CN203951383U - A kind of auxiliary power supply of photovoltaic inverter is optimized structure - Google Patents
A kind of auxiliary power supply of photovoltaic inverter is optimized structure Download PDFInfo
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- CN203951383U CN203951383U CN201420313101.XU CN201420313101U CN203951383U CN 203951383 U CN203951383 U CN 203951383U CN 201420313101 U CN201420313101 U CN 201420313101U CN 203951383 U CN203951383 U CN 203951383U
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- power supply
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- branch road
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- 210000003850 cellular structure Anatomy 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
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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
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Abstract
A kind of auxiliary power supply of photovoltaic inverter is optimized structure, and on the Alternating Current Power Supply branch road being connected, connects rectification circuit with electrical network, be parallel with electric capacity, and capacitances in series has the simple of transformer and the first switching tube on rectification circuit; On the direct current supply branch road being connected with battery component, be in series with counnter attack diode and be parallel with electric capacity, and capacitances in series there are the simple of transformer and second switch pipe; Also comprise a control circuit, its input is connected with Circuit Fault on Secondary Transformer output, and output is connected with the grid of two switching tubes respectively, and control circuit is by detecting the voltage signal of Circuit Fault on Secondary Transformer, two switching tubes are sent to corresponding drive control signal, control its turn-on and turn-off; Two cover electric power systems of the prior art are merged into a set of electric power system by the utility model, thereby effectively simplified circuit structure, saved resource, reduced product cost.
Description
Technical field
The utility model relates to photovoltaic DC-to-AC converter power supply technique field, is specifically related to a kind of auxiliary power supply of photovoltaic inverter and optimizes structure.
Background technology
In photovoltaic DC-to-AC converter, the power supply of each control unit module is a very important problem in inverter, generally, system can make full use of internal resource, conventionally by day, system can be from input source-photovoltaic cell component power taking of inverter, then by a set of DC/DC accessory power supply to the each control unit module for power supply in system.But to evening, battery component does not have direct current output, so just cannot be again from battery component power taking, existing way is from AC network side-draw electricity, make again the accessory power supply of a set of independently AC/DC, the output in the auxiliary source of DC and the auxiliary source of AC is given required each control unit module for power supply through mutual top circuit, in such photovoltaic DC-to-AC converter, will have two cover electric power systems, has increased cost and the circuit of whole system.
Summary of the invention
For solving above-mentioned problems of the prior art, the purpose of this utility model is to provide a kind of auxiliary power supply of photovoltaic inverter to optimize structure, two cover electric power systems of the prior art are merged into a set of electric power system, thereby effectively simplify circuit structure, save resource, reduced product cost.
In order to achieve the above object, the technical scheme that the utility model adopts is:
A kind of auxiliary power supply of photovoltaic inverter is optimized structure, and on the Alternating Current Power Supply branch road being connected, connects rectification circuit with electrical network, be parallel with electric capacity, and capacitances in series has the simple of transformer and the first switching tube on rectification circuit; On the direct current supply branch road being connected with battery component, be in series with counnter attack diode and be parallel with electric capacity, and capacitances in series there are the simple of transformer and second switch pipe; Also comprise a control circuit, the input of described control circuit is connected with the output of Circuit Fault on Secondary Transformer, output is connected with the grid of the first switching tube of Alternating Current Power Supply branch road and the second switch pipe of direct current supply branch road respectively, control circuit is by detecting the voltage signal of Circuit Fault on Secondary Transformer, the first switching tube and second switch pipe are sent to corresponding drive control signal, control its turn-on and turn-off, the first switching tube described above, second switch pipe, transformer and control circuit form accessory power supply.
The output of described Circuit Fault on Secondary Transformer is given each control unit module for power supply.
Compared to the prior art, the utility model possesses following advantage:
Existing scheme needs the independent auxiliary source circuit of two covers, has the high shortcoming of the many costs of design element.In prior art, the auxiliary source of DC and the auxiliary source of AC work alone respectively, and high that of the output voltage in two auxiliary sources output voltage after the circuit of mutual top will be powered to control unit.And present patent application technical scheme be by of the prior art two independently auxiliary source merge into an auxiliary source, two switching tubes in two branch roads are controlled by a control unit unification, two branch roads push up mutually by same transformer induction voltage simultaneously, it is high that whose voltage AC and DC input, will from whose winding extracting energy, control unit power supply in the system of giving, compared with prior art, the art of this patent has been simplified the circuit structure of prior art on the basis that does not change function, reduce components and parts, reduced product cost.
Brief description of the drawings
Fig. 1 is prior art circuits control chart.
Fig. 2 is the utility model circuit controling drawing of optimizing structure.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
As shown in Figure 2, a kind of auxiliary power supply of photovoltaic inverter of the utility model block diagram of optimizing structure, in photovoltaic DC-to-AC converter, the power supply of each control unit module is made up of direct current supply branch road, Alternating Current Power Supply branch road and accessory power supply three parts, described Alternating Current Power Supply branch road is from grid side power taking, alternating current carries out the conversion of AC/DC by rectification circuit to it, then simple and first switching tube of rear class series transformer; Described direct current supply branch road is from battery component power taking, and the counnter attack diode of then connecting prevents that the current flowing backwards in circuit from entering battery component, and then shunt capacitance carries out filtering to its power supply, then simple the and second switch pipe of rear class series transformer; The first switching tube in described two branch roads and the control signal of second switch pipe are controlled by control circuit is unified, the input of described control circuit is connected with Circuit Fault on Secondary Transformer, the output of control circuit is connected with the grid of second switch pipe with the first switching tube in two branch roads respectively, control circuit is by detecting the voltage signal of Circuit Fault on Secondary Transformer, the first switching tube and second switch pipe are sent to corresponding drive control signal, control the first switching tube and second switch pipe turn-on and turn-off.
Claims (1)
1. an auxiliary power supply of photovoltaic inverter is optimized structure, and it is characterized in that: on the Alternating Current Power Supply branch road being connected with electrical network, connect rectification circuit, be parallel with electric capacity on rectification circuit, and capacitances in series has the simple of transformer and the first switching tube; On the direct current supply branch road being connected with battery component, be in series with counnter attack diode and be parallel with electric capacity, and capacitances in series there are the simple of transformer and second switch pipe; Also comprise a control circuit, the input of described control circuit is connected with the output of Circuit Fault on Secondary Transformer, output is connected with the grid of the first switching tube of Alternating Current Power Supply branch road and the second switch pipe of direct current supply branch road respectively, control circuit is by detecting the voltage signal of Circuit Fault on Secondary Transformer, the first switching tube and second switch pipe are sent to corresponding drive control signal, control its turn-on and turn-off, the first switching tube described above, second switch pipe, transformer and control circuit form accessory power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420313101.XU CN203951383U (en) | 2014-06-12 | 2014-06-12 | A kind of auxiliary power supply of photovoltaic inverter is optimized structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420313101.XU CN203951383U (en) | 2014-06-12 | 2014-06-12 | A kind of auxiliary power supply of photovoltaic inverter is optimized structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203951383U true CN203951383U (en) | 2014-11-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420313101.XU Expired - Fee Related CN203951383U (en) | 2014-06-12 | 2014-06-12 | A kind of auxiliary power supply of photovoltaic inverter is optimized structure |
Country Status (1)
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| CN (1) | CN203951383U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106505541A (en) * | 2016-12-30 | 2017-03-15 | 成都锐能科技有限公司 | A kind of surge restraint circuit |
| CN108336912A (en) * | 2017-01-20 | 2018-07-27 | 深圳耐斯特思新能源科技有限公司 | One kind is about photovoltaic energy storage inverter SPS alternating current-direct currents electricity getting device and method |
| CN108899989A (en) * | 2018-07-27 | 2018-11-27 | 苏州伟创电气设备技术有限公司 | A kind of alternating current-direct current automatic switchover power supply system |
| CN109004675A (en) * | 2018-08-27 | 2018-12-14 | 湖北工业大学 | A kind of wide input accessory power supply of adaptive switching winding |
| US11594952B2 (en) | 2020-10-23 | 2023-02-28 | Delta Electronics (Shanghai) Co., Ltd. | Auxiliary power supply device for inverter, inverter, and method for starting the same |
| CN117792064A (en) * | 2024-02-28 | 2024-03-29 | 美世乐(广东)新能源科技有限公司 | Auxiliary power supply system of photovoltaic inverter |
-
2014
- 2014-06-12 CN CN201420313101.XU patent/CN203951383U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106505541A (en) * | 2016-12-30 | 2017-03-15 | 成都锐能科技有限公司 | A kind of surge restraint circuit |
| CN106505541B (en) * | 2016-12-30 | 2019-09-27 | 成都锐能科技有限公司 | A kind of surge restraint circuit |
| CN108336912A (en) * | 2017-01-20 | 2018-07-27 | 深圳耐斯特思新能源科技有限公司 | One kind is about photovoltaic energy storage inverter SPS alternating current-direct currents electricity getting device and method |
| CN108899989A (en) * | 2018-07-27 | 2018-11-27 | 苏州伟创电气设备技术有限公司 | A kind of alternating current-direct current automatic switchover power supply system |
| CN108899989B (en) * | 2018-07-27 | 2024-06-04 | 苏州伟创电气科技股份有限公司 | AC/DC automatic switching power supply system |
| CN109004675A (en) * | 2018-08-27 | 2018-12-14 | 湖北工业大学 | A kind of wide input accessory power supply of adaptive switching winding |
| CN109004675B (en) * | 2018-08-27 | 2021-12-03 | 湖北工业大学 | Wide input auxiliary power supply of self-adaptation switching winding |
| US11594952B2 (en) | 2020-10-23 | 2023-02-28 | Delta Electronics (Shanghai) Co., Ltd. | Auxiliary power supply device for inverter, inverter, and method for starting the same |
| CN117792064A (en) * | 2024-02-28 | 2024-03-29 | 美世乐(广东)新能源科技有限公司 | Auxiliary power supply system of photovoltaic inverter |
| CN117792064B (en) * | 2024-02-28 | 2024-05-07 | 美世乐(广东)新能源科技有限公司 | Auxiliary power supply system of photovoltaic inverter |
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Legal Events
| 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: 20141119 |