CN214850932U

CN214850932U - Medium-high power frequency converter reliability structure

Info

Publication number: CN214850932U
Application number: CN202120470277.6U
Authority: CN
Inventors: 沈勤锋; 谭瑞民; 杨伯群; 罗文东; 彭胜军
Original assignee: Jiangxi Anbaichuan Electric Co ltd
Current assignee: Jiangxi Anbaichuan Electric Co ltd
Priority date: 2021-08-25
Filing date: 2021-08-25
Publication date: 2021-11-23
Anticipated expiration: 2031-08-25

Abstract

The utility model relates to a converter equipment technical field just discloses a well high-power converter reliability structure, including unable adjustment base, unable adjustment base's top fixedly connected with fixed stop, be formed with the wind channel between unable adjustment base and the fixed stop, fixed base and fixed stop's the fixed mounting have cooling blower between the leftmost side, IGBT is installed in the left side at fixed stop top, the IGBT aviation baffle is installed at unable adjustment base's top and the below that is located IGBT, the IGBT aviation baffle is located the wind channel, and the top fixed mounting of IGBT aviation baffle has the IGBT radiator. The reliable structure of the medium and high power frequency converter realizes effective isolation and sealing of the product air duct and greatly improves the environmental adaptability of the product through the design; the extremely low internal electromagnetic interference is realized, and the electromagnetic interference on electrical devices of customers is greatly reduced; the risk of production and assembly errors is reduced, and the production efficiency and the reliability of the product are greatly improved.

Description

Medium-high power frequency converter reliability structure

Technical Field

The utility model relates to a converter equipment technical field specifically is a well high-power converter reliability structure.

Background

The frequency converter is an electric control device which applies a frequency conversion technology and a microelectronic technology and controls an alternating current motor by changing the frequency mode of a working power supply of the motor; the frequency converter mainly comprises a rectifying unit (alternating current to direct current), a filtering unit, an inverting unit (direct current to alternating current), a braking unit, a driving unit, a detection unit micro-processing unit and the like. The frequency converter adjusts the voltage and frequency of an output power supply by switching on and off an internal IGBT, provides the required power supply voltage according to the actual requirement of the motor, and further achieves the purposes of energy saving and speed regulation. With the continuous improvement of the industrial automation degree, the frequency converter is also widely applied.

When the existing medium-high power frequency converter is used, the sealing structure of the product is complex, the internal circuit is disordered, and the assembly operation is difficult; the problem of internal electromagnetic interference is easy to occur, the assembly difficulty is high, and the production of equipment is inconvenient.

SUMMERY OF THE UTILITY MODEL

The utility model provides a not enough to prior art, the utility model provides a well high-power converter reliability structure possesses the high reliability product structure of demands such as reasonable overall arrangement realization high seal, low electromagnetic interference, easy equipment operation, has solved the problem that market conventional product seal structure is complicated, the inner line is chaotic, equipment operation difficulty.

The utility model provides a following technical scheme: a middle-high power frequency converter reliability structure comprises a fixed base, wherein a fixed clapboard is fixedly connected to the top of the fixed base, an air channel is formed between the fixed base and the fixed clapboard, a cooling fan is fixedly installed between the fixed base and the leftmost side of the fixed clapboard, an IGBT is installed on the left side of the top of the fixed clapboard, an IGBT air deflector is installed at the top of the fixed base and below the IGBT, the IGBT air deflector is located in the air channel, an IGBT radiator is fixedly installed at the top of the IGBT air deflector, the IGBT radiator is connected with the bottom of the IGBT, a reactor is fixedly installed in the air channel, the bottom of the reactor is connected with the top of the fixed base, a contactor is installed at the top of the fixed clapboard, the bottom of the contactor is connected with the reactor in the air channel, and a rectifier bridge is installed on the right side of the top of the fixed clapboard, the top of the fixed base is arranged below the rectifier bridge, the rectifier bridge air deflector is arranged in the air channel, the rectifier bridge radiator is fixedly arranged at the top of the rectifier bridge air deflector, and the top of the rectifier bridge radiator is connected with the bottom of the rectifier bridge.

Preferably, the reactor is located on the right side of the IGBT radiator, and a capacitor is installed between the IGBT radiator and the reactor.

Preferably, the top ends of the capacitors are connected with the fixed partition plates, the number of the capacitors is six, and the two capacitors are arranged in a transverse row.

Preferably, the number of the IGBTs is three, and the three IGBTs are arranged longitudinally.

Preferably, the number of the rectifier bridges is three, and the three rectifier bridges are also longitudinally arranged.

Compared with the prior art, the utility model discloses possess following beneficial effect:

1. according to the reliability structure of the medium-high power frequency converter, the independent IGBT radiator and the rectifier bridge radiator are used, and the series-type bus bar design can be realized through the innovative series-type layout of the IGBT, the capacitor, the reactor, the contactor and the rectifier bridge, so that an internal current loop is as simple as possible, and the internal electromagnetic interference is greatly reduced

2. According to the reliability structure of the medium-high power frequency converter, the IGBT air deflector and the rectifier bridge air deflector are added, the IGBT radiator and the rectifier bridge radiator are lifted, the main operation surface is arranged above the fixed partition plate, and the assembly operation is greatly optimized.

Through the design, the effective isolation and sealing of the product air duct are realized, and the environmental adaptability of the product is greatly improved; the extremely low internal electromagnetic interference is realized, and the electromagnetic interference on electrical devices of customers is greatly reduced; the risk of production and assembly errors is reduced, and the production efficiency and the reliability of the product are greatly improved.

Drawings

FIG. 1 is a side sectional view of the structure of the present invention;

FIG. 2 is a top view of the present invention;

fig. 3 is a circuit main loop diagram of the present invention.

In the figure: 1. a fixed base; 2. an IGBT air deflector; 3. an IGBT radiator; 4. a reactor; 5. a rectifier bridge air deflector; 6. a rectifier bridge heat sink; 7. a rectifier bridge; 8. a contactor; 9. fixing the partition board; 10. a capacitor; 11. an IGBT; 12. and (5) cooling the fan.

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.

Referring to fig. 1-3, a reliable structure of a medium-high power frequency converter comprises a fixed base 1, a fixed partition plate 9 is fixedly connected to the top of the fixed base 1, an air duct is formed between the fixed base 1 and the fixed partition plate 9, a cooling fan 12 is fixedly installed between the fixed base 1 and the leftmost side of the fixed partition plate 9, IGBTs 11 are installed on the left side of the top of the fixed partition plate 9, an IGBT air deflector 2 is installed on the top of the fixed base 1 and below an IGBT11, the IGBT air deflector 2 is located in the air duct, an IGBT radiator 3 is fixedly installed on the top of the IGBT air deflector 2, the IGBT radiator 3 is connected to the bottom of an IGBT11, the number of the IGBTs 11 is three, three IGBTs 11 are longitudinally arranged, a reactor 4 is fixedly installed inside the air duct, the bottom of the reactor 4 is connected to the top of the fixed base 1, a contactor 8 is installed on the top of the fixed partition plate 9, the bottom of the contactor 8 is connected to the reactor 4 inside the air duct, the reactor 4 is positioned on the right side of the IGBT radiator 3, capacitors 10 are installed between the IGBT radiator 3 and the reactor 4, the top ends of the capacitors 10 are connected with a fixed partition plate 9, the number of the capacitors 10 is six, two capacitors 10 are arranged in a transverse row, rectifier bridges 7 are installed on the right side of the top of the fixed partition plate 9, the number of the rectifier bridges 7 is three, the three rectifier bridges 7 are arranged in the same longitudinal direction, a rectifier bridge air deflector 5 is installed on the top of the fixed base 1 and below the rectifier bridges 7, the rectifier bridge air deflector 5 is positioned in an air duct, a rectifier bridge radiator 6 is fixedly installed on the top of the rectifier bridge air deflector 5, and the top of the rectifier bridge radiator 6 is connected with the bottom of the rectifier bridge 7;

by using the independent IGBT radiator 3 and the rectifier bridge radiator 6 and by the innovative series arrangement of the IGBT11, the capacitor 10, the reactor 4, the contactor 8 and the rectifier bridge 7, the design of a series busbar can be realized, an internal current loop is simple as much as possible, and the internal electromagnetic interference is greatly reduced;

by adding the IGBT air deflector 2 and the rectifier bridge air deflector 5, the IGBT radiator 3 and the rectifier bridge radiator 6 are lifted, the main operation surface is arranged above the fixed partition plate 9, and the assembly operation is greatly optimized.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a well high-power converter reliability structure, includes unable adjustment base (1), its characterized in that: the air-conditioning system is characterized in that a fixed partition plate (9) is fixedly connected to the top of the fixed base (1), an air channel is formed between the fixed base (1) and the fixed partition plate (9), a cooling fan (12) is fixedly installed between the fixed base (1) and the leftmost side of the fixed partition plate (9), an IGBT (11) is installed on the left side of the top of the fixed partition plate (9), an IGBT air deflector (2) is installed on the top of the fixed base (1) and below the IGBT (11), the IGBT air deflector (2) is located in the air channel, an IGBT radiator (3) is fixedly installed on the top of the IGBT air deflector (2), the IGBT radiator (3) is connected with the bottom of the IGBT (11), a reactor (4) is fixedly installed inside the air channel, the bottom of the reactor (4) is connected with the top of the fixed base (1), and a contactor (8) is installed on the top of the fixed partition plate (9), the bottom of contactor (8) is connected with reactor (4) inside the wind channel, just rectifier bridge (7) are installed to the right side at fixed stop (9) top, rectifier bridge aviation baffle (5) are installed to the top of unable adjustment base (1) and the below that is located rectifier bridge (7), rectifier bridge aviation baffle (5) are located the wind channel, and the top fixed mounting of rectifier bridge aviation baffle (5) has rectifier bridge radiator (6), the top of rectifier bridge radiator (6) is connected with the bottom of rectifier bridge (7).

2. The structure of claim 1, wherein the structure comprises: the reactor (4) is positioned on the right side of the IGBT radiator (3), and a capacitor (10) is arranged between the IGBT radiator (3) and the reactor (4).

3. The structure of claim 2, wherein the structure comprises: the top end of each capacitor (10) is connected with the corresponding fixed partition plate (9), the number of the capacitors (10) is six, and the two capacitors (10) are arranged in a transverse row.

4. The structure of claim 1, wherein the structure comprises: the number of the IGBTs (11) is three, and the three IGBTs (11) are longitudinally arranged.

5. The structure of claim 1, wherein the structure comprises: the number of the rectifier bridges (7) is three, and the three rectifier bridges (7) are also longitudinally arranged.