EP1592028A2 - Fluid cooling device for iron core and windings - Google Patents
Fluid cooling device for iron core and windings Download PDFInfo
- Publication number
- EP1592028A2 EP1592028A2 EP05005490A EP05005490A EP1592028A2 EP 1592028 A2 EP1592028 A2 EP 1592028A2 EP 05005490 A EP05005490 A EP 05005490A EP 05005490 A EP05005490 A EP 05005490A EP 1592028 A2 EP1592028 A2 EP 1592028A2
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- EP
- European Patent Office
- Prior art keywords
- heat
- iron core
- cooling
- absorber
- windings
- 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.)
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Classifications
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- 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
-
- 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
- H01F27/30—Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support
- H01F27/306—Fastening or mounting coils or windings on core, casing or other support
Definitions
- the invention is concerned with the cooling of chokes and transformers according to Claim 1.
- the device should as effectively as possible the heat from the surface record and dissipate and at the same time simple and inexpensive to produce, possibly even be retrofitted, be.
- the invention solves this problem u.a. in that at least one surface of a Body, for example, the iron core of a mains choke or a transformer, is brought into operative connection with a heat exchanger. This is the Heat dissipation guaranteed directly from the surface and is by means of the Heat exchanger, which is flooded by a cooling fluid, continuously dissipated.
- the Heat exchanger only one heat absorber and one with the heat absorber in Active connection standing cooling fluid guide comprises, so the overall arrangement more or less consists of only two main components. These Two-component arrangement can also later on the surface heat-absorbing components are attached or placed.
- the cooling can Therefore, be considered as a modular system, which is not to a certain component is bound or in the construction of a component necessarily to be considered.
- the heat absorber is a guide plate, preferably a metallic one Plate, in particular made of copper.
- This will be a large area Heat transfer guaranteed, provided the entire surface with the heat radiating Surface of the component component is in operative connection.
- the cooling fluid guide preferably by means of a channel is realized, wherein the channel is formed as a columnar hollow body and at least in the area of the active compound with the absorber a square or has rounded cross-section.
- the fluid can then be targeted and independent of the spatial position of the heat exchanger by means of a suitably sized Pressure to be transported to the heat sources.
- An angular cross section increases the Contact surface between fluid guide and absorber.
- a round cross section is cheaper to purchase.
- the invention is suitable for use on at least one iron core and / or a mains choke, in particular the mains choke of a regenerative Inverter (eg converter series SFT from Indramat Refu GmbH with sinusoidal Feedback).
- Mains chokes have very high currents (around 600 amps) to process and have relatively high inductances (around 180 ⁇ H). Due to the ohmic Resistance of the windings, either from single wires or even out Copper plates or copper bars, these chokes develop one high heat loss. This heat loss can, if it is not dissipated, too Damage to the insulation and cause business interruptions and according to subsequent costs entail.
- the device according to the invention possibly also Depending on a particular application, attach later or produce these risks and eliminate unnecessary costs.
- the same benefits would come with transformers or others electrical components, provided the same concept for cooling purposes would be used.
- Fig. 1 shows a first embodiment of the invention and in detail a Heat exchanger 14 with copper plate 12, a meander-shaped cooling coil 13 with 90 ° bends 13a, 180 ° bows 13b, terminal lugs 13c and straight elements 13d and an iron core 11 and winding packages 10th
- the line reactor of an inverter shown here comprises three components Copper windings 10 are penetrated by three iron core legs 11. Of the Iron core itself is used for channeling the forming during operation magnetic River. At the two end faces of the arrangement is in each case an inventive Cooling device 14 attached.
- the copper plate 12 can be seen and the Coolant guide 13, which makes sense from a variety of Single components (13a, 13b, 13c, 13d) is formed.
- the individual components can soldered or welded together.
- the coolant guide 13 is meander-shaped soldered or otherwise attached to the copper plate and transports the iron core 11 emitted and absorbed by the heat absorber 12 Heat off. Both heat exchangers 14 could be connected in parallel or in series via a Pump be supplied with liquid coolant.
- the coolant flows through with a From the pressure and cross section dependent force the cooling system and leads the over the Absorber or the pipe walls 13, 13a, 13b, 13c absorbed heat effectively from.
- the heat absorber also radiates additional heat over its surface to the environment. By enlarging this surface, e.g. by means of ribs, An additional cooling effect could be effected.
- FIG. 1 shows with the Fig. 1 largely identical components 10, 11, 12, 13, 13a, 13b.
- the difference from Figure 1 is that the heat exchanger now not to the End faces of the iron core 11 are mounted, but on the upper and lower sides and partially within the iron core encompassed by the copper coil.
- the sewer system 13 of the coolant is U-shaped, connecting piece 13c are not shown here.
- the lines 13 are shown here with a round cross-section, the support surface on Absorber 12 is thereby smaller than in a rectangular cross-section. Therefore would be to favor a rectangular cross section or the line 13 should be at least partially embedded in the absorber surface.
Abstract
Description
Die Erfindung befasst sich mit der Kühlung von Drosseln und Transformatoren gemäß Anspruch 1.The invention is concerned with the cooling of chokes and transformers according to Claim 1.
Im Stand der Technik sind Luft- und Wasserkühlungen bekannt. Eine z.B. forcierte Luftkühlung zieht aber große Bauvolumina und zusätzlich erhöhten Geräuschpegel nach sich. Weitere Konsequenz sind eine kürzere Lebensdauer wegen ungünstiger Kühlwirkung und ein hoher umgebungsbedingter Einfluss. Die erhöhte Erwärmung der unmittelbar benachbarten Peripherie und ggf. des Schaltschrankes sind weitere Folgen. Höhere Schutzarten wie IP 54 sind nur schwer zu realisieren.In the prior art air and water cooling are known. A e.g. forced Air cooling, however, draws large construction volumes and additionally increased noise level yourself. Another consequence is a shorter life due to unfavorable Cooling effect and high environmental impact. The increased warming of the immediately adjacent peripherals and possibly the control cabinet are other consequences. Higher degrees of protection such as IP 54 are difficult to realize.
Die DE 197 01 269 A1 zeigt einen Transformator mit Flüssigkühlung für die galvanische Trennung und Spannungsanpassung von Wechsel- und Drehstromsystemen. Das Kühlmittel durchfließt mehrere Temperaturzonen innerhalb der Wicklungen und führt die Wärme mittels einer Kanalisation ab. Solche Konstruktionen sind aufwendig herzustellen und im Falle einer Leckage werden sie unbrauchbar. Auch eine Nachrüstbarkeit bestehender Transformatoren ist durch diese Lösung nicht gegeben, da die Kühlung als konstruktives Merkmal in die Anordnung integriert ist. Modularität ist nicht gegeben und nicht beabsichtigt.DE 197 01 269 A1 shows a transformer with liquid cooling for the Galvanic isolation and voltage adjustment of AC and DC Three-phase systems. The coolant flows through several temperature zones within the windings and dissipates the heat by means of a sewer system. Such Constructions are expensive to produce and in case of leakage they become unusable. A retrofittability of existing transformers is through this Solution not given, as the cooling as a constructive feature in the arrangement is integrated. Modularity is not given and not intended.
Es ist die Aufgabe der Erfindung eine Vorrichtung, insbesondere zur Kühlung von Wicklungspaketen einer Netzdrossel oder eines Transformators, zur Verfügung zu stellen. Die Vorrichtung soll möglichst effektiv die Wärme von der Oberfläche aufnehmen und abführen und gleichzeitig einfach und preiswert herstellbar, ggf. sogar nachrüstbar, sein.It is the object of the invention to provide a device, in particular for cooling Winding packages of a line reactor or a transformer, available put. The device should as effectively as possible the heat from the surface record and dissipate and at the same time simple and inexpensive to produce, possibly even be retrofitted, be.
Die Erfindung löst diese Aufgabe u.a. dadurch, dass wenigstens eine Oberfläche eines Körpers, also zum Beispiel der Eisenkern einer Netzdrossel- oder eines Transformators, mit einem Wärmetauscher in Wirkverbindung gebracht wird. Damit ist die Wärmeabfuhr direkt von der Oberfläche gewährleistet und wird mittels des Wärmetauschers, der von einem Kühlfluid durchflutet ist, kontinuierlich abgeführt. The invention solves this problem u.a. in that at least one surface of a Body, for example, the iron core of a mains choke or a transformer, is brought into operative connection with a heat exchanger. This is the Heat dissipation guaranteed directly from the surface and is by means of the Heat exchanger, which is flooded by a cooling fluid, continuously dissipated.
Die preiswerte und einfache Herstellbarkeit lässt sich dadurch realisieren, dass der Wärmetauscher lediglich einen Wärmeabsorber und eine mit dem Wärmeabsorber in Wirkverbindung stehende Kühlfluidführung umfasst, also die Gesamtanordnung aus mehr oder weniger nur zwei Hauptkomponenten besteht. Diese Zweikomponentenanordnung kann auch nachträglich noch an der Oberfläche wärmeabsorbierender Bauteile befestigt oder aufgelegt werden. Die Kühlung kann daher als modular aufgebautes System betrachtet werden, welches nicht an eine bestimmte Komponente gebunden ist oder bei der Konstruktion einer Komponente unbedingt zu berücksichtigen wäre.The inexpensive and easy manufacturability can be realized that the Heat exchanger only one heat absorber and one with the heat absorber in Active connection standing cooling fluid guide comprises, so the overall arrangement more or less consists of only two main components. These Two-component arrangement can also later on the surface heat-absorbing components are attached or placed. The cooling can Therefore, be considered as a modular system, which is not to a certain component is bound or in the construction of a component necessarily to be considered.
Zweckmäßig ist der Wärmeabsorber eine Leitplatte, vorzugsweise eine metallische Platte, insbesondere aus Kupfer hergestellt. Hierdurch wird ein großflächiger Wärmeübergang gewährleistet, sofern die gesamte Fläche mit der wärmeabstrahlenden Fläche der Bauteilkomponente in Wirkverbindung steht.Suitably, the heat absorber is a guide plate, preferably a metallic one Plate, in particular made of copper. This will be a large area Heat transfer guaranteed, provided the entire surface with the heat radiating Surface of the component component is in operative connection.
Vorteilhaft ist es auch, wenn die Kühlfluidführung vorzugsweise mittels eines Kanals realisiert ist, wobei der Kanal als säulenförmiger Hohlkörper ausgebildet ist und zumindest im Bereich der Wirkverbindung mit dem Absorber einen eckigen oder abgerundeten Querschnitt aufweist. Das Fluid kann dann gezielt und unabhängig von der räumlichen Lage des Wärmetauschers auch mittels eines, geeignet bemessenen Druckes zu den Wärmequellen transportiert werden. Ein eckiger Querschnitt erhöht die Kontaktfläche zwischen Fluidführung und Absorber. Ein runder Querschnitt ist preiswerter zu beziehen.It is also advantageous if the cooling fluid guide preferably by means of a channel is realized, wherein the channel is formed as a columnar hollow body and at least in the area of the active compound with the absorber a square or has rounded cross-section. The fluid can then be targeted and independent of the spatial position of the heat exchanger by means of a suitably sized Pressure to be transported to the heat sources. An angular cross section increases the Contact surface between fluid guide and absorber. A round cross section is cheaper to purchase.
Verläuft die Kühlfluidführung zumindest im Bereich der Wirkverbindung auf einer Wärmeabsorberoberfläche mäanderförmig, spiralförmig oder U-förmig, so steigert sich der wirksame Wärmeübergang mit der Anzahl der Windungen, da automatisch die wirksame Fläche zunimmt. Bei einer Befestigung der Führung, insbesondere mittels Löt- oder Schweißverbindungen auf der Absorberoberfläche kann eine stabile und lageunabhängige Konstruktion erreicht werden. Natürlich sind auch lösbare Verbindungen mittels Clipsen o.ä. möglich. Das würde den Service- bzw. Wartungsumfang im Falle eines Leitungsbruches erheblich reduzieren. Does the cooling fluid guide at least in the region of the operative connection on a Heat absorber surface meandering, spiral or U-shaped, so increases the effective heat transfer with the number of turns, since automatically the effective area increases. When mounting the guide, in particular by means of Soldering or welding on the absorber surface can be a stable and position-independent construction can be achieved. Of course, they are also detachable Connections by means of clips or the like possible. That would be the service or Reduce the scope of maintenance considerably in the event of a line break.
Bei einem abgerundeten oder runden Querschnitt könnte man mit Löt- oder Schweißbahnen die Kontaktfläche zwischen Führung und Absorber erhöhen. Auch wäre es denkbar die Führung teilweise oder vollständig in den Absorber einzulassen, um eine weitere Steigerung des Wärmeübertragungsverhaltens zu erzielen. Ein Ausgießen eventueller Zwischenräume zwischen Führung und Absorberausnehmungen würde ungenaue Passungen ausgleichen.For a rounded or round cross section you could use solder or Welding webs increase the contact area between the guide and the absorber. Also would be it is conceivable to partially or completely introduce the guide into the absorber, to a to achieve a further increase in the heat transfer behavior. A pouring out any gaps between leadership and Absorberausnehmungen would Balance inaccurate fits.
Schaltet man zur Kühlung mehrerer Komponenten eines Bauteiles mehrere Wärmetauscher in Reihe oder parallel, so ergibt sich bei der Parallelschaltung eine virtuell größere Querschnittsfläche der Kühlmittelleitung und damit ein verminderter Druck im Röhrensystem. Die Serienschaltung dagegen, würde eine bessere Ausnutzung der Kühlflüssigkeit bewirken, da die Wärme mehrerer Komponenten aufgenommen würde.If you switch several to cool several components of a component Heat exchangers in series or in parallel, this results in the parallel circuit one Virtually larger cross-sectional area of the coolant line and thus a reduced Pressure in the tube system. The series circuit, on the other hand, would make better use of it cause the cooling liquid, since the heat absorbed by several components would.
Optimal ist die Erfindung geeignet zum Einsatz auf zumindest einem Eisenkern und/oder einer Netzdrossel, insbesondere der Netzdrossel eines rückspeisenden Umrichters (bspw. Umrichterbaureihe SFT von Indramat Refu GmbH mit sinusförmiger Rückspeisung). Netzdrosseln haben sehr hohe Ströme (um 600 Ampere) zu verarbeiten und weisen relativ hohe Induktivitäten auf (um 180 µH). Aufgrund des ohmschen Widerstandes der Wicklungen, die entweder aus einzelnen Drähten oder auch aus Kupferplatten- oder Kupferschienen bestehen können, entwickeln diese Drosseln eine hohe Verlustwärme. Diese Verlustwärme kann, sofern sie nicht abgeführt wird, zu Schäden an der Isolierung und zu Betriebsausfällen führen und dem gemäß Folgekosten nach sich ziehen. Mittels der erfindungsgemäßen Vorrichtung, die sich ggf. auch abhängig von einem bestimmten Anwendungsfall nachträglich noch anbringen oder herstellen ließe, werden diese Gefahren gebannt und unnötige Kosten vermieden. Natürlich kämen die gleichen Vorteile auch bei Transformatoren oder anderen elektrischen Bauteilen zum Tragen, sofern das gleiche Konzept zu Kühlzwecken verwendet würde. Optimally, the invention is suitable for use on at least one iron core and / or a mains choke, in particular the mains choke of a regenerative Inverter (eg converter series SFT from Indramat Refu GmbH with sinusoidal Feedback). Mains chokes have very high currents (around 600 amps) to process and have relatively high inductances (around 180 μH). Due to the ohmic Resistance of the windings, either from single wires or even out Copper plates or copper bars, these chokes develop one high heat loss. This heat loss can, if it is not dissipated, too Damage to the insulation and cause business interruptions and according to subsequent costs entail. By means of the device according to the invention, possibly also Depending on a particular application, attach later or produce these risks and eliminate unnecessary costs. Of course, the same benefits would come with transformers or others electrical components, provided the same concept for cooling purposes would be used.
Fig. 1 zeigt eine erste Ausgestaltungsmöglichkeit der Erfindung und im Detail einen
Wärmetauscher 14 mit Kupferplatte 12, eine mäanderförmig ausgebildete Kühlschlange
13 mit 90°-Bögen 13a, 180°-Bögen 13b, Anschlussnasen 13c und geraden Elementen
13d sowie einen Eisenkern 11 und Wicklungspakete 10.Fig. 1 shows a first embodiment of the invention and in detail a
Die hier dargestellte Netzdrossel eines Umrichters umfasst als Komponenten drei
Kupferwicklungen 10 die von drei Eisenkernschenkeln 11 durchdrungen werden. Der
Eisenkern selbst dient zur Kanalisierung des sich im Betrieb ausbildenden magnetischen
Flusses. An den beiden Stirnseiten der Anordnung ist jeweils eine erfindungsgemäße
Kühlvorrichtung 14 befestigt. Deutlich ist die Kupferplatte 12 zu sehen und die
Kühlmittelführung 13, welche sinnvollerweise aus einer Vielzahl von
Einzelkomponenten (13a, 13b, 13c, 13d) gebildet wird. Die Einzelkomponenten können
miteinander verlötet oder verschweißt werden. Die Kühlmittelführung 13 ist
mäanderförmig auf der Kupferplatte angelötet oder anderweitig befestigt und
transportiert die von Eisenkern 11 emittierte und vom Wärmeabsorber 12 absorbierte
Wärme ab. Beide Wärmetauscher 14 könnten parallel oder in Serie geschaltet über eine
Pumpe mit flüssigem Kühlmittel versorgt werden. Das Kühlmittel durchflutet mit einer
vom Druck und Querschnitt abhängigen Kraft das Kühlsystem und führt die über den
Absorber bzw. die Rohrwandungen 13, 13a, 13b, 13c aufgenommene Wärme effektiv
ab. Der Wärmeabsorber strahlt außerdem noch zusätzlich Wärme über seine Oberfläche
an die Umgebung ab. Durch Vergrößerung dieser Oberfläche, z.B. mittels Rippen,
könnte ein zusätzlicher Kühleffekt bewirkt werden.The line reactor of an inverter shown here comprises three
Es sind außerdem noch weitere, für die Erfindung jedoch nicht relevante und daher nicht näher beschriebene Umrichterkomponenten, wie bspw. Anschlusswinkel, dargestellt.There are also other, but not relevant to the invention and therefore Unspecified converter components, such as. Connection angle, shown.
Fig. 2 zeigt mit der Fig. 1 weitestgehend identische Komponenten 10, 11, 12, 13, 13a,
13b. Der Unterschied zur Figur 1 liegt darin, dass Wärmetauscher nun nicht an den
Stirnseiten des Eisenkernes 11 angebracht sind, sondern an den Ober- und Unterseiten
und teilweise innerhalb des von der Kupferwicklung umfassten Eisenkernes. 2 shows with the Fig. 1 largely
Die Kanalisation 13 des Kühlmittels ist U-förmig ausgebildet, Anschlussstutzen 13c
sind hier nicht gezeigt.The
Die Leitungen 13 sind hier mit rundem Querschnitt dargestellt, die Auflagefläche am
Absorber 12 ist dadurch jedoch geringer als bei einem rechteckigen Querschnitt. Daher
wäre ein rechteckiger Querschnitt zu favorisieren oder die Leitung 13 sollte zumindest
teilweise in die Absorberoberfläche eingelassen werden.The
Die insgesamt 6 Wärmetauscher könnten nun in Reihe oder parallel geschaltet oder in beliebiger Kombination miteinander verschaltet werden. Die in Figur 2 gezeigte Ausführung ist die von der Anmelderin bevorzugte Ausführungsform. Auch eine Kombination aus Figur 1 und Figur 2 wäre selbstverständlich denkbar und machbar, um die Wärmeabfuhr zu maximieren.The total of 6 heat exchangers could now be connected in series or in parallel or in Any combination can be interconnected. The shown in Figure 2 Embodiment is the preferred embodiment by the Applicant. Also one Combination of Figure 1 and Figure 2 would of course be conceivable and feasible to to maximize heat dissipation.
Aus beiden Figuren ist leicht zu erkennen, dass eine erfindungsgemäße Kühlung auch bei bestehenden Drosseln/Transformatoren angebracht werden könnte. Dies gilt ohne Einschränkung zumindest für die in Figur 1 beschriebene Lösung. Dem Wunsch nach einer Nachrüstbarkeit für bestehende Lösungen wird daher durch die Erfindung ebenfalls Rechnung getragen. Einfach ließe sich um diese Anordnung eine Umhüllung konstruieren, welche dem Wunsch nach einer möglichst hohen Schutzart und Abschirmung gerecht würde. Die Erfindung gewährleistet eine sehr hohe Modularität. From both figures it is easy to see that a cooling according to the invention also could be installed on existing reactors / transformers. This is without Restriction at least for the solution described in Figure 1. The desire for retrofitting for existing solutions is therefore by the invention also taken into account. It would be easy to wrap around this arrangement construct, which the desire for the highest possible degree of protection and Shielding would do justice. The invention ensures a very high modularity.
- 1.01.0
- Wicklungspaketwinding package
- 1111
- Eisenkerniron core
- 1212
- Absorberabsorber
- 1313
- Kühlkanalcooling channel
- 13a13a
- 90°-Bogen90 ° bend
- 13b13b
- 180° - Bogen180 ° - bow
- 13c13c
- Anschlussstutzenspigot
- 13d13d
- Gerade LeitungStraight line
- 1414
- Wärmetauscherheat exchangers
Claims (6)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102004021107A DE102004021107A1 (en) | 2004-04-29 | 2004-04-29 | Liquid cooling for iron core and winding packages |
| DE102004021107 | 2004-04-29 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP1592028A2 true EP1592028A2 (en) | 2005-11-02 |
| EP1592028A3 EP1592028A3 (en) | 2007-03-07 |
| EP1592028B1 EP1592028B1 (en) | 2009-12-09 |
Family
ID=34934250
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP05005490A Not-in-force EP1592028B1 (en) | 2004-04-29 | 2005-03-14 | Fluid cooling device for iron core and windings |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US7227754B2 (en) |
| EP (1) | EP1592028B1 (en) |
| JP (1) | JP2005317982A (en) |
| AT (1) | ATE451704T1 (en) |
| DE (2) | DE102004021107A1 (en) |
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| EP1641003A2 (en) * | 2004-09-01 | 2006-03-29 | Rockwell Automation Technologies, Inc. | Cooling of a bobbin assembly for an electrical component |
| WO2009143643A1 (en) * | 2008-05-27 | 2009-12-03 | Ids Holding Ag | Water-cooled reactor |
| DE102011007334A1 (en) * | 2011-04-13 | 2012-10-18 | Karl E. Brinkmann GmbH | Liquid-cooled inductive component |
| WO2015144177A1 (en) * | 2014-03-25 | 2015-10-01 | Vestas Wind Systems A/S | Liquid-cooled electrical apparatus |
| EP2850724A4 (en) * | 2012-05-17 | 2015-11-25 | Elwha Llc | Electrical device with emergency cooling system |
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| DE102005036299B4 (en) * | 2005-08-02 | 2008-01-24 | Siemens Ag | cooling arrangement |
| JP2008186904A (en) * | 2007-01-29 | 2008-08-14 | Daikin Ind Ltd | Reactor and air conditioner |
| FI20070160A0 (en) * | 2007-02-26 | 2007-02-26 | Jarkko Salomaeki | inductor core |
| US7893804B2 (en) * | 2007-06-27 | 2011-02-22 | Rockwell Automation Technologies, Inc. | Electric coil and core cooling method and apparatus |
| US8081462B2 (en) | 2007-09-13 | 2011-12-20 | Rockwell Automation Technologies, Inc. | Modular liquid cooling system |
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| DE112017008067T5 (en) * | 2017-11-08 | 2020-06-18 | Mitsubishi Electric Corporation | Transformer and power converter device |
| US10425080B1 (en) | 2018-11-06 | 2019-09-24 | Crane Electronics, Inc. | Magnetic peak current mode control for radiation tolerant active driven synchronous power converters |
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| JPH07297043A (en) * | 1994-04-22 | 1995-11-10 | Hitachi Ltd | Transformer for charging electric car |
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2005
- 2005-03-14 DE DE502005008660T patent/DE502005008660D1/en active Active
- 2005-03-14 AT AT05005490T patent/ATE451704T1/en not_active IP Right Cessation
- 2005-03-14 EP EP05005490A patent/EP1592028B1/en not_active Not-in-force
- 2005-04-26 US US11/114,579 patent/US7227754B2/en not_active Expired - Fee Related
- 2005-05-02 JP JP2005134455A patent/JP2005317982A/en active Pending
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| DE19701269A1 (en) * | 1997-01-16 | 1998-07-23 | Ask Antriebs Steuerungs Und In | Isolation and matching transformer with liquid cooling |
| WO2001037292A1 (en) * | 1999-11-17 | 2001-05-25 | Longardner Robert L | Apparatus and method for cooling power transformers |
| WO2001063629A1 (en) * | 2000-02-24 | 2001-08-30 | Unifin International, Inc. | System and method for cooling transformers |
| JP2002353035A (en) * | 2001-05-23 | 2002-12-06 | Nissin Electric Co Ltd | Electric apparatus |
| JP2003188021A (en) * | 2001-12-17 | 2003-07-04 | Toshiba Corp | External cooling device of electric equipment |
| EP1357565A2 (en) * | 2002-04-23 | 2003-10-29 | Puretec Co., Ltd. | Method and device for cooling high voltage transformer for microwave oven |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1641003A2 (en) * | 2004-09-01 | 2006-03-29 | Rockwell Automation Technologies, Inc. | Cooling of a bobbin assembly for an electrical component |
| EP1641003A3 (en) * | 2004-09-01 | 2006-07-12 | Rockwell Automation Technologies, Inc. | Cooling of a bobbin assembly for an electrical component |
| US7129808B2 (en) | 2004-09-01 | 2006-10-31 | Rockwell Automation Technologies, Inc. | Core cooling for electrical components |
| WO2009143643A1 (en) * | 2008-05-27 | 2009-12-03 | Ids Holding Ag | Water-cooled reactor |
| US8462506B2 (en) | 2008-05-27 | 2013-06-11 | Woodward Ids Switzerland Ag | Water-cooled reactor |
| DE102011007334A1 (en) * | 2011-04-13 | 2012-10-18 | Karl E. Brinkmann GmbH | Liquid-cooled inductive component |
| EP2850724A4 (en) * | 2012-05-17 | 2015-11-25 | Elwha Llc | Electrical device with emergency cooling system |
| WO2015144177A1 (en) * | 2014-03-25 | 2015-10-01 | Vestas Wind Systems A/S | Liquid-cooled electrical apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102004021107A1 (en) | 2005-11-24 |
| JP2005317982A (en) | 2005-11-10 |
| US20050243502A1 (en) | 2005-11-03 |
| US7227754B2 (en) | 2007-06-05 |
| EP1592028B1 (en) | 2009-12-09 |
| ATE451704T1 (en) | 2009-12-15 |
| DE502005008660D1 (en) | 2010-01-21 |
| EP1592028A3 (en) | 2007-03-07 |
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