CN207199448U - A kind of structure for induced power part - Google Patents
A kind of structure for induced power part Download PDFInfo
- Publication number
- CN207199448U CN207199448U CN201720417158.8U CN201720417158U CN207199448U CN 207199448 U CN207199448 U CN 207199448U CN 201720417158 U CN201720417158 U CN 201720417158U CN 207199448 U CN207199448 U CN 207199448U
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- China
- Prior art keywords
- power part
- induced power
- framework
- winding
- structure according
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- 238000004804 winding Methods 0.000 claims abstract description 28
- 239000011162 core material Substances 0.000 claims abstract description 23
- 230000005294 ferromagnetic effect Effects 0.000 claims abstract description 9
- 238000009413 insulation Methods 0.000 claims abstract description 5
- 238000001816 cooling Methods 0.000 claims description 24
- 230000005291 magnetic effect Effects 0.000 claims description 17
- 239000007788 liquid Substances 0.000 claims description 15
- 239000000463 material Substances 0.000 claims description 6
- 238000012546 transfer Methods 0.000 claims description 2
- 239000003302 ferromagnetic material Substances 0.000 description 9
- 238000009499 grossing Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 6
- 239000000306 component Substances 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000008358 core component Substances 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000000110 cooling liquid Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000009969 flowable effect Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 235000011837 pasties Nutrition 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F37/00—Fixed inductances not covered by group H01F17/00
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/02—Casings
- H01F27/025—Constructional details relating to cooling
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/08—Cooling; Ventilating
- H01F27/10—Liquid cooling
- H01F27/16—Water cooling
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/24—Magnetic cores
- H01F27/255—Magnetic cores made from particles
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F17/00—Fixed inductances of the signal type
- H01F17/04—Fixed inductances of the signal type with magnetic core
- H01F2017/048—Fixed inductances of the signal type with magnetic core with encapsulating core, e.g. made of resin and magnetic powder
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Inverter Devices (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
A kind of structure for induced power part, the induced power part includes at least one insulation winding, and the winding is located at lower portion, and the framework is filled by ferromagnetic core material, the ferromagnetic core material is generally about winding so that only external electrical connections are outwards visible.
Description
Technical field
It is an object of the invention to provide a kind of structure for induced power part.
Background technology
The General development trend of the power electronic devices of such as frequency converter is the increase of power density.Due to electric power
Internal loss in all parts, a condition for increasing power density is to utilize effective cooling means, such as liquid
Air cooling is forced in cooling.
The smoothing choke for being used to limit current harmonics in frequency converter is the typical of the sizable power attenuation of generation
Power component.Choke is following this sensing part, and most of power attenuation occurs in electric current in this sensing part
Conduct in winding, and it is also very notable in ferromagnetic core segments.
Sense the core components typically standardization of part and with high-volume production.Therefore, when designing filter for new opplication
During ripple choke, normal mode be selected from the catalogue of manufacturer suitable core and design around core it is specific around
Group.From the perspective of cooling, for example, due to winding insertion interior circle and the irregular outer shape due to entity, this structure
Make typically very difficult.The known method for cooling down high-power winding is for example, being made using the internal copper pipe with recirculated water
High-power winding is made, or is embedded in the good band of heat conduction between winding turns and is cooled down by some external device (ED)s described
The outer end of band.
It is known to be used to arrange that the solution of effectively cooling (such as liquid cooling) is suitable for induced power part
Complicated and expensive, generally include some technology restrictions.When attempting to optimize magnetic Circuit Design, the shape of commercially available core components also may be used
It can be construed as limiting.
The content of the invention
The invention provides a kind of new power inductor structure, the shortcomings which obviating known technology, and from cooling
Angle and magnetic Circuit Design angle allow structure optimization.Present invention also offers a kind of new method for manufacturing new sensor structure.
Protection domain limits in the preferred embodiment in independent claim and dependent claim.
Essential characteristic according to the sensor structure of the present invention is the electromagnetic component of inductor, i.e., winding and magnetic core are positioned at all
In the framework of box-like metal shell, wherein insulation winding structure is formed the ferromagnetic material encirclement of the magnetic core of inductor.Core
Magnetic property can be optimized by adjusting the shape of core, such as by using extra non-magnetic part or making in rectangular frame
With the framework specially designed.
Manufacturing method according to the invention comprises the following steps：
1. by inner body assembling in framework,
2. winding is assembled in framework,
3. the fluid filling framework of ferromagnetic material is used,
4. the hardening ferromagnetic material.
It can be cooled down according to the inductor of the present invention by liquid circulation and/or forced-air circulation.In liquid cooling
Embodiment in, entity can include the pipeline of lower portion and be used to pipeline is connected into outside liquid followed in outer surface
The connector of ring.In another embodiment, fluid pipeline is integrated in frame structure.Forcing air cooled embodiment
In, the outer surface of framework includes cooling fins, and heat is delivered to cooled external air from the fin.In certain embodiments, feel
Device is answered to be cooled down by both liquid circulation and forced-air circulation.
According to the sensor structure mechanically robust of the present invention, the cooling of sensor structure can be arranged effectively.Can root
Optimize the magnetic property of inductor according to needing that magnetic core is formed.
Brief description of the drawings
The present invention is explained in greater detail below by using the embodiment of refer to the attached drawing, wherein
Fig. 1 shows the main circuit of transducer driver,
Fig. 2 shows the sensor structure of prior art,
Fig. 3 shows the sensor structure according to the present invention,
Fig. 4 A show the part of the sensor structure according to the present invention,
Fig. 4 B show the cross section of the sensor structure according to the present invention,
Fig. 5 shows manufacturing method according to the invention flow chart,
Fig. 6 A and 6B show the cross section of the framework according to the present invention.
Embodiment
Fig. 1 shows known and typical variable speed motor drive simplification master map, wherein being controlled using frequency converter
The rotating speed of the axle of AC motor processed.Frequency converter FC in this example includes diode bridge rectifier REC, and it is by three phase mains
Voltage L1, L2And L3Rectification is by capacitor CDCThe Constant Direct Current chain voltage of filtering, in addition to three-phase inverter unit INU, it is described
Three-phase inverter unit INU is made up of IGBT switches and fly-wheel diode, for producing the supply motor M adjustable output of three-phase
Voltage U, V, W.Sensing part is generally used for the either side of rectifier, to filter the harmonic wave of power supply phase current.Motor drives
Device can also include the rectangular window containing induced power element, such as the so-called LCL filtering of the master in regenerative drive
Device and the sinusoidal filter in motor side.Although following example only shows DC filtering choke as shown in Figure 1, according to
The structure of the sensing part of the present invention can be used in the inductor applications of all these types and in transformer.
Fig. 2 shows sensing part LDC, the known structure as the smoothing choke used in big-power transducer shows
Example.The electromagnetic component of choke is arranged on the top of liquid cooling substrate 24, and the liquid cooling substrate can pass through connector 25
It is connected to outside liquid cooling circulation.Choke includes magnetic core 22, and the magnetic core has the intermediolateral column 23 that winding 21 is wound about
(electrical connection of winding is not shown).In order to strengthen the cooling of winding, some are used as from winding 21 to the heat conductor of cooling base 24
Metal band 26 be positioned between winding circle.
Such as due to being imitated from the top edge of winding to the hot path of the length of cooling piece, the cooling of this prior art construction
Fruit is undesirable.The structure is not mechanically firm, and (such as in ship) may need extra branch under vibration
Support part part.
Fig. 3 shows the sensing part L of the example as the smoothing choke according to the present inventionDC1.The winding peace of choke
Inside framework 31 so that only electrical connector 33 is outwards visible.Framework is filled by firm ferromagnetic material 32, the ferromagnetic material
Material is entirely around the winding.
Liquid cooling arrangement in, as shown in Fig. 3 and Fig. 4 example, for liquid circulation pipeline core material it
Between be located at lower portion so that only outside liquid connector 34 be visible.
Cross-sectional views of Fig. 4 A-4B as change, the internal structure and manufacture for showing Fig. 3 sensing part are conceived.
In Figure 4 A, how liquid cooling pipe 35 shown in phantom can be positioned at the example in framework 31, i.e. at top
The rear wall of the close framework in place, and close to the antetheca of the framework at bottom.Insulation winding bag W is then such as block arrow institute
Show and fall into framework and between tubes.
Fig. 4 B show the winding (not having insulating part) in framework 31.Advantageously by with low magnetic conductivity and low fax
Guide 36 made of the material of conductance is used to winding bag being positioned at desired position.
Fig. 5 shows the flow chart of manufacturing method according to the invention.In the first step, have an impact to the shape of magnetic core
And/or all parts influential on winding position, and possible cooling-part is all assembled into lower portion.Next,
Insulation winding coating is arranged on its final position, and framework is filled by ferromagnetic packing material 32, in this stage, ferromagnetic filling
Material 32 is flowable, for example, as pasty state or damp sand.After filling, ferromagnetic material passes through heat hardening；That is, pass through by
Inductor in heating chamber be generally held at the temperature needed for ferromagnetic material property and keep needed for ferromagnetic material property when
Between.
Final result after heating is compact sensor structure, and wherein ferromagnetic material forms the magnetic core of inductor.Core
Form can optimize, such as by the way that non iron guide is placed in framework before filling.Can also be by using difference
The frame shape of rectangular prism shown in above-mentioned example optimizes core shapes, for example, use tool as shown in Figure 6B
There is the box of fillet.
Fig. 6 A and 6B show the example of the shape of cross section of the wall of the optional framework according to the present invention.
Fig. 6 A show the cross section of frame wall 61, wherein the pipeline 62 for cooling liquid circulation is integrated in frame structure
In.
Fig. 6 B show the cross section of air cooling frame wall 63, and air cooling frame wall 63 includes extraneous air stream can be with
The outside cooling fins 64 guided therebetween.Fig. 6 B embodiment also includes inner fins 65, and inner fins 65 are improved from magnetic core
To the heat transfer of framework.Because inner fins are exposed to the magnetic flux of magnetic core well, inner fins can be used for producing
Controlled power attenuation, so as to the possible resonance decayed in high frequency.Can also be by properly selecting frame material (example
Such as, aluminium is about being decayed well at 1kHz, graphite is decayed well at higher than 100kHz frequencies) influence the decay of resonance.
Embodiments of the invention described above only provide in an illustrative manner.It will be appreciated by persons skilled in the art that this is not being departed from
The many modifications that can be carried out in the case of the scope of invention, variations and alternatives.Although used in the example of foregoing description
DC smoothing chokes of frequency converter, but present invention could apply in many other applications, for example, in AC smoothing chokes, just
In string smoothing choke, power transformer etc..The claim of the present invention is intended to covering and fallen within the spirit and scope of the present invention
All such modifications, change and replacement.
Claims (7)
1. a kind of structure for induced power part, the induced power part includes at least one insulation winding,
Characterized in that, winding is located at lower portion, the framework is filled by ferromagnetic core material, the ferromagnetic core material surround around
Group so that the external electrical connections of only winding are outwards visible.
2. the structure according to claim 1 for induced power part, it is characterised in that：
The winding is positioned at by using guide in framework, and the guide is by the conduction of low magnetic and the material of low electrical conduction
It is made.
3. the structure according to claim 1 or 2 for induced power part, it is characterised in that：For liquid circulation
Pipeline is embedded into the ferromagnetic core material.
4. the structure according to claim 1 or 2 for induced power part, it is characterised in that：For liquid circulation
Pipeline is integrated into the framework.
5. the structure according to claim 1 for induced power part, it is characterised in that：The framework includes being used for sky
The outside fin of air cooling.
6. the structure according to claim 1 for induced power part, it is characterised in that：The framework includes internal wing
Piece, for improving from the ferromagnetic core material to the heat transfer of the framework and/or for producing power damage with predetermined frequency
Consumption.
7. the structure according to claim 1 for induced power part, it is characterised in that：
The induced power part is used to be filtered the principal current harmonic wave in frequency converter or motor current harmonic wave.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DKPA201600256 | 2016-04-28 | ||
| DKPA201600256 | 2016-04-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207199448U true CN207199448U (en) | 2018-04-06 |
Family
ID=58693453
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720417158.8U Active CN207199448U (en) | 2016-04-28 | 2017-04-19 | A kind of structure for induced power part |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN207199448U (en) |
| DE (1) | DE202017101659U1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3940729B1 (en) * | 2020-07-16 | 2023-10-25 | Mitsubishi Electric R & D Centre Europe B.V. | A magnetic core with an integrated liquid cooling channel and a method to make the same |
-
2017
- 2017-03-22 DE DE202017101659.5U patent/DE202017101659U1/en active Active
- 2017-04-19 CN CN201720417158.8U patent/CN207199448U/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| DE202017101659U1 (en) | 2017-04-19 |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |