CN106100095A - Photovoltaic inversion energy storage system capable of avoiding frequent charge and discharge switching - Google Patents
Photovoltaic inversion energy storage system capable of avoiding frequent charge and discharge switching Download PDFInfo
- Publication number
- CN106100095A CN106100095A CN201610457791.XA CN201610457791A CN106100095A CN 106100095 A CN106100095 A CN 106100095A CN 201610457791 A CN201610457791 A CN 201610457791A CN 106100095 A CN106100095 A CN 106100095A
- Authority
- CN
- China
- Prior art keywords
- unit
- electrically
- photovoltaic
- connects
- circuit
- 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.)
- Pending
Links
- 238000004146 energy storage Methods 0.000 title claims abstract description 27
- 238000006243 chemical reaction Methods 0.000 claims abstract description 18
- 238000010248 power generation Methods 0.000 abstract description 4
- 230000002457 bidirectional effect Effects 0.000 abstract 2
- 238000005070 sampling Methods 0.000 abstract 1
- 238000005286 illumination Methods 0.000 description 5
- 230000005611 electricity Effects 0.000 description 4
- 230000007812 deficiency Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/35—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering with light sensitive cells
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses a photovoltaic inversion energy storage system for avoiding frequent charge-discharge switching, which does not comprise a photovoltaic power generation assembly, wherein the electrical output of the photovoltaic power generation assembly is connected with a direct current storage unit, the electrical output of the direct current storage unit is connected with a photovoltaic cell control unit, the electrical output of the photovoltaic cell control unit is connected with a power conversion unit, the electrical output of the power conversion unit is connected with an A/D conversion unit, the electrical output of the A/D conversion unit is connected with a circuit bus system, the electrical input of the circuit bus system is connected with a bidirectional power conversion unit, the electrical input of the bidirectional power conversion unit is connected with a storage battery pack, the electrical input of the storage battery pack is connected with a DC-DC converter, the electrical output of the DC-DC converter is connected with a solar photovoltaic power generation panel, the electrical output of the circuit bus, and the grid-connected inverter unit is respectively and electrically connected with the alternating current power grid, the local load end, the driving circuit and the sampling circuit in an output mode.
Description
Technical field
The present invention relates to technical field of photovoltaic power generation, a kind of photovoltaic inversion energy storage avoiding frequent discharge and recharge to switch
System.
Background technology
In current photovoltaic generating system, in the case of having illumination by day, photovoltaic DC-to-AC converter can generate electricity by way of merging two or more grid systems or from
Net provides electric energy to this locality load, with the need for electricity of satisfied local load, but, night unglazed according in the case of, this light
Volt inverter will quit work because of noenergy input, thus cannot meet the need for electricity of local load, in order to solve this
Problem, present stage is typically on the basis of this photovoltaic generating system to increase energy storage device, thus constitutes photovoltaic inversion energy storage system
System, to extend the working time of photovoltaic DC-to-AC converter, improves photovoltaic generation benefit, and concrete, the energy storage device increased includes storage
Energy battery and the DC-DC converter being connected with this energy-storage battery, and this DC-DC converter is with photovoltaic DC-to-AC converter input even
Connecing, in actual applications, after the unnecessary solar energy that photovoltaic battery panel produces will be changed by this DC-DC converter, storage is arrived
In this energy-storage battery, i.e. giving energy-storage battery charging process, when supplying power for photovoltaic cell deficiency, this energy-storage battery will be by this DC-
DC changer discharges, to meet electrical network or the need for electricity of local load, but, it has been investigated that, inverse for existing photovoltaic
Become energy-storage system, cause short-time rating to rise sharply when rapid drawdown in reasons such as sudden load change or photovoltaic battery panel shades, energy storage
Battery will carry out discharge and recharge switching continually, has had a strong impact on the energy-storage battery life-span, to this end, it is proposed that one is avoided frequently
The photovoltaic inversion energy-storage system of discharge and recharge switching.
Summary of the invention
It is an object of the invention to provide a kind of photovoltaic inversion energy-storage system avoiding frequent discharge and recharge to switch, on solving
State the problem proposed in background technology.
For achieving the above object, the present invention provides following technical scheme: a kind of photovoltaic avoiding frequent discharge and recharge to switch is inverse
Becoming energy-storage system, do not include photovoltaic electrification component, described photovoltaic electrification component electrically exports connection direct current storage stream unit, and direct current
Storage stream unit electrically exports connection photovoltaic cell control unit, and described photovoltaic cell control unit electrically exports connection power conversion
Unit, and power conversion unit electrically export connection A/D converting unit, described A/D converting unit electrically export connection circuit total
Wire system, and circuit bus system electrically input connection bi-directional power conversion unit, described bi-directional power conversion unit is the most defeated
Entering and connect accumulator battery, and accumulator battery electrically inputs connection DC-DC converter, described DC-DC converter electrically exports connection
Solar energy power generating plate, described circuit bus system electrically exports connection parallel network reverse unit, and parallel network reverse unit is respectively
Electrically output connects AC network, local load end, drive circuit and sample circuit, and it is main that described drive circuit electrically exports connection
Controlling unit, and main control unit electrically exports connection data acquisition unit, described data acquisition unit electrically exports connection data pair
Ratio unit, described sample circuit is connected in parallel voltage sensor and current sensor respectively.
Preferably, described Data Comparison unit includes current effective value reference unit and voltage effective value reference unit.
Preferably, described main control unit is single-chip microcomputer.
Compared with prior art, the invention has the beneficial effects as follows: originally avoid the photovoltaic inversion energy storage that frequent discharge and recharge switches
System, in actual applications, when illumination abundance, photovoltaic cell controls switch Guan Bi, this photovoltaic inversion branch road power, it is ensured that
Parallel network reverse unit normally works, and the solar energy power generating plate in the most corresponding energy storage branch road can be connected accumulator
Group charging, when unglazed according to or during illumination deficiency, photovoltaic cell controls switch and opens, accumulator controls switch Guan Bi, energy storage prop up
Accumulator battery electric discharge in road, to ensure that photovoltaic DC-to-AC converter normally works, effectively solves frequent discharge and recharge in photovoltaic generation
The leak of switching.
Accompanying drawing explanation
Fig. 1 is principle of the invention block diagram.
In figure: 1 photovoltaic electrification component, 2 direct current storage stream unit, 3 photovoltaic cell control units, 4 power conversion unit, 5A/D
Converting unit, 6 circuit bus systems, 7 accumulator batteries, 8 bi-directional power conversion unit, 9 parallel network reverse unit, 10 AC networks,
11 local load ends, 12 drive circuits, 13 main control units, 14 data acquisition units, 15 Data Comparison unit, 16 sample circuits,
17 voltage sensors, 18 current sensors, 19 solar energy power generating plates, 20DC-DC changer.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Describe, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole embodiments wholely.Based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under not making creative work premise
Embodiment, broadly falls into the scope of protection of the invention.
Referring to Fig. 1, the present invention provides a kind of technical scheme: a kind of photovoltaic inversion energy storage avoiding frequent discharge and recharge to switch
System, does not include photovoltaic electrification component 1, and described photovoltaic electrification component 1 electrically exports connection direct current storage stream unit 2, and direct current storage
Stream unit 2 electrically exports connection photovoltaic cell control unit 2, and described photovoltaic cell control unit 3 electrically exports connection power and becomes
Changing unit 4, and power conversion unit 4 electrically exports connection A/D converting unit 5, described A/D converting unit 5 electrically exports connection
Circuit bus system 6, and circuit bus system 6 electrically input connection bi-directional power conversion unit 8, described bi-directional power conversion list
Unit 8 electrically input connects accumulator battery 7, and accumulator battery 7 electrically inputs connection DC-DC converter 20, described DC-DC converter
20 electrically export connection solar energy power generating plate 19, and described circuit bus system 6 electrically exports connection parallel network reverse unit 9,
And parallel network reverse unit 9 the most electrically output connects AC network 10, local load end 11, drive circuit 12 and sample circuit
16, described drive circuit 12 electrically exports connection main control unit 13, and main control unit 13 is single-chip microcomputer, and main control unit 13 is the most defeated
Going out to connect data acquisition unit 14, described data acquisition unit 14 electrically exports connection Data Comparison unit 15, Data Comparison list
Unit 15 includes current effective value reference unit and voltage effective value reference unit, can effectively reference voltage and the numerical value of electric current,
Described sample circuit 16 is connected in parallel voltage sensor 17 and current sensor 18 respectively, it is to avoid the frequently photovoltaic of discharge and recharge switching
Inversion energy-storage system, in actual applications, when illumination abundance, photovoltaic cell controls switch 3 Guan Bi, by this photovoltaic inversion branch road
Power supply, it is ensured that parallel network reverse unit 9 normally works, the solar energy power generating plate in the most corresponding energy storage branch road can be with it even
The accumulator battery 7 connect is charged, and when unglazed photograph or illumination deficiency, photovoltaic cell controls switch 3 and opens, and accumulator controls switch and closes
Close, the accumulator battery 7 in energy storage branch road discharge, to ensure that photovoltaic DC-to-AC converter normally works, effectively solve photovoltaic generation
In the leak of frequent discharge and recharge switching.
Although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, permissible
Understand and these embodiments can be carried out multiple change without departing from the principles and spirit of the present invention, revise, replace
And modification, the scope of the present invention be defined by the appended.
Claims (3)
1. avoiding the photovoltaic inversion energy-storage system that frequent discharge and recharge switches, including photovoltaic electrification component (1), its feature exists
In: described photovoltaic electrification component (1) electrically exports and connects direct current storage stream unit (2), and unit (2) the electrically company of output is flowed in direct current storage
Connecing photovoltaic cell control unit (2), the electrically output of described photovoltaic cell control unit (3) connects power conversion unit (4), and merit
Rate converter unit (4) electrically output connects A/D converting unit (5), and it is total that the electrically output of described A/D converting unit (5) connects circuit
Wire system (6), and circuit bus system (6) electrically input connection bi-directional power conversion unit (8), described bi-directional power conversion list
Unit (8) electrically input connects accumulator battery (7), and accumulator battery (7) electrically input connects DC-DC converter (20), described DC-
DC changer (20) electrically output connects solar energy power generating plate (19), and described circuit bus system (6) electrically exports connection
Parallel network reverse unit (9), and parallel network reverse unit (9) respectively electrically output connect AC network (10), local load end (11),
Drive circuit (12) and sample circuit (16), described drive circuit (12) electrically output connects main control unit (13), and master control list
Unit (13) electrically output connects data acquisition unit (14), and described data acquisition unit (14) electrically output connects Data Comparison list
Unit (15), described sample circuit (16) is connected in parallel voltage sensor (17) and current sensor (18) respectively.
A kind of photovoltaic inversion energy-storage system avoiding frequent discharge and recharge to switch the most according to claim 1, it is characterised in that:
Described Data Comparison unit (15) includes current effective value reference unit and voltage effective value reference unit.
A kind of photovoltaic inversion energy-storage system avoiding frequent discharge and recharge to switch the most according to claim 1, it is characterised in that:
Described main control unit (13) is single-chip microcomputer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610457791.XA CN106100095A (en) | 2016-06-22 | 2016-06-22 | Photovoltaic inversion energy storage system capable of avoiding frequent charge and discharge switching |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610457791.XA CN106100095A (en) | 2016-06-22 | 2016-06-22 | Photovoltaic inversion energy storage system capable of avoiding frequent charge and discharge switching |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106100095A true CN106100095A (en) | 2016-11-09 |
Family
ID=57238988
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610457791.XA Pending CN106100095A (en) | 2016-06-22 | 2016-06-22 | Photovoltaic inversion energy storage system capable of avoiding frequent charge and discharge switching |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106100095A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107947727A (en) * | 2017-11-28 | 2018-04-20 | 苏州切思特电子有限公司 | A kind of photovoltaic generating system |
| CN108718185A (en) * | 2018-06-11 | 2018-10-30 | 黄河科技学院 | A kind of portable type solar energy utilizes device |
-
2016
- 2016-06-22 CN CN201610457791.XA patent/CN106100095A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107947727A (en) * | 2017-11-28 | 2018-04-20 | 苏州切思特电子有限公司 | A kind of photovoltaic generating system |
| CN108718185A (en) * | 2018-06-11 | 2018-10-30 | 黄河科技学院 | A kind of portable type solar energy utilizes device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101084214B1 (en) | Grid-connected energy storage system and method for controlling grid-connected energy storage system | |
| CN102104257B (en) | Energy storage system of apartment building, integrated power management system, and method of controlling the system | |
| CN108377009A (en) | Power supply system | |
| KR20130006427A (en) | Rapid charger | |
| CN108539841A (en) | Combination DC-DC converter for hybrid power source system | |
| CA2725623A1 (en) | Storage system that maximizes the utilization of renewable energy | |
| CN102111018A (en) | Energy storage system and method of controlling same | |
| JP3183815U (en) | Solar power supply system with multiple backups | |
| CN108365623A (en) | Electric vehicle changes the transmission system of electricity and energy storage station | |
| CN107303825A (en) | For the charging system of electric vehicle and for the method to electric vehicle charging | |
| CN105449734A (en) | Battery balancing device and charge and discharge balancing method thereof | |
| CN105846419A (en) | Photovoltaic and diesel complementary power supply system based on DC microgrid | |
| CN104333215A (en) | Method and device for suppressing frequent starting and stopping of inverter | |
| CN106786755A (en) | A kind of energy-storage system and control method | |
| CN210327132U (en) | Charging device and direct current light storage and charging integrated shed | |
| CN104638746A (en) | Two-way alternative charge-discharge solar photovoltaic controller | |
| CN106100095A (en) | Photovoltaic inversion energy storage system capable of avoiding frequent charge and discharge switching | |
| CN203456889U (en) | A school bus storage battery anti-feed system and the school bus using the same | |
| CN102904317A (en) | Bidirectional electric energy transfer circuit | |
| CN205992764U (en) | Charging device and portable charging case | |
| CN102510114A (en) | Four-end type capacitor node voltage balancing module | |
| CN116488304A (en) | Energy storage converter of energy storage system and electricity supplementing method | |
| CN103956821A (en) | Mixed distribution system and control method for energy storage modules for photovoltaic power generation | |
| CN109586370A (en) | High-integration charging energy storage system and power system | |
| CN104767248A (en) | Intelligent energy source efficient management system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20161109 |