WO2012100810A1 - Élément de refroidissement pour un transformateur comprenant de la céramique - Google Patents

Élément de refroidissement pour un transformateur comprenant de la céramique Download PDF

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Publication number
WO2012100810A1
WO2012100810A1 PCT/EP2011/050878 EP2011050878W WO2012100810A1 WO 2012100810 A1 WO2012100810 A1 WO 2012100810A1 EP 2011050878 W EP2011050878 W EP 2011050878W WO 2012100810 A1 WO2012100810 A1 WO 2012100810A1
Authority
WO
WIPO (PCT)
Prior art keywords
cooling component
cooling
transformer
component
core
Prior art date
Application number
PCT/EP2011/050878
Other languages
English (en)
Inventor
Martin Wuethrich
Frank BUERVENICH
Original Assignee
Schaffner Emv 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 Schaffner Emv Ag filed Critical Schaffner Emv Ag
Priority to PCT/EP2011/050878 priority Critical patent/WO2012100810A1/fr
Publication of WO2012100810A1 publication Critical patent/WO2012100810A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
    • F28F21/04—Constructions of heat-exchange apparatus characterised by the selection of particular materials of ceramic; of concrete; of natural stone
    • 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
    • H01F27/02—Casings
    • H01F27/025—Constructional details relating to cooling

Definitions

  • the present invention relates to a cooling component, and in particularly, but not exclusively to a cooling component which is suitable for liquid cooling of a core of a transformer or reactor (thereafter named "transformer" only).
  • the cooling body through which cooling fluid flows is usually composed of aluminium, or stainless steel. Such materials are robust and offer high resistance to corrosion which may be caused by cooling fluids. However, each of these materials have disadvantages; in the case of aluminium cooling bodies strong eddy currents are created in the aluminium cooling bodies by the magnetic field exhibited from the core of the transformer, especially at higher frequencies (fPWM / switching frequency). The creation of strong eddy currents leads to high losses (eddy current losses).
  • stainless steel cooling bodies offer a different disadvantage in that stainless steel has low thermal conductivity and a high density; thus stainless steel cooling bodies a not effective at conducting heat away from the core of the transformer to the cooling fluid which flows within said stainless steel cooling body.
  • Plastic cooling bodies which are not common, but are sometimes used are not capable of withstanding high temperatures. The cores and windings of transformers which are currently in use can reach temperatures of above 200°C, thus plastic cooling bodies are susceptible to melting and failure when used to cool the cores of modern transformers.
  • a cooling component having one or more channels defined therein, wherein the cooling component comprises ceramic.
  • Ceramic in as referred to in the present invention, is aluminium oxide (AI203).
  • Cooling fluid can flow in the one or more channels; the cooling fluid can absorb heat energy from the core of a transformer thus cooling the core and winding of the transformer.
  • the cooling component comprises ceramic
  • it ensures that no eddy currents are be created in the cooling component by the magnetic field exhibited from the core of the transformer.
  • ceramic is a good heat conductor thus is effective at conducting heat away from the core and winding of the transformer to any cooling fluid which flows within the one or more channels defined in the cooling component.
  • Ceramic can withstand high temperatures thus is not susceptible to melting due to high temperatures which are generated in the core and winding of a
  • the cooling component may be configured such that it can cooperate with a core of a transformer so that it is in thermal communication with the core of the transformer.
  • the cooling component may be
  • the cooling component comprises two or more channels defined therein.
  • the cooling component may comprise a first part and second part which are co-operable. This allows for easier construction of the cooling component.
  • the first part and second part may be co-operable to define the one or more channels.
  • the first and second part may be secured together by means of one or more fasteners, for example one or more screw members.
  • the first and second part may be held in cooperation with one another by means of electrically insulating material which is applied to an outer surface of the cooling component.
  • the first and second part may be held in co-operation with one another by means of electrically insulating material which is wound around an outer surface of the cooling component.
  • the first and second part may be held in co-operation with one another by means of windings of a transformer. In the latter two cases, advantageously, no fasteners are required.
  • the cooling component may further comprise one or more conduit members. It should be understood that the cooling component may comprise any number of conduit members.
  • the conduit members may each take any suitable shape, aspect or design.
  • the or each conduit member may be positioned within the one or more channels which are defined in the cooling component.
  • the or each conduit member may be a pipe.
  • the cooling component may comprise a U-shaped conduit member.
  • the cooling component may comprise two or more conduit members.
  • the cooling component comprises two conduit members.
  • the cooling component may further comprise an intermediate conduit member.
  • the intermediate conduit member may fluidly connect two conduit members.
  • the intermediate conduit member may fluidly connect two conduit members to form a U-shaped conduit member.
  • the or each conduit member may comprise any suitable material.
  • the or each conduit member will comprise at least one material selected from the group of materials comprising, stainless steel, copper, aluminium.
  • the or each conduit member may comprise an inner diameter of length between 6mm-20mm.
  • the or each conduit member may comprise an inner diameter of length 8mm or bigger.
  • the thickness of a wall of the or each conduit member may be between 1 .5mm-4mm.
  • the or each conduit member may comprise an inner diameter of any suitable length and the thickness of the wall of the or each conduit member may be of any suitable dimension.
  • the inner diameter dimension and the wall thickness dimension are chosen to ensure that the difference between the pressure of the cooling fluid which is inputted to the conduit member and the pressure of the cooling fluid which is outputted to the conduit member, is below a predetermined pressure difference. This ensures that the pressure loss in the cooling fluid as it flows through the conduit is not too large.
  • the cooling component may further comprise a conducting paste.
  • the conducting paste may facilitate the elimination of air pockets which may occur due uneven surfaces of the cooling component. For example, air contained within a slight depression on the surface of the cooling component will act as a thermal insulator, compromising the transfer of heat to the cooling component; the conducting paste when applied to the surface of the cooling component will fill the depression so to eliminate the air pocket.
  • the conducting paste may be provided on an outer surface of the cooling component. This will facilitate the elimination of air pockets which may occur between the cooling component and electrically insulating material which is provided on the surface of the cooling component, and thus ultimately facilitating the elimination of air pockets which exist between the cooling component and a core of a transformer which the cooling component has been arranged to cool.
  • the conducting paste maybe provided on a first part of the cooling component.
  • the conducting paste maybe provided on a second part of the cooling component.
  • the conducting paste maybe provided at an interface between the first part and second parts.
  • the conducting paste may be provided on a surface of the one or more channels.
  • the conducting paste may be provided on a surface of the one more conduit members.
  • the conducting paste may be provided at an interface between the one or more channels and the one or more conduit members.
  • the conducting paste may be Elantron PU4284 TX.
  • the cooling component may further comprise resin.
  • the resin may provide structural strength to the cooling component.
  • the resin may be impregnated into the cooling component.
  • the cooling component may further comprise a cooling fluid.
  • the cooling fluid may comprise at least one selected from the group
  • the cooling fluid may be provided within the one or more channels defined in the cooling component.
  • the cooling fluid may be provided within the one or more conduit members which are located in the one or more channels defined in the cooling component.
  • the transformer may comprise a plurality of the afore-mentioned cooling components.
  • the transformer may further comprise electrically insulating material which electrically isolates a cooling component from windings of a transformer.
  • the electrically insulating material may be provided on a surface of the cooling component.
  • the electrically insulating material may be wound around a surface of the cooling component.
  • the transformer may further comprise a winding casing which is impermeable to fluid, wherein the winding casing comprises a putty material.
  • the winding casing will prevent any leaking cooling fluid from contacting the winding.
  • the putty material may arranged to prevent any leaking fluid from damaging the windings of the transformer.
  • the putty material may comprise CW2243 compound and HY2966 hardener, which when mixed becomes a bisphonel A epoxy resin.
  • the transformer may further comprise a temperature sensor, which detects and monitors the temperature of the core. If the core reaches a temperature which exceeds a predetermined threshold temperature, the senor may emit an alarm and/or the transformer may be shut down.
  • the transformer may further comprise a detector which detects cooling fluid flowing within the cooling component.
  • the detector may be configured to emit an alarm when the cooling fluid is not flowing as desired.
  • the detector may be arranged to detect cooling fluid following out of conduit members which are positioned in the one or more channels defined in the cooling component; if the detector detects that no cooling fluid is flowing out of the conduit members, this will indicate that there is a leak somewhere in the system and the detector will operate to emit and alarm and/or shut down the operation of the transformer.
  • the transformer may further comprise resin.
  • the resin may provide structural strength to the transformer.
  • the resin may be
  • the method may further comprise the step of, providing conducting paste so as to reduce the amount of air which exists between components of the cooling component.
  • the method may further comprise the step of, providing conducting paste at an interface between the first piece comprising ceramic and second price comprising ceramic.
  • the method may further comprise the step of, providing conducting paste at an interface between walls which define the one or more channels and the at least one conduit.
  • the method may further comprise the step of providing conducting paste at a surface of the at least one conduit so as to reduce the amount air which can exist between the at least one conduit and the first and second pieces which are co-operated to define one or more channels.
  • a method of manufacturing a transformer comprising the step of, providing one or more cooling components according to any one of the aforementioned cooling components, proximate to a core and winding of a transformer, such that the one or more cooling components are in thermal communication with the core of the transformer.
  • the one or more cooling components may be arranged between the core of the transformer and windings of the transformer.
  • the method of manufacturing a transformer may further comprise the step of providing conducting paste on an outer surface of the one or more cooling components so as to reduce the amount of air which can exist between a core of the transformer and the one or more cooling components.
  • the method of manufacturing a transformer may further comprise the step of providing electrically insulating material on a surface of the one or more cooling components to electrically isolate the cooling components from windings of the transformer.
  • the electrically insulating material may be provided on a surface of the cooling component.
  • the electrically insulating material may be wound around a surface of the cooling component.
  • Figure 1 shows an exploded view of a cooling component according one embodiment of the present invention
  • Figure 2 provides a perspective view of the cooling component shown in figure 1 when assembled
  • Figure 3 provides a perspective view of a transformer according to an embodiment of the present invention
  • Figure 4 provides a perspective view of a cooling component according to a further embodiment of the present invention.
  • FIG. 1 shows an exploded view of a cooling component 1 according one embodiment of the present invention.
  • the cooling component 1 comprises a first part 3 and a second part 5 which are co-operable.
  • Each of the first part 3 and second part 5 are composed of ceramic (AI203).
  • Each of the first part 3 and second part 5 comprise grooves 7; the first part 3 and second part 5 are shown to comprise two grooves 7, however it will be understood they could comprise any number of grooves 7.
  • the cooling component 1 further comprises two conduit members in the form of pipes 1 1 a, 1 1 b.
  • the cooling component 1 may comprise any number of conduit members and that the conduit members may each take any suitable shape, aspect or design.
  • the pipes 1 1 a,1 1 b are straight and have a circular cross section.
  • Each pipe 1 1 a, 1 1 b is composed of copper, however the pipes 1 1 a,1 1 b may comprise any suitable material such as stainless steel, copper, aluminium or a mixture thereof.
  • Each pipe 1 1 a, 1 1 b comprises an inner diameter 'd' of length 8mm.
  • the thickness T' of a wall 15 of each pipe 1 1 a, 1 1 b is 4mm. It will be understood that the pipes 1 1 a,1 1 b may comprise an inner diameter of any suitable length and a wall thickness T' of any suitable dimension.
  • Figure 2 provides a perspective view of the cooling component 1 shown in figure 1 , when assembled.
  • the cooling component may further comprise a conducting paste 17; in the present example the cooling paste is Elantron PU4284 TX.
  • the conducting paste 17 is provided; at an interface 19 between the first part 3 and second part 5 of the cooling component 1 ; at an interface 21 between the pipe 1 1 a, 1 1 b and walls 23 which define the channels 13a,13b.
  • the conduction paste will eliminate any air-pockets that may exist between the first part 3 and second part 5 of the cooling component 1 and between the pipes 1 1 a, 1 1 b and walls 23 which define the channels 13a,13b; air pockets may occur, for example, due to uneven surfaces; as air is a thermal insulator, the presence of air-pockets can make the cooling component 1 less efficient at absorbing heat energy; the presence of conducting paste in the cooling component 1 of the present invention helps eliminate this problem.
  • the conducting paste 17 may also be provided on an outer- surface 25 of the cooling component 1 ; the conducting paste on the outer- surface 25 of the cooling component 1 will eliminate any air pockets that exist between the outer-surface 25 of the cooling component 1 and electrical isolation material (not shown) which is wrapped around the outer-surface 25 of the cooling component 1 to electrically isolate the cooling component 1 and to hold the first part 3 and second part 5 of the cooling component 1 in co-operation.
  • the cooling component 1 is configured to have a substantially flat surface 15 such that it can co-operate with a flat surface of a core of a transformer. This flat surface 15 will enable the cooling component 1 to abut a flat surface of a core, thus enabling the cooling component 1 to be brought into thermal communication with the core of a transformer.
  • the first part 3 and second part 5 of the cooling component 1 are held in co-operation with one another by means of electrically insulating material (not shown) e.g. NomexTM, which is wound around the an outer surface 25 of the cooling component 1 .
  • the electrically insulating material will further act to electrically isolate the cooling component 1 , thus enabling the cooling component 1 to be safely positioned close to the windings of a transformer.
  • the first part 3 and second part 5 comprise ceramic (AI203), and since ceramic is an electrical insulator material, the amount of insulating material required to electrically isolate the cooling component 1 is reduced compared to that required to electrically isolate existing cooling components.
  • the first part 3 and second part 5 may optionally be fastened together using fasteners (not shown).
  • the pipes 1 1 a,1 1 b are held within the channels 13a,13b of the cooling component 1 by frictional forces which exist between the pipes 1 1 a,1 1 b and the walls 23 which define the channels 13a,13b.
  • the cooling component 1 further comprises a resin (not shown) which is integral thereto.
  • the resin is impregnated into the cooling component 1 during the manufacturing stage.
  • the resin may provide structural strength to the cooling component 1 .
  • FIG. 1 provides a perspective view of a transformer 50 according to the present invention which comprises a six cooling components 1 a-d (only four of which are shown) of the type shown in figures 1 and 2.
  • the transformer 50 comprises three cores 51 a-c around which are wound three windings (not shown) respectively.
  • the three cores 51 a-c are held together by means of a clamp member 57.
  • the windings are encased by casings 53a-c and are therefore not visible.
  • the casings 53a-c are impermeable to fluid; thus the casings 53a-c will prevent the windings of the transformer 50 from being damaged by any leaking cooling fluid.
  • Each casing 53 may further comprise a putty material to seal the casings 53a-c at their extremities 55a, 55b.
  • the putty material may comprise CW2243 compound and HY2966 hardener. The putty material is impermeable to fluid.
  • the transformer 50 can be 3-phase or single phase application. 3- phase applications have normally 3 cores where to put the cooling elements. Single phase transformers have 2 cores to put the cooling elements.
  • the transformer 50 may take any other suitable configuration, for example the transformer 50 may comprise any number of cores, for example the transformer 50 may comprisebetweenl and 5 cores.
  • each cooling component 1 a-d Flanked on either side of each of the cores 51 a-c is a cooling component 1 a-d.
  • Each cooling component 1 a-d is arranged such that its flat surface 15 abuts a core 51 a-c so that the cooling component 1 a-d is in thermal communication with a core 51 a-c of the transformer 50.
  • Electrically insulating material e.g. NomexTM, is wound around an outer surface 25 of each of the cooling components 1 a-d; this serves to electrically isolate the cooling components 1 a-d, from the windings (not shown) of the transformer 50 (as previously discussed the insulating material also serves to hold the components of each cooling component 1 a-d in co-operation).
  • a multi-duct supply component 59 is provided, which is in fluid communication with each of the pipes 1 1 a,1 1 b in each of the six cooling components 1 a-d. Cooling fluid may be supplied to each of the pipes 1 1 a,1 1 b in each of the six cooling components 1 a-d, via the multi-duct component 59.
  • a drain component 60 is further provided which is in fluid communication with each of the pipes 1 1 a,1 1 b in each of the six cooling components 1 a-d. Cooling fluid which has flowed through the pipes 1 1 a,1 1 b in each cooling component 1 a-d may be drained out of the pipes 1 1 a,1 1 b into the drain component 60.
  • the drain component 60 directs drained cooling fluid away from the cores 51 a-c of the transformer 50.
  • the position of the multi-duct supply component 59 and the drain component 60 can be exchanged.
  • each of the cores 51 a-c will heat.
  • the cooling components 1 a-d will each operate to prevent the cores 51 a-c from overheating.
  • Cooling fluid in the form of cooling water, glycol and/or oil, for example, is supplied from a reservoir (not shown) to the multi-duct supply component 59 via a supply aperture 61 .
  • the cooling fluid is feed from the multi-duct supply component 59 to each of the pipes 1 1 a,1 1 b located within the channels 13a, 13b of each of the cooling components 1 a-d.
  • the cooling fluid will flow along the pipes 1 1 a,1 1 b of each cooling component 1 a-d.
  • heat from the cores 51 a-c of the transformer 50 is conducted through the ceramic first part 3 and second part 5 of each the cooling components 1 a-d and into the cooling fluid which flows in the pipes 1 1 a,1 1 b.
  • the heat energy is absorbed by the cooling fluid thus providing cooling of the cores 51 a-c of the transformer 50.
  • the now heated cooling fluid drains out of each of the pipes 1 1 a, 1 1 b into drain component 60; from there the heated cooling fluid directed to flow away from the cores 51 a-c so that the heat energy is removed from the transformer 50.
  • the heated cooling fluid can be collected and cooled; once cooled it can be reused to cool the cores 51 a-c of the transformer 50 during a further operation of the transformer 50.
  • the cooling component comprises ceramic this ensures that no eddy currents are be created in the cooling components 1 a-d by the magnetic field exhibited from the cores 51 a-c of the transformer 50 during operation.
  • ceramic is a good heat conductor thus is effective at conducting heat away from the cores 51 a-c of the transformer 50 to the cooling fluid which flows within the pipes 1 1 a,1 1 b. Ceramic can withstand high temperatures, thus is not susceptible to melting when the cores 51 a-c of the transformer 50 reach high temperatures during operation.
  • the transformer 50 may further comprise a temperature sensor (not shown), which detects and monitors the temperature of the cores 51 a- c. If the cores 51 a-c reaches a temperature which exceeds a predetermined threshold temperature, the temperature sensor (not shown) may emit an alarm and/or the transformer 50 may be shut down.
  • a temperature sensor not shown
  • the transformer 50 may further comprise a detector (not shown) which monitors the cooling fluid flow within the pipes 1 1 a,1 1 b of each of the cooling components 1 a-d.
  • the detector may be configured to emit an alarm when the cooling fluid is not flowing as desired.
  • the detector may be arranged to detect cooling fluid following out of the pipes 1 1 a,1 1 b into the drain component 60; if the detector detects that no cooling fluid is flowing out of the pipes 1 1 a,1 1 b into the drain component 60 this will indicate that there is a leak somewhere in the system and the detector will operate to emit and alarm and/or shut down the operation of the transformer 50.
  • FIG. 10 provides a perspective view of a cooling component 10 according to a further embodiment of the present invention.
  • the cooling component 10 has many of the same features as the cooling component 1 shown in figures 1 and 2, and like features are awarded the same reference numerals.
  • the cooling component 10 comprises an intermediate conduit member 71 which fluidly connects conduits 13a,13b.
  • the two conduits 13a,13b fluidly connected by an intermediate conduit member 71 could be replaced by a single, U-shaped, conduit member.
  • the cooling component 10 is suitable for use in a transformer, to cool the core of a transformer.
  • cooling fluid can flow along conduit 13a, as the cooling fluid flows along the conduit 13a it will absorb heat energy from a core of a transformer. Unlike the previous embodiments, in the present embodiment, the cooling fluid then enters the intermediate conduit member 71 where it is directed to flow back along conduit 13b. As the cooling fluid flows back along conduit 13b it absorbs more heat energy from the core of the transformer. Thus, in the embodiment shown in figure 4 the cooling fluid flows twice along a conduit 13a,13b before it is drained away from the transformer.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Ceramic Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Transformer Cooling (AREA)

Abstract

La présente invention concerne un élément de refroidissement comprenant une ou plusieurs canalisations définies à l'intérieur de celui-ci, l'élément de refroidissement comprenant de la céramique. L'invention concerne en outre un procédé de fabrication correspondant dudit élément de refroidissement ; un transformateur comprenant ledit élément de refroidissement ; et un procédé de fabrication correspondant dudit transformateur.
PCT/EP2011/050878 2011-01-24 2011-01-24 Élément de refroidissement pour un transformateur comprenant de la céramique WO2012100810A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/EP2011/050878 WO2012100810A1 (fr) 2011-01-24 2011-01-24 Élément de refroidissement pour un transformateur comprenant de la céramique

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2011/050878 WO2012100810A1 (fr) 2011-01-24 2011-01-24 Élément de refroidissement pour un transformateur comprenant de la céramique

Publications (1)

Publication Number Publication Date
WO2012100810A1 true WO2012100810A1 (fr) 2012-08-02

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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9160228B1 (en) 2015-02-26 2015-10-13 Crane Electronics, Inc. Integrated tri-state electromagnetic interference filter and line conditioning module
US9230726B1 (en) * 2015-02-20 2016-01-05 Crane Electronics, Inc. Transformer-based power converters with 3D printed microchannel heat sink
US9293999B1 (en) 2015-07-17 2016-03-22 Crane Electronics, Inc. Automatic enhanced self-driven synchronous rectification for power converters
US9419538B2 (en) 2011-02-24 2016-08-16 Crane Electronics, Inc. AC/DC power conversion system and method of manufacture of same
US9735566B1 (en) 2016-12-12 2017-08-15 Crane Electronics, Inc. Proactively operational over-voltage protection circuit
US9742183B1 (en) 2016-12-09 2017-08-22 Crane Electronics, Inc. Proactively operational over-voltage protection circuit
US9780635B1 (en) 2016-06-10 2017-10-03 Crane Electronics, Inc. Dynamic sharing average current mode control for active-reset and self-driven synchronous rectification for power converters
US9831768B2 (en) 2014-07-17 2017-11-28 Crane Electronics, Inc. Dynamic maneuvering configuration for multiple control modes in a unified servo system
US9888568B2 (en) 2012-02-08 2018-02-06 Crane Electronics, Inc. Multilayer electronics assembly and method for embedding electrical circuit components within a three dimensional module
US9979285B1 (en) 2017-10-17 2018-05-22 Crane Electronics, Inc. Radiation tolerant, analog latch peak current mode control for power converters
US10425080B1 (en) 2018-11-06 2019-09-24 Crane Electronics, Inc. Magnetic peak current mode control for radiation tolerant active driven synchronous power converters
WO2023099252A1 (fr) * 2021-12-02 2023-06-08 Zf Friedrichshafen Ag Dispositif de refroidissement pour refroidir une unité à refroidir, et procédé de fabrication d'un dispositif de refroidissement

Citations (5)

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Publication number Priority date Publication date Assignee Title
JPH01146624A (ja) * 1987-11-30 1989-06-08 Kyocera Corp セラミック熱交換器の製造方法
JP2001007265A (ja) * 1999-06-22 2001-01-12 Sentan Zairyo:Kk 冷却装置付基板及びその製法
US20060196050A1 (en) * 2005-03-01 2006-09-07 Seiko Epson Corporation Manufacturing method for cooling unit, cooling unit, optical device, and projector
US20070044947A1 (en) * 2005-08-25 2007-03-01 Sgl Carbon Ag Heat exchanger block
WO2010057535A1 (fr) * 2008-11-24 2010-05-27 Abb Technology Ag Dispositif d'induction

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01146624A (ja) * 1987-11-30 1989-06-08 Kyocera Corp セラミック熱交換器の製造方法
JP2001007265A (ja) * 1999-06-22 2001-01-12 Sentan Zairyo:Kk 冷却装置付基板及びその製法
US20060196050A1 (en) * 2005-03-01 2006-09-07 Seiko Epson Corporation Manufacturing method for cooling unit, cooling unit, optical device, and projector
US20070044947A1 (en) * 2005-08-25 2007-03-01 Sgl Carbon Ag Heat exchanger block
WO2010057535A1 (fr) * 2008-11-24 2010-05-27 Abb Technology Ag Dispositif d'induction

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9419538B2 (en) 2011-02-24 2016-08-16 Crane Electronics, Inc. AC/DC power conversion system and method of manufacture of same
US9888568B2 (en) 2012-02-08 2018-02-06 Crane Electronics, Inc. Multilayer electronics assembly and method for embedding electrical circuit components within a three dimensional module
US11172572B2 (en) 2012-02-08 2021-11-09 Crane Electronics, Inc. Multilayer electronics assembly and method for embedding electrical circuit components within a three dimensional module
US9831768B2 (en) 2014-07-17 2017-11-28 Crane Electronics, Inc. Dynamic maneuvering configuration for multiple control modes in a unified servo system
US9230726B1 (en) * 2015-02-20 2016-01-05 Crane Electronics, Inc. Transformer-based power converters with 3D printed microchannel heat sink
US9160228B1 (en) 2015-02-26 2015-10-13 Crane Electronics, Inc. Integrated tri-state electromagnetic interference filter and line conditioning module
US9293999B1 (en) 2015-07-17 2016-03-22 Crane Electronics, Inc. Automatic enhanced self-driven synchronous rectification for power converters
US9780635B1 (en) 2016-06-10 2017-10-03 Crane Electronics, Inc. Dynamic sharing average current mode control for active-reset and self-driven synchronous rectification for power converters
US9866100B2 (en) 2016-06-10 2018-01-09 Crane Electronics, Inc. Dynamic sharing average current mode control for active-reset and self-driven synchronous rectification for power converters
US9742183B1 (en) 2016-12-09 2017-08-22 Crane Electronics, Inc. Proactively operational over-voltage protection circuit
US9735566B1 (en) 2016-12-12 2017-08-15 Crane Electronics, Inc. Proactively operational over-voltage protection circuit
US9979285B1 (en) 2017-10-17 2018-05-22 Crane Electronics, Inc. Radiation tolerant, analog latch peak current mode control for power converters
US10425080B1 (en) 2018-11-06 2019-09-24 Crane Electronics, Inc. Magnetic peak current mode control for radiation tolerant active driven synchronous power converters
WO2023099252A1 (fr) * 2021-12-02 2023-06-08 Zf Friedrichshafen Ag Dispositif de refroidissement pour refroidir une unité à refroidir, et procédé de fabrication d'un dispositif de refroidissement

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