CN204349814U - A kind of photovoltaic DC-to-AC converter of integrated DC distribution - Google Patents
A kind of photovoltaic DC-to-AC converter of integrated DC distribution Download PDFInfo
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- CN204349814U CN204349814U CN201420803209.7U CN201420803209U CN204349814U CN 204349814 U CN204349814 U CN 204349814U CN 201420803209 U CN201420803209 U CN 201420803209U CN 204349814 U CN204349814 U CN 204349814U
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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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- Photovoltaic Devices (AREA)
Abstract
The utility model relates to a kind of photovoltaic DC-to-AC converter of integrated DC distribution, 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).The photovoltaic DC-to-AC converter of a kind of integrated DC distribution of the utility model, it not only reduces the cost of a DC power distribution cabinet, maximum thermal source reactor and IGBT module is separated again, significantly improves the heat dissipating state in cabinet, improve device operation efficiency.
Description
Technical field
The utility model relates to a kind of photovoltaic DC-to-AC converter of integrated DC distribution, belongs 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 purpose of this utility model is to overcome above-mentioned deficiency, a kind of photovoltaic DC-to-AC converter of integrated DC distribution is provided, it not only reduces the cost of a DC power distribution cabinet, again maximum thermal source reactor and IGBT module are separated, significantly improve the heat dissipating state in cabinet, improve device operation efficiency.
The purpose of this utility model is achieved in that a kind of photovoltaic DC-to-AC converter of integrated DC distribution, it comprises the power cabinet arranged successively from left to right, reactance cabinet with exchange cabinet, IGBT module is disposed with from top to bottom in described power cabinet, DC filter and DC circuit breaker, mainframe box is disposed with from top to bottom in described reactance cabinet, power panel and reactor, 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, 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 utility model has following beneficial effect:
The photovoltaic DC-to-AC converter of a kind of integrated DC distribution of the utility model, 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 utility model.
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 utility model.
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 utility model, 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 |
|---|---|---|---|
| CN201420803209.7U CN204349814U (en) | 2014-12-18 | 2014-12-18 | A kind of photovoltaic DC-to-AC converter of integrated DC distribution |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420803209.7U CN204349814U (en) | 2014-12-18 | 2014-12-18 | A kind of photovoltaic DC-to-AC converter of integrated DC distribution |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204349814U true CN204349814U (en) | 2015-05-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420803209.7U Active CN204349814U (en) | 2014-12-18 | 2014-12-18 | A kind of photovoltaic DC-to-AC converter of integrated DC distribution |
Country Status (1)
| Country | Link |
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| CN (1) | CN204349814U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104467459A (en) * | 2014-12-18 | 2015-03-25 | 江苏方程电力科技有限公司 | Photovoltaic inverter integrating direct current distribution |
| CN109245563A (en) * | 2018-11-15 | 2019-01-18 | 北京金自天正智能控制股份有限公司 | A kind of power cabinet for large capacity synchronous machine stationary frequency starting |
| US20220271515A1 (en) * | 2021-02-19 | 2022-08-25 | Sungrow Power Supply Co., Ltd. | Power cabinet |
-
2014
- 2014-12-18 CN CN201420803209.7U patent/CN204349814U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104467459A (en) * | 2014-12-18 | 2015-03-25 | 江苏方程电力科技有限公司 | Photovoltaic inverter integrating direct current distribution |
| CN109245563A (en) * | 2018-11-15 | 2019-01-18 | 北京金自天正智能控制股份有限公司 | A kind of power cabinet for large capacity synchronous machine stationary frequency starting |
| US20220271515A1 (en) * | 2021-02-19 | 2022-08-25 | Sungrow Power Supply Co., Ltd. | Power cabinet |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |