CN103683463A - Hybrid inverter with uninterruptible power supply function - Google Patents
Hybrid inverter with uninterruptible power supply function Download PDFInfo
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- CN103683463A CN103683463A CN201310646486.1A CN201310646486A CN103683463A CN 103683463 A CN103683463 A CN 103683463A CN 201310646486 A CN201310646486 A CN 201310646486A CN 103683463 A CN103683463 A CN 103683463A
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Abstract
The invention provides a hybrid inverter with the uninterruptible power supply function. The hybrid inverter with the uninterruptible power supply function comprises a transducer, a bidirectional transducer, a bus, a bidirectional inverter, a controller, a first switch, a second switch and a third switch. One end of the first switch, one end of the second switch and one end of the third switch are connected, a first port is led out from the other end of the first switch, a second port is led out from the other end of the second switch, a third port is led out from the other end of the third switch, the first port is connected with alternating-current output of a hybrid inverter body, and the second port and the third port are used for being connected with a power grid and a load respectively; one end of the transducer is connected to a new energy power generation unit, the other end of the transducer is connected with the bus, one end of the bidirectional transducer is connected to an energy storage unit, the other end of the bidirectional transducer is connected to the bus, one end of the bidirectional inverter is connected with the bus, and the other end of the bidirectional inverter is connected with the first port. When one of the power grid and the inverter breaks down, only one switch is needed for operation and the responding speed is high.
Description
Technical field
The present invention relates to a kind of inverter, relate in particular to a kind of mixing inverter with uninterrupted power supply function.
Background technology
It is grid-connected that traditional combining inverter only can be realized photovoltaic power, when 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.Intermittence and randomness due to solar power generation, cause certain impact to electrical network.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 the mixing inverter with storage battery becomes solar inverter development trend.
When the generated output of photovoltaic module is greater than power limitation, by unnecessary power storage, at battery, when 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.
If photovoltaic subsidized price drops to, allow user feel grid-connected uneconomical even loss of capital, 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.
Summary of the invention
The present invention proposes to mix inverter structure, when realizing energy storage and grid-connected function, can provide independent power supply interface, realizes the uninterrupted power supply demand of important load.
The invention provides a kind of mixing inverter with uninterrupted power supply function, it comprises converter, reversible transducer, bus, two-way inverter, controller, first via switch, the second way switch and Third Road switch;
One end of first via switch, the second way switch and Third Road switch joins, the other end of first via switch, the second way switch and Third Road switch is drawn respectively a port, 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 receives the electric power of generation of electricity by new energy unit to input by control change device, controls charge and discharge and the protection of energy-storage units by controlling reversible transducer, by controlling output and the input of two-way inverter control alternating electromotive force, and maintains bus power-balance;
When controller judgement electrical network is normal, inverter is when normal, controller, by control signal, makes first via switch, the second way switch and Third Road switch all closed;
When controller judgement electric network fault, when inverter is normal, controller allows the second way switch disconnect rapidly by control signal, and first via switch and Third Road switch are closed simultaneously;
When controller judgement electrical network is normal, when inverter is abnormal, controller allows first via switch disconnect rapidly by control signal, and the second way switch and Third Road switch are closed simultaneously.
As a further improvement on the present invention, first via switch is to be formed by single or multiple switch series parallel combinations.
As a further improvement on the present invention, the second way switch is to be formed by single or multiple switch series parallel combinations.
As a further improvement on the present invention, Third Road switch is to be formed by single or multiple switch series parallel combinations.
As a further improvement on the present invention, first via switch, the second way switch and Third Road switch are mechanical switch or are controlled power electronic device.
As a further improvement on the present invention, 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 partly mixing inverter inside, part is being mixed inverter outside.
As a further improvement on the present invention, in the mixing inverter of family expenses, important load is connected on the 3rd port.
As a further improvement on the present invention, mix the bus of inverter as an independent part, be connected with converter, reversible transducer, two-way inverter.
As a further improvement on the present invention, 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.
As a further improvement on the present invention, also comprise four-way switch and generator, one end of four-way switch is connected with one end that first via switch, the second way switch and Third Road switch are connected, and the other end is connected with generator, and controller detects and control generator and four-way switch.
The invention has the beneficial effects as follows:
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.The present invention, during one of them fault of electrical network and inverter, only needs a switch motion, and the response time is faster.
Accompanying drawing explanation
Fig. 1 is a kind of application schematic diagram with the mixing inverter of uninterrupted power supply function of the present invention.
Fig. 2 is a kind of Another Application schematic diagram with the mixing inverter of uninterrupted power supply function of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the present invention will be further described.
Embodiment 1:
The present invention introduces energy-storage units, reversible transducer, two-way inverter and a switching network being comprised of K1, K2, K3 and corresponding controller in combining inverter, this controller can control switch K1, K2, the unit of K3 and mixing inverter, as shown in Figure 3.
Controller, by controlling each converter, is controlled the input of photovoltaic energy, the input of the charge and discharge of energy-storage units, power grid energy and output, maintains bus balance and is followed the tracks of bearing power variation.And detect the state of converter in figure, reversible transducer, two-way inverter, and the voltage and current of electrical network (between K switch and electrical network), judge that whether electrical network and inverter be normal.
When controller judgement electrical network is normal, inverter is when normal, controller is by control signal (as relay dry contact signal), make K1, K2, K3 all closed, mix like this inverter and electrical network by K1, K2 exchange electric energy, load by K3 by electrical network or inverter power supply;
When controller judgement electric network fault, when inverter is normal, controller allows K2 disconnect rapidly by control signal, by electrical network and inverter, load isolation, and K1, K3 closure simultaneously, load realizes uninterrupted power supply by K1, K3 inverter;
When controller judgement electrical network is normal, when inverter is abnormal, controller allows K1 disconnect rapidly by control signal, by inverter and electrical network, load isolation, and K2, K3 closure simultaneously, load realizes uninterrupted power supply by K2, K3;
If inverter and controller failure, what connect due to K2, K3 is normally-closed contact, and K1 is normally opened contact, and K2, K3 are automatically closed, and K1 disconnects automatically, isolated fault inverter, and load realizes uninterrupted power supply by K2, K3.
In scheme provided by the invention, during one of them fault of electrical network and inverter, only need a switch motion, the response time is faster.
Embodiment 2:
The present invention introduces energy-storage units, reversible transducer, two-way inverter and a switching network being comprised of K1, K2, K3 and K4 and corresponding controller in combining inverter, and generator.Controller can control switch K1, K2, the unit of K3, K4 and mixing inverter, and the start and stop of generator, as shown in Figure 2.
Controller, by controlling each converter, is controlled the input of photovoltaic energy, the input of the charge and discharge of energy-storage units, power grid energy and output, maintains bus balance and is followed the tracks of bearing power variation.And detect the state of converter in figure, reversible transducer, two-way inverter, and the voltage and current of electrical network (between K switch and electrical network), judge that whether electrical network and inverter be normal.
When controller judgement electrical network is normal, inverter is when normal, controller is by control signal (as relay dry contact signal), allow K1, K2, K3 closure, K4 disconnect, mix like this inverter and electrical network by K1, K2 exchange electric energy, load is passed through K2, K1 by electrical network or inverter power supply;
When controller judgement electric network fault, when inverter is normal, controller allows K2 disconnect rapidly (Millisecond) by control signal, by electrical network and inverter, load isolation, allow K1, K3 closure, K4 disconnect, load realizes uninterrupted power supply by K1, K3 by inverter simultaneously.If the long-time fault of electrical network, when battery capacity is not enough, controller starter-generator, and make K4 closed, when generating can power to the load, to battery charging, realize the long-time uninterrupted power supply of load.
When controller judgement electrical network is normal, when inverter is abnormal, controller allows K1 disconnect rapidly by control signal, by inverter and electrical network, load isolation, and closed, the K4 disconnection of K2, K3 simultaneously, load realizes uninterrupted power supply by K2, K3 by electrical network;
If inverter and controller failure, if K2, K3 connect is the normally-closed contact of relay, and K1, K4 are relay normally open contact, and K2, K3 are automatically closed, and K1, K4 disconnect automatically, isolated fault inverter, and load realizes uninterrupted power supply by K2, K3.
Because K1, K2, K3, K4 are the mechanical switchs such as electronic power switch or relay, be millisecond rank operate time, can meet the demand of load uninterrupted power supply.
Therefore,, as long as inverter and electrical network You Yi road power supply are normal, all can be load supplying, and do not need manual switchover.Even when controller lost efficacy (being fault of converter), also can realize the uninterrupted power supply of load.When the long-time fault of electrical network, when battery electric quantity is not enough, accessible generator, realizes the long-time power supply of load.
Above content is in conjunction with concrete preferred implementation further description made for the present invention, can not assert that specific embodiment of the invention is confined to these explanations.For general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, can also make some simple deduction or replace, all should be considered as belonging to protection scope of the present invention.
Claims (10)
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;
One end of first via switch, the second way switch and Third Road switch joins, the other end of first via switch, the second way switch and Third Road switch is drawn respectively a port, 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 receives the electric power of generation of electricity by new energy unit to input by control change device, controls charge and discharge and the protection of energy-storage units by controlling reversible transducer, by controlling output and the input of two-way inverter control alternating electromotive force, and maintains bus power-balance;
When controller judgement electrical network is normal, inverter is when normal, controller, by control signal, makes first via switch, the second way switch and Third Road switch all closed;
When controller judgement electric network fault, when inverter is normal, controller allows the second way switch disconnect rapidly by control signal, and first via switch and Third Road switch are closed simultaneously;
When controller judgement electrical network is normal, when inverter is abnormal, controller allows first via switch disconnect rapidly by control signal, and the second way switch and Third Road switch are closed simultaneously.
2. a kind of 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. a kind of 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. a kind of 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. a kind of 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. a kind of 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 inner at mixing inverter, part is outside at mixing inverter.
7. a kind of 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. a kind of 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. a kind of 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.
10. a kind of mixing inverter with uninterrupted power supply function according to claim 1, it is characterized in that: also comprise four-way switch and generator, one end of four-way switch is connected with one end that first via switch, the second way switch and Third Road switch are connected, the other end is connected with generator, and controller detects and control generator and four-way switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310646486.1A CN103683463A (en) | 2013-12-04 | 2013-12-04 | Hybrid inverter with uninterruptible power supply function |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310646486.1A CN103683463A (en) | 2013-12-04 | 2013-12-04 | Hybrid inverter with uninterruptible power supply function |
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| CN201310646486.1A Pending CN103683463A (en) | 2013-12-04 | 2013-12-04 | Hybrid inverter with uninterruptible power supply function |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016026285A1 (en) * | 2014-08-18 | 2016-02-25 | 深圳科士达科技股份有限公司 | Uninterruptible power supply |
| CN105656169A (en) * | 2014-11-28 | 2016-06-08 | 比亚迪股份有限公司 | Power supply system and control method of power supply system |
| CN105703402A (en) * | 2014-11-28 | 2016-06-22 | 比亚迪股份有限公司 | Micro-grid system and operation control method of micro-grid system |
| CN106998078A (en) * | 2017-04-05 | 2017-08-01 | 武汉大学 | A kind of family expenses photovoltaic power generation energy management system and method |
| CN107615615A (en) * | 2015-06-02 | 2018-01-19 | 东芝三菱电机产业系统株式会社 | Uninterrupted power supply(ups) |
| CN112332527A (en) * | 2020-11-06 | 2021-02-05 | 北京索英电气技术有限公司 | Mobile energy storage device, power distribution system and method |
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| CN103269117A (en) * | 2013-06-03 | 2013-08-28 | 河海大学常州校区 | System and method for multi-energy convergence coordinated control |
| CN103329393A (en) * | 2011-09-07 | 2013-09-25 | 三星Sdi株式会社 | Communication method, communication system, and energy storage system including the same |
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2013
- 2013-12-04 CN CN201310646486.1A patent/CN103683463A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103329393A (en) * | 2011-09-07 | 2013-09-25 | 三星Sdi株式会社 | Communication method, communication system, and energy storage system including the same |
| CN103269117A (en) * | 2013-06-03 | 2013-08-28 | 河海大学常州校区 | System and method for multi-energy convergence coordinated control |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016026285A1 (en) * | 2014-08-18 | 2016-02-25 | 深圳科士达科技股份有限公司 | Uninterruptible power supply |
| CN105656169A (en) * | 2014-11-28 | 2016-06-08 | 比亚迪股份有限公司 | Power supply system and control method of power supply system |
| CN105703402A (en) * | 2014-11-28 | 2016-06-22 | 比亚迪股份有限公司 | Micro-grid system and operation control method of micro-grid system |
| CN105703402B (en) * | 2014-11-28 | 2019-12-20 | 比亚迪股份有限公司 | Microgrid system and operation control method of microgrid system |
| CN107615615A (en) * | 2015-06-02 | 2018-01-19 | 东芝三菱电机产业系统株式会社 | Uninterrupted power supply(ups) |
| CN106998078A (en) * | 2017-04-05 | 2017-08-01 | 武汉大学 | A kind of family expenses photovoltaic power generation energy management system and method |
| CN106998078B (en) * | 2017-04-05 | 2019-06-25 | 武汉大学 | A kind of household photovoltaic power generation energy management system and method |
| CN112332527A (en) * | 2020-11-06 | 2021-02-05 | 北京索英电气技术有限公司 | Mobile energy storage device, power distribution system and method |
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Application publication date: 20140326 |
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