EP2294591A1 - Wassergekühlte drossel - Google Patents
Wassergekühlte drosselInfo
- Publication number
- EP2294591A1 EP2294591A1 EP09753402A EP09753402A EP2294591A1 EP 2294591 A1 EP2294591 A1 EP 2294591A1 EP 09753402 A EP09753402 A EP 09753402A EP 09753402 A EP09753402 A EP 09753402A EP 2294591 A1 EP2294591 A1 EP 2294591A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- component according
- disc
- coils
- flat
- cooler
- 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.)
- Granted
Links
- 238000004804 winding Methods 0.000 claims abstract description 24
- 238000001816 cooling Methods 0.000 claims description 21
- 239000002826 coolant Substances 0.000 claims description 17
- 229910052751 metal Inorganic materials 0.000 claims description 12
- 239000002184 metal Substances 0.000 claims description 12
- 239000004033 plastic Substances 0.000 claims description 12
- 229920003023 plastic Polymers 0.000 claims description 12
- 229910052782 aluminium Inorganic materials 0.000 claims description 9
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 8
- 238000010276 construction Methods 0.000 claims description 8
- 238000009413 insulation Methods 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 239000010949 copper Substances 0.000 claims description 5
- 230000001939 inductive effect Effects 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 239000002985 plastic film Substances 0.000 claims description 4
- 229920006255 plastic film Polymers 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 229910045601 alloy Inorganic materials 0.000 claims description 2
- 239000000956 alloy Substances 0.000 claims description 2
- 238000011038 discontinuous diafiltration by volume reduction Methods 0.000 claims description 2
- 229910052742 iron Inorganic materials 0.000 claims description 2
- 238000003825 pressing Methods 0.000 claims description 2
- 239000013585 weight reducing agent Substances 0.000 claims description 2
- 238000007493 shaping process Methods 0.000 claims 1
- 239000010935 stainless steel Substances 0.000 claims 1
- 229910001220 stainless steel Inorganic materials 0.000 claims 1
- 238000009434 installation Methods 0.000 abstract description 5
- 210000002414 leg Anatomy 0.000 description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 239000000110 cooling liquid Substances 0.000 description 5
- 239000010410 layer Substances 0.000 description 5
- 239000003570 air Substances 0.000 description 4
- 239000004020 conductor Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 101000927799 Homo sapiens Rho guanine nucleotide exchange factor 6 Proteins 0.000 description 1
- 102100033202 Rho guanine nucleotide exchange factor 6 Human genes 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 210000000689 upper leg Anatomy 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/08—Cooling; Ventilating
- H01F27/10—Liquid cooling
- H01F27/16—Water cooling
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/2871—Pancake coils
-
- 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
- H01F27/2876—Cooling
Definitions
- the invention relates to an electromagnetic component (throttle, transformer) according to claim 1, uses thereof according to claims 16 and 17 and a method according to claim 18.
- throttles In rectifier-fed plants, throttles often have to be used for smoothing and filtering purposes which produce high losses, are difficult to cool and have comparatively high weights and volumes. This is particularly unpleasant when such components are to be installed in cabinets.
- inductive power components In the lower industrial power range up to about 1MW plant power, inductive power components often become natural, for reasons of economy, i. cooled with ambient air, usually with forced air circulation. In this case, air is e.g. pressed by special recessed in the winding air channels. These measures increase the throttle weight and volume, and unfavorably also the copper demand. A good specific cooling effect can also be achieved only by increasing the winding temperature, which is very disturbing for the installation environment.
- Inductive components for medium frequency operation eg transformers for inductive heating systems, which work in the kHz range, generate high losses, which are dissipate practically only by means of water cooling.
- a cooling liquid Since this cooling liquid has the electrical potential of the surrounding conductor, it must be insulating, for example, when using water, the water must be deionized. Construction and cooling are costly in direct conductor cooling and therefore in conventional industrial plants hardly used.
- a medium and high frequency transformer which has split or undivided disc windings, wherein alternating primary and secondary disc coils are stacked.
- the disc windings are only partially cooled directly with water, oil or a gaseous coolant, while the heat loss in the remaining parts is dissipated by heat conduction to the directly cooled parts.
- the secondary winding has a cooling channel in which the coolant flows.
- a disadvantage of this arrangement is that the coolant is in direct contact with the Cu winding, which is undesirable and should be avoided.
- the object of the invention is to propose a design or technology for magnetic components and their cooling, with the following results:
- Another object of the invention is to provide a method for producing the component.
- Fig. 1 principle of a simple, single-phase choke
- FIG. 1A side view of Fig. 1st
- FIG. 1 B top view of FIG. 1
- Fig. 2 water-cooled three-phase running filter choke for a power converter plant
- FIG. 2A side view of FIG. 2.
- FIG. 2B is a plan view of FIG. 2.
- FIG. 4 winding package with 8 disk coils FIG. 4A side view of FIG. 4
- FIG. 5 shows a side view of a component according to the invention with water-cooled iron core.
- the invention relates to a design, or a technology for electromagnetic components (chokes, transformers), which consist of one or more disc-shaped coils with directly adjacent, electrically insulated, plate-shaped cooling elements, which are flowed through by a cooling medium.
- electromagnetic components chokes, transformers
- Fig. 1 shows the principle of a simple, single-phase choke.
- a throttle 10 consists of a core sheet package 1 with two legs 2, 2 'and 2 yokes 3, 3'.
- the thighs wear e.g. each 2 coils 4, 4 ', which are formed as single-layer disc coils, directly in between is a specially designed, double-acting flat cooler 5.
- the Einlagnier the disc coil causes each turn of the winding is directly connected to a cooling surface.
- a double-sided cooler can thus always cool 2 disc coils per leg, which has proven to be particularly advantageous.
- FIGS. 1A and 1B show the side view and the plan view of FIG. 1.
- the yokes 3, 3 ', the coils 4, 4', the flat cooler 5 and the leg 2 in FIG. 1B can be seen.
- the flat cooler 5 must be made insulating.
- a cooler in VoII plastic technology can be used, wherein the cooling medium or the cooling liquid is completely surrounded by plastic and the adjacent windings are electrically isolated.
- a metal cooler which is provided with an insulating layer.
- the flat cooler 5 may be formed as a multilayer metal construction with internal cooling structure and external plastic insulation, said plastic layer completely enclosing the radiator.
- metals aluminum and steel as well as their alloys are particularly well suited. It has surprisingly been found that the use of stainless, Non-magnetic steel is particularly advantageous, since thereby the harmful and undesirable eddy current losses are reduced compared to aluminum by a factor greater than 4.
- a thermally conductive plastic film of low hardness and yielding properties of a few tenths mm thickness is used.
- the heat contact surfaces must be contacted plane-parallel and with sufficient pressure.
- the electrical conductor and cooler insulations involved must have the highest possible thermal conductivity with simultaneous dielectric strength. These requirements can only be met by careful selection of modern materials, such as by ceramic-filled polymers or plastics in general.
- the construction of flat coolers and disk coils generally has air gaps, in which there are specially designed air-gap inserts.
- the coil can also be glued to the radiator surface elastic and heat-conducting.
- the number of flat cooler units in a component must be kept as low as possible for reasons of expense.
- this is achieved in that a horizontally continuous flat cooler cools the coils of both legs.
- a cooler cools a total of 4 coils, in a 3-phase arrangement with 3 legs even coils. This saves external connections and thus additional connection material for the cooling medium, since these connections are located inside the flat cooler.
- Fig. 2 shows a water-cooled filter throttle for a power converter plant.
- a 3-phase running, water-cooled filter choke for a converter plant in the power range 2 MW an embodiment of the inventive throttle with a total of 24 coil sections is described, which are arranged on 8 levels.
- the choke has an iron core with 3 wound legs 2, 2 ', 2 "Each leg has in this example 8 single-pancake coils 4, 4' (disks) .In each case 2 coil disks of each leg which sit on the same installation plane is a flat cooler 5.
- Fig. 3 shows the geometry of the flat cooler.
- the shape is S-shaped and thus has 3 recesses A, thus ensuring that the cooler does not work as a short-circuit winding due to the transformer coupling.
- the series connections between the respective above and below the flat cooler 5 coil discs can run.
- the flat coolers consist of several welded together aluminum or steel plates, which together have a thickness of less than 8 mm.
- the middle, water-carrying plates in this layer structure are structured to increase the heat transfer surface by means of knobs.
- the radiator plates are continuous, ie over the entire surface covered with an insulating layer of a few tenths of a mm.
- the insulating material used has a high insulation strength with sufficient thermal conductivity and mechanical pressure resistance.
- To equalize the contact pressure of the coils on the cooling surfaces latter with a special, relative soft, heat-conducting plastic film occupied, which also has a thickness of a few tenths of mm.
- 3A and 3B show the side view and the plan view to Fig. 3. Visible are the inlet and outlet nozzles 9, 9 'of the cooling medium of the flat cooler 5 and the recesses A.
- the mentioned 8 coils of a leg can be wound as single coils and then have to be switched individually - in the example in series -. With the choke executed these disturbing series connections were avoided by a special winding technique. In this case, stacked coils are partially wound in the opposite direction in the stack, whereby every second series connection is shifted into the coil interior. This makes it possible to place the series connections exactly in the above-mentioned recesses of the flat cooler.
- a flat cooler 5 may carry a plurality of coils 4, 4 'of a winding arrangement, e.g. 2 coils each phase of a multi-phase arrangement, the flat cooler is designed by the shape and the choice of material so that it has the lowest possible eddy current losses.
- suitable as a flat cooler insulation is a plastic with filling, for which a thermally conductive, insulating metal oxide such.
- a thermally conductive, insulating metal oxide such as Aluminum oxide or a carbide between 20 - 50% is added to the plastic.
- a thermally conductive plastic film with thicknesses of 0.1 - 0.4 mm can be used or a bond with a thermally conductive adhesive.
- Fig. 4 shows the winding package 11 with 8 disc coils. 4A and 4B, the corresponding side view and top view.
- the single disc coil 4 is shown with its outwardly leading terminal 12.
- the inner terminal 13 leads to the next adjacent disc coil.
- the disk coils 4, 4 1 of a phase or a build-up stack are wound so that external connections lying in the region of the flat cooler are avoided and that the internal series connections 13 fit into the recesses of the associated radiator plate provided for this purpose.
- the executed throttle shows as a result of the cooling measures taken both a weight reduction, as well as a volume reduction by about a factor of 2.5 compared to a forced air-cooled throttle equal construction capacity and conventional design with tubular layer winding.
- cooling arrangement according to the invention to other electromagnetic components, such as ironless chokes and transformers in general, and in particular to medium frequency transformers.
- FIG. 5 shows the side view of a component according to the invention with water-cooled iron core.
- two metal plates 14, 14 'preferably aluminum plates are attached, each end-welded tubes 16, preferably aluminum tubes has.
- the cooling medium is now also passed, whereby the iron core is additionally cooled efficiently.
- the cooling medium is first passed through the disc coils and then through the tubes 16.
- a method for producing the component is characterized in that the flat cooler 5 is glued to the disk coil 4 in a thermally conductive manner. As a result, the flat cooler and the disc coil form a modular unit.
- Uses find such components in water-cooled power converter systems and medium-frequency systems, in particular for inductive heating.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transformer Cooling (AREA)
- Coils Of Transformers For General Uses (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH7962008 | 2008-05-27 | ||
CH00714/09A CH698904A2 (de) | 2008-05-27 | 2009-05-07 | Wassergekühlte Drossel. |
PCT/CH2009/000173 WO2009143643A1 (de) | 2008-05-27 | 2009-05-25 | Wassergekühlte drossel |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2294591A1 true EP2294591A1 (de) | 2011-03-16 |
EP2294591B1 EP2294591B1 (de) | 2018-04-25 |
Family
ID=40983338
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP09753402.8A Active EP2294591B1 (de) | 2008-05-27 | 2009-05-25 | Wassergekühlte drossel |
Country Status (5)
Country | Link |
---|---|
US (1) | US8462506B2 (de) |
EP (1) | EP2294591B1 (de) |
CN (1) | CN102047357B (de) |
CH (1) | CH698904A2 (de) |
WO (1) | WO2009143643A1 (de) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20100277869A1 (en) * | 2009-09-24 | 2010-11-04 | General Electric Company | Systems, Methods, and Apparatus for Cooling a Power Conversion System |
CN101954525A (zh) * | 2010-09-27 | 2011-01-26 | 东莞市大忠电子有限公司 | Ei型变压器铁芯氩弧焊工艺 |
DE102011007334A1 (de) | 2011-04-13 | 2012-10-18 | Karl E. Brinkmann GmbH | Flüssigkeitsgekühlte induktive Komponente |
CN102506532A (zh) * | 2011-10-18 | 2012-06-20 | 中山普润斯电源设备技术有限公司 | 一种水冷装置 |
KR101610493B1 (ko) * | 2014-08-26 | 2016-04-07 | 현대자동차주식회사 | 변압기 냉각 장치 |
EP3288046B1 (de) | 2016-08-25 | 2021-04-14 | Siemens Aktiengesellschaft | Spulenvorrichtung |
DE202016105224U1 (de) | 2016-09-19 | 2016-11-11 | Trafomodern Transformatorengesellschaft M.B.H. | Anordnung einer fluidgekühlten elektromagnetischen Komponente |
KR101965266B1 (ko) * | 2017-08-02 | 2019-04-03 | 한국알박(주) | 전자석 어셈블리의 제조 방법 |
WO2020101905A1 (en) * | 2018-11-12 | 2020-05-22 | Carrier Corporation | Cooled transformer for an energy storage device |
CN110660563A (zh) * | 2019-10-12 | 2020-01-07 | 台达电子企业管理(上海)有限公司 | 磁性组件及电源模块 |
CN113674960B (zh) * | 2021-10-21 | 2021-12-24 | 江苏顺隆鸿泰电力设备有限公司 | 一种变压装置 |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1471096A (en) | 1919-05-08 | 1923-10-16 | Gen Electric | Electrical apparatus |
US2819431A (en) * | 1952-12-05 | 1958-01-07 | Louis R Maxwell | Electromagnet |
DE1057219B (de) * | 1958-02-26 | 1959-05-14 | Konrad Reichert Dipl Ing | Mittel- und Hochfrequenz-Leistungstransformator |
US3501272A (en) * | 1966-02-28 | 1970-03-17 | Standard Oil Co | Carbon purification process |
US4485289A (en) | 1982-07-29 | 1984-11-27 | Schwartz Charles A | Welding system |
DE3404457A1 (de) * | 1984-02-08 | 1985-08-08 | Siemens AG, 1000 Berlin und 8000 München | Einrichtung zur kuehlung eines magnetsystems |
FR2630612B1 (fr) * | 1988-04-26 | 1996-05-24 | Siderurgie Fse Inst Rech | Dispositif de protection des poles d'inducteurs et inducteur pourvu de ce dispositif |
US4956626A (en) * | 1989-01-13 | 1990-09-11 | Sundstrand Corporation | Inductor transformer cooling apparatus |
US5097241A (en) | 1989-12-29 | 1992-03-17 | Sundstrand Corporation | Cooling apparatus for windings |
EP0680055A1 (de) * | 1994-04-29 | 1995-11-02 | Hughes Aircraft Company | Hochfrequenztransformator mit einer im inneren flüssigkeitsgekühlten Wicklung |
US6259347B1 (en) * | 1997-09-30 | 2001-07-10 | The United States Of America As Represented By The Secretary Of The Navy | Electrical power cooling technique |
JP3279521B2 (ja) * | 1998-02-28 | 2002-04-30 | 三星電子株式会社 | 放熱構造を有する電子レンジの高圧トランスフォ−マ |
US6163241A (en) | 1999-08-31 | 2000-12-19 | Stupak, Jr.; Joseph J. | Coil and method for magnetizing an article |
WO2005082226A1 (ja) * | 2004-02-27 | 2005-09-09 | Olympus Corporation | 内視鏡 |
DE102004021107A1 (de) * | 2004-04-29 | 2005-11-24 | Bosch Rexroth Ag | Flüssigkeitskühlung für Eisenkern und Wicklungspakete |
US7129808B2 (en) * | 2004-09-01 | 2006-10-31 | Rockwell Automation Technologies, Inc. | Core cooling for electrical components |
-
2009
- 2009-05-07 CH CH00714/09A patent/CH698904A2/de not_active Application Discontinuation
- 2009-05-25 US US12/994,648 patent/US8462506B2/en active Active
- 2009-05-25 WO PCT/CH2009/000173 patent/WO2009143643A1/de active Application Filing
- 2009-05-25 EP EP09753402.8A patent/EP2294591B1/de active Active
- 2009-05-25 CN CN2009801192167A patent/CN102047357B/zh active Active
Non-Patent Citations (1)
Title |
---|
See references of WO2009143643A1 * |
Also Published As
Publication number | Publication date |
---|---|
CH698904A2 (de) | 2009-11-30 |
CN102047357A (zh) | 2011-05-04 |
US8462506B2 (en) | 2013-06-11 |
WO2009143643A1 (de) | 2009-12-03 |
US20110075368A1 (en) | 2011-03-31 |
CN102047357B (zh) | 2012-12-26 |
EP2294591B1 (de) | 2018-04-25 |
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