CN203660641U - Hybrid inverter with uninterrupted power supply function - Google Patents
Hybrid inverter with uninterrupted power supply function Download PDFInfo
- Publication number
- CN203660641U CN203660641U CN201320797696.6U CN201320797696U CN203660641U CN 203660641 U CN203660641 U CN 203660641U CN 201320797696 U CN201320797696 U CN 201320797696U CN 203660641 U CN203660641 U CN 203660641U
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- Prior art keywords
- inverter
- switch
- port
- power supply
- bus
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- Expired - Lifetime
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- 238000004146 energy storage Methods 0.000 claims abstract description 7
- 230000002441 reversible effect Effects 0.000 claims description 17
- 230000005611 electricity Effects 0.000 claims description 4
- 230000002457 bidirectional effect Effects 0.000 abstract 4
- 239000000203 mixture Substances 0.000 description 9
- 238000010248 power generation Methods 0.000 description 4
- 238000002955 isolation Methods 0.000 description 3
- 238000005286 illumination Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/70—Hybrid systems, e.g. uninterruptible or back-up power supplies integrating renewable energies
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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
Abstract
The utility model provides a hybrid inverter with an uninterrupted power supply function. The hybrid inverter comprises a converter, a bidirectional converter, a bidirectional inverter, a bus, a controller, a first path switch, a second path switch and a third path switch. The first path switch, the second path switch and the third path switch are connected in an end-to-end mode; ports are led out from between every two switches, and the parts are respectively a first port, a second port and a third port; the first port is connected with the AC output of the main body of the hybrid inverter; the second port and the third port are respectively used for connection with a power network and a load; one end of the converter is connected with a new energy generating unit such as a photovoltaic generating unit and the like, and the other end is connected with the bus; one end of the bidirectional converter is connected with an energy storage unit, and the other end is connected with the bus; and one end of the bidirectional inverter is connected with the bus, and the other end is connected with the first port. When a fault occurs in the power network or the hybrid inverter, important loads can still supply power, thus uninterrupted power supply is realized.
Description
Technical field
The utility model relates to a kind of inverter, relates in particular to the mixing inverter with uninterrupted power supply function.
Background technology
It is grid-connected that traditional combining inverter only can be realized photovoltaic power, in the time that electric network fault disconnects, can only shut down, and cannot, from net power supply, more cannot realize the demand of UPS (the Uninterrupted Power Supply) uninterrupted power supply of important load.
At present, solar power generation has been obtained large-scale application, and the proportion of solar power generation in electrical network also improves day by day.Due to intermittence and the randomness of solar power generation, electrical network is caused to certain impact.The Europe of greatly developing at solar energy, has started to limit solar grid-connected maximum power, and along with the reduction of cost for solar power generation, photovoltaic subsidized price also declines year by year.
Therefore become solar inverter development trend with the mixing inverter of storage battery.
In the time that the generated output of photovoltaic module is greater than power limitation, by unnecessary power storage, at battery, in the time that photovoltaic module power declines, battery is connected to the grid the energy of storage again, brings into play to greatest extent the generating capacity of photovoltaic module.
Allow user feel grid-connected uneconomical even loss of capital if photovoltaic subsidized price drops to, the electric energy that photovoltaic module can be sent is except for load, and all the other electric energy are all stored in battery, treat night and overcast and rainy use.
Utility model content
The utility model proposes mixing inverter structure, in realizing energy storage and grid-connected function, can provide independent power supply interface, realize the uninterrupted power supply demand of important load.
The utility model provides a kind of mixing inverter with uninterrupted power supply function, and it comprises converter, reversible transducer, bus, two-way inverter, controller, first via switch, the second way switch and Third Road switch;
First via switch, the second way switch and Third Road switch are end to end, a port is drawn in the centre of every two switches, be respectively the first port, the second port, the 3rd port, the first port is connected with the interchange output that mixes inverter main body, and the second port, the 3rd port are respectively used to be connected with electrical network, load;
Access generation of electricity by new energy unit, converter one end, the other end is connected with bus, reversible transducer one end access energy-storage units, the other end is connected with bus, two-way inverter one end connection bus, the other end is connected with the first port;
Controller detects and control change device, reversible transducer, two-way inverter, bus, first via switch, the second way switch and Third Road switch;
Controller is received the electric power input of generation of electricity by new energy unit by control change device, by controlling charge and discharge and the protection of reversible transducer control energy-storage units, by controlling output and the input of two-way inverter control alternating electromotive force, and maintain bus power-balance.
As further improvement of the utility model, first via switch is to be formed by single or multiple switch series parallel combinations.
As further improvement of the utility model, the second way switch is to be formed by single or multiple switch series parallel combinations.
As further improvement of the utility model, Third Road switch is to be formed by single or multiple switch series parallel combinations.
As further improvement of the utility model, first via switch, the second way switch and Third Road switch are mechanical switch or are controlled power electronic device.
As further improvement of the utility model, first via switch, the second way switch and Third Road switch are all built in and mix inverter inside, or it is outside independent complete to be placed on mixing inverter, or part is in mixing inverter inside, is partly mixing inverter outside.
As further improvement of the utility model, in the mixing inverter of family expenses, important load is connected on the 3rd port.
As further improvement of the utility model, mix the bus of inverter as an independent part, be connected with converter, reversible transducer, two-way inverter.
As further improvement of the utility model, bus is distributed to one or more in converter, reversible transducer, two-way inverter, and the port that converter, reversible transducer, two-way inverter are originally connected with bus is directly connected.Bus also can independently exist.
The beneficial effects of the utility model are:
When electrical network or while mixing in inverter a fault, important load still can be powered, and realizes uninterrupted power supply.
In the mixing inverter of family expenses, some important loads can be allowed, as illumination, computer etc. are connected on N3 mouth, when electric network fault or fault of converter, uninterrupted power supply can be realized.
Brief description of the drawings
Fig. 1 is the application schematic diagram that the utlity model has the mixing inverter of uninterrupted power supply function.K is the isolation panel switches between civil power and inverter.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described further.
The switching network that the mixing inverter the utility model proposes comprises converter, reversible transducer, two-way inverter, bus, controller and is made up of K1, K2, K3, controller can control switch K1, K2, the unit of K3 and mixing inverter, as shown in Figure 1.
When mixing inverter is normally worked, controller is received the new forms of energy electric power inputs such as photovoltaic to greatest extent by control change device; Controller computational load power, new forms of energy input power, battery electric quantity and according to user's setup parameter, by controlling the charge and discharge of reversible transducer control energy-storage units; Controller detects busbar voltage, bearing power, line voltage and electric current, by controlling output and the input of two-way inverter control alternating electromotive force, and maintain bus power-balance and follow the tracks of bearing power, and in the time of electric network fault, switch the control mode of inverter, stablize output AC voltage and frequency.
The uninterrupted power supply mode of important load realizes in the following manner.
Controller, by mixing inverter main body unit in detection figure, as the state of converter, reversible transducer, two-way inverter, judges that whether mixing inverter main body is normal.Controller, by detecting the voltage and current (between K switch and electrical network) of electrical network in figure, judges that whether electrical network is normal.
When controller judges that electrical network is normal, mixes inverter main body when normal, controller is by control signal (as relay dry contact signal), allow K1 closure, a closure or all closed in K2/K3, mix like this inverter main body and electrical network and exchange electric energy by K1, load by K2 or K3 by electrical network or inverter power supply;
When controller judges electric network fault, mix inverter main body when normal, controller allows K1 and K3 disconnect rapidly (Millisecond) by control signal, by electrical network and inverter, load isolation, allow K2 closure, load realizes uninterrupted power supply by K2 by mixing inverter main body simultaneously;
When controller judges that electrical network is normal, when mixing inverter main body is abnormal, controller allows K1 and K2 disconnect rapidly by control signal, will mix inverter main body and electrical network, load isolation, K3 closure simultaneously, and load realizes uninterrupted power supply by K3;
If mix inverter main body and controller failure, because K3 connects is the normally-closed contact of relay, and K1, K2 are relay normally open contact, and K3 is automatically closed, and K1/K2 disconnects automatically, isolated fault mixing inverter main body, and load realizes uninterrupted power supply by K3.
Because K1, K2, K3 are the mechanical switch such as electronic power switch or relay, operate time is short, can meet the demand of load uninterrupted power supply.
Therefore,, as long as mixing inverter main body and electrical network You Yi road power supply are normal, all can be load supplying, and do not need manual switchover.Even in the time that controller lost efficacy (being fault of converter), also can realize the uninterrupted power supply of load.
1, this switching network contains at least three output interface N1, N2 and N3, and port N1, N2 and N3 exchange respectively output, electrical network, load and be connected with inverter;
2, three branch road K1 of composition switching network, K2 and K3 are formed by single or multiple switch series parallel combinations, and are not limited to the single switch in figure;
3, the switch in switching network, is not limited to the mechanical switchs such as relay, contactor, circuit breaker, also comprises controlled power electronic device;
4, K switch 1 of the present utility model, K2, K3 can all be built in and mix inverter inside, also can be placed on mixing inverter outside independent complete, also can part mix inverter inside, are partly mixing inverter outside;
5, switching network of the present utility model is not limited to mix inverter.
When electrical network or while mixing in inverter a fault, important load still can be powered, and realizes uninterrupted power supply.
In the mixing inverter of family expenses, some important loads can be allowed, as illumination, computer etc. are connected on N3 mouth, when electric network fault or fault of converter, uninterrupted power supply can be realized.
Above content is in conjunction with concrete preferred implementation further detailed description of the utility model, can not assert that concrete enforcement of the present utility model is confined to these explanations.For the utility model person of an ordinary skill in the technical field, without departing from the concept of the premise utility, can also make some simple deduction or replace, all should be considered as belonging to protection range of the present utility model.
Claims (9)
1. a mixing inverter with uninterrupted power supply function, is characterized in that: it comprises converter, reversible transducer, bus, two-way inverter, controller, first via switch, the second way switch and Third Road switch;
First via switch, the second way switch and Third Road switch are end to end, a port is drawn in the centre of every two switches, be respectively the first port, the second port, the 3rd port, the first port is connected with the interchange output that mixes inverter main body, and the second port, the 3rd port are respectively used to be connected with electrical network, load;
Access generation of electricity by new energy unit, converter one end, the other end is connected with bus, reversible transducer one end access energy-storage units, the other end is connected with bus, two-way inverter one end connection bus, the other end is connected with the first port;
Controller detects and control change device, reversible transducer, two-way inverter, bus, first via switch, the second way switch and Third Road switch;
Controller is received the electric power input of generation of electricity by new energy unit by control change device, by controlling charge and discharge and the protection of reversible transducer control energy-storage units, by controlling output and the input of two-way inverter control alternating electromotive force, and maintain bus power-balance.
2. the mixing inverter with uninterrupted power supply function according to claim 1, is characterized in that: first via switch is to be formed by single or multiple switch series parallel combinations.
3. the mixing inverter with uninterrupted power supply function according to claim 1, is characterized in that: the second way switch is to be formed by single or multiple switch series parallel combinations.
4. the mixing inverter with uninterrupted power supply function according to claim 1, is characterized in that: Third Road switch is to be formed by single or multiple switch series parallel combinations.
5. the mixing inverter with uninterrupted power supply function according to claim 1, is characterized in that: first via switch, the second way switch and Third Road switch are mechanical switch or are controlled power electronic device.
6. the mixing inverter with uninterrupted power supply function according to claim 1, it is characterized in that: first via switch, the second way switch and Third Road switch are all built in and mix inverter inside, or it is outside independent complete to be placed on mixing inverter, or part is in mixing inverter inside, is partly mixing inverter outside.
7. the mixing inverter with uninterrupted power supply function according to claim 1, is characterized in that: in the mixing inverter of family expenses, important load is connected on the 3rd port.
8. the mixing inverter with uninterrupted power supply function according to claim 1, is characterized in that: mix the bus of inverter as an independent part, be connected with converter, reversible transducer, two-way inverter.
9. the mixing inverter with uninterrupted power supply function according to claim 1, it is characterized in that: bus is distributed to one or more in converter, reversible transducer, two-way inverter, the port that converter, reversible transducer, two-way inverter are originally connected with bus is directly connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320797696.6U CN203660641U (en) | 2013-12-04 | 2013-12-04 | Hybrid inverter with uninterrupted power supply function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320797696.6U CN203660641U (en) | 2013-12-04 | 2013-12-04 | Hybrid inverter with uninterrupted power supply function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203660641U true CN203660641U (en) | 2014-06-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320797696.6U Expired - Lifetime CN203660641U (en) | 2013-12-04 | 2013-12-04 | Hybrid inverter with uninterrupted power supply function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203660641U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103683472A (en) * | 2013-12-04 | 2014-03-26 | 深圳科士达新能源有限公司 | Hybrid inverter with uninterruptible power supply function |
| CN110994783A (en) * | 2020-01-02 | 2020-04-10 | 科华恒盛股份有限公司 | Uninterruptible power supply and control method thereof |
| CN111106668A (en) * | 2020-01-02 | 2020-05-05 | 科华恒盛股份有限公司 | Power supply control method and power supply control device |
-
2013
- 2013-12-04 CN CN201320797696.6U patent/CN203660641U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103683472A (en) * | 2013-12-04 | 2014-03-26 | 深圳科士达新能源有限公司 | Hybrid inverter with uninterruptible power supply function |
| CN110994783A (en) * | 2020-01-02 | 2020-04-10 | 科华恒盛股份有限公司 | Uninterruptible power supply and control method thereof |
| CN111106668A (en) * | 2020-01-02 | 2020-05-05 | 科华恒盛股份有限公司 | Power supply control method and power supply control device |
| CN111106668B (en) * | 2020-01-02 | 2022-01-14 | 科华恒盛股份有限公司 | Power supply control method and power supply control device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140618 |