CN104467459A - Photovoltaic inverter integrating direct current distribution - Google Patents

Photovoltaic inverter integrating direct current distribution Download PDF

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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
Authority
CN
China
Prior art keywords
cabinet
alternating current
filter
reactance
circuit breaker
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201410785984.9A
Other languages
Chinese (zh)
Inventor
张建兴
包虎平
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jiangsu Fangcheng Electric Science and Technology Co Ltd
Original Assignee
Jiangsu Fangcheng Electric Science and Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Jiangsu Fangcheng Electric Science and Technology Co Ltd filed Critical Jiangsu Fangcheng Electric Science and Technology Co Ltd
Priority to CN201410785984.9A priority Critical patent/CN104467459A/en
Publication of CN104467459A publication Critical patent/CN104467459A/en
Pending legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02MAPPARATUS 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
    • H02M7/00Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/003Constructional details, e.g. physical layout, assembly, wiring or busbar connections
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/50Photovoltaic [PV] energy
    • Y02E10/56Power conversion systems, e.g. maximum power point trackers

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

A kind of photovoltaic DC-to-AC converter of integrated DC distribution
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.
CN201410785984.9A 2014-12-18 2014-12-18 Photovoltaic inverter integrating direct current distribution Pending CN104467459A (en)

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

ID=52912977

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
CN (1) CN104467459A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
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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CN202334354U (en) * 2011-11-30 2012-07-11 常州佳讯光电产业发展有限公司 Photovoltaic inverter
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
CN103280705A (en) * 2013-05-13 2013-09-04 南车株洲电力机车研究所有限公司 Multifunctional integration photovoltaic power generation device
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

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CN202334354U (en) * 2011-11-30 2012-07-11 常州佳讯光电产业发展有限公司 Photovoltaic inverter
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
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
CN103280705A (en) * 2013-05-13 2013-09-04 南车株洲电力机车研究所有限公司 Multifunctional integration photovoltaic power generation device
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
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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

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Cited By (2)

* Cited by examiner, † Cited by third party
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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Application publication date: 20150325