CN203799256U - Energy-storage grid-connected inverter - Google Patents
Energy-storage grid-connected inverter Download PDFInfo
- Publication number
- CN203799256U CN203799256U CN201420210007.1U CN201420210007U CN203799256U CN 203799256 U CN203799256 U CN 203799256U CN 201420210007 U CN201420210007 U CN 201420210007U CN 203799256 U CN203799256 U CN 203799256U
- Authority
- CN
- China
- Prior art keywords
- diode
- operational amplifier
- control unit
- resistance
- output terminal
- 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 - Lifetime
Links
- 238000004146 energy storage Methods 0.000 title claims abstract description 17
- 230000001105 regulatory effect Effects 0.000 claims description 9
- 238000007599 discharging Methods 0.000 claims description 6
- 239000003990 capacitor Substances 0.000 abstract description 4
- 238000005070 sampling Methods 0.000 abstract 2
- 230000005611 electricity Effects 0.000 description 5
- 238000001914 filtration Methods 0.000 description 3
- 230000003321 amplification Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000003116 impacting effect Effects 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000001681 protective effect 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
Landscapes
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Inverter Devices (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The utility model discloses an energy-storage grid-connected inverter, which comprises a sampling circuit. The sampling circuit comprises a voltage transformer (1), one wiring terminal at the output side of the voltage transformer (1) is grounded, the other wiring terminal passes through a first resistor (R1) and is connected with a base electrode of a switching triode (Q1), the emitter electrode of the switching triode (Q1) is connected with a positive power end of an operation amplifier (IC) via a second resistor (R2), the negative power end of the operation amplifier (IC) is grounded, a power supply (Vcc) is connected onto the collector electrode of the switching triode (Q1), the input end of the operation amplifier (IC) is connected with the output end of a current transformer (2), a first capacitor (C1) is also arranged between two wiring columns of the output end of the current transformer (2), a first diode (D1) and a second diode (D2) are parallelly connected on a filter capacitor (C); and the first diode (D1) and the second diode (D2) are parallelly connected and the directions are opposite.
Description
Technical field
The utility model relates to a kind of energy storage combining inverter, belongs to solar energy generation technology field.
Background technology
Even cancel grid-connected subsidy along with starting with the countries in Europe headed by Germany to cut down, energy storage combining inverter becomes the focus that the whole world is paid close attention to gradually.Energy storage inverter utilizes sun power to supply with household electricity daytime, and can, by unnecessary electrical power storage to accumulator, in the time of battery quota, can automatically input electrical network.In crest electricity price, evening or sunshine, family all can be used the electric energy storing in battery, and can flow at high price electrical network, earns more high yield when deficiency; In the time of trough electricity price, charge the battery by electrical network, save family's expenditure.But existing energy storage inverter is all realized mains supply, storage battery power supply and three kinds of load supplying patterns of photovoltaic power supply according to the switching at night on daytime.The complementary power supply of electrical network and photovoltaic if necessary, needs inverter can grasp the size cases of load and the phase place of electrical network changes, thereby realizes synchronous compensation.
Utility model content
The purpose of this utility model is, a kind of energy storage combining inverter is provided.It can make the phase place of inverter energy Real-time Collection electrical network and the size variation situation of load.
The technical solution of the utility model: energy storage combining inverter, be characterized in: comprise a sample circuit, described sample circuit comprises voltage transformer (VT), one of them terminals ground connection of the outgoing side of voltage transformer (VT), another terminals are connected with the base stage of switch triode by after the first resistance, the emitter of switch triode is connected with the positive power source terminal of operational amplifier by the second resistance, and the negative power end ground connection of operational amplifier, is connected with power supply on the collector of switch triode; The input end of described operational amplifier is connected with the output terminal of current transformer, between two binding posts of current transformer output terminal, be also provided with the first electric capacity, on the first electric capacity, be parallel with the first diode and the second diode, the parallel with one another and opposite direction of the first diode and the second diode; The positive pole of the input end of described operational amplifier is connected with the output terminal of operational amplifier by the 3rd resistance.
In above-mentioned energy storage combining inverter, on described the 3rd resistance, be parallel with a regulating circuit, regulating circuit comprises the second electric capacity and the regulating resistance that are cascaded.
In aforesaid energy storage combining inverter, comprise the MPPT unit that connects solar panel, MPPT unit is connected with inversion control unit, inversion control unit is also connected with Master Control Unit with inversion unit, and Master Control Unit is connected with accumulator by accumulator cell charging and discharging control module, accumulator cell charging and discharging unit successively; Described Master Control Unit is connected with utility grid output terminal by sample circuit.
Compared with prior art, the utility model according to civil power alternating current when the powering load, momentary current can periodically change, and electric current is very low near some phase place, easily there is the problem of larger error at the Data processing in later stage, utilize voltage transformer (VT) and switching tube that the phase place of civil power is converted into switching pulse amount, recycling switching tube carries out switch control to operational amplifier, make mains current signal that current transformer collects hour cannot carry out signal amplification at electric current, therefore the pulse voltage signal of the utility model operational amplifier output ground voltage signal to be a filtering easily the occur small-signal of error.
Brief description of the drawings
Fig. 1 is sample circuit structural representation of the present utility model;
Fig. 2 is structural representation of the present utility model.
Embodiment
Below in conjunction with drawings and Examples, the utility model is further described, but not as the foundation to the utility model restriction.
Embodiment.Energy storage combining inverter, as shown in Figure 1: comprise a sample circuit, described sample circuit comprises voltage transformer (VT) 1, one of them terminals ground connection of the outgoing side of voltage transformer (VT) 1, another terminals are connected with the base stage of switch triode Q1 by after the first resistance R 1, the emitter of switch triode Q1 is connected with the positive power source terminal of operational amplifier IC by the second resistance R 2, and the negative power end ground connection of operational amplifier IC, is connected with power Vcc on the collector of switch triode Q1; The input end of described operational amplifier IC is connected with the output terminal of current transformer 2, between two binding posts of current transformer 2 output terminals, be also provided with the first capacitor C 1, on the one earth capacitance C1 signal of filtering high frequency (can), be parallel with the first diode D1 and the second diode D2, parallel with one another and the opposite direction of the first diode D1 and the second diode D2, these two diodes play a protective role: one of them can prevent the voltage breakdown that another diode is reversed; The positive pole of the input end of described operational amplifier IC is connected with the output terminal of operational amplifier IC by the 3rd resistance R 3.In described the 3rd resistance R 3, be parallel with a regulating circuit, regulating circuit comprises the second capacitor C 2 and the regulating resistance r that are cascaded.Described energy storage combining inverter also comprises the MPPT unit 4 that connects solar panel 3, MPPT unit 4 is connected with inversion control unit 5, inversion control unit 5 is also connected with Master Control Unit 7 with inversion unit 6, and Master Control Unit 7 is connected with accumulator 10 by accumulator cell charging and discharging control module 8, accumulator cell charging and discharging unit 9 successively; Described Master Control Unit 7 is connected with utility grid output terminal by sample circuit.
According to civil power alternating current when the powering load, momentary current can periodically change, and electric current is very low near some phase place, easily there is the problem of larger error at the Data processing in later stage, the utility model has utilized voltage transformer (VT) and switching tube that the phase place of civil power is converted into switching pulse amount, recycling switching tube carries out switch control to operational amplifier, make mains current signal that current transformer collects hour cannot carry out signal amplification at electric current, therefore the pulse voltage signal of the utility model operational amplifier output ground voltage signal to be a filtering easily the occur small-signal of error.Subsequently, utilize pulse voltage signal, can obtain phase information and the load situation of civil power by simple data processing (completing) simultaneously in Master Control Unit.
Assemble the photovoltaic grid-connected inverting system of inverter of the present utility model, can realize following mode of operation: in the time that electric current flows into electrical network, preferential increasing reduced to the charging of energy-storage battery the electricity that flows into electrical network, if still have unnecessary electric weight, unnecessary electric weight is supplied to national grid generating, and can be synchronously grid-connected according to the phase place situation realization gathering, can not cause impacting with high pressure to electrical network like this; In the time that electric current flows into load by electrical network, reduce charging current or increase discharge current and carry out supply power supply, when supply, too according to the synchronous supply of phase place situation, can not cause impacting with high pressure to load like this, if still not enough, add the electricity of national grid to use to load.
Claims (3)
1. energy storage combining inverter, it is characterized in that: comprise a sample circuit, described sample circuit comprises voltage transformer (VT) (1), one of them terminals ground connection of the outgoing side of voltage transformer (VT) (1), another terminals are connected with the base stage of switch triode (Q1) by after the first resistance (R1), the emitter of switch triode (Q1) is connected with the positive power source terminal of operational amplifier (IC) by the second resistance (R2), the negative power end ground connection of operational amplifier (IC), on the collector of switch triode (Q1), be connected with power supply (Vcc), the input end of described operational amplifier (IC) is connected with the output terminal of current transformer (2), between two binding posts of current transformer (2) output terminal, be also provided with the first electric capacity (C1), on the first electric capacity (C1), be parallel with the first diode (D1) and the second diode (D2), the parallel with one another and opposite direction of the first diode (D1) and the second diode (D2), the positive pole of the input end of described operational amplifier (IC) is connected with the output terminal of operational amplifier (IC) by the 3rd resistance (R3).
2. energy storage combining inverter according to claim 1, it is characterized in that: on described the 3rd resistance (R3), be parallel with a regulating circuit, regulating circuit comprises the second electric capacity (C2) and the regulating resistance (r) that are cascaded.
3. energy storage combining inverter according to claim 2, it is characterized in that: comprise the MPPT unit (4) that connects solar panel (3), MPPT unit (4) is connected with inversion control unit (5), inversion control unit (5) is also connected with Master Control Unit (7) with inversion unit (6), and Master Control Unit (7) is connected with accumulator (10) by accumulator cell charging and discharging control module (8), accumulator cell charging and discharging unit (9) successively; Described Master Control Unit (7) is connected with utility grid output terminal by sample circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420210007.1U CN203799256U (en) | 2014-04-28 | 2014-04-28 | Energy-storage grid-connected inverter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420210007.1U CN203799256U (en) | 2014-04-28 | 2014-04-28 | Energy-storage grid-connected inverter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203799256U true CN203799256U (en) | 2014-08-27 |
Family
ID=51381457
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420210007.1U Expired - Lifetime CN203799256U (en) | 2014-04-28 | 2014-04-28 | Energy-storage grid-connected inverter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203799256U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110880776A (en) * | 2019-11-18 | 2020-03-13 | 国网浙江省电力有限公司 | Method and device for controlling charging and discharging of energy storage equipment in energy storage system |
-
2014
- 2014-04-28 CN CN201420210007.1U patent/CN203799256U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110880776A (en) * | 2019-11-18 | 2020-03-13 | 国网浙江省电力有限公司 | Method and device for controlling charging and discharging of energy storage equipment in energy storage system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203690977U (en) | Solar charging control system | |
| CN108899987B (en) | Solar charging control circuit with MPPT function | |
| CN201750187U (en) | Solar-energy charging device | |
| CN102646977B (en) | Secondary booster circuit for boosting voltage based on MPPT (maximum power point tracking) and distributed solar battery pack | |
| CN203799256U (en) | Energy-storage grid-connected inverter | |
| CN103259295A (en) | Portable electronic device with solar charging function | |
| CN204243827U (en) | A kind of BUCK type supply convertor being applicable to generation of electricity by new energy | |
| CN201383688Y (en) | Impulse type charger of wind power variable pitch system | |
| CN203826988U (en) | Photovoltaic inverter for power storage-type photovoltaic grid-connected system | |
| CN201499006U (en) | Power supply for on-line monitoring system of transmission line | |
| CN204179943U (en) | A kind of photovoltaic generating system bidirectional DC-DC converter based on DSP | |
| CN204304538U (en) | A kind of solar electric vehicle charging device being installed at carport | |
| CN203119566U (en) | Solar charger for converting polycrystalline silicon and amorphous silicon solar cell panels with each other | |
| CN203774827U (en) | Portable solar cell phone charger | |
| CN206370722U (en) | Light energy collecting circuit | |
| CN103941699B (en) | Inverter for accumulation energy type photovoltaic parallel in system | |
| CN201479049U (en) | Multifunctional solar energy small power station | |
| CN201623513U (en) | Electrical energy distributor circuit and mobile terminal | |
| CN204947684U (en) | A kind of MPPT boosting solar electric vehicle charge controller | |
| CN205081998U (en) | Integrative solar street lamp controller of step -down constant current control | |
| CN204947658U (en) | Unmanned plane quick charge device | |
| CN203747449U (en) | Bus solar mobile phone charging device | |
| CN203967796U (en) | A kind of ocean type solar charging/discharging controller | |
| CN203690976U (en) | Environmental friendly water level monitor | |
| CN204145056U (en) | A kind of household system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Tonglu County, Hangzhou Economic Development Zone, Zhejiang province 311500 City Chu Road No. 288 Patentee after: ZHEJIANG SOLAX NETWORK ENERGY TECHNOLOGY CO.,LTD. Address before: Tonglu County, Hangzhou Economic Development Zone, Zhejiang province 311500 City Chu Road No. 288 Patentee before: SOLAX POWER Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 311500 No. 288 Shizhu Road, Tonglu County Economic Development Zone, Hangzhou City, Zhejiang Province Patentee after: Zhejiang arrow network energy technology Co.,Ltd. Address before: 311500 No. 288 Shizhu Road, Tonglu County Economic Development Zone, Hangzhou City, Zhejiang Province Patentee before: ZHEJIANG SOLAX NETWORK ENERGY TECHNOLOGY Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140827 |