CN212969566U

CN212969566U - Novel high-efficiency photovoltaic inverter

Info

Publication number: CN212969566U
Application number: CN202021881061.0U
Authority: CN
Inventors: 姚岛; 林驹; 雷禹
Original assignee: Institute Of Electronics And Electronics Guangdong Academy Of Sciences; Research Institute Of Heyuan Academy Of Sciences
Current assignee: Institute Of Electronics And Electronics Guangdong Academy Of Sciences; Research Institute Of Heyuan Academy Of Sciences
Priority date: 2020-09-01
Filing date: 2020-09-01
Publication date: 2021-04-13
Anticipated expiration: 2030-09-01

Abstract

The utility model discloses a novel high efficiency photovoltaic inverter belongs to photovoltaic inverter technical field, the power distribution box comprises a box body, be equipped with the heat dissipation fan through the lower extreme at the box, effectual acceleration is to the inside air flow of box, and then when avoiding long time use, the inside temperature of box is higher, and then improve the inside electrical component's of box life and stability in use, and be equipped with the mounting bracket through the inside at the box, the communication cabinet, direct current cabinet, contravariant cabinet, exchange cabinet and switch board are all installed on the mounting bracket, the convenient installation to electrical component, and be convenient for wire, the cost is saved, it is in disorder to avoid the wiring, conveniently maintain and overhaul, and the contravariant cabinet is parallelly connected to be constituteed through a plurality of dc-to-ac converters, improve the utility model discloses a conversion efficiency facilitates the use.

Description

Novel high-efficiency photovoltaic inverter

Technical Field

The utility model relates to a contrary electrical apparatus specifically is a novel reverse electrical apparatus of high efficiency photovoltaic, belongs to photovoltaic inverter technical field.

Background

The inverter is also called inverter, it is a converter which converts the direct current electric energy into the fixed frequency fixed voltage or frequency modulation voltage regulation alternating current, the photovoltaic is the short for solar photovoltaic power generation system, it is a photovoltaic effect which uses the solar cell semiconductor material, a new power generation system which directly converts the solar radiation energy into the electric energy, there are two modes of independent operation and grid-connected operation, it belongs to a new energy source, it is widely used at present, in the solar energy wide power generation system, it needs to use the inverter, it converts the direct current electric energy into the alternating current electric energy, but the present photovoltaic inverter has poor conversion efficiency when in use, and the wiring between each component is more complicated and messy, and when in long time use, the working environment temperature of the inverter is higher, it affects the service life, it is not convenient to use.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a novel high efficiency photovoltaic inverter just in order to solve above-mentioned problem, can accelerate conversion efficiency, and be convenient for carry out the wiring and maintain and improve life.

The utility model discloses a following technical scheme realizes above-mentioned purpose, a novel high efficiency photovoltaic inverter, the power distribution box comprises a box body, equal fixed mounting has the mounting bracket on the inner wall of box, inside one side of box fixed mounting has the contravariant cabinet on the mounting bracket, the inside opposite side of box fixed mounting has the direct current cabinet on the mounting bracket, the inside of box is located one side that the contravariant cabinet is relative on the mounting bracket respectively fixed mounting have ac cabinet, switch board and communication cabinet, one side of box articulates there is the chamber door, the chamber door is to open structure, just fixed surface installs the sunshading board on the outside of box.

Preferably, for the convenience with outside cable with the utility model discloses carry out electric connection, surface one side fixed mounting of box has the direct current cable, the direct current cable with direct current cabinet looks electric connection, the surface opposite side fixed mounting of box has the interchange cable, just the interchange cable with interchange cabinet looks electric connection.

Preferably, for the convenience of right the box is closed, and is convenient for right the inside equipment of box is observed, the observation window is installed to inlay on one side of the upper end of chamber door, just the vent has evenly been seted up to the lower extreme of chamber door.

Preferably, in order to improve the utility model discloses a stability in use and extension the utility model discloses inside electric life, the round hole has been seted up to the bottom of box, the inside of round hole is inlayed and is installed the heat dissipation fan.

Preferably, for the convenience of the utility model discloses fix, the equal fixed mounting in outside lower surface four corners of box has the support frame.

Preferably, for improving the utility model discloses a conversion efficiency, the inside even fixed mounting of contravariant cabinet has the dc-to-ac converter, just for parallelly connecting between the dc-to-ac converter, just the dc-to-ac converter adopts the IGBT dc-to-ac converter.

Preferably, for the convenience is right the utility model discloses inside electrical component controls, the equal electric connection of communication cabinet the direct current cabinet contravariant cabinet alternating current cabinet with the switch board, direct current cabinet electric connection contravariant cabinet, contravariant cabinet electric connection alternating current cabinet, alternating current cabinet electric connection the switch board.

The utility model has the advantages that: the utility model discloses a lower extreme at the box is equipped with the heat dissipation fan, and effectual acceleration is to the inside air flow of box, and then when avoiding long time use, the inside temperature of box is higher, and then improves the inside electrical components's of box life and stability in use, and is equipped with the mounting bracket through the inside at the box, and the convenient installation to electrical components, and be convenient for wire, practice thrift the cost, avoid the wiring in disorder, conveniently maintain and overhaul, and the contravariant cabinet is through the parallelly connected constitution of a plurality of dc-to-ac converters, improve the utility model discloses a conversion efficiency facilitates the use.

Drawings

Fig. 1 is a front view of the present invention;

fig. 2 is a cross-sectional top view of the present invention;

fig. 3 is a topology structure diagram of the present invention.

In the figure: 1. the box, 2, the mounting bracket, 3, the contravariant cabinet, 4, the direct current cabinet, 5, exchange cabinet, 6, chamber door, 7, the communication cabinet, 8, chamber door, 9, the sunshading board, 10, the direct current cable, 11, exchange cable, 12, observation window, 13, the vent, 14, the round hole, 15, the heat dissipation fan, 16, the support frame, 17, dc-to-ac converter.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Please refer to fig. 1-3, a novel high-efficiency photovoltaic inverter comprises a box body 1, wherein a mounting frame 2 is fixedly mounted on the inner wall of the box body 1, an inverter cabinet 3 is fixedly mounted on the mounting frame 2 on one side of the inside of the box body 1, a direct current cabinet 4 is fixedly mounted on the mounting frame 2 on the other side of the inside of the box body 1, an alternating current cabinet 5, a power distribution cabinet 6 and a communication cabinet 7 are respectively and fixedly mounted on the mounting frame 2 on one side of the inside of the box body 1 opposite to the inverter cabinet 3, a box door 8 is hinged to one side of the box body 1, the box door 8 is of a split structure, and a sun shield 9 is fixedly mounted on the outer.

As the utility model discloses a technical optimization scheme, surface one side fixed mounting of box 1 has direct current cable 10, and direct current cable 10 is connected with 4 looks electrical connections of direct current cabinet, and the surface opposite side fixed mounting of box 1 has alternating current cable 11, and alternating current cable 11 is connected with 5 looks electrical connections of alternating current cabinet, and then is convenient for be connected outside power supply line and transmission of electricity cable with direct current cable 10 and alternating current cable 11 respectively.

As the utility model discloses a technical optimization scheme, the observation window 12 is installed to inlay on one side of the upper end of chamber door 8, and the lower extreme of chamber door 8 has evenly seted up vent 13, is convenient for right the utility model discloses seal, and conveniently observe 1 inside electrical component of box through observation window 12.

As the utility model discloses a technical optimization scheme, round hole 14 has been seted up to box 1's bottom, and round hole 14's inside is inlayed and is installed heat dissipation fan 15, and the convenience is dispelled the heat to the electric elements of box 1 inside and is handled, and then improves electric elements's life.

As a technical optimization scheme of the utility model, the equal fixed mounting in surface four corners under the outside of box 1 has support frame 16, and is convenient right the utility model discloses install.

As the utility model discloses a technical optimization scheme, the even fixed mounting in inside of contravariant cabinet 3 has dc-to-ac converter 17, and for parallelly connected between the dc-to-ac converter 17, and dc-to-ac converter 17 adopts the IGBT dc-to-ac converter, improves the utility model discloses a conversion efficiency.

As a technical optimization scheme of the utility model, communication cabinet 7 equal electric connection direct current cabinet 4, contravariant cabinet 3, interchange cabinet 5 and switch board 6, direct current cabinet 4 electric connection contravariant cabinet 3, contravariant cabinet 3 electric connection interchange cabinet 5, interchange cabinet 5 electric connection switch board 6 is convenient for monitor the electrical components of box 1 inside through communication cabinet 7.

The utility model discloses when using, when using the utility model discloses a, will the utility model discloses a support frame 16 is installed in suitable position, and be connected outside photovoltaic output cable with direct current cable 10, be connected transmission cable with alternating current cable 11, make the direct current pass through direct current cabinet 4, and enter into in the alternating current cabinet 5 after inversion cabinet 3 converts the alternating current, and in alternating current cable 11 transmits the output cable, and then accomplish converting the direct current to the alternating current, and inversion cabinet 3's inside adopts a plurality of IGBT dc-to-ac converters to connect in parallel, and then improve conversion efficiency, and through external control, realize the current balance between the inverter bridge, can be effectual the total efficiency who improves photovoltaic inverter, and through communication cabinet 7, carry out data acquisition to direct current cabinet 4, inversion cabinet 3, alternating current cabinet 5 and switch board 6, and then be convenient for calculate subassembly voltage, The electric current, the temperature, average current and convenient and backstage communication, convenient to use, and through with communication cabinet 7, direct current cabinet 4, contravariant cabinet 3, exchange cabinet 5 and switch board 6 are all installed on mounting bracket 2, simplify the wiring, convenient maintenance, and the cost is reduced, and be equipped with heat dissipation fan 15 at the lower extreme of box 1, lower extreme at chamber door 8 is equipped with vent 13, accelerate the inside air flow of box 1, and then improve the life of the inside electrical component of box 1, and be equipped with sunshading board 9 at the upper surface of box 1, avoid sunshine to penetrate directly, place the inside temperature of box 1 and rise, and the convenient to use.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a novel reverse electrical apparatus of high efficiency photovoltaic, includes box (1), its characterized in that: equal fixed mounting has mounting bracket (2) on the inner wall of box (1), inside one side of box (1) fixed mounting has contravariant cabinet (3) on mounting bracket (2), the inside opposite side of box (1) fixed mounting has direct current cabinet (4) on mounting bracket (2), the inside of box (1) is located one side that contravariant cabinet (3) is relative there are alternating current cabinet (5), switch board (6) and communication cabinet (7) on mounting bracket (2) respectively fixed mounting, one side of box (1) articulates there is chamber door (8), chamber door (8) are for opening from opposite structure, just fixed surface installs sunshading board (9) on the outside of box (1).

2. The novel high-efficiency photovoltaic inverter according to claim 1, characterized in that: the utility model discloses a cabinet, including box (1), surface one side fixed mounting of box (1) has direct current cable (10), direct current cable (10) with direct current cabinet (4) looks electrical connection, the surface opposite side fixed mounting of box (1) has alternating current cable (11), just alternating current cable (11) with alternating current cabinet (5) looks electrical connection.

3. The novel high-efficiency photovoltaic inverter according to claim 1, characterized in that: an observation window (12) is embedded and installed on one side of the upper end of the box door (8), and ventilation openings (13) are uniformly formed in the lower end of the box door (8).

4. The novel high-efficiency photovoltaic inverter according to claim 1, characterized in that: round hole (14) have been seted up to the bottom of box (1), heat dissipation fan (15) are inlayed and are installed to the inside of round hole (14).

5. The novel high-efficiency photovoltaic inverter according to claim 1, characterized in that: four corners of the lower surface of the outer part of the box body (1) are fixedly provided with supporting frames (16).

6. The novel high-efficiency photovoltaic inverter according to claim 1, characterized in that: the inverter is characterized in that inverters (17) are uniformly and fixedly mounted inside the inverter cabinet (3), the inverters (17) are connected in parallel, and IGBT inverters are adopted by the inverters (17).

7. The novel high-efficiency photovoltaic inverter according to claim 6, characterized in that: the communication cabinet (7) is electrically connected with the direct current cabinet (4), the inversion cabinet (3), the alternating current cabinet (5) and the power distribution cabinet (6), the direct current cabinet (4) is electrically connected with the inversion cabinet (3), the inversion cabinet (3) is electrically connected with the alternating current cabinet (5), and the alternating current cabinet (5) is electrically connected with the power distribution cabinet (6).