CN207993637U - A kind of cast foil winding reducing eddy-current loss - Google Patents
A kind of cast foil winding reducing eddy-current loss Download PDFInfo
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- CN207993637U CN207993637U CN201820569823.XU CN201820569823U CN207993637U CN 207993637 U CN207993637 U CN 207993637U CN 201820569823 U CN201820569823 U CN 201820569823U CN 207993637 U CN207993637 U CN 207993637U
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- aluminium foil
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- 239000011888 foil Substances 0.000 title claims abstract description 105
- 238000004804 winding Methods 0.000 title claims abstract description 56
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 162
- 229910052802 copper Inorganic materials 0.000 claims abstract description 155
- 239000005030 aluminium foil Substances 0.000 claims abstract description 93
- 239000011889 copper foil Substances 0.000 claims abstract description 88
- 239000010949 copper Substances 0.000 claims abstract description 73
- 230000011218 segmentation Effects 0.000 claims abstract description 13
- 239000003822 epoxy resin Substances 0.000 claims abstract description 10
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 10
- 239000000203 mixture Substances 0.000 claims abstract description 7
- 238000009413 insulation Methods 0.000 claims abstract description 6
- 238000005266 casting Methods 0.000 claims abstract description 5
- 239000011521 glass Substances 0.000 claims abstract description 5
- 238000007598 dipping method Methods 0.000 claims abstract description 3
- 230000017525 heat dissipation Effects 0.000 claims abstract description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 57
- 229910052782 aluminium Inorganic materials 0.000 claims description 57
- 239000004411 aluminium Substances 0.000 claims description 56
- 239000010410 layer Substances 0.000 claims description 40
- 125000006850 spacer group Chemical group 0.000 claims description 15
- 238000000605 extraction Methods 0.000 claims description 5
- 238000003466 welding Methods 0.000 claims description 5
- 239000011229 interlayer Substances 0.000 claims description 3
- 230000007423 decrease Effects 0.000 abstract description 2
- 230000005291 magnetic effect Effects 0.000 description 7
- 239000004020 conductor Substances 0.000 description 6
- 238000009826 distribution Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- JITOKQVGRJSHHA-UHFFFAOYSA-M monosodium methyl arsenate Chemical compound [Na+].C[As](O)([O-])=O JITOKQVGRJSHHA-UHFFFAOYSA-M 0.000 description 3
- 238000002955 isolation Methods 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003302 ferromagnetic material Substances 0.000 description 1
- 206010022000 influenza Diseases 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Coils Of Transformers For General Uses (AREA)
Abstract
The utility model discloses a kind of cast foil windings reducing eddy-current loss, which is characterized in that cast foil winding includes copper/aluminium foil component, two pieces draws copper bar, layer insulation, inner and outer surfaces place the glass cross panel of pre- epoxy resin dipping, casting epoxy resin mixture and heat dissipation air flue；The copper/aluminium foil component is repeatedly formed in parallel around in parallel or two sections or more segmentation copper/aluminium foils by two or more copper/aluminium foils.Segmented version and around mode include two sections individual and it is wound, two sections of two stackings are simultaneously wound, and three sections of two stackings are simultaneously wound, and three sections of three stackings are simultaneously wound.When using two sections individual and account for around, eddy-current loss than whole coiling of percentage of resistance loss and reduce half.When using two sections of two stackings and around than whole coiling of percentage that eddy-current loss accounts for resistance loss is reduced to a quarter.The added losses of power transformer product are greatly reduced, total load loss is reduced, winding temperature rise also decreases, and extends product service life.
Description
Technical field
The utility model is related to the manufactures of transformer, and in particular to a kind of cast foil winding reducing eddy-current loss.
Background technology
According to the law of electromagnetic induction, the conductor (including ferromagnetic material) in alternating magnetic field, the phase of the magnetic line of force and conductor
To cutting, induced electromotive force will be induced on the section perpendicular to magnetic line of force direction, and form the ring current of closure, road
Diameter is often just like the whirlpool in water, because being referred to herein as vortexed.Running transformer winding electromagnetic wire is in alternating magnetic field, around
Vortex is there is in group.
Because there is the presence of vortex, the electric current that conductor flows through, in addition to running current and its resistance of generation damage
Consumption is outer, and vortex similarly makes conductor temp.-elevating generate energy loss, is called eddy-current loss.
The size of eddy-current loss and the variation pattern in magnetic field, the geometry of conductor, the magnetic conductivity of conductor and conductivity etc.
Factor is related.
The transformer low voltage winding of the low pressure winding of transformer, especially epoxy casting, typically with whole copper（Aluminium）Foil
Coiling forms foil winding, copper（Aluminium）The height of foil is identical as winding reactance height, and eddy-current loss is larger.When using aluminium foil coiling
When winding, under the technical conditions that identical height and same resistance are lost, the sectional area of aluminium foil increases than the sectional area of copper foil
To 1.6 times or so, this means that the thickness of aluminium foil will increase to 1.6 times or so, and eddy-current loss is especially prominent.
Foil winding eddy-current loss accounts for the percentage of resistance loss and 1.2 power direct proportionalities of foil thickness, with
Section direct proportionality perpendicular to magnetic line of force direction, with foil height direct proportionality.In the low-voltage foil type of transformer
In winding, eddy-current loss accounts for the percentage of resistance loss for medium-small type distribution transformers, usually in a few percent to percent
Between more than ten, for relatively large distribution transformer, eddy-current loss accounting example increases sharply, maximum up to the percent of resistance loss
50.This added losses for resulting in entire power transformer product increases, and total load loss is caused to increase, and the Wen Sheng of winding is also therewith
Increase, coil accelerates insulation ag(e)ing, or even burns out low pressure winding.
So that the loss of product total load is reached numerical requirements as defined in technical performance, there is certain difficulty, or not
It obtains and does not increase foil sectional area, increase entire small product size, virtually increase the manufacturing cost of product.
Therefore, it is necessary to which eddy-current loss control is reduced to minimum degree.
Utility model content
The purpose of the utility model is to overcome the problems of the prior art, by it is a kind of based on two sections individual and around around
Scheme processed, be extended to new-type two or more copper/aluminium foils change the one kind being formed in parallel around in parallel or two sections or more segmentation copper/aluminium foils can
Reduce the cast foil winding of eddy-current loss.
Technical solutions of the utility model it：
A kind of cast foil winding reducing eddy-current loss, cast foil winding include copper/aluminium foil component, and two pieces is drawn
Copper bar, layer insulation, inner and outer surfaces place the glass cross panel of pre- epoxy resin dipping, casting epoxy resin mixture and dissipate
Hot gas road；The copper/aluminium foil component it is repeatedly in parallel around in parallel or two sections or more segmentation copper/aluminium foils by two or more copper/aluminium foils and
At.
Further, the copper/aluminium foil component is repeatedly around parallel-connection structure by two or three copper/aluminium foils repeatedly around being formed in parallel：
One is constituted by two or three thin copper/aluminium foils and is similar to thick copper/aluminium foil structure, by two or three separated copper/aluminium
Foil stacks togather, and one layer of thin spacer layer, the copper/aluminium for preventing adjacent two thin are placed between adjacent two thin copper/aluminium foils
It is contacted again between foil, but the head and tail head that rises between each thin copper/aluminium foil is the welding that connects together respectively.
Repeatedly such as around mode in parallel：One, which is constituted, by two or more thin copper/aluminium foils is similar to thick copper/aluminium foil structure,
Two or more separated copper/aluminium foils are stacked togather, one layer of thin spacer layer is placed between adjacent two thin copper/aluminium foils, are prevented
It is only contacted again between adjacent two thin copper/aluminium foils, but the head and tail head that rises between each thin copper/aluminium foil is to be connected in one respectively
Play welding, structure is exactly repeatedly around parallel-connection structure, including two repeatedly around in parallel, three branch circuit parallel connections or multiple branch circuit parallel connection.
Further, the copper/aluminium foil component is in parallel by segmentation copper/aluminium foil and around into and being that will change around parallel connection around structure
It is similar to thick copper/aluminium foil afterwards and is separated into two sections or more, two sections or more wind simultaneously side by side, and two sections or more start is drawn by one
Go out copper bar to link together, two sections or more of tail head is linked together by another extraction copper bar.
Further, the segmented version of the copper/aluminium foil component and around mode include two sections individual and it is wound, two sections two repeatedly
It puts and wound, three sections of two stackings are simultaneously wound, and three sections of three stackings are simultaneously wound.
Further, when for two sections individual and it is wound when, by two copper/aluminium foils and around forming, thickness is identical, and width is foil
Formula coil reactance height mono- Ban Minus remove 5~10mm, upper and lower position arranged in parallel.
Further, when for two sections of two stackings and it is wound when, be coiled by four thin copper/aluminium foils, every two thin copper/aluminium
Foil correspondence stacks togather, and one layer of thin spacer layer is placed between two thin copper/aluminium foils that two pairs of correspondences stack togather, and is formed arranged side by side
Arrangement, constitute two and two repeatedly structure, the thickness of every copper/aluminium foil is the half for always needing thickness, the width of every copper/aluminium foil
It is that foil winding reactance height mono- Ban Minus remove 5~10mm.
Further, when for three sections of two stackings and it is wound when, it is coiled by six thin copper/aluminium foils, every two thin
Copper/aluminium foil correspondence stacks togather, and one layer of thin spacer layer, shape are placed between two thin copper/aluminium foils that three pairs of correspondences stack togather
At arranged in parallel, three and two repeatedly structures are constituted, the thickness of every copper/aluminium foil is the half for always needing thickness, every copper/aluminium foil
Width be that San/mono- Minus of foil winding reactance height remove 2x5~10mm.
Further, when for three sections of three stackings and it is wound when, it is thin by every three in nine thin copper/aluminium foils
Copper/aluminium foil correspondence stacks togather, and each interlayer between the corresponding three thin copper/aluminium foils stacked togather places one layer of thin isolation
Layer, formed arranged in parallel, constitute three and three repeatedly structure, the thickness of every copper/aluminium foil is the one third for always needing thickness, often
The width for opening copper/aluminium foil is that San/mono- Minus of foil winding reactance height remove 2x5~10mm.
Further, when copper/aluminium foil component thickness and width are more than certain numerical value, if resolving into several sections and/or dried layer
Thinner copper/aluminium foil sub-component composition and around and/or repeatedly around.
The utility model when using two sections individual and around scheme coiling, the percentage that eddy-current loss accounts for resistance loss is comparable
Whole coiling reduces half.When using two sections of two stackings and around scheme coiling, eddy-current loss accounts for the percentage of resistance loss
It is reduced to a quarter than whole coiling.The added losses of power transformer product are greatly reduced, total load loss, winding are reduced
Wen Sheng also decrease, extend product service life.
Description of the drawings
Fig. 1 is a kind of cast foil winding sectional view reducing eddy-current loss of the utility model.
Fig. 2 is a kind of cast foil winding vertical view reducing eddy-current loss of the utility model.
Fig. 3 be a kind of cast foil winding two reducing eddy-current loss of the utility model open stacking and it is wound when position
Set arrangement figure.
Fig. 4 be the utility model it is a kind of reduce eddy-current loss cast two sections of foil winding individual and it is wound when position
Arrangement figure.
Fig. 5 be a kind of two sections of two stackings of the cast foil winding reducing eddy-current loss of the utility model and it is wound when
Position arrangement figure.
Fig. 6 be a kind of three sections of two stackings of the cast foil winding reducing eddy-current loss of the utility model and it is wound when
Position arrangement figure.
Fig. 7 be a kind of three sections of three stackings of the cast foil winding reducing eddy-current loss of the utility model and it is wound when
Position arrangement figure.
Fig. 8 is that a kind of cast foil winding reducing eddy-current loss of the utility model is wound schematic diagram.
In figure：Copper（Aluminium）Foil component 1, extraction copper bar 2-1,2-2, layer insulation 3, glass cross panel 4, epoxy resin are mixed
Material 5 is closed, radiate air flue 6, separation layer 7, copper（Aluminium）Foil 11 and 12, copper（Aluminium）Foil 21,22,23,24, copper（Aluminium）Foil 31,32,33,
34,35,36, copper（Aluminium）Foil 41,42,43,44,45,46,47,48,49.
Specific implementation mode
The utility model can be with the utility model will be further described, however, this practicality by the following examples
Novel range is not limited to following embodiments.
Embodiment 1：
A kind of cast foil winding reducing eddy-current loss, copper（Aluminium）Foil component 1 is by two or three copper（Aluminium）Foil changes
Around in parallel or segmentation copper（Aluminium）Foil is formed in parallel, and by extraction copper bar 2-1,2-2, layer insulation 3, inner and outer surfaces, which are placed, to be presoaked
The glass cross panel 4 of epoxy resin, casting epoxy resin mixture 5 form heat dissipation air flue 6 and form.
The copper（Aluminium）Foil component 1 is by two or three copper（Aluminium）Foil, should be in two or three copper repeatedly around being formed in parallel
（Aluminium）One layer of thin spacer layer 7 is placed between foil, sees Fig. 3, Fig. 5, Fig. 6, Fig. 7.
Repeatedly around mode in parallel：Two or three copper/aluminium foils are repeatedly around being formed in parallel：By two or three thin copper/aluminium foils
Constitute a thick copper/aluminium foil.Such as：1 millimeters thick（As the left sides Fig. 3 thickness+the right is thick）It is designed to that 0.5 millimeter two is opened（Such as figure below
The right and left）, or be divided into 0.33 millimeter three and open, separated copper/aluminium foil is stacked togather again, between place one layer of thin spacer layer,
It prevents from contacting again after separating, but by the separated welding that connects together of starting, separated tail head is also the welding that connects together,
This is just formed：（1）It is exactly two branch circuit parallel connections to be divided into two（As figure below left side open with the right two to be formed it is in parallel）；（2）It is divided into three
What is opened is exactly three branch circuit parallel connections.
The copper（Aluminium）Foil component 1 is by segmentation copper（Aluminium）Foil is formed in parallel, and refers to two sections or more and around and two sections or more
It starts and is linked together by drawing copper bar 2-1, two sections or more of tail head is linked together by drawing copper bar 2-2.
On the basis of the above, and whole copper/aluminium foil upper and lower two sections are separated into, this two sections, side by side simultaneously around other, are just cried simultaneously
Around.Also two sections of parallel connections are cried.
The copper（Aluminium）Foil component 1 is by segmentation copper（Aluminium）Foil is formed in parallel, and has several segmented versions and around such as two sections of lists
It opens and wound, two sections of two stackings are simultaneously wound, and three sections of two stackings are simultaneously wound, and three sections of three stackings are simultaneously wound etc..
The copper（Aluminium）Foil component 1 is by segmentation copper（Aluminium）Foil is formed in parallel, when for two sections individual and it is wound when, it is by 2
Open copper（Aluminium）Foil 11 and 12 and around composition, thickness is identical, and width is that one half Minus of foil winding reactance height remove 5~10mm,
Upper and lower position arranged in parallel, is shown in Fig. 4.
The copper（Aluminium）Foil component 1 is by segmentation copper（Aluminium）Foil is formed in parallel, when for two sections of two stackings and it is wound when, it is
By 4 thinner copper（Aluminium）Foil 21,22,23,24 is coiled into, copper（Aluminium）Foil 21 is stacked togather with 22, copper（Aluminium）Foil 23 and 24 repeatedly exists
Together, and in copper（Aluminium）Between foil 21 and 22, copper（Aluminium）One layer of thin spacer layer 7, then arranged in parallel are placed between foil 23 and 24,
Constitute two and two repeatedly structure, every copper（Aluminium）The thickness of foil is the half for always needing thickness, every copper（Aluminium）The width of foil is
Foil winding reactance height mono- Ban Minus remove 5~10mm, see Fig. 5.
The copper（Aluminium）Foil component 1 is by segmentation copper（Aluminium）Foil is formed in parallel, when for three sections of two stackings and it is wound when, it is
By 6 thinner copper（Aluminium）Foil 31,32,33,34,35,36 is coiled into, copper（Aluminium）Foil 31 is stacked togather with 32, copper（Aluminium）Foil 33 with
34 stack togather, copper（Aluminium）Foil 35 is stacked togather with 36, and in copper（Aluminium）Between foil 31 and 22, copper（Aluminium）Between foil 33 and 34,
Copper（Aluminium）Place one layer of thin spacer layer 7 between foil 35 and 36, then arranged in parallel constitutes three and two repeatedly structures, every copper（Aluminium）
The thickness of foil is the half for always needing thickness, every copper（Aluminium）The width of foil is that San/mono- Minus of foil winding reactance height are gone
2x5~10mm is shown in Fig. 6.
The copper（Aluminium）Foil component 1 is by segmentation copper（Aluminium）Foil is formed in parallel, when for three sections of three stackings and it is wound when, it is
By 9 thinner copper（Aluminium）Foil 41,42,43,44,45,46,47,48,49 is coiled into, copper（Aluminium）Foil 41,42 is stacked togather with 43,
Copper（Aluminium）Foil 44,45 is stacked togather with 46, copper（Aluminium）Foil 47,48 is stacked togather with 49, and in copper（Aluminium）Foil 41 and 42 and 42 with
Between 43, copper（Aluminium）Between foil 44 and 45 and 45 and 46, copper（Aluminium）One layer of thin spacer layer is placed between foil 47 and 48 and 48 and 49
7, then arranged in parallel, constitute three and three repeatedly structures, every copper（Aluminium）The thickness of foil is the one third for always needing thickness, every
Copper（Aluminium）The width of foil is that San/mono- Minus of foil winding reactance height remove 2x5~10mm, sees Fig. 7.
The rest may be inferred, works as copper（Aluminium）When foil thickness and width is more than certain numerical value, if several sections and dried layer can be resolved into
Thinner copper（Aluminium）Foil form and around with repeatedly around.
A kind of manufacturing method for the cast foil winding reducing eddy-current loss, is now divided into four thinner copper/aluminium foils
Two section two repeatedly and for, statement two and two repeatedly structure manufacturing method, first 4 thinner copper（Aluminium）Foil 21,22,23,24
（See Fig. 5）Arrangement, which is welded on, draws copper bar 2-1（See Fig. 1）On, 4 can be respectively welded at the both sides for drawing copper bar 2-1, and fixed
On winding former（See Fig. 8）, between 21 and 22, one layer of thin spacer layer 7 is placed between 23 and 24, is wound.
Air flue mould stay is placed when around the half of total number of turns, until around complete total number of turns, cuts the thin spacer layer of interlayer
7,4 thinner copper（Aluminium）The tail end of foil 21,22,23,24, which is welded on, draws copper bar 2-2（See Fig. 1）On, and protect isolation
Layer does not damage, and erects foil winding, installs external mold, carries out poured with epoxy resin, after solidification, order removes air flue mould stay, collated
Just the cast foil winding of eddy-current loss can be reduced by being made.
Embodiment 2：
The dry-type distribution transformer of one 10-0.4KV2500KVA, low pressure winding set 2 air flues, with whole 2.1 ×
800mm copper foil coilings, eddy-current loss account for resistance loss 14.73%；Copper foil is opened with 1.05 × 800mm two to change coiling, eddy-current loss accounts for
Resistance loss 6.4%；Copper foil coiling arranged side by side is opened with 2.1 × 395mm two, eddy-current loss accounts for resistance loss 7.2%；With 1.05 × 395
Mm tetra- opens the repeatedly coiling of copper foil two and two, and eddy-current loss accounts for resistance loss 3.2%.It can be seen that eddy-current loss accounts for the hundred of resistance loss
Score makes width reduce with the reduction of copper thickness, the increase of segments, and eddy-current loss is obviously reduced.
Embodiment 3：
The dry-type distribution transformer of one 10-0.4KV2500KVA, low pressure winding set 1 air flue, with whole 4 × 1140mm
Aluminium foil coiling, eddy-current loss account for resistance loss 50.5%；Aluminium foil is opened with 2 × 1140mm two to change coiling, eddy-current loss accounts for resistance loss
22%；Aluminium foil coiling arranged side by side is opened with 4 × 565mm two, eddy-current loss accounts for resistance loss 25%；Aluminium foil two is opened with 2 × 565 mm tetra- simultaneously
Two repeatedly coilings, eddy-current loss account for resistance loss 10.9%.It can be seen that using aluminium foil coiling, although eddy-current loss accounts for resistance loss
Percentage, be obviously reduced with the reduction of aluminum foil thickness, the increase of segments.But aluminium foil coiling is damaged than the vortex of copper foil
It consumes much bigger.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, it is same
It can be applicable on oil-immersed transformer or other transformers, it is made within the spirit and principle of the present invention any to repair
Change, equivalent replacement and improvement etc., should be included within the scope of protection of this utility model.
Claims (9)
1. a kind of cast foil winding reducing eddy-current loss, which is characterized in that cast foil winding includes copper/aluminium foil group
Part, two pieces draw copper bar, layer insulation, and inner and outer surfaces place the glass cross panel of pre- epoxy resin dipping, casting epoxy resin
Mixture and heat dissipation air flue；The copper/aluminium foil component by two or more copper/aluminium foils repeatedly around in parallel or two sections or more segmentation copper/
Aluminium foil is formed in parallel.
2. a kind of cast foil winding reducing eddy-current loss according to claim 1, which is characterized in that the copper/
Aluminium foil component is changed by two or three copper/aluminium foils around being formed in parallel, and is around parallel-connection structure repeatedly：By two or three thin copper/aluminium
Foil constitutes one and is similar to thick copper/aluminium foil structure, two or three separated copper/aluminium foils is stacked togather, adjacent two
One layer of thin spacer layer is placed between thin copper/aluminium foil, is contacted again between the copper/aluminium foil for preventing adjacent two thin, but each thin
The head and tail head that rises between copper/aluminium foil is the welding that connects together respectively.
3. a kind of cast foil winding reducing eddy-current loss according to claim 2, which is characterized in that the copper/
Aluminium foil component is in parallel by segmentation copper/aluminium foil and around into and being that will change to be similar to thick copper/aluminium foil after parallel connection and be separated into around structure
Two sections or more, two sections or more wind simultaneously side by side, and two sections or more start by one extraction copper bar link together, two sections with
On tail head linked together by another extraction copper bar.
4. a kind of cast foil winding reducing eddy-current loss according to claim 3, which is characterized in that the copper/
The segmented version of aluminium foil component and around mode include two sections individual and it is wound, two sections of two stackings are simultaneously wound, three sections of two stackings
And it is wound, three sections of three stackings are simultaneously wound.
5. a kind of cast foil winding reducing eddy-current loss according to claim 4, which is characterized in that when being two sections
Individual and it is wound when, by two copper/aluminium foils and around forming, thickness is identical, and width is one half Minus of foil winding reactance height
Remove 5~10mm, upper and lower position arranged in parallel.
6. a kind of cast foil winding reducing eddy-current loss according to claim 4, which is characterized in that when being two sections
Two stackings and it is wound when, be coiled by four thin copper/aluminium foils, every two thin copper/aluminium foil correspondence stacks togather, two pairs of correspondences
Between the two thin copper/aluminium foils stacked togather place one layer of thin spacer layer, formed arranged in parallel, constitute two and two repeatedly structure,
The thickness of its every copper/aluminium foil is the half for always needing thickness, and the width of every copper/aluminium foil is the one of foil winding reactance height
Ban Minus remove 5~10mm.
7. a kind of cast foil winding reducing eddy-current loss according to claim 4, which is characterized in that when being three sections
Two stackings and it is wound when, it is coiled by six thin copper/aluminium foils, and every two thin copper/aluminium foil correspondence stacks togather, three pairs
One layer of thin spacer layer is placed between the corresponding two thin copper/aluminium foils stacked togather, forms arranged in parallel, three and two is constituted and repeatedly ties
The thickness of structure, every copper/aluminium foil is the half for always needing thickness, and the width of every copper/aluminium foil is foil winding reactance height
San/mono- Minus remove 2x5~10mm.
8. a kind of cast foil winding reducing eddy-current loss according to claim 4, which is characterized in that when being three sections
Three stackings and it is wound when, be to be stacked togather by every three thin copper in nine thin copper/aluminium foils/aluminium foil correspondence, correspondence changes
Each interlayer between three thin copper/aluminium foils together places one layer of thin spacer layer, forms arranged in parallel, constitutes three and three
The thickness of repeatedly structure, every copper/aluminium foil is the one third for always needing thickness, and the width of every copper/aluminium foil is foil winding
San/mono- Minus of reactance height remove 2x5~10mm.
9. a kind of cast foil winding reducing eddy-current loss according to claim 1, which is characterized in that when copper/aluminium
When foil component thickness and width are more than certain numerical value, if resolving into several sections and/or the thinner copper/aluminium foil sub-component composition of dried layer
And around and/or repeatedly around.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820569823.XU CN207993637U (en) | 2018-04-20 | 2018-04-20 | A kind of cast foil winding reducing eddy-current loss |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820569823.XU CN207993637U (en) | 2018-04-20 | 2018-04-20 | A kind of cast foil winding reducing eddy-current loss |
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| Publication Number | Publication Date |
|---|---|
| CN207993637U true CN207993637U (en) | 2018-10-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820569823.XU Expired - Fee Related CN207993637U (en) | 2018-04-20 | 2018-04-20 | A kind of cast foil winding reducing eddy-current loss |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108597801A (en) * | 2018-04-20 | 2018-09-28 | 江西特种变压器厂 | A kind of cast foil winding reducing eddy-current loss and its manufacturing method |
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2018
- 2018-04-20 CN CN201820569823.XU patent/CN207993637U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108597801A (en) * | 2018-04-20 | 2018-09-28 | 江西特种变压器厂 | A kind of cast foil winding reducing eddy-current loss and its manufacturing method |
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