electrical
It is connected to one end of the 4th capacitor；The other end of the third capacitor and the 4th capacitor is connected to secondary side after being electrically connected
The other end of winding；Wherein, one end of the 4th capacitor and the other end are electrically connected to third translation circuit module.
Preferably, the flyback transformer of the inverter include the first flyback transformer, the second flyback transformer, point
It is not electrically connected to the photovoltaic module；First flyback transformer connects, described in the staggered receipts of second flyback transformer
The low dc voltage of photovoltaic module transmission is simultaneously converted to frequency modulation envelope signal and is separately input into the after the filtering of the second filter module
Three translation circuit modules are converted into satisfactory sine wave alternating current and are delivered to power grid.
Preferably, the primary side winding inductance of first flyback transformer of the inverter and second flyback transformer
Branch be serially connected with switch respectively；One end of the vice-side winding of first flyback transformer is electrically connected to the sun of diode
Pole, the cathode of the diode are electrically connected to one end of inductance and one end of the 5th capacitor, and the other end of the inductance is electrical
Be connected to one end of the 6th capacitor, the other end of the 5th capacitor and the 6th capacitor be connected to after being electrically connected secondary side around
The other end of group；Wherein, one end of the 6th capacitor and the other end are electrically connected to third translation circuit module.
Preferably, the primary side winding inductance of first flyback transformer of the inverter and second flyback transformer
Branch be serially connected with switch respectively；One end of the vice-side winding of second flyback transformer is electrically connected to the sun of diode
Pole, the cathode of the diode are electrically connected to one end of inductance and one end of the 7th capacitor, and the other end of the inductance is electrical
Be connected to one end of the 8th capacitor, the other end of the 7th capacitor and the 8th capacitor be connected to after being electrically connected secondary side around
The other end of group；Wherein, the one end and the other end of the 8th capacitor is electrically connected to third translation circuit module.
Preferably, the inductance value of the inductance of the inverter is between 10uH--500uH.
Preferably, the inverter includes control module, is configured at the inside of miniature photovoltaic grid-connected inverter, described
Control module is configured with IOT module, the information of acquisition is transferred to the monitoring device being attached thereto or server.
Preferably, which includes filter unit, is electrically connected to the third translation circuit module, receives described the
Three translation circuit modules transmission information and filtering, for reducing the ripple of output signal；Wherein the filter unit includes electricity
Sense, capacitor；One end of the capacitor is electrically to the third translation circuit module and one end of the inductance；The capacitor it is another
One end is electrically connected to the third translation circuit module and power grid；The other end of the inductance is electrically connected to power grid.
The advantages of scheme in compared with the existing technology, the utility model:
This application provides a kind of new micro inverter schemes, are improved for existing Miniature inverter,
1. optimizing by the topology to circuit, the ripple of output is reduced, it is defeated using the Miniature inverter of this programme
Ripple is typically not greater than 2% out；
2. optimizing the design of circuit board by the adjustment of the optimization to module, the overall effect of system is improved；
3.: IOT module is configured by the intrinsic control model to Miniature inverter, timely passes the information of acquisition
It is handed to the monitoring device being attached thereto or server.
Detailed description of the invention
The utility model is further described with reference to the accompanying drawings and embodiments:
Fig. 1 is the functional block diagram of the Miniature inverter of the utility model embodiment generated electricity by way of merging two or more grid systems；
Fig. 2 is the topological schematic diagram of the Miniature inverter of the utility model embodiment；
Fig. 3 is the topological schematic diagram of the Miniature inverter of another embodiment of the utility model；
Fig. 4,5,6 illustrate for the topology of the filter unit of the Miniature inverter of the utility model embodiment.
Specific embodiment
Above scheme is described further below in conjunction with specific embodiment.It should be understood that these embodiments are for illustrating
The utility model and be not limited to limitation the scope of the utility model.Implementation condition used in the examples can be according to specific producer
Condition do further adjustment, the implementation condition being not specified is usually the condition in routine experiment.The waterproofing grade of inverter is
IP67 or more.
Embodiment:
It is as shown in Figure 1 the structural schematic diagram of Miniature inverter to generate electricity by way of merging two or more grid systems.The topological structure of inverter 10 includes
First translation circuit module 11, frequency modulation envelope will be converted to from the received low dc voltage of photovoltaic module through flyback transformer
Signal；Second filter module 12, the frequency modulation envelope signal to generate the first translation circuit module are filtered to obtain steamed bun
Wave；Third translation circuit module 13 is converted into satisfactory sine the received steamed bun wave is passed through full-bridge inverting
Alternating current wave is delivered to power grid；Wherein, the input terminal of first translation circuit module is electrically connected with electric capacity of voltage regulation and (schemes not
Show).In the present solution, the low dc voltage of photovoltaic module output is generally between 20V -50V.Its output is possibly connected to load
And power grid.
Next the grid connection topology schematic diagram of Miniature inverter is described in conjunction with Fig. 2 and 3；
As shown in Fig. 2, the topological structure to generate electricity by way of merging two or more grid systems of (inverse-excitation type) Miniature inverter for the utility model embodiment
Schematic diagram；Flyback type miniature inverter is from photovoltaic module PV1, and the received low dc voltage of PV2 through passing through transformer 22,32 respectively
Transformation, the branch of 22,32 primary side winding inductance of transformer be serially connected with respectively switch 23,33 (in practical application, switch 23,
Parasitic diode is had between 33 source terminal and drain electrode end), in one embodiment in the source terminal and drain electrode end of the switch 23,33
Between and be connected with capacitor, the capacitor with for resonant capacitance, for and primary side main inductance and primary side leakage inductance resonance)；Transformer 22,
The winding branch on 32 secondary sides is serially connected with diode 24,34 respectively；Two output ends of the secondary side of transformer are electrically connected to respectively
Inversion unit, (full bridge unit of 4 switch S1-S4 composition) satisfactory electric energy is transmitted to electricity after inversion unit inversion
Net AC.
One end of the winding branch on the secondary side of transformer 22,32 is serially connected with diode 24,34 respectively；Wherein 22 secondary sides
One end of winding branch is electrically connected to the anode of diode 24, and the cathode of diode 24 is electrically connected to one end of inductance 25,
The other end of inductance 25 is electrically connected to one end of capacitor 27 (the second capacitor) and the drain electrode end of first switch S1, capacitor 27 it is another
One end is electrically connected to the other end of the winding branch on 22 secondary sides and the source terminal of second switch S2；The cathode of diode 24 connects
One end of capacitor 26 (first capacitor), the other end of capacitor 26 are connected to the other end of the winding branch on 22 secondary sides.Wherein 32 is secondary
One end of the winding branch on side is electrically connected to the anode of diode 34, and the cathode of diode 34 is electrically connected to inductance 35
One end, the other end of inductance 35 are electrically connected to one end of capacitor 37 (the 4th capacitor) and the drain electrode end of first switch S1；Capacitor
27 other end is electrically connected to the other end of the winding branch on 22 secondary sides and the source terminal of second switch S2；The yin of diode 34
Pole connects the one end of capacitor 36 (third capacitor), and the other end of capacitor 36 is connected to the other end of the winding branch on 32 secondary sides.It is logical
Such design is crossed so that the current ripples that the high-frequency signal exports after inversion unit inversion are far below grid-connected requirement, same
The harmonic wave THD of this programme is no more than 2% Deng under conditions of.In the present solution, transformer is otherwise referred to as flyback transformer.
In above scheme, inductance 25,35 chooses 10uH--500uH, preferably selection 50uH--200uH.It can in this programme
Choose 50uH, 100uH, 200uH.Also referred to as the first flyback transformer of transformer 22,32, the second flyback transformer, when implementing,
Same iron core winding can be passed through.Inductance 25, capacitor 26,27 are configured to pi type filter.Frequency modulation envelope signal is also referred to as high-frequency signal.
4 switches S1, S2, S3, S4 of inversion unit and switch 23,33 are driven by driving circuit respectively in above scheme
It is dynamic, it is driven using the PWM of this field routine, no longer detailed elaboration herein.The usual received information of inversion unit is high frequency letter
Number, frequency is between 100KHz--500KHz.Switch S1, S2, S3, S4 selection switch mosfet, IGBT switch, thyristor,
Pressure-resistant parameter chooses 1000V.
In above-mentioned scheme, inversion unit uses the full-bridge inverting of 4 switches S1, S2, S3, S4；Wherein, first switch S1
It is electrically in parallel with third switch S3 with the branch of the 4th switch S4 electrical series with the branch of second switch S2 electrical series；First
The second of the first output point and third switch S3 and the 4th switch S4 electric connection that switch S1 and second switch S2 is electrically connected
Output point is electrically connected to power grid.
Resonant capacitance in above scheme chooses 1nf~10nf；Selection 2nf in the present embodiment.The selection of capacitor is pasted
Sheet capacitor.
It is connected with capacitor at the end of photovoltaic module output, chooses electrolytic capacitor or thin-film capacitor.Preferably choose film
Capacitor.
As shown in figure 3, for the utility model second embodiment (inverse-excitation type) Miniature inverter generate electricity by way of merging two or more grid systems open up
Flutter structural schematic diagram；Flyback type miniature inverter is from the received low dc voltage of photovoltaic module PV through passing through flyback transformer respectively
It is delivered to inversion unit respectively after 42a, 42b transformation, is transmitted to power grid AC after the inversion unit inversion.
Wherein, 41 be decoupling capacitance, and switch 43a, 43b are respectively flyback transformer 42a, the main switch of 42b, diode
44a, 44b, capacitor 46a (the 5th capacitor), capacitor 46b (the 7th capacitor) are respectively that the output end of crisscross parallel flyback converter is whole
Flow diode and filter capacitor；
The branch of transformer 42a, 42b primary side winding inductance is serially connected with switch 43a respectively, 43b (in practical application,
Parasitic diode is had between the source terminal and drain electrode end of switch 43a, 43b), in one embodiment in the source of switch 43a, 43b
Extremely between drain electrode end and be connected with capacitor, the capacitor with for resonant capacitance, for and primary side main inductance and primary side leakage inductance it is humorous
Vibration)；The winding branch on transformer 42a, 42b pair side is serially connected with diode 44a, 44b respectively；The two of the secondary side of transformer are defeated
Outlet is electrically connected to inversion unit respectively, and (full bridge unit of 4 switch S1-S4 composition) conforms to after inversion unit inversion
The electric energy asked is transmitted to power grid AC.
One end of the winding branch on transformer 42a, 42b pair side is serially connected with diode 44a, 44b respectively；Wherein 42a pair
One end of the winding branch on side is electrically connected to the anode of diode 44a, and the cathode of diode 44a is electrically connected to inductance 45a
One end, the other end of inductance 45a is electrically connected to one end of capacitor 47a (the 6th capacitor) and the drain electrode end of first switch S1；
The other end of capacitor 47a is electrically connected to the other end of the winding branch on 42a pair side and the source terminal of second switch S2；Diode
One end of the cathode connection capacitor 46a of 44a, the other end of capacitor 46a are connected to the other end of the winding branch on 42a pair side.Its
One end of the winding branch on middle 42b pair side is electrically connected to the anode of diode 44b, and the cathode of diode 44b is electrically connected to
One end of inductance 45b, the other end of inductance 45b are electrically connected one end of capacitor 47b and the drain electrode end of first switch S1, capacitor
The other end of 47b (the 8th capacitor) is electrically connected to the other end of the winding branch on 42b pair side and the source terminal of second switch S2；
One end of the cathode connection capacitor 46b of diode 44b, the other end of capacitor 46b are connected to the another of the winding branch on 42b pair side
One end.Design in this way is so that the current ripples that the high-frequency signal exports after inversion unit inversion are wanted far below grid-connected
It asks, the harmonic wave THD of this programme is no more than 2% under comparable conditions.Transformer 42a, 42b are also referred to as the first flyback transformer, the
Two flyback transformers.
In one embodiment, it is as shown in Figure 4-Figure 6 to export to filter unit its topology for inversion unit.
As shown in figure 4, being the topological schematic diagram of a filter unit.Filter unit 400 includes capacitor 47, inductance 48, inductance
48 one end are electrically to the end a, and the other end of inductance 48 is connected to and one end of capacitor 47 and power grid one end；The other end electricity of capacitor 47
Property is connected to the end b and power grid one end；The end a and the end b are electrically connected to 2 output ends of inversion unit (that is, second translation circuit).
As shown in figure 5, being the topological schematic diagram of another filter unit.The topology of filter unit 500 and Fig. 4, which is distinguished, to be,
The other end of inductance 48 is electrically connected to power grid after fuse 49.Reliability is further increased in this way.
As shown in fig. 6, being the topological schematic diagram of another filter unit.The topology of filter unit 600 and Fig. 5, which is distinguished, to be,
Work mould inductance is electrically connected with before capacitor 47.Such further ripple for reducing output of design.Further increasing in this way can
By property.
The numerical value of filter capacitor is chosen: 1nF to 0.2uF
The numerical value of filter inductance is chosen: preferably selection 2mH.
In above scheme, the ontology (also referred to as body housing) of Miniature inverter, using aluminium material structure or high thermal conductivity plastics.
Be conducive to mitigate the weight of Miniature inverter in this way, while having splendid heat dissipation effect concurrently.
In above scheme, the driving circuit of inverter includes control module, will timely be adopted configured with IOT module thereon
The information of collection is transferred to the monitoring device being attached thereto or server.
The above embodiments are only for explaining the technical ideas and features of the present invention, and its object is to allow be familiar with technique
People be that can understand the content of the utility model and implement accordingly, do not limit the protection scope of the present invention.
It is all according to the spirit of the present invention substantially equivalent transformation that is done or modification, should all cover the protection scope of the utility model it
It is interior.
Claims (10)
1. a kind of miniature photovoltaic grid-connected inverter, it is characterised in that: the first translation circuit module is included, to will be from photovoltaic group
The received low dc voltage of part is converted to frequency modulation envelope signal through flyback transformer；Second filter module, to be converted first
The frequency modulation envelope signal that circuit module generates is filtered to obtain steamed bun wave；Third translation circuit module, to by received institute
Steamed bun wave is stated by full-bridge inverting, satisfactory sine wave alternating current is converted into, is delivered to power grid；Wherein, described first becomes
The input terminal for changing circuit module is electrically connected with electric capacity of voltage regulation.
2. miniature photovoltaic grid-connected inverter as described in claim 1, which is characterized in that the flyback transformer includes first anti-
Violent change depressor and the second flyback transformer are respectively and electrically connected to the first photovoltaic module, the second photovoltaic module；Described first is anti-
Violent change depressor receives the low dc voltage of the first photovoltaic module transmission and is converted to the first frequency modulation envelope signal；Described second
Flyback transformer receives the low dc voltage of the second photovoltaic module transmission and is converted to the second frequency modulation envelope signal；
Wherein, the first frequency modulation envelope signal, the second frequency modulation envelope signal are separately input into after the filtering of the second filter module
Third translation circuit module；The third translation circuit module is by the received first frequency modulation envelope signal and the second frequency modulation packet
Network signal is converted into satisfactory sine wave alternating current by full-bridge inverting, is delivered to power grid.
3. miniature photovoltaic grid-connected inverter as claimed in claim 2, which is characterized in that first flyback transformer and described
The branch of the primary side winding inductance of second flyback transformer is serially connected with switch respectively；The secondary side of first flyback transformer around
One end of group is electrically connected to the anode of diode, and the cathode of the diode is electrically connected to one end and the first capacitor of inductance
One end；The other end of the inductance is electrically connected to one end of the second capacitor；The first capacitor and second capacitor
The other end be electrically connected after be connected to the other end of vice-side winding；Wherein, one end of second capacitor and other end electricity
Property is connected to third translation circuit module.
4. miniature photovoltaic grid-connected inverter as claimed in claim 3, which is characterized in that
The branch of the primary side winding inductance of first flyback transformer and second flyback transformer is serially connected with out respectively
It closes；One end of the vice-side winding of second flyback transformer is electrically connected to the anode of diode, the cathode of the diode
It is electrically connected to one end of inductance and one end of third capacitor；The other end of the inductance is electrically connected to the one of the 4th capacitor
End；The other end of the third capacitor and the 4th capacitor is connected to the other end of vice-side winding after being electrically connected；Wherein,
One end of 4th capacitor and the other end are electrically connected to third translation circuit module.
5. miniature photovoltaic grid-connected inverter as described in claim 1, which is characterized in that the flyback transformer includes first anti-
Violent change depressor, the second flyback transformer are respectively and electrically connected to the photovoltaic module；First flyback transformer connects, institute
It states the staggered low dc voltage for receiving photovoltaic module transmission of the second flyback transformer and is converted to frequency modulation envelope signal through the
It is separately input into third translation circuit module after the filtering of two filter modules, satisfactory sine wave alternating current is converted into and conveys
To power grid.
6. miniature photovoltaic grid-connected inverter as claimed in claim 5, which is characterized in that first flyback transformer and described
The branch of the primary side winding inductance of second flyback transformer is serially connected with switch respectively；The secondary side of first flyback transformer around
One end of group is electrically connected to the anode of diode, and the cathode of the diode is electrically connected to one end and the 5th capacitor of inductance
One end, the other end of the inductance is electrically connected to one end of the 6th capacitor, the 5th capacitor and the 6th capacitor
The other end is connected to the other end of vice-side winding after being electrically connected；Wherein, one end of the 6th capacitor and the other end are electrical
It is connected to third translation circuit module.
7. miniature photovoltaic grid-connected inverter as claimed in claim 6, which is characterized in that first flyback transformer and described
The branch of the primary side winding inductance of second flyback transformer is serially connected with switch respectively；The secondary side of second flyback transformer around
One end of group is electrically connected to the anode of diode, and the cathode of the diode is electrically connected to one end and the 7th capacitor of inductance
One end, the other end of the inductance is electrically connected to one end of the 8th capacitor, the 7th capacitor and the 8th capacitor
The other end is connected to the other end of vice-side winding after being electrically connected；Wherein, the one end and the other end of the 8th capacitor electrically connects
It is connected to third translation circuit module.
8. such as claim 3, miniature photovoltaic grid-connected inverter described in any one of 4,6,7, which is characterized in that the inductance
Inductance value is between 10uH--500uH.
9. miniature photovoltaic grid-connected inverter as described in claim 1, which is characterized in that include control module, be configured at
The inside of miniature photovoltaic grid-connected inverter, the control module is configured with IOT module, the information of acquisition to be transferred to therewith
The monitoring device or server of connection.
10. miniature photovoltaic grid-connected inverter as described in claim 1, which is characterized in that include filter unit, be electrically connected to
The third translation circuit module receives the information of the third translation circuit module transmission and filtering, for reducing output letter
Number ripple；Wherein the filter unit includes inductance, capacitor；One end of the capacitor is electrically to the third translation circuit mould
One end of block and the inductance；The other end of the capacitor is electrically connected to the third translation circuit module and power grid；It is described
The other end of inductance is electrically connected to power grid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820546181.1U CN208226583U (en) | 2018-04-17 | 2018-04-17 | A kind of miniature photovoltaic grid-connected inverter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820546181.1U CN208226583U (en) | 2018-04-17 | 2018-04-17 | A kind of miniature photovoltaic grid-connected inverter |
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| Publication Number | Publication Date |
|---|---|
| CN208226583U true CN208226583U (en) | 2018-12-11 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115995986A (en) * | 2023-03-24 | 2023-04-21 | 安徽微伏特电源科技有限公司 | Series-parallel flyback boost circuit topology with triangular structure |
-
2018
- 2018-04-17 CN CN201820546181.1U patent/CN208226583U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115995986A (en) * | 2023-03-24 | 2023-04-21 | 安徽微伏特电源科技有限公司 | Series-parallel flyback boost circuit topology with triangular structure |
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