CN205961052U - Photovoltaic power supply system - Google Patents
Photovoltaic power supply system Download PDFInfo
- Publication number
- CN205961052U CN205961052U CN201620381198.7U CN201620381198U CN205961052U CN 205961052 U CN205961052 U CN 205961052U CN 201620381198 U CN201620381198 U CN 201620381198U CN 205961052 U CN205961052 U CN 205961052U
- Authority
- CN
- China
- Prior art keywords
- converter
- load
- power supply
- connects
- pfc unit
- 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 - Fee Related
Links
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 208000008425 Protein Deficiency Diseases 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000000630 rising Effects 0.000 description 1
- 230000000087 stabilizing Effects 0.000 description 1
Classifications
-
- 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
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
Abstract
The utility model provides a photovoltaic power supply system, including photovoltaic cell, single -phase commercial power, a DC the DC converter, the PFC unit, DC the AC dc -to -ac converter, the 2nd DC the DC converter, alternating load and the DC load, does photovoltaic cell connect a DC the DC converter, a DC is DC connected respectively to the DC converter AC dc -to -ac converter and the 2nd DC the DC converter, single -phase mains connection PFC unit, is DC connected respectively to the PFC unit AC dc -to -ac converter and the 2nd DC the DC converter, DC AC dc -to -ac converter connection alternating load, the 2nd DC DC converter connection the DC load, the utility model relates to a rationally, convenient to use, system stability is strong, and the power supply is stable, and is pollution -free, can continuously supply power, has utilized clean energy, has fine application prospect.
Description
Technical field
This utility model is related to and in particular to a kind of photovoltaic power supply system.
Background technology
With the fast development of World Economics, traditional fossil energy is as non-renewable energy resources just
Increasingly depleted, its caused environmental pollution is also increasingly serious.In order to solve problem above, real
Existing sustainable development is it is necessary to search out preferable alternative energy source.Renewable Energy Resources are unlimited,
Widely distributed, reusable edible, the many merits such as free from environmental pollution are widely closed by increasingly
Note, is the preferable alternative energy source of the current fossil energy widely applied, before having wide development
Scape.
Utility model content
The purpose of this utility model is for solving above-mentioned deficiency, providing a kind of photovoltaic power supply system.
The purpose of this utility model is achieved through the following technical solutions：
A kind of photovoltaic power supply system, including photovoltaic cell, single-phase civil power, a DC-DC conversion
Device, PFC unit, DC-AC inverter, the second DC-DC converter, AC load and direct current
Load, photovoltaic cell connects the first DC-DC converter, and the first DC-DC converter connects respectively
Connect DC-AC inverter and the second DC-DC converter, single-phase city electrically connects PFC unit, PFC
Unit connects DC-AC inverter and the second DC-DC converter respectively, and DC-AC inverter is even
Connect AC load, the second DC-DC converter connects DC load.
PFC unit adopts wide variety of Boost, is operated in continuous current mode mould
Formula.
First DC-DC converter is identical structure with the second DC-DC converter.
First DC-DC converter and the second DC-DC converter adopt two-stage type structure.
This utility model has following beneficial effect：
This utility model is reasonable in design, easy to use, and system stability is strong, and power supply is stable, no
Pollution, can continued power, make use of clean energy resource, have good application prospect.
Brief description
Fig. 1 is overall structure diagram of the present utility model；
Fig. 2 is circuit diagram of the present utility model.
Specific embodiment
Below in conjunction with the accompanying drawings this utility model is further described：
As shown in figure 1, a kind of photovoltaic power supply system, including photovoltaic cell 1, single-phase civil power 2,
First DC-DC converter 3, PFC unit 4, DC-AC inverter 5, the 2nd DC-DC conversion
Device 6, AC load 7 and DC load 8, photovoltaic cell 1 connects the first DC-DC converter 3,
First DC-DC converter 3 connects DC-AC inverter 5 and the second DC-DC converter 6 respectively,
Single-phase civil power 2 connects PFC unit 4, and PFC unit 4 connects DC-AC inverter 5 and second respectively
DC-DC converter 6, DC-AC inverter 5 connects AC load 7, the second DC-DC converter
6 connection DC loads 8.
PFC unit adopts wide variety of Boost, is operated in continuous current mode mould
Formula.
First DC-DC converter is identical structure with the second DC-DC converter.
First DC-DC converter and the second DC-DC converter adopt two-stage type structure.
Two-stage type DC-DC converter：In two-stage type structure, first order DC-DC converter is not
Stable photovoltaic output DC voltage is transformed into galvanic current pressure, realizes rising simultaneously
Pressure and MPPT function；The second level, stable boost in voltage to 380V, is realized electrically simultaneously
Isolation.According to the requirement of system, first order DC-DC converter will using Boost
The output voltage of solar cell is raised to 100V, and second level DC-DC converter adopts full bridge structure
Commutator transformer (DC Transformer, DCX), voltage is risen to 380V.DCX adopts
Sofe Switch can be realized with phase shifting control, and it is full duty cycle, so the effect of DCX
Rate can optimize.
System operating mode I：The peak power output of solar cell is more than load power demand；
DC-DC converter is controlled to be operated in voltage stabilizing state, control DC bus-bar voltage is 380V, too
Positive electricity pond provides load power demand, this mode power factor correction converter
(Power Factor Correction, PFC) does not work.
System operating mode II：The peak power output of solar cell is less than load power demand；
DC-DC converter is controlled to be operated in MPPT state, PFC work, provides underpower simultaneously,
And control DC bus-bar voltage to be 380V.
System operating mode III：Solar cell cannot work；Close DC-DC converter, PFC
Work independently, civil power provides load power demand, and controls DC bus-bar voltage to be 380V.
Claims (4)
1. a kind of photovoltaic power supply system, including photovoltaic cell, single-phase civil power, a DC-DC conversion
Device, PFC unit, DC-AC inverter, the second DC-DC converter, AC load
With DC load it is characterised in that：Photovoltaic cell connects the first DC-DC converter, the
One DC-DC converter connects DC-AC inverter and the second DC-DC converter respectively,
Single-phase city electrically connects PFC unit, and PFC unit connects DC-AC inverter and the respectively
Two DC-DC converter, DC-AC inverter connects AC load, and the 2nd DC-DC becomes
Parallel operation connects DC load.
2. a kind of photovoltaic power supply system according to claim 1 it is characterised in that：Described
PFC unit adopts wide variety of Boost, is operated in continuous current mode mould
Formula.
3. a kind of photovoltaic power supply system according to claim 1 it is characterised in that：Described
First DC-DC converter is identical structure with the second DC-DC converter.
4. a kind of photovoltaic power supply system according to claim 3 it is characterised in that：Described
First DC-DC converter and the second DC-DC converter adopt two-stage type structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620381198.7U CN205961052U (en) | 2016-04-28 | 2016-04-28 | Photovoltaic power supply system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620381198.7U CN205961052U (en) | 2016-04-28 | 2016-04-28 | Photovoltaic power supply system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205961052U true CN205961052U (en) | 2017-02-15 |
Family
ID=57967248
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620381198.7U Expired - Fee Related CN205961052U (en) | 2016-04-28 | 2016-04-28 | Photovoltaic power supply system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205961052U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109412136A (en) * | 2018-11-21 | 2019-03-01 | 扬州大学 | A kind of mesolow DC power-supply system stabilising arrangement and its control method |
-
2016
- 2016-04-28 CN CN201620381198.7U patent/CN205961052U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109412136A (en) * | 2018-11-21 | 2019-03-01 | 扬州大学 | A kind of mesolow DC power-supply system stabilising arrangement and its control method |
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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: 20170215 Termination date: 20170428 |