CN103680843B - Silicon steel wire iron core transformer capable of removing eddy current - Google Patents
Silicon steel wire iron core transformer capable of removing eddy current Download PDFInfo
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- CN103680843B CN103680843B CN201310641292.2A CN201310641292A CN103680843B CN 103680843 B CN103680843 B CN 103680843B CN 201310641292 A CN201310641292 A CN 201310641292A CN 103680843 B CN103680843 B CN 103680843B
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Abstract
The invention relates to a transformer capable of improving transformer eddy current loss and discloses a silicon steel wire iron core transformer capable of effectively removing eddy current. The amorphous alloy iron core transformer comprises a coil framework wound with a coil winding, an iron core inserted into the coil framework, and a steel plate support used for mounting and supporting of all voltage transformation elements, the iron core is an E-shaped iron core formed by splicing of silicon steel wires, the axis portion of the coil framework is hollow, a protruding portion of the iron core is inserted into the hollow portion of the coil framework, an aluminum sheet is embedded on the outer side of the steel plate support, and an eddy current opening is arranged at an area, perpendicular to leakage magnetic flux, of the side face of the steel plate support. The silicon steel wire iron core transformer solves the problem that existing transformers are serious in eddy current loss and can remove eddy current loss of a conductive shell and the iron core simultaneously.
Description
Technical field
The present invention relates to a kind of device improving transformer eddy-current loss, especially one kind eliminate simultaneously can external conductive casing and
The silicon steel silk appendiron core transformer of iron core vortex loss.
Background technology
Coil outside a conductor, and allow coil be passed through alternating current, then coil just produces alternating magnetic field.By
Conductor in the middle of the coil circumferencial direction be can equivalent become a circle circle closed circuit, the magnetic flux in closed circuit is not
Break and change, therefore the circumferencial direction in conductor can produce induced electromotive force and induced-current, and sense of current is along conductor
Circumferencial direction is turn-taked, just as one circle circle whirlpool, this monoblock conductor occur electromagnetic induction and produce faradic
Phenomenon is referred to as vortex phenomenon.The outer perimeter of conductor is longer, and the frequency of alternating magnetic field is higher, is vortexed bigger, the whirlpool of conductor
Stream also can produce heat, if the resistivity of conductor is little, the vortex producing is very strong, and the heat of generation is just very big.
Due to there is the magnetic flux of alternation in transformer core, the therefore eddy current effect of generation can cause the vortex of transformer to damage
Consumption.The magnetic flux of alternation induced electromotive force in the windings, also induced electromotive force in the core simultaneously, excite from becoming back in core interior
The electric current on road, that is, be vortexed.Again because iron core has certain resistance, vortex flows through in the core, produces fuel factor, the energy causing
Amount loss is exactly eddy-current loss；The magnetic flux simultaneously overflowing from iron core, also can produce sensing to the conductor of surrounding, make conductor shape nearby
Become vortex, equally cause eddy-current loss.
The eddy-current loss producing for transformer core, often by magnetic core (iron core) many ferromagnetic conductor thin slice (such as silicon
Steel disc) it is formed by stacking, these sheet surfaces scribble the oxide of thin layer insulated paint or insulation.Magnetic flux passes through the stenosed section of thin slice
When, it is vortexed to be limited in and flows through along the narrow and small loop of some in each, the net electromotive force in these loops is less, the length in loop
Larger, thus can significantly reduce eddy-current loss.So, widely used stacked iron core in alternating current generator, electrical equipment.
For example【The patent No.】CN201220684817.1,【Title】A kind of transformer,【Notification number】CN203070898, public
Driven a kind of transformer, including silicon steel sheet circle, plastic stent, the first enamel-covered wire, the second enamel-covered wire, cover plate and be located at cover plate upper end
Input port and output port；Described plastic stent is located inside silicon steel sheet；Described first enamel-covered wire is arranged on plastic stent
Upper end, described second enamel-covered wire is arranged on the lower end of plastic stent；Before and after described silicon steel sheet circle, both sides are provided with bearing.This reality
With the new generation limiting vortex to a certain extent, but often by magnetic core (iron core) with many ferromagnetic conductor thin slices (for example
Silicon steel sheet) it is formed by stacking silicon steel sheet in the iron core of existing transformer, still cannot thoroughly solve iron core vortex loss problem,
The conditions such as cause is by producing, processing, install, mechanical strength are limited, and its thickness is between 0.25 to 0.6 millimeter, therefore still has relatively
Big vortex exists, and electric energy loss ratio is larger, does not meet the requirement of energy-conserving and environment-protective.
The eddy-current loss that the magnetic flux overflowing for transformer core causes, generally adopts the method iron core of electromagnetic shielding
Outside, coil windings are in interior mode.
For example【The patent No.】CN201120552385.4,【Title】The vortex that disappears minitype high voltage transformer,【Notification number】
CN202434311, discloses one kind and disappears vortex minitype high voltage transformer, including primary side bobbin, first side winding, once
Side winding input lead, secondary side eight groove skeleton, secondary side winding, secondary side winding output lead, secondary side line incrustation, U
Type ferrite magnetic core and insulating bushing, wherein, first side winding is wound on primary side bobbin, and secondary side winding is wound on secondary
On the groove skeleton of side eight.This disappear vortex minitype high voltage transformer can by most of flux shield in iron core, peripheral conductor be subject to less than
Big magnetic flux effect, but due to increased the magnetic flux of core interior, the vortex consume that iron core occurs is more serious.
For example【The patent No.】CN200420114240.6,【Title】A kind of low magnetic leakage low-reluctance transformer,【Notification number】
CN2754191, discloses a kind of low magnetic leakage low-reluctance transformer, and it is made up of iron core, skeleton, coil, is characterized in, coil is
It is wound on by primary coil on 1/2 secondary coil being wound on skeleton, another 1/2 secondary coil is wound on institute on primary coil
Constitute, iron core is to be passed around and constituted in coil outer by silicon steel sheet or silicon steel silk.The beneficial effects of the utility model are：Due to coil
The iron core of the silicon steel sheet being passed around or silicon steel silk composition surrounds, and primary coil and secondary coil is effectively shielded,
The magnetic resistance making transformer reduces, and magnetic flux increases, and loss reduces, and can reduce the electrical appliance generation electromagenetic wave radiation to periphery
Interference.But, similarly due to increased the magnetic flux of core interior, the vortex consume that iron core occurs is more serious.
The eddy-current loss of therefore existing transformer is still serious, is not suitable for high frequency power transformation, also cannot be severe
Normally use under electromagnetic environment.
Content of the invention
Present invention aim to address the serious problem of existing transformer eddy-current loss, there is provided one kind can eliminate simultaneously
Can external conductive casing and iron core vortex loss the vortex transformer that disappears.
Specifically, transformer of the present invention includes being wound with the coil rack of coil windings and inserts coil rack
Iron core, also includes the stainless steel strut for installing and supporting all transformation elements, and iron core passes through arm-tie by vertically or horizontally
It is fixed in stainless steel strut, described iron core is " E " the shape iron core being pieced together with silicon steel silk, coil rack axial portions hollow, iron
Protuberance insertion coil rack hollow part in the middle part of core, is inlaid with aluminium flake, stainless steel strut side and leakage field outside stainless steel strut
Logical vertical area is provided with vortex opening.
Further illustrating as the present invention, silicon wire cross-section be 2-5mm2, cross sectional shape be circular or square or
Polygon, the periphery of silicon steel silk sets insulating barrier, is bonded with high temperature resistant glue between silicon steel silk, and bonding spacing is 0.01-0.07mm.
Two pieces of " E " shape iron cores splice relatively, and are provided with " returning " shape insulating trip, the shape of insulating trip intermediate openings in stitching portion
It is mutually matched with the coil rack being wound with coil windings with size, coil rack runs through insulating trip；Prominent in the middle part of two pieces of iron cores
Go out portion to completely attach to, upper and lower two pairs of lug bosses are completely separated by insulating trip.
Coil rack is provided with the coil support portion of different radii, is wherein located at centre and radius maximum coil supporting part is
High-tension coil supporting part, for supporting high-tension coil winding, side is additionally provided with one or more low-voltage coil supporting parts, not collinear
The radius of circle supporting part successively decreases to both sides from the middle of coil rack.
Described arm-tie is either vertically or horizontally anchored on stainless steel strut, arm-tie be by two or more pieces of "【" shape
Sub- arm-tie combine, the end of every piece of sub- arm-tie is equipped with anchoring screwed hole, and side is provided with splicing screwed hole, sub- arm-tie
The arm-tie being combined into have one or more shape "【】" dead slot.
Described arm-tie is no excitation arm-tie, is all filled with 3M tree at the gap between the splicing screwed hole of arm-tie and sub- arm-tie
Fat glue.
It is equipped with insulating barrier, block board thickness is coil windings line between each high-tension coil winding and low-voltage coil winding
3-7 times of core diameter, the core surface of coil windings is all covered with dielectric film.
Vortex opening side two parallel reinforcing steel bars are installed, described reinforcing steel bar aluminium suitcase is wrapped up in, two ends with
Stainless steel strut prism welds.
The invention has the beneficial effects as follows：
1. the iron core of transformer of the present invention is put together using silicon steel silk, when magnetic flux passes through the stenosed section of silicon steel silk, whirlpool
Stream is limited in and flows through along the narrow and small loop of some in silicon steel silk, and the net electromotive force in these loops is less, and the length in loop is relatively
Greatly, eddy-current loss can thus be significantly reduced.
2. it is inlaid with aluminium flake outside the stainless steel strut of transformer of the present invention, the most of magnetic flux overflowing from iron core is shielded in
In the space that aluminium flake is surrounded, thus stainless steel strut is served with shielding protection effect, does not produce eddy current effect.
3. transformer of the present invention is provided with leakage magnetic flux vertical area in the very strong region stainless steel strut side of leakage field
Vortex opening, due to not having conductor at this, the magnetic flux of leakage can not produce eddy current effect because of ineffective object.
Brief description
Fig. 1 is the structural representation of transformer of the present invention.
Fig. 2 is the main transformation component structure schematic diagram of transformer.
Fig. 3 is the core structure schematic diagram of transformer.
Fig. 4 is the pulling plate structure schematic diagram of transformer.
Fig. 5 is the vortex opening ruggedized construction schematic diagram of transformer.
In figure, 1 stainless steel strut；2 aluminium flakes；3 iron cores；301 silicon steel silks；302 insulating barriers；4 insulating trips；
5 coil windings；501 high-tension coil windings；502 low-voltage coil windings；6 insulating barriers；7 vortex openings；8 draw
Plate；801 anchoring screwed holes；802 splicing screwed holes；803 dead slots；9 coil racks；901 low-voltage coil supporting parts；
902 high-tension coil supporting parts；10 reinforcing steel bars.
Specific embodiment
Below in conjunction with drawings and Examples, the present invention is described in further detail, the present embodiment is only that the present invention is made more
Clearly illustrate, rather than limitation of the present invention.
As shown in figure 1, the vortex transformer that disappears of the present invention, including the coil rack 9 being wound with coil windings 5 and insertion line
The iron core 3 of ring framework, also includes the stainless steel strut 1 for installing and supporting all transformation elements, and described iron core is to use silicon steel silk
" E " shape iron core that 301 piece together, it is horizontally fixed in stainless steel strut 1 by arm-tie 8, and magnetic flux passes through the narrow of silicon steel silk
During narrow section, it is vortexed to be limited in and flows through along the narrow and small loop of some in silicon steel silk, the net electromotive force in these loops is less, return
The length on road is larger, thus can significantly reduce eddy-current loss.
Coil rack 9 axial portions are hollow, protuberance insertion coil bone 9 hollow part at iron core 3 middle part, stainless steel strut
Outside is inlaid with aluminium flake 2, and the most of magnetic flux overflowing from iron core is shielded in the space that aluminium flake is surrounded, thus to steel plate
Support serves shielding protection effect.
Stainless steel strut side and leakage magnetic flux vertical area are provided with vortex opening 7, even if there being magnetic flux to expose, but do not have at this
Conductor, can not produce eddy current effect because of the ineffective object of magnetic flux.
Further illustrating as the present embodiment, as shown in Figure 2 and Figure 3, silicon steel silk 301 cross-sectional area is 2-5mm2, section
Generally circular in shape, the periphery of silicon steel silk sets insulating barrier 302, is bonded with high temperature resistant glue between silicon steel silk, and bonding spacing is 0.01-
0.07mm.The size of eddy-current loss and the variation pattern in magnetic field, the motion of conductor, the geometry of conductor, the magnetic conductivity of conductor
Relevant with factors such as electrical conductivity, if 1 square of iron is divided into 8,16,32...... block etc., get less, eddy current is got over
Little, power consumption is fewer.The silicon steel sheet thickness sold in the market is typically between 0.25 to 0.6mm, and silicon gauge of wire is then
In below 0.25mm, make permeability magnetic material with silicon steel sheet and still there are larger eddy-current loss, thus can be existed with cross section
6mm2Following silicon steel silk replaces silicon steel sheet as magnetic conduction material, thus reaching the purpose greatly reducing iron core vortex loss.
Further illustrating as the present embodiment, as shown in figure 1, two pieces of " E " shape iron cores 3 splice relatively, and in stitching portion
It is provided with " returning " shape insulating trip 4, the shapes and sizes of insulating trip intermediate openings are mutual with the coil rack 9 being wound with coil windings 5
Coupling, coil rack runs through insulating trip；Protuberance in the middle part of two pieces of iron cores completely attaches to, and upper and lower two pairs of lug bosses are complete by insulating trip
Entirely separate.So most of magnetic flux can be limited in iron core, reduce magnetic flux and reveal.
Further illustrating as the present embodiment, as shown in Fig. 2 coil rack 9 is provided with the coil support of different radii
Portion, is wherein located at centre and radius maximum coil supporting part is that high-tension coil supporting part 902 is used for supporting high-tension coil winding, other
While being additionally provided with one or more low-voltage coil supporting parts 901, the radius of different coil support portion is from the middle of coil rack to both sides
Successively decrease.Thus symmetrically it is divided into multigroup using alternating expression winding, leakage field group, magnetic leakage flux significantly reduces, electromagnetic force reduces.Pole
The earth improves anti-short circuit capability.
Further illustrating as the present embodiment, as shown in figure 4, arm-tie 8 is either vertically or horizontally anchored at stainless steel strut 1
On, arm-tie be by two or more pieces of "【" shape sub- arm-tie combination, the end of every piece of sub- arm-tie is equipped with anchoring screw thread
Hole 801, side is provided with splicing screwed hole 802, the arm-tie being combined into of sub- arm-tie have one or more "【】" shape dead slot 803.
“【】" shape dead slot functionally can be used as demagnetization groove, a large amount of vortex concentration reducing within arm-ties are it is not necessary to process centre
Groove, decreases machining period.When can greatly save milling cutter consumption, reduces cost, and avoid arm-tie due to milling groove
Be heated moderate finite deformation that is uneven and leading to.The pulling plate structure of the present invention is essentially identical with traditional structure, can rise receiver body
When hanging, untanking mass and winding thrust, meet the requirement of mechanical strength.
Further illustrating as the present embodiment, as shown in figure 4, arm-tie 8 is no excitation arm-tie, the splicing screwed hole of arm-tie
All it is filled with 3M resin glue at gap between 802 and sub- arm-tie.
Further illustrating as the present embodiment, as shown in Fig. 2 each high-tension coil winding 501 and low-voltage coil winding
It is equipped with insulating barrier 6, block board thickness is 3-7 times of coil windings wire core diameter, and the core surface of coil windings is equal between 502
It is coated with dielectric film.
Further illustrating as the present embodiment, as shown in figure 5, the side of vortex opening is provided with two parallel reinforcings
Steel bar 10, reinforces steel bar aluminium suitcase and wraps up in, two ends are welded with stainless steel strut prism, strengthen the Stability Analysis of Structures of transformer further
Property, meet the requirement of mechanical strength.
Claims (6)
1. one kind can silicon steel wire iron core transformer capable of removing eddy current, including the coil rack (9) being wound with coil windings (5) and insertion
The iron core (3) of coil rack, also include for install and support all transformation elements stainless steel strut (1) it is characterised in that：Institute
Stating iron core (3) is " E " the shape iron core being pieced together using silicon steel silk (301), and it is vertically or horizontally fixed by arm-tie (8)
In stainless steel strut (1)；Described coil rack (9) axial portions are hollow, the protuberance insertion coil rack in the middle part of iron core (3)
(9) hollow part；It is inlaid with aluminium flake (2), side and leakage magnetic flux vertical area are provided with vortex opening outside described stainless steel strut (1)
(7)；Wherein, two pieces of " E " shape iron cores (3) are spliced relatively, and are provided with " returning " shape insulating trip (4) in stitching portion, open in the middle part of insulating trip
The shapes and sizes of mouth are mutually matched with the coil rack (9) being wound with coil windings (5), and coil rack runs through insulating trip；Institute
State the protuberance in the middle part of two pieces of iron cores to completely attach to, upper and lower two pairs of lug bosses are completely separated by insulating trip.
2. transformer according to claim 1 it is characterised in that：Described silicon steel silk (301) cross-sectional area is 2-5mm2, cut
Face is generally circular in shape or square or polygon, and the periphery of silicon steel silk sets insulating barrier (302), is glued with high temperature resistant glue between silicon steel silk
Close, bonding spacing is 0.01-0.07mm.
3. transformer according to claim 1 it is characterised in that：Described coil rack (9) is provided with the line of different radii
Circle supporting part, is wherein located at centre and radius maximum coil supporting part is high-tension coil supporting part (902), side is additionally provided with one
Or multiple low-voltage coil supporting part (901), the radius of different coil support portion successively decreases to both sides from the middle of coil rack.
4. transformer according to claim 1 it is characterised in that：Described arm-tie (8) is either vertically or horizontally anchored at
On stainless steel strut (1), arm-tie be by two or more pieces of "【" the sub- arm-tie of shape combines, the end of every piece of sub- arm-tie
Be equipped with anchoring screwed hole (801), side is provided with splicing screwed hole (802), the arm-tie being combined into of sub- arm-tie have one or
Multiple "【】" shape dead slot (803).
5. transformer according to claim 4 it is characterised in that：Described arm-tie (8) is no excitation arm-tie, the spelling of arm-tie
Connect and be all filled with 3M resin glue at the gap between screwed hole (802) and sub- arm-tie.
6. transformer according to claim 1 it is characterised in that：Each high-tension coil winding (501) and low-voltage coil around
It is equipped with insulating barrier (6), block board thickness is 3-7 times of coil windings wire core diameter, the core of coil windings between group (502)
Surface is all covered with dielectric film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310641292.2A CN103680843B (en) | 2013-12-03 | 2013-12-03 | Silicon steel wire iron core transformer capable of removing eddy current |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310641292.2A CN103680843B (en) | 2013-12-03 | 2013-12-03 | Silicon steel wire iron core transformer capable of removing eddy current |
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| Publication Number | Publication Date |
|---|---|
| CN103680843A CN103680843A (en) | 2014-03-26 |
| CN103680843B true CN103680843B (en) | 2017-02-15 |
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| CN201310641292.2A Expired - Fee Related CN103680843B (en) | 2013-12-03 | 2013-12-03 | Silicon steel wire iron core transformer capable of removing eddy current |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104592698A (en) * | 2015-01-14 | 2015-05-06 | 安徽亚海电子有限公司 | High-frequency switching mode power supply transformer |
| CN107275055A (en) * | 2017-05-12 | 2017-10-20 | 中科电力装备集团有限公司 | A kind of transformer iron-core structure |
| CN112119472A (en) * | 2019-08-22 | 2020-12-22 | 深圳市大疆创新科技有限公司 | Iron core, electronic device and electronic apparatus |
| CN110556959B (en) * | 2019-09-29 | 2021-09-10 | 长江勘测规划设计研究有限责任公司 | Electromagnetic shielding structure of giant water turbine generator in strong electromagnetic environment |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202049854U (en) * | 2011-04-28 | 2011-11-23 | 南京国电环保设备有限公司 | High-power high-frequency high-tension rectifier transformer |
| CN202977127U (en) * | 2012-11-14 | 2013-06-05 | 海宁联丰东进电子有限公司 | LED TV (Light Emitting Diode Television) transformer capable of reducing eddy current loss |
| CN103377800A (en) * | 2012-04-14 | 2013-10-30 | 扬州丰登精密机械有限公司 | Heat-dissipating transformer |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0472527B1 (en) * | 1989-05-19 | 1994-03-16 | Siemens Aktiengesellschaft | Valve choke, especially for high-voltage dc transmission systems |
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2013
- 2013-12-03 CN CN201310641292.2A patent/CN103680843B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202049854U (en) * | 2011-04-28 | 2011-11-23 | 南京国电环保设备有限公司 | High-power high-frequency high-tension rectifier transformer |
| CN103377800A (en) * | 2012-04-14 | 2013-10-30 | 扬州丰登精密机械有限公司 | Heat-dissipating transformer |
| CN202977127U (en) * | 2012-11-14 | 2013-06-05 | 海宁联丰东进电子有限公司 | LED TV (Light Emitting Diode Television) transformer capable of reducing eddy current loss |
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| CN103680843A (en) | 2014-03-26 |
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Inventor after: Yin Jiayun Inventor before: Huang Lei |
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Effective date of registration: 20161202 Address after: 523290, Dongguan, Guangdong, Shijie Town, Liu village, 184 east science and technology plant, property on the third floor Applicant after: Dongguan Taipu Amperex Technology Limited Address before: Garden City District of Liuzhou City, 545006 New Road No. 7 the Guangxi Zhuang Autonomous Region Guangxi No. 21 1-9 Applicant before: LIUZHOU WUHUAN WATER HEATING EQUIPMENT BUSINESS DEPARTMENT |
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