CN207490767U - A kind of frequency converter - Google Patents
A kind of frequency converter Download PDFInfo
- Publication number
- CN207490767U CN207490767U CN201721280440.2U CN201721280440U CN207490767U CN 207490767 U CN207490767 U CN 207490767U CN 201721280440 U CN201721280440 U CN 201721280440U CN 207490767 U CN207490767 U CN 207490767U
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- China
- Prior art keywords
- reactor
- frequency converter
- utility
- loop
- model
- 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.)
- Expired - Fee Related
Links
- 238000001816 cooling Methods 0.000 claims abstract description 14
- 230000009466 transformation Effects 0.000 claims abstract description 8
- 230000005855 radiation Effects 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 238000009434 installation Methods 0.000 abstract description 3
- 238000004804 winding Methods 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 230000017525 heat dissipation Effects 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- WBLJAACUUGHPMU-UHFFFAOYSA-N copper platinum Chemical compound [Cu].[Pt] WBLJAACUUGHPMU-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 229910000976 Electrical steel Inorganic materials 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
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- Inverter Devices (AREA)
Abstract
The utility model provides a kind of frequency converter, including housing, frequency transformation device, reactor and cooling fan are installed in housing, cooling fan is set to one end in housing, DC loop is provided in frequency converter, the anode series winding reactor of DC loop, reactor is resisted by several standard direct currents to be composed in parallel, after employing frequency converter provided by the utility model, the whole physical size smaller of reactor, installation is lighter, conducive to product high-volume and standardized production, it is also beneficial to production with material supply to prepare, is easy to implement lean production.
Description
Technical field
The utility model is related to electric control appliance field, more specifically to a kind of frequency converter with reactor.
Background technology
Frequency converter (Variable-frequency Drive, VFD) is using converter technique and microelectric technique, by changing
Become motor working power Frequency Patterns to control the electric control appliance of ac motor, main circuit is generally including direct current
Road and alternating current circuit, the power frequency supply of external input 380V/50Hz are rectified into DC voltage, and then inversion is frequency through three-phase bridge
The variable alternating voltage of rate.In commutating circuit, the waveform of input current is irregular rectangular wave, and waveform presses fourier series
Fundamental wave and each harmonic are decomposed into, overtone order is usually 6n ± 1 time higher hamonic wave, and higher hamonic wave therein supplies exogenous disturbances
Electric system.
Generally, relatively large effect on power system is not apparent to capacity for harmonics of inverter；It is and small to capacity
Electric system, with regard to very important, it is also a kind of pollution to utility network for the interference that harmonics of inverter generates, and harmonics of inverter is dirty
Dye is serious to the harm of electric system, is mainly manifested in the following aspects：
(1) harmonics of inverter reduces power equipment service life；
(2) harmonics of inverter influences each electric elements normal work；
(3) other harm of harmonics of inverter.
In the design for inhibiting harmonic wave in the frequency conversion series of products of power electronics switch technology at present, reactor is connected on whole
By as the means most generally used in a frequency conversion electric loop, frequency converter can be reduced due to reducing reactor individual amount
Cost, therefore the method that each manufacturer is usually chosen in current-limiting reactor in DC loop in recent years, and wherein in DC loop
Anode on the use that single direct current resists of connecting it is particularly extensive.
Because DC loop current is larger, traditional single direct current reactor is because for the need for meeting electrical current-carrying and safety
Often there is certain physical section product and larger volume, such reactance is increased heat-resisting usually using fine copper platinum, silicon steel sheet
Coiling is isolated in insulating paper, this just makes it have larger volume and also brings higher cost of manufacture, meanwhile, larger volume can make
The copper platinum heat dissipation of reactance winding innermost layer is difficult.
Utility model content
The main purpose solution of the utility model is connected on the direct current reactor on the anode of DC loop in the prior art
The technical issues of physical size is larger, and heat dissipation is difficult.
In order to solve the above technical problems, the utility model provides a kind of frequency converter, including housing, pacify in the housing
Equipped with frequency transformation device, reactor and cooling fan, the cooling fan is set to one end in the housing, the frequency converter
DC loop is inside provided with, the anode series winding reactor of the DC loop, the reactor is by more than two standards
Direct current reactance composes in parallel.
Optionally, the reactor is series on the anode and/or cathode of the DC loop.
Optionally, the reactor is located at one end corresponding to the cooling fan, the frequency transformation in the housing
Device is installed between the reactor and the cooling fan.
After employing frequency converter provided by the utility model, the utility model is mainly by by several standard direct currents
It is whole again after anti-parallel connection to connect on DC loop anode, make the whole physical size smaller of reactor, installation is lighter, saves
The manufacture cost of frequency converter.
Description of the drawings
Attached drawing is to be used to provide a further understanding of the present invention, and a part for constitution instruction, and following
Specific embodiment together for explaining the utility model, but should not form the limitation of the utility model, in the accompanying drawings：
Fig. 1 is the structure diagram of the utility model embodiment frequency converter；
Fig. 2 is the structure diagram of the utility model embodiment reactor；
Specific embodiment
Specific embodiment of the present utility model is described in detail below in conjunction with attached drawing.It should be understood that herein
Described specific embodiment is only used for describing and explaining the present invention, and is not meant to limit the utility model.
As shown in Figure 1 and Figure 2, the utility model provides a kind of frequency converter 100, including housing 110, is installed in housing 110
There are frequency transformation device 120, reactor 130 and cooling fan 140, cooling fan 140 is set to one end in housing 110, frequency conversion
DC loop is provided in device 110, reactor 130 of contacting on DC loop, reactor 130 is by more than two standard direct currents
Anti- 131 compose in parallel, wherein, reactor is series on the anode and/or cathode of the DC loop.
After employing frequency converter provided by the utility model, the utility model is mainly by by several standard direct currents
It is whole again after anti-parallel connection to connect on DC loop anode, make the whole physical size smaller of reactor, installation is lighter, saves
Manufacture cost, in addition, in the prior art frequency converter in the different capacity intersegmental direct current reactor that need to design different capacity size,
It needs to manufacture according to different type of machines or purchases the different direct current reactor of watt level, in the utility model, system can be passed through
It makes the way resisted using more standard direct currents in parallel and obtains different inductance values and corresponding different current capacity.
As shown in Figure 1, reactor 130 is located at one end corresponding to cooling fan 140, frequency transformation device in housing 110
120 are installed between reactor 130 and cooling fan 140, due to the whole physical size smaller of reactor, the sky of heat dissipation wind channel
Between bigger, frequency transformation device is installed between reactor and cooling fan, the heat dissipation effect of entire frequency converter can be made more
Good, so as to accomplish the more compact structure of separate unit frequency converter, the heat dissipation of inductance is more excellent, organization of production is easier.
The embodiment of the utility model is explained in detail, but the utility model is not limited to be retouched above in association with attached drawing
The embodiment stated.For a person skilled in the art, it is right in the case where not departing from the utility model principle and spirit
These embodiments carry out a variety of modifications, replacement and modification, still fall in the scope of protection of the utility model.
Claims (3)
1. a kind of frequency converter including housing, is equipped with frequency transformation device, reactor and cooling fan in the housing, described
Cooling fan is set to one end in the housing, and DC loop is provided in the frequency converter, is connected in the DC loop
The reactor, which is characterized in that the reactor is resisted by more than two standard direct currents to be composed in parallel.
2. frequency converter according to claim 1, which is characterized in that the reactor is series at the anode of the DC loop
And/or on cathode.
3. frequency converter according to claim 1, which is characterized in that the reactor is located at the radiation air in the housing
One end corresponding to machine, the frequency transformation device are installed between the reactor and the cooling fan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721280440.2U CN207490767U (en) | 2017-09-30 | 2017-09-30 | A kind of frequency converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721280440.2U CN207490767U (en) | 2017-09-30 | 2017-09-30 | A kind of frequency converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207490767U true CN207490767U (en) | 2018-06-12 |
Family
ID=62479413
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721280440.2U Expired - Fee Related CN207490767U (en) | 2017-09-30 | 2017-09-30 | A kind of frequency converter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207490767U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107517009A (en) * | 2017-09-30 | 2017-12-26 | 深圳弘远电气有限公司 | A kind of frequency converter |
-
2017
- 2017-09-30 CN CN201721280440.2U patent/CN207490767U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107517009A (en) * | 2017-09-30 | 2017-12-26 | 深圳弘远电气有限公司 | A kind of frequency converter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180612 |