CN104467459A - Photovoltaic inverter integrating direct current distribution - Google Patents
Photovoltaic inverter integrating direct current distribution Download PDFInfo
- Publication number
- CN104467459A CN104467459A CN201410785984.9A CN201410785984A CN104467459A CN 104467459 A CN104467459 A CN 104467459A CN 201410785984 A CN201410785984 A CN 201410785984A CN 104467459 A CN104467459 A CN 104467459A
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- China
- Prior art keywords
- cabinet
- alternating current
- filter
- reactance
- circuit breaker
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/003—Constructional details, e.g. physical layout, assembly, wiring or busbar connections
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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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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Inverter Devices (AREA)
Abstract
The invention relates to a photovoltaic inverter integrating direct current distribution. The photovoltaic inverter comprises a power cabinet (1), a reactance cabinet (2) and an alternating current cabinet (3), the power cabinet (1), the reactance cabinet (2) and the alternating current cabinet (3) are sequentially arranged from left to right, an IGBT module (4), a direct current filter (5) and a direct current circuit breaker (6) are sequentially arranged in the power cabinet (1) from top to bottom, a mainframe box (7), a power panel (8) and an electric reactor (8) are sequentially arranged in the reactance cabinet (2) from top to bottom, an alternating current contactor (9) and an alternating current circuit breaker (10) are sequentially arranged in the alternating current cabinet (3) from top to bottom, and an alternating current filter (12) is arranged on a separation plate of the reactance cabinet (2) and the alternating current cabinet (3). According to the photovoltaic inverter integrating direct current distribution, the cost of one direct current distribution cabinet is omitted, the maximum heat source electric reactor and the IGBT module are separated, the heat radiation condition in the cabinets is greatly improved, and device running efficiency is improved.
Description
Technical field
The present invention relates to a kind of photovoltaic DC-to-AC converter of integrated DC distribution, belong to electric and electronic technical field.
Background technology
Along with the pressure of energy crisis and environmental protection sharply increases, solar energy is greatly developed as a kind of new forms of energy with wide, the pollution-free feature that distributes.Photovoltaic DC-to-AC converter is as one of the core component of parallel network power generation, and abroad, market scale all keeps quick growth.
The rapid rising of the increasingly mature and parallel network power generation popularization degree of photovoltaic inversion technology, has higher requirement to the standardization of photovoltaic DC-to-AC converter, stability, fail safe.Use for reference the successful experience of Germany, Australia's formulation photovoltaic standard, the units such as Beijing Jian Heng authentication center, Chinese Academy of Sciences electrician institute, national Solar Photovoltaic Energy System Standards technical committees in 2009 and department have write photovoltaic DC-to-AC converter authentication techniques specification jointly.This specification comprises the requirement of performance index, electromagnetic compatibility, defencive function, dielectric voltage withstand, shell protection grade aspect, and requires big-and-middle-sized power station must possess certain low voltage ride-through capability and photovoltaic parallel in system should possess certain anti-islanding ability.
Market determines the demand of inverter, policy guide inverter developing direction.While photovoltaic inversion product price continuous slide, within 2013, domestic adding new capacity reaches 11.3GW.For user, the performance of inverter determines received electricity and the quality of power supply; For enterprise, the rationalization of inverter structure, will improve enterprise's competitiveness commercially.At present, photovoltaic DC-to-AC converter great majority on the market are all furnished with independent photovoltaic DC power distribution cabinet, not only cause waste spatially, also virtually improve cost.
Summary of the invention
The object of the invention is to overcome above-mentioned deficiency, there is provided a kind of photovoltaic DC-to-AC converter of integrated DC distribution, it not only reduces the cost of a DC power distribution cabinet, maximum thermal source reactor and IGBT module is separated again, significantly improve the heat dissipating state in cabinet, improve device operation efficiency.
The object of the present invention is achieved like this: a kind of photovoltaic DC-to-AC converter of integrated DC distribution, it comprise arrange successively from left to right power cabinet, reactance cabinet with exchange cabinet, IGBT module, DC filter and DC circuit breaker is disposed with from top to bottom in described power cabinet, mainframe box, power panel and reactor is disposed with from top to bottom in described reactance cabinet, described interchange cabinet is disposed with A.C. contactor and AC circuit breaker from top to bottom, described reactance cabinet is provided with alternating current filter with on the dividing plate exchanging cabinet, and described alternating current filter is positioned at reactance cabinet.
The direct current that solar panel produces enters IGBT module and is reverse into alternating current after DC circuit breaker and DC filter, and the alternating current produced after inversion externally exports after current rectifying and wave filtering circuit, alternating current filter, A.C. contactor and AC circuit breaker.
Described current rectifying and wave filtering circuit includes three groups of reactors, and is often connected with filter capacitor between group reactor, and above-mentioned reactor and electric capacity form LC filter circuit.
Compared with prior art, the present invention has following beneficial effect:
The photovoltaic DC-to-AC converter of a kind of integrated DC distribution of the present invention, direct-flow distribution system is integrated with in its power cabinet, the reactor be originally positioned over below IGBT module is become cabinet separately, and the widest direction of reactor is consistent with cabinet depth direction, not only reduce the cost of a DC power distribution cabinet thus, again maximum thermal source reactor and IGBT module are separated, significantly improve the heat dissipating state of power cabinet; As for reactance cabinet, place the less power panel of temperature influence and mainframe box above reactor, and alternating current filter be installed on reactance cabinet and exchange on the cabinet space bar between cabinet, neither wasting space, also reduces the requirement to cabinet top fan power.
Accompanying drawing explanation
Fig. 1 is the structural representation of the photovoltaic DC-to-AC converter of a kind of integrated DC distribution of the present invention.
Fig. 2 is the dorsal view of Fig. 1.
Fig. 3 is the electronic schematic diagram of the photovoltaic DC-to-AC converter of a kind of integrated DC distribution of the present invention.
Wherein:
Power cabinet 1
Reactance cabinet 2
Exchange cabinet 3
IGBT module 4
DC filter 5
DC circuit breaker 6
Mainframe box 7
Power panel 8
A.C. contactor 9
AC circuit breaker 10
Reactor 11
Alternating current filter 12.
Embodiment
See Fig. 1 ~ Fig. 3, the photovoltaic DC-to-AC converter of a kind of integrated DC distribution of the present invention, it comprises the power cabinet 1 arranged successively from left to right, reactance cabinet 2 with exchange cabinet 3, IGBT module 4 is disposed with from top to bottom in described power cabinet 1, DC filter 5 and DC circuit breaker 6, mainframe box 7 is disposed with from top to bottom in described reactance cabinet 2, power panel 8 and reactor 11, described interchange cabinet 3 is disposed with A.C. contactor 9 and AC circuit breaker 10 from top to bottom, described reactance cabinet 2 with the dividing plate exchanging cabinet 3 is provided with alternating current filter 12, described alternating current filter 12 is positioned at reactance cabinet 2.
During work, the direct current that solar panel produces enters IGBT module 4 and is reverse into alternating current after DC circuit breaker 6 and DC filter 5, and the alternating current produced after inversion externally exports after current rectifying and wave filtering circuit, alternating current filter 12, A.C. contactor 9 and AC circuit breaker 10; Meanwhile, above-mentioned current rectifying and wave filtering circuit includes three groups of reactors 11, and is often connected with filter capacitor between group reactor 11, and above-mentioned reactor 11 and electric capacity form LC filter circuit.
Claims (3)
1. the photovoltaic DC-to-AC converter of an integrated DC distribution, it is characterized in that: it comprises the power cabinet (1) arranged successively from left to right, reactance cabinet (2) with exchange cabinet (3), IGBT module (4) is disposed with from top to bottom in described power cabinet (1), DC filter (5) and DC circuit breaker (6), mainframe box (7) is disposed with from top to bottom in described reactance cabinet (2), power panel (8) and reactor (11), described interchange cabinet (3) is disposed with A.C. contactor (9) and AC circuit breaker (10) from top to bottom, described reactance cabinet (2) with the dividing plate exchanging cabinet (3) is provided with alternating current filter (12), described alternating current filter (12) is positioned at reactance cabinet (2).
2. the photovoltaic DC-to-AC converter of a kind of integrated DC distribution as claimed in claim 1, it is characterized in that: the direct current that solar panel produces enters IGBT module (4) and is reverse into alternating current after DC circuit breaker (6) and DC filter (5), and the alternating current produced after inversion externally exports after current rectifying and wave filtering circuit, alternating current filter (12), A.C. contactor (9) and AC circuit breaker (10).
3. the photovoltaic DC-to-AC converter of a kind of integrated DC distribution as claimed in claim 2, it is characterized in that: described current rectifying and wave filtering circuit includes three groups of reactors (11), and often organize between reactor (11) and be connected with filter capacitor, above-mentioned reactor (11) and electric capacity form LC filter circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410785984.9A CN104467459A (en) | 2014-12-18 | 2014-12-18 | Photovoltaic inverter integrating direct current distribution |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410785984.9A CN104467459A (en) | 2014-12-18 | 2014-12-18 | Photovoltaic inverter integrating direct current distribution |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104467459A true CN104467459A (en) | 2015-03-25 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410785984.9A Pending CN104467459A (en) | 2014-12-18 | 2014-12-18 | Photovoltaic inverter integrating direct current distribution |
Country Status (1)
| Country | Link |
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| CN (1) | CN104467459A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106300432A (en) * | 2016-11-08 | 2017-01-04 | 中国东方电气集团有限公司 | A kind of Modular photovoltaic combining inverter of integrated DC distribution |
| CN107040148A (en) * | 2017-05-02 | 2017-08-11 | 北京群菱能源科技有限公司 | A kind of photovoltaic DC-to-AC converter |
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| CN202385009U (en) * | 2011-11-30 | 2012-08-15 | 常州佳讯光电产业发展有限公司 | Photovoltaic inverter |
| CN202856632U (en) * | 2012-08-23 | 2013-04-03 | 天津瑞能电气有限公司 | Photovoltaic grid-connected inverter |
| CN203119314U (en) * | 2013-01-09 | 2013-08-07 | 深圳市禾望电气有限公司 | Inverter cabinet for grid-connection photovoltaic power generation system |
| CN203166775U (en) * | 2013-01-05 | 2013-08-28 | 阳光电源股份有限公司 | Outdoor power supply apparatus |
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| CN103441689A (en) * | 2013-09-13 | 2013-12-11 | 南车株洲电力机车研究所有限公司 | Modular photovoltaic grid-connected inverter structure |
| CN103795270A (en) * | 2014-01-16 | 2014-05-14 | 北京能高自动化技术股份有限公司 | Water-cooled photovoltaic inverter |
| CN203760866U (en) * | 2014-04-17 | 2014-08-06 | 南车株洲电力机车研究所有限公司 | Integrated cabinet of photovoltaic power generation system |
| CN204349814U (en) * | 2014-12-18 | 2015-05-20 | 江苏方程电力科技有限公司 | A kind of photovoltaic DC-to-AC converter of integrated DC distribution |
-
2014
- 2014-12-18 CN CN201410785984.9A patent/CN104467459A/en active Pending
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| CN202856632U (en) * | 2012-08-23 | 2013-04-03 | 天津瑞能电气有限公司 | Photovoltaic grid-connected inverter |
| CN203166775U (en) * | 2013-01-05 | 2013-08-28 | 阳光电源股份有限公司 | Outdoor power supply apparatus |
| CN203119314U (en) * | 2013-01-09 | 2013-08-07 | 深圳市禾望电气有限公司 | Inverter cabinet for grid-connection photovoltaic power generation system |
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| CN103441689A (en) * | 2013-09-13 | 2013-12-11 | 南车株洲电力机车研究所有限公司 | Modular photovoltaic grid-connected inverter structure |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106300432A (en) * | 2016-11-08 | 2017-01-04 | 中国东方电气集团有限公司 | A kind of Modular photovoltaic combining inverter of integrated DC distribution |
| CN107040148A (en) * | 2017-05-02 | 2017-08-11 | 北京群菱能源科技有限公司 | A kind of photovoltaic DC-to-AC converter |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150325 |