EP2294591A1 - Bobine de choc a refroidissement par eau - Google Patents

Bobine de choc a refroidissement par eau

Info

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
Application number
EP09753402A
Other languages
German (de)
English (en)
Other versions
EP2294591B1 (fr
Inventor
Alexander Stoev
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Woodward Switzerland GmbH
Original Assignee
IDS HOLDING AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by IDS HOLDING AG filed Critical IDS HOLDING AG
Publication of EP2294591A1 publication Critical patent/EP2294591A1/fr
Application granted granted Critical
Publication of EP2294591B1 publication Critical patent/EP2294591B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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)
  • Coils Of Transformers For General Uses (AREA)
  • Transformer Cooling (AREA)

Abstract

L’invention concerne un composant électromagnétique (bobine de choc, transformateur) à refroidissement par liquide composé de plusieurs bobines (4, 4') en galette comprenant un ou plusieurs enroulements et des refroidisseurs plats (5) disposés entre ceux-ci. Selon l’invention, au moins 2 bobines en galette (4, 4') sont associées à un refroidisseur plat (5) et tous les éléments enroulés (enroulements des bobines) présentent un contact thermique direct avec les surfaces du refroidisseur plat (5). Ces composants peuvent être utilisés dans les équipements à convertisseur statique et dans les équipements à moyenne fréquence.
EP09753402.8A 2008-05-27 2009-05-25 Bobine de choc a refroidissement par eau Active EP2294591B1 (fr)

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 (fr) 2008-05-27 2009-05-25 Bobine de choc à refroidissement par eau

Publications (2)

Publication Number Publication Date
EP2294591A1 true EP2294591A1 (fr) 2011-03-16
EP2294591B1 EP2294591B1 (fr) 2018-04-25

Family

ID=40983338

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09753402.8A Active EP2294591B1 (fr) 2008-05-27 2009-05-25 Bobine de choc a refroidissement par eau

Country Status (5)

Country Link
US (1) US8462506B2 (fr)
EP (1) EP2294591B1 (fr)
CN (1) CN102047357B (fr)
CH (1) CH698904A2 (fr)
WO (1) WO2009143643A1 (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
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 (fr) * 2016-08-25 2021-04-14 Siemens Aktiengesellschaft Dispositif de bobines
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
EP3881343A1 (fr) * 2018-11-12 2021-09-22 Carrier Corporation Transformateur refroidi pour dispositif de stockage d'énergie
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

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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 (fr) * 1994-04-29 1995-11-02 Hughes Aircraft Company Transformateur à haute fréquence comportant un enroulement refroidi intérieurement par liquide
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
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WO2005082226A1 (fr) * 2004-02-27 2005-09-09 Olympus Corporation Endoscope
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Also Published As

Publication number Publication date
US8462506B2 (en) 2013-06-11
CH698904A2 (de) 2009-11-30
CN102047357A (zh) 2011-05-04
CN102047357B (zh) 2012-12-26
WO2009143643A1 (fr) 2009-12-03
EP2294591B1 (fr) 2018-04-25
US20110075368A1 (en) 2011-03-31

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