CN103259421A - Photovoltaic inverter - Google Patents
Photovoltaic inverter Download PDFInfo
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- CN103259421A CN103259421A CN2013101799182A CN201310179918A CN103259421A CN 103259421 A CN103259421 A CN 103259421A CN 2013101799182 A CN2013101799182 A CN 2013101799182A CN 201310179918 A CN201310179918 A CN 201310179918A CN 103259421 A CN103259421 A CN 103259421A
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- photovoltaic
- cabinet
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- module
- heat
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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
The invention discloses a photovoltaic inverter which comprises a cabinet body, a boosting module and an inversion module, wherein the boosting module and the inversion module are arranged in the cabinet body, and cooling fins are arranged on the boosting module and the inversion module. The photovoltaic inverter further comprises a fan which is arranged in the cabinet body. An air inlet and an air outlet are formed in the cabinet, and the fan enables gas to enter the cabinet body and to pass by the air inlet, the cooling fins and the air outlet in sequence. When the photovoltaic inverter works, modules with a larger heating amount are the boosting module and the inversion module, the heat generated by the boosting module and the inversion module can be transmitted to the cooling fins, the fan enables the gas to enter the cabinet body through the air inlet, to pass by the cooling fins and to flow out of the cabinet body through the air outlet. Each cooling fin can dissipate heat by itself, when the gas passes by the cooling fins, heat exchanging occurs between the cooling fins and the flowing gas, and the heat can be transmitted out of the cabinet body along with the flowing gas. Therefore, heat dissipating capacity of the cooling fins is greatly improved, a heat-dissipating effect is provided, and the heat-dissipating requirement of large-power photovoltaic inverters can be met.
Description
Technical field
The present invention relates to the photovoltaic technology field, particularly relate to a kind of photovoltaic DC-to-AC converter.
Background technology
Photovoltaic generating system is to utilize solar cell directly solar energy to be converted to the electricity generation system of electric energy, be characterized in reliability height, long service life, free from environmental pollution, can independently generate electricity and can be incorporated into the power networks.
The critical piece of photovoltaic generating system comprises solar cell array, batteries, charging-discharging controller, inverter.Having under the light conditions, solar cell array absorbs luminous energy, and transform light energy is become electric energy; Batteries is stored the electric energy of solar cell array conversion; Charging-discharging controller can prevent overcharging of batteries or overdischarge; Inverter is responsible for converting direct current to alternating current, and alternating current can be independently-powered, also can be connected to the grid.
Early stage photovoltaic generating system can satisfy the need for electricity of no network users based on from the net type, and along with the development of photovoltaic technology, the photovoltaic generation amount increases gradually, and the demand of the photovoltaic generating system of grid type is also increased gradually, and its power requirement is also more and more higher.
The photovoltaic DC-to-AC converter of the photovoltaic generating system of grid type comprises boost module, inversion module and filter inductance, boost module is converted to high voltage direct current with the direct current that solar cell array produces, inversion module is converted to High Level AC Voltage with high voltage direct current, behind the High Level AC Voltage process filtering inductor filter, frequency and waveform all meet the requirement of being incorporated into the power networks of electrical network, can be connected to the grid.
In the photovoltaic DC-to-AC converter work, boost module and inversion module can produce a large amount of heats, and the small-power photovoltaic DC-to-AC converter below 10 kilowatts is generally the two fin is set, and the heat of the two generation is transmitted on the fin, is dispersed in the ambient air through fin.For the photovoltaic DC-to-AC converter more than 10 kilowatts, because power is excessive, fin only is set can not satisfies radiating requirements, if can not efficiently radiates heat, might burn photovoltaic DC-to-AC converter, even may produce blast, there is serious potential safety hazard.
Therefore, the radiating requirements when how to make the cooling system of photovoltaic DC-to-AC converter can satisfy it to use power big is that those skilled in the art are badly in need of the technical problem that solves at present.
Summary of the invention
The purpose of this invention is to provide a kind of photovoltaic DC-to-AC converter, the radiating effect of this photovoltaic DC-to-AC converter is better, the radiating requirements in the time of can satisfying than ambassador's usefulness power.
In order to realize above-mentioned technical purpose, the invention provides a kind of photovoltaic DC-to-AC converter, comprise cabinet, be arranged at boost module and inversion module in the described cabinet, described boost module and described inversion module are equipped with fin, also comprise the fan of being located in the described cabinet, described cabinet is provided with air inlet and air outlet, and described fan makes gas enter described cabinet and also passes through described air inlet successively, states fin and described air outlet.
Preferably, described air inlet is positioned at the downside of the side plate of the lower cover of described cabinet and described cabinet, and described air outlet is positioned at the upper cover plate of described cabinet.
Preferably, the filter inductance of described photovoltaic DC-to-AC converter is positioned at the downside of described cabinet, and described boost module and described inversion module all are positioned at the upside of described cabinet.
Preferably, the drive plate of described boost module and described inversion module is positioned at the upside of described cabinet.
Preferably, the center of described boost module, described inversion module, described filter inductance and described fan all is positioned on the same vertical straight line, and described vertical straight line passes the center of described lower cover.
Preferably, the suitable power bracket of described photovoltaic DC-to-AC converter is 10 kilowatts to 200 kilowatts.
Preferably, the power of described photovoltaic DC-to-AC converter is 50 kilowatts.
Preferably, the power of described photovoltaic DC-to-AC converter is 100 kilowatts.
Photovoltaic DC-to-AC converter provided by the invention, comprise cabinet, be arranged at boost module and inversion module in the cabinet, boost module and inversion module are equipped with fin, also comprise the fan of being located in the cabinet, cabinet is provided with air inlet and air outlet, and fan makes gas enter cabinet and passes through air inlet, fin and air outlet successively.
In the photovoltaic DC-to-AC converter course of work, the module that caloric value is bigger is boost module and inversion module, and the heat that boost module and inversion module produce can pass to fin, and fan can make gas enter cabinet from air inlet, the fin of flowing through flows out cabinet from air outlet.Fin itself can distribute certain heat, when gas is flowed through fin, fin and flowing gas produce heat exchange, heat can pass out cabinet with flowing gas, improved the heat dissipation capacity of fin greatly, have better radiating effect, the cooling system of this structure can satisfy the radiating requirements of using the bigger photovoltaic DC-to-AC converter of power.
The power bracket that the photovoltaic DC-to-AC converter of this structure mainly is suitable for is 10 kilowatts to 200 kilowatts, and preferred power is 50 kilowatts or 100 kilowatts.
Concrete, air inlet can facility in the downside of the side plate of the lower cover of cabinet and cabinet, air outlet can be arranged at the upper cover plate of cabinet, under the effect of fan, gas enters cabinet from the downside of lower cover and side plate, flow through each module and fin in the cabinet flow out cabinet from upper cover plate then.The gas that enters cabinet not only can be accelerated the heat radiation of fin, and it can also be each module cooling in the cabinet.
Further, the filter inductance of photovoltaic DC-to-AC converter is positioned at the downside of cabinet, and boost module and inversion module all are positioned at the upside of cabinet.The gas that enters cabinet from the air inlet filter inductance of flowing through earlier can be lowered the temperature for filter inductance, because the heat that filter inductance self produces is less, can also accelerate the heat radiation of fin when the gas of the filter inductance of flowing through is flowed through fin.
In a kind of preferred mode, the drive plate of boost module and inversion module is positioned at the upside of cabinet.The course of work of boost module and inversion module is controlled by master control borad, and master control borad sends control command to drive plate, specifically drives boost module and inversion module by drive plate then.The radiating effect of this photovoltaic DC-to-AC converter is better, can shorten the distance of drive plate and boost module and inversion module, can reduce like this because the parasitic capacitance that distance produces makes photovoltaic DC-to-AC converter have higher job stability.
In the another kind of preferred mode, the center of boost module, inversion module, filter inductance and fan all is positioned on the same vertical straight line, and vertical straight line passes the center of lower cover.The center of the lower cover of the cabinet of photovoltaic DC-to-AC converter is the center of base for supporting, and the center of each device is all by the center of base for supporting, and whole stability better, can make that integrally-built horizontal area is less, each device storehouse upwards one by one in the cabinet, compact conformation, conserve space.
Description of drawings
Fig. 1 is the structural representation of a kind of embodiment of photovoltaic DC-to-AC converter provided by the present invention;
Fig. 2 is the structural representation of the cabinet of photovoltaic DC-to-AC converter shown in Figure 1;
Fig. 3 is the structural representation of another angle of the cabinet of photovoltaic DC-to-AC converter shown in Figure 1.
Wherein, the Reference numeral among Fig. 1 to Fig. 3 is as follows:
Cabinet 1; Lower cover 11; Side plate 12; Upper cover plate 13; Boost module 2; Inversion module 3; Fin 4; Fan 5; Air inlet 6; Air outlet 7; Filter inductance 8; Drive plate 9.
Embodiment
Core of the present invention provides a kind of photovoltaic DC-to-AC converter, and the radiating effect of this photovoltaic DC-to-AC converter is better, the radiating requirements in the time of can satisfying than ambassador's usefulness power.
In order to make those skilled in the art person understand the present invention program better, the present invention is described in further detail below in conjunction with the drawings and specific embodiments.
Please refer to Fig. 1, Fig. 1 is the structural representation of a kind of embodiment of photovoltaic DC-to-AC converter provided by the present invention.
In a kind of concrete execution mode, the invention provides a kind of photovoltaic DC-to-AC converter, comprise cabinet 1, be arranged at boost module 2 and inversion module 3 in the cabinet 1, boost module 2 and inversion module 3 are equipped with fin 4, also comprise the fan of being located in the cabinet 15, cabinet 1 is provided with air inlet 6 and air outlet 7, and fan 5 makes gas enter cabinet 1 and passes through air inlet 6, fin 4 and air outlet 7 successively.
In the photovoltaic DC-to-AC converter course of work, the module that caloric value is bigger is boost module 2 and inversion module 3, and the heat that boost module 2 and inversion module 3 produce can pass to fin 4, and fan 5 can make gas enter cabinet 1 from air inlet 6, the fin 4 of flowing through flows out cabinets 1 from air outlet 7.
Fin 4 itself can distribute certain heat, when gas is flowed through fin 4, fin 4 produces heat exchange with flowing gas, heat can pass out cabinet 1 with flowing gas, improved the heat dissipation capacity of fin 4 greatly, have better radiating effect, the cooling system of this structure can satisfy the radiating requirements of using the bigger photovoltaic DC-to-AC converter of power.
Concrete, the power bracket that the photovoltaic DC-to-AC converter of this structure is suitable for is 10 kilowatts to 200 kilowatts, this scope is at present, the power bracket that photovoltaic DC-to-AC converter is relatively more commonly used.Use power only arranges fin 4 usually less than 10 kilowatts radiator, as the photovoltaic DC-to-AC converter of needs use power greater than 200 kilowatts, is used in combination by the photovoltaic DC-to-AC converter less than 200 kilowatts usually.
It is 50 kilowatts or 100 kilowatts that the photovoltaic DC-to-AC converter of this structure preferably uses power.The heat transferred fin 4 that produces during photovoltaic DC-to-AC converter work, by the outside radiations heat energy of the plate of fin 4, radiating effect is accelerated in this process medium fluid convection current.The photovoltaic DC-to-AC converter of this structure has taken full advantage of heat loss through conduction, heat loss through radiation and heat loss through convection, makes its main heater members energy operate as normal, and inversion efficiency significantly improves.
In the photovoltaic DC-to-AC converter course of work, boost module 2 is converted to high voltage direct current with the direct current that solar cell array produces, inversion module 3 is converted to High Level AC Voltage with high voltage direct current, after 8 filtering of High Level AC Voltage process filter inductance, frequency and waveform all meet the requirement of being incorporated into the power networks of electrical network, can be connected to the grid.
Main thermal source is IGBT(insulated gate twin-stage transistor npn npn in boost module 2 and the inversion module 3), IGBT can be installed on the fin 4, fan 5 can be arranged on the downside of fin 4, and the flowing gas that produces when the blade of fan 5 rotates just blows to the plate of fin 4.
Please refer to Fig. 2 and Fig. 3, Fig. 2 is the structural representation of the cabinet of photovoltaic DC-to-AC converter shown in Figure 1, and Fig. 3 is the structural representation of another angle of the cabinet of photovoltaic DC-to-AC converter shown in Figure 1.
Concrete, air inlet 6 can be positioned at the downside of the side plate 12 of the lower cover 11 of cabinet 1 and cabinet 1, and air outlet 7 can be positioned at the upper cover plate 13 of cabinet 1.
The cabinet 1 of this structure, under the effect of fan 5, gas will enter cabinet 1 from the downside of lower cover 11 and side plate 12, and each module and fin 4 in the cabinet 10 of flowing through flow out cabinet 1 from upper cover plate 11 then.
After the convection gas that is produced by fan and the temperature difference entered cabinet 1, the whole cabinet 1 of flowing through not only can be accelerated the heat radiation of fin 4, and it can also be each module cooling in the cabinet 1.
Further, the filter inductance 8 of photovoltaic DC-to-AC converter is positioned at the downside of cabinet 1, and boost module 2 and inversion module 3 all are positioned at the upside of cabinet 1.
As shown in Figure 1, gas enters cabinet 1 from the air inlet 6 of lower cover 11, the filter inductance 8 of flowing through earlier, can with filter inductance 8 frequent heat exchanges, be filter inductance 8 coolings.Because the heat that filter inductance 8 self produces is less, the gas of the filter inductance 8 of the flowing through fin 4 of flowing through again can also be accelerated the heat radiation of fin 4.
According to the use power of photovoltaic DC-to-AC converter, can determine the power that each module consumes, determine the caloric value of whole photovoltaic DC-to-AC converter; According to the working temperature of each module, can determine the temperature rise of each module again; Can determine the area of air inlet 6 and air outlet 7 then.
In the another kind of concrete execution mode, the drive plate 9 of boost module 2 and inversion module 3 also is positioned at the upside of cabinet 1.
The course of work of boost module 2 and inversion module 3 is controlled by master control borad, and master control borad sends control command to drive plate 9, then by drive plate 9 concrete boost module 2 and the inversion modules 3 of driving.If can not in time dispel the heat during 3 work of boost module 2 and inversion module, high temperature makes the work that drive plate 9 can not be stable, if drive plate 9 is far away with the distance of boost module 2 and inversion module 3, can produce parasitic capacitance, also can influence the stability of drive plate 9 work.
The radiating effect of this photovoltaic DC-to-AC converter is better, drive plate 9 can be arranged on boost module 2 and inversion module 3 next doors, drive plate 9 is shorter with the distance of boost module 2 and inversion module 3, can reduce because the parasitic capacitance that distance produces, radiating effect is better simultaneously, each device all can operate as normal, makes photovoltaic DC-to-AC converter have higher job stability.
In the respective embodiments described above, the center of the boost module 2 of photovoltaic DC-to-AC converter, inversion module 3, filter inductance 8 and fan 5 all is positioned on the same vertical straight line, and vertical straight line passes the center of lower cover 11.
The center of the lower cover 11 of the cabinet 1 of photovoltaic DC-to-AC converter is the center of base for supporting, equal center by base for supporting, the center of each device in the cabinet 1, whole stability better, can make that integrally-built horizontal area is less, each device storehouse upwards one by one in the cabinet 1, compact conformation, conserve space.Base for supporting can adopt four-wheel plinth as shown in Figure 2, is convenient to mobile.
More than photovoltaic DC-to-AC converter provided by the present invention is described in detail.Used specific case herein principle of the present invention and execution mode are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof.Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention, can also carry out some improvement and modification to the present invention, these improvement and modification also fall in the protection range of claim of the present invention.
Claims (8)
1. photovoltaic DC-to-AC converter, comprise cabinet (1), be arranged at boost module (2) and inversion module (3) in the described cabinet (1), described boost module (2) and described inversion module (3) are equipped with fin (4), it is characterized in that, also comprise the fan of being located in the described cabinet (1) (5), described cabinet (1) is provided with air inlet (6) and air outlet (7), and described fan (5) makes gas enter described cabinet (1) and also passes through described air inlet (6) successively, states fin (4) and described air outlet (7).
2. photovoltaic DC-to-AC converter as claimed in claim 1, it is characterized in that, described air inlet (6) is positioned at the downside of the side plate (12) of the lower cover (11) of described cabinet (1) and described cabinet (1), and described air outlet (7) is positioned at the upper cover plate (13) of described cabinet (1).
3. photovoltaic DC-to-AC converter as claimed in claim 2, it is characterized in that, the filter inductance of described photovoltaic DC-to-AC converter (8) is positioned at the downside of described cabinet (1), and described boost module (2) and described inversion module (3) all are positioned at the upside of described cabinet (1).
4. photovoltaic DC-to-AC converter as claimed in claim 3 is characterized in that, the drive plate (9) of described boost module (2) and described inversion module (3) is positioned at the upside of described cabinet (1).
5. photovoltaic DC-to-AC converter as claimed in claim 4, it is characterized in that, the center of described boost module (2), described inversion module (3), described filter inductance (8) and described fan (5) all is positioned on the same vertical straight line, and described vertical straight line passes the center of described lower cover (11).
6. as each described photovoltaic DC-to-AC converter of claim 1 to 5, it is characterized in that the power bracket that described photovoltaic DC-to-AC converter is suitable for is 10 kilowatts to 200 kilowatts.
7. photovoltaic DC-to-AC converter as claimed in claim 6 is characterized in that, the power of described photovoltaic DC-to-AC converter is 50 kilowatts.
8. photovoltaic DC-to-AC converter as claimed in claim 6 is characterized in that, the power of described photovoltaic DC-to-AC converter is 100 kilowatts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101799182A CN103259421A (en) | 2013-05-15 | 2013-05-15 | Photovoltaic inverter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101799182A CN103259421A (en) | 2013-05-15 | 2013-05-15 | Photovoltaic inverter |
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| Publication Number | Publication Date |
|---|---|
| CN103259421A true CN103259421A (en) | 2013-08-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013101799182A Pending CN103259421A (en) | 2013-05-15 | 2013-05-15 | Photovoltaic inverter |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112996327A (en) * | 2021-02-19 | 2021-06-18 | 阳光电源股份有限公司 | Power cabinet |
| CN114375141A (en) * | 2022-01-19 | 2022-04-19 | 广州奥鹏能源科技有限公司 | Heat dissipation air duct and energy storage device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2170029A2 (en) * | 2008-09-26 | 2010-03-31 | Rockwell Automation Technologies, Inc. | Power electronic module cooling system and method |
| CN201805346U (en) * | 2010-09-27 | 2011-04-20 | 苏州西典机电有限公司 | General current conversion module |
| CN201878033U (en) * | 2010-12-02 | 2011-06-22 | 浙江海得新能源有限公司 | Inverter |
| CN202550898U (en) * | 2012-04-22 | 2012-11-21 | 上海发电设备成套设计研究院 | Inversion power unit chassis assembling structure of cascade-type frequency converter |
| CN202737781U (en) * | 2012-08-09 | 2013-02-13 | 中国西电电气股份有限公司 | Photovoltaic inverter |
-
2013
- 2013-05-15 CN CN2013101799182A patent/CN103259421A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2170029A2 (en) * | 2008-09-26 | 2010-03-31 | Rockwell Automation Technologies, Inc. | Power electronic module cooling system and method |
| CN201805346U (en) * | 2010-09-27 | 2011-04-20 | 苏州西典机电有限公司 | General current conversion module |
| CN201878033U (en) * | 2010-12-02 | 2011-06-22 | 浙江海得新能源有限公司 | Inverter |
| CN202550898U (en) * | 2012-04-22 | 2012-11-21 | 上海发电设备成套设计研究院 | Inversion power unit chassis assembling structure of cascade-type frequency converter |
| CN202737781U (en) * | 2012-08-09 | 2013-02-13 | 中国西电电气股份有限公司 | Photovoltaic inverter |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112996327A (en) * | 2021-02-19 | 2021-06-18 | 阳光电源股份有限公司 | Power cabinet |
| CN112996327B (en) * | 2021-02-19 | 2023-08-15 | 阳光电源股份有限公司 | Power cabinet |
| CN114375141A (en) * | 2022-01-19 | 2022-04-19 | 广州奥鹏能源科技有限公司 | Heat dissipation air duct and energy storage device |
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Application publication date: 20130821 |