CN102792398A - Three-phase high performance dry-type transformer with epoxy- insulated coils and method for manufacturing of same - Google Patents
Three-phase high performance dry-type transformer with epoxy- insulated coils and method for manufacturing of same Download PDFInfo
- Publication number
- CN102792398A CN102792398A CN2011800149468A CN201180014946A CN102792398A CN 102792398 A CN102792398 A CN 102792398A CN 2011800149468 A CN2011800149468 A CN 2011800149468A CN 201180014946 A CN201180014946 A CN 201180014946A CN 102792398 A CN102792398 A CN 102792398A
- Authority
- CN
- China
- Prior art keywords
- coil
- core
- transformer
- core leg
- winding
- 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
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F30/00—Fixed transformers not covered by group H01F19/00
- H01F30/06—Fixed transformers not covered by group H01F19/00 characterised by the structure
- H01F30/12—Two-phase, three-phase or polyphase transformers
-
- 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
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/32—Insulating of coils, windings, or parts thereof
- H01F27/322—Insulating of coils, windings, or parts thereof the insulation forming channels for circulation of the fluid
-
- 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
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/32—Insulating of coils, windings, or parts thereof
- H01F27/327—Encapsulating or impregnating
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/04—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing coils
- H01F41/12—Insulating of windings
- H01F41/127—Encapsulating or impregnating
-
- 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
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/32—Insulating of coils, windings, or parts thereof
- H01F27/327—Encapsulating or impregnating
- H01F2027/328—Dry-type transformer with encapsulated foil winding, e.g. windings coaxially arranged on core legs with spacers for cooling and with three phases
-
- 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
- H01F27/25—Magnetic cores made from strips or ribbons
Abstract
The invention relates to a three-phase high performance dry- type transformer (10) with epoxy insulated coils (12, 14, 16) having a triangular core (20) formed by three core legs linked together by an upper yoke (18) and a lower yoke, each coil wound around its own core leg and provided with reinforcing fibres and cast resin. Furthermore it relates to a method for manufacturing same where a lower yoke is connected with core legs, each core leg is provided with a winding of copper wire, each winding is laminated with reinforcing fibres, rovings, or prepregs made thereof, in each winding a tube like body is fitted in order to form a channel for discharging heat losses during operation, and each coil is provided with cast resin. Each coil is then shifted on the respective core leg, the upper yoke is connected to the core legs, and the electrical installation of the conductors of each coil is finalized.
Description
Technical field
The present invention relates to have the three-phase high-performance dry-type transformer of the epoxy insulation coil that comprises the triangle core; Wherein said core is made up of three sub-cores; Each sub-core is arranged in the place, angle that becomes preferred 120 degree with other sub-core; And the long limit of each of long limit of each of each single-phase core and adjacent single-phase core forms core leg joint, and relates to the method that is used to make the three-phase high-performance dry-type transformer of mentioning before.
Background technology
The triangle core has been known since for a long time, and the wherein the oldest announcement time is recalled about 100 years or more of a specified duration.Three-phase high-performance transformer with triangle core also has been known since for a long time.
In GB 575564; Announced three-phase core; It comprises three v-components that formed also crooked leap strip width by the flux material layer that is bonded together through insulating material; The two ends of each member so are shaped and make they and other member end form banjo fixing butt jointing at mandrel, and three members are spent the direction radiation from mandrel in mutual displacement 120.The magnetic material bands can twine to form rectangular loop continuously, separates and the weld layer compressing tablet through plastic insulation material.Processed two V-arrangement cores at the top of coil and bottom with the oblique otch of 120 degree angle lappings, wherein so being shaped on the surface of each end makes three cores formation three-phase structure of can putting together, around three legs can placing winding on it.The surface that between the core component that extends between central shaft and the outward flange, forms banjo fixing butt jointing can be machined and then etching with deburring.Core component through collude in the bottom in the triangle member tape together, and through adjustable screw be connected the upper end be fixed in the triangle member.
Alternatively, each core component is divided at the center to prevent cross flux through the conduction band, with the laminate insulation, and is arranged in the plane of containing jack shaft.As other modification, the core component of star section has been described, make them with described those mode before being similar to, but part is wideer apart from band therebetween.Preformed coil can be placed at first and be cut (cut across the legs) on these legs and passing through on the core of banjo fixing butt jointing joint then, and perhaps the low pressure winding can be wrapped on the core, and the high pressure winding can slip over it.
In principle, mainly have two notions today, one is the Delta type, and this term is meant respective cross section, and another is the Hexaformer type.Two types of all commercializations, and can be used as liquid-cooled transformer and dry-type transformer.
Transformer core according to the Delta notion has three-dimensional iron core, and its structure is formed by three frame form's iron cores, and it has the identical size that the D-shape section for deflection provides.Iron core is made up of the magnetic conductance stripping.Comprise each other that with them (mutually include) 60 degree angles arrange three frame form's iron cores with the mode that forms three-dimensional iron core.
Transformer according to Hexaformer notion (WO2008/108704) is the three-phase transformer (being arranged to triangular shaped) with special shape core.Specifically, the hexaformer core comprises that at least one leg and at least one yoke part, the cross section routine of wherein said one or more legs are to have polygon more than four limits.
Usually, the lamination steel band that core is rolled up (for example 9 volume) by a certain quantity is formed, and the core leg has hexagonal shape of cross section, has obtained good electric and/or magnetic attribute thus.The transformer difference that makes up according to this notion is higher energy efficiency, lower weight and volume, lower vibrations and noise grade, lower electromagnetism stray magnetic field, lower surge current and does not have triple-frequency harmonics.
Compare conventional transformer, the triangle core transformer needs core still less to use steel, and has lower core loss.Therefore economically with ecology on useful.
In addition, compare the conventional art of the power transformer production that is involved in a large amount of hand labors, new technology allows automated production process largely.
From DE 2051883 B2, known usefulness is through uncured epoxy resin impregnated wire turn production, and twines transformer coil in the layer on the bobbin in the intermediate layer of the fiber winding with resin impregnation.Winding around scribbles insulating barrier, and epoxy resin is cured after accomplishing winding.At first, coil scribbles the primary insulation layer of the resin-impregnated-fiber layer that is preferably laminated glass etc., this layer is the glue form during winding process, has wherein deposited the lead that one deck at least has resin impregnation, next is coated with second resin-impregnated-fiber layer.Preferably, assembly forms the ring bodies of axial support.
With dry-type transformer with these characteristics, their coil arrangement becomes delegation usually, and wherein each coil is wrapped in around its own core leg, and promptly one with next adjacent, and the yoke of the iron core of each coil through the qualification transformer be linked together.
On the one hand, make easily according to the transformer of this traditional design, on the other hand, it is higher that the required space of this transformer is installed.And, compare the triangle core transformer, higher certainly for core with the demand of steel, and core loss is bigger.
Summary of the invention
Therefore, mention the transformer of type above the objective of the invention is to design, have, all relate to power and insulation stability, cause low manufacturing workload simultaneously than low spatial demand and efficient operation data.
This purpose realizes through a kind of three-phase high-performance dry-type transformer with the fibre-reinforced epoxy insulation coil that comprises the triangle core that is formed by three core legs that are positioned at place, triangle angle; Wherein the upper end of each core leg links together through upper magnet yoke; And the lower end of each core leg links together through lower yoke; Wherein each coil twines around its oneself core leg, and each coil has been equipped with fortifying fibre and casting resin.
According to preferred enforcement of the present invention, fortifying fibre is provided as glass fiber, aramid fiber, PET fiber, other polymer fiber, ceramic fibre or their combination.
According to further improvement of the present invention, fortifying fibre is provided as rove or prepreg.Rove is the length of drawing and narrow bundle fiber.Prepreg is the term of the synthetic fibers of " pre-soaked ".The form that these have fabric usually or weave cotton cloth, or unidirectional.They have comprised and have been used for a certain amount of basis material that they is bonded together and joins other element to during manufacture.The prepreg major part is stored in the cooled region, and this is to carry out through heating because activation is general main.Therefore, the composite structure major part of prepreg structure will need baker or autoclave to come curing materials.
Preferably; Transformer according to the present invention is characterized in that the winding with fortifying fibre and/or rove and/or each coil of prepreg lamination, wherein provides with fortifying fibre and/or rove and/or prepreg the reinforcement as the mechanical stability of coil of the lamination of winding.
According to another preferred embodiment of the present invention, each coil is equipped with the passage that is used for coolant, wherein said passage and mandrel parallel aligned.Preferably, at least three passages are provided in each coil.
And, maybe be advantageously, make coil have the cooling duct of different depth and adequately protect in order to avoid because the possible loss that causes by eddy current loss etc. and overheated so that provide.
According to preferred embodiment, each passage that is used for coolant in the coil is provided as the tubular body that when making coil, is assemblied in the winding according to transformer of the present invention.
Preferred embodiment according to transformer of the present invention is characterized in that: at least one yoke of each core segment, upper magnet yoke or lower yoke removably are connected to the respective core leg.Preferably, each yoke all is fabricated to rod, as a leg-of-mutton part, and the profile of these clavate triangularities wherein.
Advantageously, use according to transformer of the present invention, each core and yoke are all processed by the low-loss ferroalloy of crystallization or non-crystalline structure.And, the objective of the invention is the open method of described transformer before of how making.Thereby the method that is used to make according to transformer of the present invention comprises the different step that hereinafter is listed.
Start from locating the lower yoke that is connected with the core leg at the place, angle that is positioned at the triangle core.Then, each core leg is equipped with the winding of copper or aluminum steel or paper tinsel, wherein with fortifying fibre or rove or each winding of prepreg lamination of being processed by them.Next step is characterized in that: in each winding, assembling tubular body so that form is emitted on the passage that thermal losses that operating period generates provides.Now, when accomplishing winding, each coil is equipped with casting resin.
Subsequently, each coil of making according to step above-mentioned at respective core leg superior displacement, and be placed on upper magnet yoke on the core leg then and be connected to the core leg, wherein each coil stationary is in position.At last, carry out the electric installation of each coil-conductor.
Another method that is used to make according to transformer of the present invention comprises the different step that hereinafter is listed.
1) first step is the locating rectangle framework, and feasible two long limits that are parallel to any framework of each adjacent frame alignment form leg-of-mutton angle.The minor face of each framework forms upper magnet yoke and lower yoke.
2) then, with the winding of carrying out coil, wherein each core leg is used for reception the winding and a winding that is used for secondary voltage of primary voltage.
3) make coil according to this method in this locality, promptly each core leg stands independent winding process, and simultaneously on more than a core leg assembling be possible more than a winding.The winding of each coil mechanically or with manual type realizes through twining machine.
4), in each winding, assemble at least one tubular body so that respectively form and be emitted on the passage that thermal losses that transformer operating period generates provides according to preferred feature of the present invention.
5), check the position of each cooling duct according to the preferred steps of the method for the prescription that is used to make transformer.
6) and, coil according to the present invention be equipped with resin impregnation one deck at least, be preferably more than one deck fiber winding, so that obtain the mechanical stability of coil and the structure of support coils.
7) advantageously, resin can be a mylar, or according to a preferred embodiment of the invention, it is an epoxy resin.
8) and, advantageously, casting resin solidifies through the whole transformer of heat treatment, so that strengthen the mechanical stability of coil.
9) according to these further improvements in methods, the conductor of each coil is connected to interface.
10) last, about its electrical characteristic transformer according to the present invention is tested.
Dry-type transformer with these characteristics provides the design of flexible, reliable and environmentally safe, is used for except that the application that is the broad range the allocating task, and tolerable heavy load and extreme temperature.Their application that is designed to broad range provides safe and reliable transformer, meets most of global standards.Thereby these transformers can satisfy performance requirement, and the product that avoids safeguarding of nonflammable environmentally safe is provided simultaneously.
Transformer by the resin that strengthens with fibre glass roving, make them can stand extreme mechanical stress and load and material or any suitable fiber material of the very big intensity of short circuit active force are processed from thermal shock, the regular circulation of harsh weather.In addition, can be used for the enhancing of the prepreg realization coil of lamination winding through use.
Thereby, design and test these materials with running low as-60 ℃ (76 ℉) or above the external temperature of 50 ℃ (122 ℉).And, these transformers be explosion-proof, nontoxic, put out certainly, and be very moistureproof, do not receive the influence of freezing conditioned disjunction chemistry.
Special advantage is that the production of these transformers need not to use mold.On the contrary, their coil is made on the numerical control winding machine device, so they may be tailored to and satisfy definite client's specification and requirement, comprises loss, impedance or size.Specifically, it just in time is the transformer of suitable size that this design flexibility can be used for producing, and for example can need not to take apart it through limited discrepancy opening (access hatch) or gateway, perhaps in the zone of limited height, operates.Usually, these transformers are used in indoor and outdoors, and wherein shell can be used for being fit to most of global demands, and does not require vault or anti-overflow dike, water injector or other expensive fire prevention system.
Transformer according to the present invention can be used in variable frequency drives (VFD) and the traction application, wherein uses unexpected cyclic loading harmonic, and requires the solution of a plurality of windings.
Of the present invention these be the theme of dependent claims with other advantageous embodiment with improving.
Description of drawings
Through example at the various preferred embodiments of the present invention shown in the accompanying drawing of the present invention, will more detailed illustration and description advantageous embodiment of the present invention and improvement and special benefits of the present invention.It is presented at:
Fig. 1 is the top view that is equipped with on the sketch map of layout of triangle transformer core of coil and yoke;
Fig. 2 is the end view of the core framework that is made up of the closure circle;
Fig. 3 is the top view on the triangle core;
Fig. 4 is the end view of the triangle core that formed by three core frameworks, and wherein each long edge joint of each framework is incorporated into the long limit of adjacent frame, and is assembled on the triangle thus;
Fig. 5 is according to the top view on the triangle core that is equipped with winding of Fig. 3; And
Fig. 6 is the end view according to the triangle core that is equipped with winding of Fig. 4.
Embodiment
Fig. 1 shows the top view on the sketch map of layout of the triangularity depressor 10 that is equipped with coil 12,14,16 and yoke 18. Coil 12,14,16 respectively is wrapped in core leg (not shown in this view) on every side, and forms the three-phase high power transformer 10 with triangle core 20.
Yoke 18 is placed in the top of each core leg, and is connected to the top of each core leg, and it forms closed magnetic circuit thus.
In Fig. 2, show closure frame 22, to form by two long limits 24, each is connected to each other through arc linkage section 26.Grow the core leg 25 of limits 24 as coil 12,14,16 with long limit 24 adjacent each of adjacent frame 22, simultaneously arc linkage section 26 forms yokes 18.
Therefore, each core leg 25 of coil 12,14,16 is formed by two long limits 24 of two frameworks 22, and they are aligned together and form triangle thus, as appreciable from Fig. 3.
Fig. 3 shows the top view on the triangle core 20 that is formed by three closure frames 22, and wherein extend perpendicular to projection plane on the long limit 24 of each framework 22.At this place, leg-of-mutton angle, the adjacent said long limit 24 of two adjacent frame 22 is in alignment with each other, and the arc linkage section 26 of while at the end place on said long limit 24 forms yokes 18.
In Fig. 4, show the end view of triangle core 20, it is formed by three core frameworks 22, and wherein each long limit 24 of each framework 22 is connected to the long limit 24 of adjacent frame 22, and is assembled to the triangle core 20 according to transformer 10 of the present invention thus.As noted earlier, the long limit 24 of two alignment forms the core leg 25 of winding around its winding.
In Fig. 5, show according to the top view on the triangle core 20 of Fig. 3, it is equipped with winding base 28 and the winding 12,14,16 on it.
At last, Fig. 6 shows the end view according to the triangle core 20 of Fig. 4, and wherein each core leg 25 is equipped with winding base 28, and coil 12,14 has applied above that.The 3rd coil is hidden in the drawings.
Manufacturing as for this winding; When the triangle core is processed by closure frame 22; Promptly, the two ends of each core leg 25 make can not be at the coil that respective core leg 25 superior displacements easily twine the time when all being connected with triangle yoke 18; According to one embodiment of present invention, each core leg 25 is equipped with the cylindricality winding base 28 that is used to twine corresponding coil.
It is rather narrow this tubulose winding base 28 on the one hand, promptly it around corresponding core leg 25, and core leg 25 is enough big with the space between the winding base 28 on the other hand, makes to allow winding base 28 to rotate around core leg 25 with distance closely.Thereby the aluminium or the copper cash that provide for winding stably twine around the winding base of preferably being processed by the low-loss ferroalloy of crystallization or non-crystalline structure 28, and core leg 25 also is like this.
In order coil to be provided automatically or semi-automatically for respective core leg 25; Winding base 28 mechanically rotates by band transmission or chain transmission or gear drive etc.; These transmissions can removal after accomplishing winding process, wherein winding wire one circle, one circle and in layer reeling.Therefore, make and easily to carry out, need not to open the closure frame 22 of triangle core 20 in this locality of each core leg 25 place's coil.
When carrying out the winding of conductor, preferably in winding zone, be used to be emitted at least one pipe of each coil of the used heat of operating period with correct angle of circumference (right circular angle) and with the radius location of definition.Thereby these tubulose cooling pipes are fastened on the winding and before further continuing to make coil by fiber and/or by the prepreg that fiber is processed and press with for example epoxy resin layer.
Reference numerals list
10 triangularity depressors
12 coils
14 coils
16 coils
18 yokes
20 triangle cores
22 closure frames
24 long limits
25 core legs
26 arc linkage sections
28 winding bases.
Claims (15)
1. three-phase high-performance dry-type transformer (10) with the resin coil (12,14,16) that comprises the triangle core (20) that forms by three core legs (25); Each core leg is positioned at place, leg-of-mutton angle, and wherein the upper end of each core leg (25) links together through upper magnet yoke (18), and the lower end of each core leg links together through lower yoke (18); Each coil (12 wherein; 14,16) twine around core leg (25), and each coil (12; 14,16) fortifying fibre and casting resin have been equipped with.
2. three-phase high-performance dry-type transformer (10) with the resin coil (12,14,16) that comprises the triangle core (20) that forms by three closure frames (22); Each closure frame has two long limits (24), and each all is parallel to corresponding long limit (24) alignment of adjacent frame (22), and forms core leg (25) thus in each case; Each coil (12 wherein; 14,16) twine around a core leg (25), and each coil (12 wherein; 14,16) fortifying fibre and casting resin have been equipped with.
3. according to claim 1 or claim 2 transformer wherein provides said fortifying fibre as glass fiber, aramid fiber, PET fiber, other polymer fiber, ceramic fibre or their combination.
4. transformer as claimed in claim 3 wherein provides said fortifying fibre as rove.
5. according to any one of the preceding claims transformer, wherein said winding is processed by the fiber that has about hundreds of rice length, has a perimeter length of said coil at least.
6. according to any one of the preceding claims transformer is wherein with thermosetting resin or the said fortifying fibre of thermoplastic polymer's preimpregnation.
7. transformer as claimed in claim 6, wherein said thermosetting resin is an epoxy resin.
8. according to any one of the preceding claims transformer is wherein used the said winding of said fortifying fibre and/or rove and/or each coil of prepreg lamination (12,14,16).
9. transformer as claimed in claim 7, said fortifying fibre wherein is provided and/or with fortifying fibre and/or rove and/or prepreg to the reinforcement of the lamination of said winding as the mechanical stability of said coil (12,14,16).
10. according to any one of the preceding claims transformer, wherein each coil (12,14,16) is equipped with the passage that is used for coolant, and wherein said channel parallel is alignd in coil axes.
11. transformer as claimed in claim 10, each passage that is used for coolant in the wherein said coil (12,14,16) is provided as when making said coil, being assemblied in the tubular body of said winding.
12. transformer according to any one of the preceding claims, at least one in wherein said upper magnet yoke or the lower yoke (18) removably is connected to respective core leg (25).
13. transformer according to any one of the preceding claims, wherein each core and said yoke (18) are made by the low-loss ferroalloy of crystallization or non-crystalline structure.
14. be used to make the method for transformer according to any one of the preceding claims, wherein said core leg (25) is positioned at the place, angle of triangle core (20), and each core leg (25) is connected with upper magnet yoke (18) with lower yoke; Wherein each core leg (25) is equipped with the coil (12,14,16) of copper or aluminum steel or paper tinsel; Wherein with fortifying fibre or rove and/or each coil of prepreg lamination (12,14,16) of processing by them; Wherein in each coil (12,14,16); Assemble at least one tubular body so that form the passage be provided for being emitted on the thermal losses that operating period generates, wherein each coil (12,14; 16) be equipped with casting resin, and wherein accomplish the electric installation of the conductor of each coil.
15. the method that is used to make transformer as claimed in claim 14, wherein by lower yoke (18) and upper magnet yoke (18) assembling said triangle core (20), lower yoke (18) becomes whole Di to be connected with the core leg (25) at the place, angle of said triangle core (25); Wherein each core leg (25) is equipped with the coil (12 of copper or aluminum steel or paper tinsel; 14,16) each coil (12 of, wherein making according to step above-mentioned at respective core leg (25) superior displacement; 14; 16), wherein said upper magnet yoke (18) is connected to said core leg (25), and accomplishes the electric installation of the conductor of each coil.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP10002974.3 | 2010-03-20 | ||
| EP10002974A EP2367181A1 (en) | 2010-03-20 | 2010-03-20 | Three-phase high performance dry-type transformer with epoxy-insulated coils and method for manufacturing of same |
| PCT/EP2011/000436 WO2011116850A1 (en) | 2010-03-20 | 2011-02-01 | Three-phase high performance dry-type transformer with epoxy- insulated coils and method for manufacturing of same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102792398A true CN102792398A (en) | 2012-11-21 |
Family
ID=42352131
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011800149468A Pending CN102792398A (en) | 2010-03-20 | 2011-02-01 | Three-phase high performance dry-type transformer with epoxy- insulated coils and method for manufacturing of same |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP2367181A1 (en) |
| CN (1) | CN102792398A (en) |
| WO (1) | WO2011116850A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104103406A (en) * | 2014-07-29 | 2014-10-15 | 上海华力电控设备有限公司 | Three-phase dry-type transformed |
| CN104575994A (en) * | 2013-10-18 | 2015-04-29 | Abb技术有限公司 | Transformer |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013063242A1 (en) * | 2011-10-28 | 2013-05-02 | Abb Technology Ag | Integral mold for a transformer having a non-linear core |
| KR20140139616A (en) * | 2012-05-03 | 2014-12-05 | 에이비비 테크놀로지 리미티드 | Method, mold and system for manufacturing a transformer coil |
| WO2014098272A1 (en) * | 2012-12-17 | 2014-06-26 | Abb Technology Ltd | A transformer low voltage coil and a transformer thereof |
| WO2014133423A1 (en) * | 2013-02-26 | 2014-09-04 | Lennart Höglund | Transferring machine and three phase transformer core built with transferring machine |
| DE102014103526A1 (en) | 2014-03-14 | 2015-09-17 | Maschinenfabrik Reinhausen Gmbh | On-load tap-changer, tap-changer for voltage regulation and method for carrying out a changeover in the tapped transformer |
| SE1950225A1 (en) * | 2019-02-21 | 2020-08-22 | Kkm Kraftkvalitemaetning Ab | Air-core inductor |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2085554U (en) * | 1991-04-24 | 1991-09-25 | 北京科学技术开发交流中心 | Energy-saving drying type transformer and reactance |
| DE4029097A1 (en) * | 1990-09-13 | 1992-03-19 | Messwandler Bau Ag | Self-cooling three=phase dry type transformer - has core with triangular layout in gas insulated housing |
| US5202664A (en) * | 1992-01-28 | 1993-04-13 | Poulsen Peder Ulrik | Three phase transformer with frame shaped winding assemblies |
| WO2001065572A2 (en) * | 2000-03-02 | 2001-09-07 | Hoeglund Lennart | Transformer core |
| CN1328690A (en) * | 1998-10-26 | 2001-12-26 | A·T·T·高级变压器技术(1998)有限公司 | Three-phase transformer |
| CN1516206A (en) * | 2003-08-25 | 2004-07-28 | 广州特种变压器厂有限公司 | Resin-poured insulation dry transformer and its production method |
| CN1615530A (en) * | 2001-12-21 | 2005-05-11 | Abbt&D技术有限公司 | Integrated cooling duct for resin-encapsulated distribution transformer coils |
| US20090313812A1 (en) * | 2008-06-24 | 2009-12-24 | Sergey Pulnikov | Method for making electrical windings for electrical apparatus and transformers and winding obtained by said method |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB575564A (en) | 1943-03-27 | 1946-02-22 | Westinghouse Electric Int Co | Improvements in or relating to three-phase core structures for electrical induction apparatus |
| DE2051883B2 (en) | 1970-10-22 | 1976-07-29 | Lepper-Dominit Transformatoren Gmbh, 5340 Bad Honnef | Dry transformer coil prodn - uses viscous resin cured only after winding and fibre reinforced plastic coating on coil former |
| SE530911C2 (en) | 2007-03-07 | 2008-10-14 | Hexaformer Ab | Transformer arrangement |
-
2010
- 2010-03-20 EP EP10002974A patent/EP2367181A1/en not_active Withdrawn
-
2011
- 2011-02-01 CN CN2011800149468A patent/CN102792398A/en active Pending
- 2011-02-01 WO PCT/EP2011/000436 patent/WO2011116850A1/en active Application Filing
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4029097A1 (en) * | 1990-09-13 | 1992-03-19 | Messwandler Bau Ag | Self-cooling three=phase dry type transformer - has core with triangular layout in gas insulated housing |
| CN2085554U (en) * | 1991-04-24 | 1991-09-25 | 北京科学技术开发交流中心 | Energy-saving drying type transformer and reactance |
| US5202664A (en) * | 1992-01-28 | 1993-04-13 | Poulsen Peder Ulrik | Three phase transformer with frame shaped winding assemblies |
| CN1328690A (en) * | 1998-10-26 | 2001-12-26 | A·T·T·高级变压器技术(1998)有限公司 | Three-phase transformer |
| WO2001065572A2 (en) * | 2000-03-02 | 2001-09-07 | Hoeglund Lennart | Transformer core |
| CN1615530A (en) * | 2001-12-21 | 2005-05-11 | Abbt&D技术有限公司 | Integrated cooling duct for resin-encapsulated distribution transformer coils |
| CN1516206A (en) * | 2003-08-25 | 2004-07-28 | 广州特种变压器厂有限公司 | Resin-poured insulation dry transformer and its production method |
| US20090313812A1 (en) * | 2008-06-24 | 2009-12-24 | Sergey Pulnikov | Method for making electrical windings for electrical apparatus and transformers and winding obtained by said method |
Non-Patent Citations (1)
| Title |
|---|
| 陆士元: "试论变压器的发展和玻璃纤维制品在干式变压器中的应用", 《玻璃纤维》, no. 2, 30 April 2008 (2008-04-30), pages 13 - 15 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104575994A (en) * | 2013-10-18 | 2015-04-29 | Abb技术有限公司 | Transformer |
| CN104103406A (en) * | 2014-07-29 | 2014-10-15 | 上海华力电控设备有限公司 | Three-phase dry-type transformed |
Also Published As
| Publication number | Publication date |
|---|---|
| EP2367181A1 (en) | 2011-09-21 |
| WO2011116850A1 (en) | 2011-09-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102792398A (en) | Three-phase high performance dry-type transformer with epoxy- insulated coils and method for manufacturing of same | |
| CN103996507B (en) | Volume iron core traction transformer | |
| CN102054566B (en) | Transformer Winding and the method for strengthening Transformer Winding | |
| KR102122813B1 (en) | Optimal inductor | |
| EP2969491B1 (en) | Composite frame for electrical machines and methods for making same | |
| JP4295744B2 (en) | Round wire, coil, stator coil, rotor coil, and transformer | |
| JP6014747B2 (en) | Oil-filled transformer | |
| KR101481057B1 (en) | Production method of pole-mounted transformers | |
| US20150084732A1 (en) | Method, mold and system for manufacturing a transformer coil | |
| US20190280550A1 (en) | Laminated stack motor | |
| KR101695345B1 (en) | Power transformer with amorphous core | |
| CN205335042U (en) | Wear power transformer around silicon strip magnetic core | |
| KR102613866B1 (en) | Stator assemblies, motors, compressors and air conditioning equipment | |
| RU2566810C2 (en) | Method of coil manufacturing of high voltage electrotechnical device | |
| CN114300239A (en) | Dry-type transformer | |
| US20200194163A1 (en) | Coil | |
| KR20140067837A (en) | 3-phase mold transformer with wound core | |
| US20140210124A1 (en) | Cast Split Low Voltage Coil With Integrated Cooling Duct Placement After Winding Process | |
| EP2479764B1 (en) | Resin molded coil and molded transformer using the same | |
| CN104319078A (en) | 110kV and above stereoscopic wound core transformer and winding process thereof | |
| CN219553394U (en) | Coil structure of dry-type transformer | |
| CN217114080U (en) | Three-dimensional wound core transformer | |
| CN209088669U (en) | Motor stator coil supporting structure | |
| CN201655540U (en) | Winding former used for sectional type coils of transformers | |
| CN209000709U (en) | A kind of photovoltaic transformer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20121121 |