CN115604958A - Current transformer - Google Patents

Current transformer Download PDF

Info

Publication number
CN115604958A
CN115604958A CN202211338046.5A CN202211338046A CN115604958A CN 115604958 A CN115604958 A CN 115604958A CN 202211338046 A CN202211338046 A CN 202211338046A CN 115604958 A CN115604958 A CN 115604958A
Authority
CN
China
Prior art keywords
cabinet body
fan
direct current
cabinet
heat exchanger
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
CN202211338046.5A
Other languages
Chinese (zh)
Inventor
王佳丽
焦毕
廖远辉
潘欢
刘斐
饶沛南
李聪炟
徐慧琳
张雷励
廖骁林
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.)
Zhuzhou CRRC Times Electric Co Ltd
Original Assignee
Zhuzhou CRRC Times Electric 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 Zhuzhou CRRC Times Electric Co Ltd filed Critical Zhuzhou CRRC Times Electric Co Ltd
Priority to CN202211338046.5A priority Critical patent/CN115604958A/en
Publication of CN115604958A publication Critical patent/CN115604958A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K5/00—Casings, cabinets or drawers for electric apparatus
    • H05K5/02—Details
    • H05K5/0213—Venting apertures; Constructional details thereof
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS 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
    • H02M1/00—Details of apparatus for conversion
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS 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
    • H02M1/00—Details of apparatus for conversion
    • H02M1/44—Circuits or arrangements for compensating for electromagnetic interference in converters or inverters
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS 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
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/003—Constructional details, e.g. physical layout, assembly, wiring or busbar connections
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/02—Arrangements of circuit components or wiring on supporting structure
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/20—Modifications to facilitate cooling, ventilating, or heating
    • H05K7/2089—Modifications to facilitate cooling, ventilating, or heating for power electronics, e.g. for inverters for controlling motor
    • H05K7/20909—Forced ventilation, e.g. on heat dissipaters coupled to components

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Electromagnetism (AREA)
  • Cooling Or The Like Of Electrical Apparatus (AREA)

Abstract

The invention provides a converter, which comprises a cabinet body, wherein a reactor is arranged on one side of the front bottom layer of the cabinet body, a power module electrically connected with the reactor is arranged above the reactor, an air inlet is formed in the top of the cabinet body, an air outlet is formed in the bottom of the cabinet body, and a fan is arranged in the cabinet body at a position close to the air inlet. According to the converter provided by the invention, the devices are connected nearby through a compact design, the connection cost among the devices is reduced, key devices in the cabinet body are convenient to disassemble, assemble and maintain daily, and the heat dissipation effect can be effectively improved.

Description

Current transformer
Technical Field
The invention relates to the technical field of power electronic technology converter equipment, in particular to a converter.
Background
The energy storage converter (Power Conversion System, PCS) can control the charging and discharging process of the storage battery, carry out alternating current-direct current Conversion, directly supply Power to an alternating current load under the condition of no Power grid, effectively regulate and control Power resources, well balance Power consumption differences around the clock and in different seasons, regulate and control surplus, guarantee Power grid safety, and is an important prerequisite for renewable energy application and an effective means for realizing intelligent management of the Power grid.
At present, the outdoor energy storage converter in the prior art has the following problems: key devices such as a power module, an electric reactor and a switch in the converter cabinet are inconvenient to install and maintain; the heat dissipation performance of devices in the converter cabinet is poor, so that the failure rate of the devices is high; and the electromagnetic interference resistance of the devices in the converter cabinet is insufficient.
Disclosure of Invention
The technical problem to be solved by the invention is to overcome the defects of the prior art, and provide the converter, the devices are connected nearby through a compact design, the connection cost among the devices is reduced, key devices in the cabinet body are convenient to disassemble, assemble and maintain daily, and the heat dissipation effect can be effectively improved.
In order to solve the technical problems, the technical scheme provided by the invention is as follows:
the utility model provides a converter, includes the cabinet body, wherein, one of them side of the positive bottom of the cabinet body is provided with the reactor, the top of reactor be provided with rather than electric connection's power module, the top of the cabinet body is provided with the air intake, the bottom of the cabinet body is provided with the air outlet, the position department that the internal air intake that is close to of cabinet is provided with the fan.
According to the converter, the reactor with large weight and volume is arranged on one side of the lower layer of the front side of the cabinet body, so that the installation and maintenance of the reactor are facilitated, the overall gravity center of the cabinet body is guaranteed to be low, the structural stability of the cabinet body is improved, the power module is arranged above the reactor, the power module can be directly installed and maintained on the front side of the cabinet body, meanwhile, the reactor can be connected to the power module nearby, so that connecting copper bars are short, the needed copper bars are small in using amount, the aim of reducing the cost of the converter copper bars is fulfilled, a fan sucks air from an air inlet in the top of the cabinet body to enter the cabinet body, the sub-chambers sequentially dissipate heat of devices in the cabinet, and then air is exhausted from the bottom of the cabinet body, and the heat dissipation effect can be effectively improved.
With respect to the above technical solution, further improvements as described below can be made.
According to the current transformer, in a preferred embodiment, a direct current fuse is arranged on the other side of the front bottom layer of the cabinet body, a direct current isolation switch and an alternating current frame circuit breaker are arranged on the back bottom layer of the cabinet body in parallel, the direct current fuse is electrically connected with the direct current isolation switch, and the alternating current frame circuit breaker is electrically connected with the reactor.
Specifically, after a direct-current side external cable is connected to the converter from the bottom of the cabinet body through a direct-current fuse, the direct-current side external cable is connected to a direct-current isolation switch on the other side of the lower layer of the back face of the cabinet body nearby, so that a connection copper bar is short, the consumption of the required copper bar is small, and the purpose of reducing the cost of the converter copper bar is achieved.
Further, in a preferred embodiment, a dc capacitor battery located on the back of the power module is disposed on the upper layer of the back of the cabinet, and the dc capacitor battery is electrically connected to the power module.
Specifically, the direct current capacitor battery is located on the upper layer of the back face of the cabinet body and the back face of the power module, the power module is convenient to directly connect with the direct current capacitor battery through the composite busbar, and the direct current capacitor battery can be directly mounted, dismounted and maintained on the back face of the cabinet body.
Further, in a preferred embodiment, an ac electromagnetic interference filter and a dc electromagnetic interference filter are disposed in the cabinet.
An EMI filter (electromagnetic interference filter) interface is reserved on the AC side and the DC side in the cabinet body, so that the anti-electromagnetic interference capability of the converter can be improved.
Specifically, in a preferred embodiment, the ac electromagnetic interference filter includes an ac magnetic ring and an ac filter plate, the ac filter plate is located on the upper layer of the back of the cabinet, the ac magnetic ring is located on the position near the bottom of the back of the cabinet, the ac magnetic ring, the ac filter plate and the ac frame circuit breaker are electrically connected in sequence, the dc electromagnetic interference filter includes a dc magnetic ring and a dc filter plate, the dc magnetic ring is located on the position near the top of the bottom of the front of the cabinet, the dc filter plate is located on the side of the dc fuse, and the dc magnetic ring, the dc filter plate and the dc isolating switch are electrically connected in sequence.
Specifically, the direct-current side magnetic ring is arranged above a direct-current fuse on the front face of the cabinet body, the direct-current side filter plate is arranged below the direct-current fuse, the alternating-current side magnetic ring is arranged below the alternating-current frame circuit breaker, and the alternating-current side filter plate is arranged on one side above the direct-current capacitor battery. The direct current EMI filter is close to the direct current side of the converter, and is conveniently electrically connected with the direct current side of the converter, and the alternating current EMI filter is close to the alternating current side of the converter, and is conveniently electrically connected with the alternating current side of the converter.
Specifically, in a preferred embodiment, the blower includes a main blower, a first auxiliary blower and a second auxiliary blower, wherein the main blower and the first auxiliary blower are adjacently arranged and located at a position close to the air inlet on the front side of the cabinet, and the second auxiliary blower is located at a position close to the air inlet on the back side of the cabinet.
Specifically, the heat dissipation channel is: the main fan sucks air from an air inlet at a louver at the top of the cabinet body to enter the cabinet body, dissipates heat of the power module and the reactor, and then exhausts air from an air outlet at the bottom of the cabinet body; the first auxiliary fan sucks air from the louver at the top of the cabinet body to enter the cabinet, dissipates heat of the control device and the direct current fuse in sequence, and then exhausts air from the bottom of the cabinet body; the second auxiliary fan is induced draft from cabinet body top tripe department and gets into in the cabinet, dispels the heat to direct current capacitor cell, filter capacitor, direct current isolator, interchange frame circuit breaker in proper order, air-out from cabinet body bottom again. The control device is arranged on the side face of the power module and is conveniently electrically connected with the power module.
Further, in a preferred embodiment, the cabinet is provided with a heat exchanger for dissipating heat of the devices inside the cabinet.
Realize power module, reactor and electrical apparatus cavity locellus heat dissipation in the cabinet through the heat exchanger, both promoted the radiating efficiency, improved the protection level of the cabinet body again, the cabinet body can be directly in outdoor use, need not to use the container to install, has greatly reduced converter self cost, has realized miniaturization and lightweight by a wide margin of the cabinet body.
Specifically, in a preferred embodiment, the fan includes a main fan, an external circulation fan and an internal circulation fan, wherein the main fan is located at a position on the front side of the cabinet body near the air inlet, the external circulation fan sucks cold air from the outside, enters the inside of the heat exchanger, and blows hot air in the heat exchanger to the outside, and the internal circulation fan blows the cold air in the inside of the heat exchanger into the cabinet body and realizes air circulation in the cabinet body.
Specifically, in a preferred embodiment, the internal circulation fan comprises a first internal circulation fan and a second internal circulation fan, wherein the first internal circulation fan is connected with the heat exchanger and is positioned on the side surface of the cabinet body near the top, and the second internal circulation fan is positioned at the bottom of the cabinet body.
Specifically, the main heat dissipation channel is: the main fan sucks air from an air inlet at a louver at the top of the cabinet body to enter the cabinet body, dissipates heat of the power module and the reactor, and then exhausts air from an air outlet at the bottom of the cabinet body; the secondary heat dissipation channel is as follows: dispel the heat through the heat exchanger to the internal device of cabinet, divide into extrinsic cycle and inner loop, the extrinsic cycle fan inhales cold wind from the external world and enters into inside the heat exchanger, blow in the hot-air in the heat exchanger into the air again, carry out heat exchange with the hot-blast of inner loop in the heat exchanger core is inside, take away the heat of inner loop, thereby reduce the inside temperature of heat exchanger, first inner loop fan blows in the internal cold wind of heat exchanger into the cabinet, dispel the heat to the internal device of cabinet in proper order, including the direct current capacitor bank, filter capacitor, direct current isolator, exchange frame circuit breaker, direct current fuse, second inner loop fan is located cabinet body bottom, make the interior air of cabinet circulate with the cooperation of first inner loop fan.
Further, in a preferred embodiment, the heat exchanger is disposed outside the rear door of the cabinet.
The heat exchanger is arranged outside the rear door of the cabinet body, so that the heat exchanger is convenient to install and maintain, the space in the cabinet is not occupied, the space in the cabinet is greatly saved, and the cabinet body is more miniaturized.
Compared with the prior art, the invention has the advantages that: realize the device through the compactedness design and connect nearby, reduce the connection cost between the device, the internal portion key device of cabinet is convenient for dismouting and routine maintenance, divides the cavity to dispel the heat to the device in the cabinet in proper order, can effectively promote the radiating effect.
Drawings
The invention will be described in more detail hereinafter on the basis of embodiments and with reference to the accompanying drawings. Wherein:
fig. 1 schematically shows the overall structure of a current transformer of embodiment 1 of the present invention;
fig. 2 schematically shows the overall structure of a current transformer of embodiment 2 of the present invention;
fig. 3 schematically shows a side view structure of a current transformer of embodiment 2 of the present invention;
fig. 4 schematically shows a rear view structure of a current transformer of embodiment 2 of the present invention;
FIG. 5 schematically illustrates an internal front side device layout of a current transformer in accordance with an embodiment of the present invention;
FIG. 6 schematically illustrates an internal backside device layout for a current transformer in accordance with an embodiment of the present invention;
fig. 7 schematically shows a heat dissipation scheme of a current transformer of embodiment 1 of the present invention;
fig. 8 schematically shows a heat dissipation scheme of a current transformer of embodiment 1 of the present invention;
fig. 9 schematically shows a heat dissipation scheme of a current transformer of embodiment 2 of the present invention;
fig. 10 schematically shows a heat dissipation scheme of a current transformer of embodiment 2 of the present invention.
In the drawings, like parts are provided with like reference numerals. The figures are not drawn to scale.
Detailed Description
The invention will be further explained in detail with reference to the figures and the embodiments without thereby limiting the scope of protection of the invention.
Fig. 1 schematically shows the overall structure of a current transformer of embodiment 1 of the present invention. Fig. 2 schematically shows the overall structure of a current transformer of embodiment 2 of the present invention. Fig. 3 schematically shows a side view structure of a current transformer of embodiment 2 of the present invention. Fig. 4 schematically shows a rear view structure of a current transformer of embodiment 2 of the present invention. Fig. 5 schematically shows an internal front side device layout of a current transformer according to an embodiment of the present invention. Fig. 6 schematically shows an internal back side device layout for a current transformer of an embodiment of the present invention. Fig. 7 schematically shows a heat dissipation scheme of a current transformer of embodiment 1 of the present invention. Fig. 8 schematically shows a heat dissipation scheme of a current transformer of embodiment 1 of the present invention. Fig. 9 schematically shows a heat dissipation scheme of a current transformer of embodiment 2 of the present invention. Fig. 10 schematically shows a heat dissipation scheme of a current transformer of embodiment 2 of the present invention.
Example 1
As shown in fig. 1, 5 and 6, the converter 100 of the present embodiment includes a cabinet, wherein a reactor 2 is disposed on one side of a front bottom layer of the cabinet, a power module 1 electrically connected to the reactor 2 is disposed in a cavity above the reactor 2, an air inlet 7 is disposed at a top of the cabinet, an air outlet 8 is disposed at a bottom of the cabinet, and a fan is disposed at a position close to the air inlet 7 in the cabinet.
According to the converter provided by the embodiment of the invention, the reactor with large weight and volume is arranged on one side of the lower layer of the front side of the cabinet body, so that the installation and maintenance of the reactor are convenient, the overall gravity center of the cabinet body is ensured to be lower, the stability of the structure of the cabinet body is improved, the power module is arranged above the reactor, the power module can be directly installed and maintained from the front side of the cabinet body, meanwhile, the reactor can be connected from the power module nearby, so that the connecting copper bars are shorter, the required copper bars are less in use, and the aim of reducing the cost of the converter copper bars is fulfilled.
As shown in fig. 5, in the present embodiment, in particular, the control device 4 disposed opposite to the power module is provided in the cavity on the upper front side of the cabinet.
As shown in fig. 6, in the present embodiment, specifically, a dc fuse 3 is disposed on the other side of the front bottom layer of the cabinet, a dc isolation switch 9 and an ac frame circuit breaker 10 are disposed in parallel on the back bottom layer of the cabinet, the dc fuse 3 is electrically connected to the dc isolation switch 9, and the ac frame circuit breaker 10 is electrically connected to the reactor 2.
Specifically, after a direct-current side external cable is connected to the converter from the bottom of the cabinet body through a direct-current fuse, the direct-current side external cable is connected to a direct-current isolation switch on the other side of the lower layer of the back face of the cabinet body nearby, so that a connection copper bar is short, the consumption of the required copper bar is small, and the purpose of reducing the cost of the converter copper bar is achieved.
As shown in fig. 6, further, in this embodiment, a dc capacitor battery 11 located on the back of the power module 1 is disposed on the upper layer of the back of the cabinet, and the dc capacitor battery 11 is electrically connected to the power module 1. Specifically, the direct current capacitor battery is located on the upper layer of the back face of the cabinet body and the back face of the power module, the power module is convenient to directly connect with the direct current capacitor battery through the composite busbar, and the direct current capacitor battery can be directly mounted, dismounted and maintained on the back face of the cabinet body.
As shown in fig. 5 to 10, in the present embodiment, an ac electromagnetic interference filter and a dc electromagnetic interference filter are further disposed in the cabinet. An EMI filter (electromagnetic interference filter) interface is reserved on the AC side and the DC side in the cabinet body, so that the anti-electromagnetic interference capability of the converter can be improved.
Specifically, in this embodiment, the ac electromagnetic interference filter includes an ac magnetic ring 19 and an ac filter plate 18, the filter capacitor 12 and the ac filter plate 18 are located on the upper layer of the back of the cabinet, the ac magnetic ring 19 is located on the position near the bottom of the back of the cabinet, the ac magnetic ring 19, the ac filter plate 18 and the ac frame circuit breaker 10 are electrically connected in sequence, the dc electromagnetic interference filter includes a dc magnetic ring 20 and a dc filter plate 21, the dc magnetic ring 20 is located on the position near the top of the bottom of the front of the cabinet, the dc filter plate 21 is located on the side of the dc fuse 3, the dc magnetic ring 20, the dc filter plate 21 and the dc isolation switch 9 are electrically connected in sequence. Specifically, the dc magnetic ring 20 is disposed above the dc fuse 3 on the front side of the cabinet, the dc filter plate 21 is disposed below the dc fuse 3, the ac magnetic ring 19 is disposed below the ac frame circuit breaker 10, and the ac filter plate is disposed on the upper side of the dc capacitor 11. One end of the filter capacitor 12 is connected with the reactor 2, the other end of the filter capacitor is connected with the alternating current frame circuit breaker 10, and the filter capacitor 12 can effectively play a role in filtering, so that the circuit output is more smooth. The direct current EMI filter is close to the direct current side of the converter, and is conveniently electrically connected with the direct current side of the converter, and the alternating current EMI filter is close to the alternating current side of the converter, and is conveniently electrically connected with the alternating current side of the converter.
As shown in fig. 7 and fig. 8, in particular, in the present embodiment, the fan includes a main fan 5, a first auxiliary fan 6, and a second auxiliary fan 13, where the main fan 5 and the first auxiliary fan 6 are adjacently arranged and located at a position on the front of the cabinet near the air inlet 7, and the second auxiliary fan 13 is located at a position on the back of the cabinet near the air inlet 7. Specifically, the heat dissipation channel is: the main fan 5 sucks air from an air inlet 7 at a louver on the top of the cabinet body to enter the cabinet body, dissipates heat of the power module 1 and the reactor 2, and exhausts air from an air outlet 8 at the bottom of the cabinet body; the first auxiliary fan 6 sucks air from an air inlet 7 at a louver on the top of the cabinet body to enter the cabinet, dissipates heat of the control device 4 and the direct current fuse 3 in sequence, and exhausts air from the bottom of the cabinet body; the second auxiliary fan 13 is induced draft from the air inlet 7 at the top louver of the cabinet body and enters the cabinet, and dissipates heat of the direct current capacitor cell 11, the filter capacitor 12, the direct current isolating switch 9 and the alternating current frame circuit breaker 10 in sequence and then exhausts air from the air outlet 8 at the bottom of the cabinet body. The control device 4 is arranged on the side surface of the power module 1, and is convenient to be electrically connected with the power module 1.
Example 2
As shown in fig. 2 to 4 and 10, the present embodiment is different from the above embodiment 1 in that a heat exchanger 14 is disposed on the cabinet for dissipating heat from the devices inside the cabinet. After the heat exchanger is increased, because the electronic cavity does not need a straight vent, the sealing performance of the cabinet body is improved, therefore, the power module in the cabinet is realized through the heat exchanger, the reactor and the electric appliance cavity are subjected to cavity-divided heat dissipation, the heat dissipation efficiency is improved, the protection level of the cabinet body is also improved, the cabinet body can be directly used outdoors, the container is not needed to be used for installation, the heat exchanger can be applied to desert and coastal environments, the harsh environment requirements of sand blown by the wind and corrosive air are met, meanwhile, the service life of internal electronic devices is prolonged, the maintenance cost is reduced, the cost of the converter is greatly reduced, and the miniaturization and the light weight of the cabinet body are greatly realized.
As shown in fig. 10, in particular, in the present embodiment, the fans include a main fan 5, an external circulation fan 16 and an internal circulation fan, wherein the main fan 5 is located on the front of the cabinet near the air inlet 7, the external circulation fan 16 sucks cold air from 101 into the heat exchanger 14, and blows hot air in the heat exchanger 14 into the air from 102, and the internal circulation fan blows cold air from the inside of the heat exchanger 14 into the cabinet and realizes air circulation in the cabinet. Specifically, in this embodiment, the internal circulation fan includes a first internal circulation fan 15 and a second internal circulation fan 17, wherein the first internal circulation fan 15 is connected with the heat exchanger 14 and is located at a position close to the top of the side of the cabinet, and the second internal circulation fan 17 is located at the bottom of the cabinet.
As shown in fig. 9 and 10, specifically, the main heat dissipation channel is: the main fan 5 sucks air from an air inlet 7 at a louver on the top of the cabinet body to enter the cabinet body, dissipates heat of the power module 1 and the reactor 2, and exhausts air from an air outlet 8 at the bottom of the cabinet body; the secondary heat dissipation channel is as follows: the heat dissipation is carried out on devices inside the cabinet body through the heat exchanger 14 and is divided into outer circulation and inner circulation, the outer circulation fan 16 sucks cold air from a position 101 to enter the heat exchanger 14, hot air in the heat exchanger 14 is blown into the air from a position 102, heat exchange is carried out on the hot air inside the heat exchanger core and the hot air of the inner circulation, heat of the inner circulation is taken away, and therefore the temperature inside the heat exchanger 14 is reduced, the first inner circulation fan 15 blows the cold air inside the heat exchanger 14 into the cabinet body, heat dissipation is carried out on the devices inside the cabinet body in sequence, the heat dissipation device comprises a direct current capacitor pool 11, a filter capacitor 12, a direct current isolating switch 9, an alternating current frame circuit breaker 10 and a direct current fuse 3, and a second inner circulation fan 17 is located at the bottom of the cabinet body and matched with the first inner circulation fan 15 to enable the air inside the cabinet body to circulate.
Further, in the present embodiment, as shown in fig. 2, the heat exchanger 14 is disposed outside the rear door of the cabinet. The heat exchanger is arranged outside the rear door of the cabinet body, so that the heat exchanger is convenient to install and maintain, the space in the cabinet is not occupied, the space in the cabinet is greatly saved, and the cabinet body is more miniaturized.
According to the embodiment, the converter provided by the invention has the advantages that the devices are connected nearby through a compact design, the connection cost among the devices is reduced, key devices in the cabinet body are convenient to disassemble, assemble and maintain daily, and the heat dissipation effect can be effectively improved.
While the invention has been described with reference to a preferred embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, the technical features mentioned in the embodiments can be combined in any way as long as there is no structural conflict. It is intended that the invention not be limited to the particular embodiments disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.

Claims (10)

1. The converter is characterized by comprising a cabinet body; wherein, the first and the second end of the pipe are connected with each other,
one side of the front bottom layer of the cabinet body is provided with a reactor, and a power module electrically connected with the reactor is arranged above the reactor;
the top of the cabinet body is provided with the air intake, the bottom of the cabinet body is provided with the air outlet, the position department that is close to the air intake in the cabinet body is provided with the fan.
2. The converter according to claim 1, wherein a direct current fuse is arranged on the other side of the front bottom layer of the cabinet body, and a direct current isolation switch and an alternating current frame breaker are arranged in parallel on the back bottom layer of the cabinet body; the alternating current frame breaker is electrically connected with the reactor.
The direct current fuse is electrically connected with the direct current isolating switch.
3. The converter according to claim 2, wherein a DC capacitor battery is disposed on an upper layer of a back surface of the cabinet body and located on a back surface of the power module, and the DC capacitor battery is electrically connected with the power module.
4. The converter according to claim 2 or 3, wherein an AC electromagnetic interference filter and a DC electromagnetic interference filter are arranged in the cabinet body.
5. The converter according to claim 4, wherein the AC EMI filter comprises an AC magnetic ring and an AC filter plate, the AC filter plate is located on the upper layer of the back surface of the cabinet body, the AC magnetic ring is located on the back surface of the cabinet body near the bottom, and the AC magnetic ring, the AC filter plate and the AC frame circuit breaker are electrically connected in sequence;
the direct current electromagnetic interference filter comprises a direct current magnetic ring and a direct current filter plate, the direct current magnetic ring is located at the position, close to the top, of the bottom layer of the front face of the cabinet body, the direct current filter plate is located on the side face of the direct current fuse, and the direct current magnetic ring, the direct current filter plate and the direct current isolation switch are electrically connected in sequence.
6. The converter according to any of claims 1 to 3, wherein the fan comprises a main fan, a first auxiliary fan and a second auxiliary fan; wherein the content of the first and second substances,
the main fan and the first auxiliary fan are arranged adjacently and are positioned on the front face of the cabinet body close to the air inlet;
the second auxiliary fan is located at the position, close to the air inlet, of the back face of the cabinet body.
7. The converter according to any one of claims 1 to 3, wherein a heat exchanger is provided on the cabinet for dissipating heat from the components inside the cabinet.
8. The converter of claim 7, wherein the fan comprises a main fan, an outer circulating fan, and an inner circulating fan; wherein the content of the first and second substances,
the main fan is positioned on the front side of the cabinet body and close to the air inlet;
the external circulation fan sucks cold air from the outside, enters the heat exchanger and blows hot air in the heat exchanger to the outside;
and the internal circulation fan blows cold air in the heat exchanger into the cabinet body and realizes air circulation in the cabinet body.
9. The converter of claim 8, wherein the inner recycle fan comprises a first inner recycle fan and a second inner recycle fan; wherein, the first and the second end of the pipe are connected with each other,
the first internal circulation fan is connected with the heat exchanger and is positioned at the position of the side surface of the cabinet body close to the top, and the second internal circulation fan is positioned at the bottom of the cabinet body.
10. The converter according to claim 7, wherein the heat exchanger is disposed outside a rear door of the cabinet.
CN202211338046.5A 2022-10-28 2022-10-28 Current transformer Pending CN115604958A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202211338046.5A CN115604958A (en) 2022-10-28 2022-10-28 Current transformer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202211338046.5A CN115604958A (en) 2022-10-28 2022-10-28 Current transformer

Publications (1)

Publication Number Publication Date
CN115604958A true CN115604958A (en) 2023-01-13

Family

ID=84851286

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202211338046.5A Pending CN115604958A (en) 2022-10-28 2022-10-28 Current transformer

Country Status (1)

Country Link
CN (1) CN115604958A (en)

Similar Documents

Publication Publication Date Title
CN209358435U (en) A kind of compact SVG power cell
CN206774951U (en) A kind of radiating ring main unit certainly
CN210502319U (en) Direct current fills electric pile
CN204741656U (en) Active power filter ventilation cooling structure
CN214189343U (en) Heat radiation structure for charging pile
CN101702572A (en) Half-bridge power unit for wind-powered electricity generation
CN111431074A (en) Heat dissipation device of power distribution cabinet
CN109494992B (en) Frequency converter
CN115604958A (en) Current transformer
CN212695896U (en) Energy storage converter case
CN210608899U (en) Converter power unit
CN113889887A (en) Heat dissipation method for transformer room of box-type substation
CN208955744U (en) A kind of radiator of uninterruptible power supply
CN206060557U (en) A kind of water-cooling frequency converter inversion module structure
CN206759319U (en) A kind of water cooling power module
CN213339996U (en) Energy-saving and environment-friendly transformer
CN205720602U (en) A kind of high-power test platform cabinet body structure
CN218216767U (en) Power supply redundancy system for micro water quality monitoring station
CN218275738U (en) UPS uninterrupted power source
CN218769016U (en) High temperature structure is prevented to transformer
CN218896685U (en) Standard module heat radiation structure
CN205543150U (en) Cooling fin structure of battery module
CN218829169U (en) Three-in-one mobile energy storage power supply
CN212543134U (en) Solar heat dissipation device of power metering box
CN220234242U (en) Heat abstractor of dc-to-ac converter subassembly

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination