CN205961052U - Photovoltaic power supply system - Google Patents

Photovoltaic power supply system Download PDF

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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
Application number
CN201620381198.7U
Other languages
Chinese (zh)
Inventor
郭志远
和建平
张强
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Haiyang Power Supply Co of State Grid Shandong Electric Power Co Ltd
Original Assignee
Haiyang Power Supply Co of State Grid Shandong Electric Power Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Haiyang Power Supply Co of State Grid Shandong Electric Power Co Ltd filed Critical Haiyang Power Supply Co of State Grid Shandong Electric Power Co Ltd
Priority to CN201620381198.7U priority Critical patent/CN205961052U/en
Application granted granted Critical
Publication of CN205961052U publication Critical patent/CN205961052U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/50Photovoltaic [PV] energy
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P80/00Climate change mitigation technologies for sector-wide applications
    • Y02P80/10Efficient 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

A kind of photovoltaic power supply system
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.
CN201620381198.7U 2016-04-28 2016-04-28 Photovoltaic power supply system Expired - Fee Related CN205961052U (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (1)

* Cited by examiner, † Cited by third party
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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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