WO2014103298A1 - Bobine de réactance - Google Patents

Bobine de réactance Download PDF

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Publication number
WO2014103298A1
WO2014103298A1 PCT/JP2013/007580 JP2013007580W WO2014103298A1 WO 2014103298 A1 WO2014103298 A1 WO 2014103298A1 JP 2013007580 W JP2013007580 W JP 2013007580W WO 2014103298 A1 WO2014103298 A1 WO 2014103298A1
Authority
WO
WIPO (PCT)
Prior art keywords
core
reactor
winding
cooling member
cooling
Prior art date
Application number
PCT/JP2013/007580
Other languages
English (en)
Japanese (ja)
Inventor
智彰 田宮
正志 澤田
Original Assignee
川崎重工業株式会社
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 川崎重工業株式会社 filed Critical 川崎重工業株式会社
Publication of WO2014103298A1 publication Critical patent/WO2014103298A1/fr

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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
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/2876—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
    • H01F27/08—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
    • H01F3/00—Cores, Yokes, or armatures
    • H01F3/10—Composite arrangements of magnetic circuits
    • H01F3/14—Constrictions; Gaps, e.g. air-gaps

Definitions

  • the present invention relates to a reactor cooling structure having a winding wound in a coil shape around a magnetic core having a gap.
  • the reactor has a gap in the core to adjust the inductance.
  • the leakage magnetic flux in the gap is linked to the neighboring winding, and an eddy current is generated in the winding. For this reason, it is known that the winding near the gap has a large copper loss and causes local heat generation. Winding heat can shorten the life of the equipment due to deterioration and, in some cases, cause serious accidents due to burning. Therefore, in the design of the reactor, it is required to efficiently cool the winding near the gap.
  • This invention was made in order to solve the above problems, and it aims at providing the reactor which can suppress a temperature rise efficiently.
  • a reactor according to an aspect of the present invention includes a magnetic core having a gap, a winding wound around the core in a coil shape, and a portion of the core including the gap.
  • a plate-like cooling member disposed between the windings and provided with a coolant channel therein.
  • the plate-like cooling member (heat sink) in which the refrigerant flow path is provided directly cools the windings in the vicinity of the gap where the temperature rise is large, so that the reactor can be efficiently cooled. Furthermore, by selecting the flow path and flow rate of the refrigerant, it is possible to achieve an optimal heat dissipation design that reduces heat generation and increases heat dissipation, so that the reactor can be downsized.
  • the refrigerant flow path may be formed along the gap of the core.
  • the cooling member may be a plate-like member having nonmagnetic properties and thermal conductivity.
  • the plate-like cooling member has nonmagnetic and thermal conductivity, a shielding effect against the leakage magnetic flux in the gap can be obtained, and the temperature rise of the winding can be suppressed.
  • copper or aluminum may be used as the non-magnetic and thermally conductive member.
  • An insulator may be further provided between the winding and the cooling member.
  • the cooling member may be arranged so that both ends in the circumferential direction of the core do not contact each other.
  • FIG. 1 is a perspective view of a reactor according to Embodiment 1 of the present invention.
  • FIG. 2 is a cross-sectional view of the reactor of FIG. 1 along the line AA ′.
  • 3 is a cross-sectional view of the reactor of FIG. 1 taken along the line BB ′.
  • FIG. 4 is an exploded perspective view of a cooling member provided in the reactor of FIG.
  • FIG. 5 is an enlarged partial cross-sectional view of the vicinity of the gap of the reactor of FIG.
  • FIG. 6 is a first cross-sectional view of the reactor according to the second embodiment of the present invention.
  • FIG. 7 is a second cross-sectional view of the reactor according to the second embodiment of the present invention.
  • FIG. 8 is a cross-sectional view of a reactor according to a modification of the second embodiment of the present invention.
  • FIG. 1 is a perspective view of a reactor 1 according to Embodiment 1 of the present invention.
  • a reactor 1 includes a magnetic core 2, a winding 3 wound around the core 2 in a coil shape, and a plate-like cooling member 4 disposed between the core 2 and the winding 3. And comprising.
  • Use of reactor 1 according to the present embodiment is not particularly limited.
  • the reactor 1 is used for an input / output filter of an inverter, for example.
  • winding 3 which comprise the reactor 1 do not need to use the member of a special specification, and can use a well-known thing.
  • FIG. 2 is a cross-sectional view taken along line AA ′ of reactor 1 in FIG.
  • the core 2 of the iron core that is a magnetic body has a gap 5.
  • the core 2 penetrates the inside of the coiled winding 3.
  • four gaps 5 are formed in the core 2.
  • the winding 3 is disposed in a portion including the gap 5 of the core 2, and the plate-like cooling member 4 provided with a flow path 9 between the portion including the gap 5 of the core 2 and the winding 3. Is arranged.
  • FIG. 3 is a cross-sectional view of the reactor of FIG. 1 taken along the line BB ′.
  • the cooling member 4 provided with the flow path 9 is disposed around the core 2 constituting the magnetic circuit, and the winding 3 is disposed outside thereof. Needless to say, the wires (electric wires) constituting the winding 3 are themselves covered with an insulating layer.
  • four cooling members 4 are arranged in four directions around the core 2.
  • the cooling member 4 is disposed so that both ends in the circumferential direction of the core 2 do not contact each other. That is, the four cooling members 4 need to be arranged so that at least the ends in the circumferential direction of the core 2 do not contact each other. This is to prevent the circulating current from flowing through the cooling member 4 induced by the magnetic flux passing through the core 2.
  • the four cooling members are arranged so that both ends in the circumferential direction of the core 2 do not contact the adjacent cooling members 4.
  • FIG. 4 is an exploded perspective view of the cooling member 4 provided in the reactor 1.
  • the cooling member 4 is provided with a refrigerant flow path 9 therein.
  • the cooling member 4 is configured by a plate-shaped water-cooled heat sink.
  • the cooling member 4 has a three-layer structure in which three plate-like members are overlapped.
  • the cooling member 4 includes a flat plate 6, a plate 7 in which a groove (flow path) 9 through which a refrigerant passes, and a supply port 10 including through holes formed in upper and lower corners on one side. And a flat plate 8 having a discharge port 11.
  • the plates 6 to 8 are plate-like members having nonmagnetic and thermal conductivity.
  • copper is used as a member having nonmagnetic properties and thermal conductivity.
  • the groove (flow path) 9 of the plate 7 is formed so as to meander in the plate plane of the cooling member 4 in the lateral direction along the gap 5 of the core 2 so that the refrigerant passes through the flow path. Yes.
  • coolant that is liquid for example, antifreeze
  • the refrigerant in the cooling member 4 is supplied from an external pump unit (not shown) to the cooling member 4 through the supply port 10, and after exchanging heat in the cooling member 4, the refrigerant is drained from the discharge port 11 to be pump unit. Return to. Thus, the refrigerant circulates through the flow path 9 in the cooling member 4.
  • this pump unit may be used in common with other water cooling units, for example, a cooling unit for cooling the IGBT used in the inverter.
  • FIG. 5 is an enlarged partial sectional view of the vicinity of the gap 5 of the reactor 1 in FIG. Arrows indicate magnetic flux. As shown in FIG. 5, in the vicinity of the gap 5 of the core 2, a leakage magnetic flux (arrow in the figure) is generated outside the gap 5. As a result, an eddy current is generated in the winding 3. When the loss due to the eddy current in the winding 3 increases, the efficiency of the reactor decreases and the temperature of the winding 3 during operation becomes high.
  • the coil 3 in the vicinity of the gap 5 having a large temperature rise is directly cooled by the plate-like cooling member 4 in which the refrigerant flow path 9 is provided.
  • winding 3 can be cooled efficiently simultaneously, and by extension, the reactor 1 can be cooled efficiently.
  • the plate-like cooling member 4 has non-magnetic and thermal conductivity, a shielding effect against the leakage magnetic flux in the gap can be obtained, and the temperature rise of the winding can be suppressed.
  • the cooling member 4 (water-cooled heat sink) 4 in each direction is a conductor, when these are integrated, there is a concern about an increase in loss due to eddy current and a deterioration in the characteristics of the reactor 1. Therefore, in the present embodiment, the cooling member 4 (water-cooled heat sink) is arranged in four directions around the core 2 but is not integrated. That is, the four cooling members 4 as a whole are arranged so that both ends in the circumferential direction of the core 2 are not in contact with each other, and both ends in the circumferential direction of the core 2 are in contact with the adjacent cooling members 4. Arranged not to. Thereby, it is possible to prevent the circulating current from flowing to the cooling member due to the magnetic flux of the core.
  • the heat sinks When integrating the cooling member 4 (water-cooled heat sink), the heat sinks may be integrated after being insulated.
  • a heat sink is inserted between the core and the winding, and heat exchange is performed with the refrigerant pipe connected to the end of the heat sink.
  • the conventional reactor is common to the present embodiment in that the liquid is used as the refrigerant and the refrigerant is circulated.
  • the cooling member 4 in which the refrigerant flow path 9 is provided is inserted between the core 2 and the winding 3, and the cooling member 4 generates heat. It is provided in the vicinity of the core gap 5 which is a portion.
  • the cooling capacity is greatly reduced.
  • the heat radiation plate and the refrigerant pipe of the conventional example are integrated as the cooling member 4 in this embodiment, the coil and the cooling member 4 can be brought into close contact with each other, and a sufficient cooling effect is obtained. be able to. Since there is no significant change in the structure with respect to the conventional reactor, an increase in new production costs can be suppressed.
  • FIG. 1 is a cross-sectional views of the reactor 1 according to Embodiment 2 of the present invention.
  • the reactor 1 of the second embodiment is different from the reactor 1 of the first embodiment in that it further includes an insulating member 12 disposed between the winding 3 and the cooling member 4.
  • the insulating member 12 only needs to be an insulator having an insulating property against a high voltage.
  • an aramid fiber sheet is used.
  • the plate constituting the cooling member 4 of the reactor 1 is a conductor, there is a possibility that a short circuit occurs between the plate and the winding at a high voltage. Therefore, in the present embodiment, in addition to the effect of the first embodiment, the insulation between the winding 3 and the cooling member 4 is reinforced, so that a high voltage is applied to the reactor 1. In addition, the possibility of a short circuit occurring between the cooling member 4 and the winding 3 that are conductors can be suppressed.
  • the use of a very thin member for the insulating member 12 can minimize the influence on heat conduction.
  • the reactor 1 of Embodiment 2 of this invention was set as the structure which arrange
  • the use of a very thin member for the insulating member 12 can minimize the influence on heat conduction.
  • the core 2 of the iron core which is a magnetic material, includes four gaps 5, but the present invention is not limited to this.
  • the present embodiment since the winding can be directly cooled by the cooling member, there can be enough room for the temperature rise around one gap, and therefore the number of gaps 5 can be further reduced. Thus, for example, there may be two gaps. Thereby, the processing cost of a core gap can be held down.
  • copper is used as a member having nonmagnetic properties and thermal conductivity.
  • other materials such as aluminum may be used.
  • the groove (flow path) 9 of the plate 7 is formed so as to meander in the plate plane of the cooling member 4 along the gap of the core. It is not limited to a simple configuration.
  • the plate 7 only needs to have a flow path formed so that the plate 7 is cooled substantially uniformly by the refrigerant.
  • the plate 7 may be formed to meander in the vertical direction, or may include a plurality of flow paths.
  • the flow path through which the refrigerant flows is formed by sandwiching one plate with grooves between two plates, but is not limited to such a configuration.
  • a refrigerant pipe may be arranged inside the plate.
  • the cooling member 4 is installed on the four sides of the core 2 (cross-sectional view is square), but if it is between the portion including the gap 5 of the core 2 and the winding 3, for example,
  • the core 2 may be installed on one side, two sides, or three sides.
  • the coolant flowing in the flow path of the cooling member is liquid cooling water (for example, antifreeze liquid).
  • the present invention is not limited to this, and the coolant is a mixture of liquid and gas. There may be.
  • the present invention can be used for a reactor that performs a cooling system (for example, a water cooling system) using a liquid or a mixture of liquid and gas as a refrigerant.
  • a cooling system for example, a water cooling system

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Transformer Cooling (AREA)
  • Coils Of Transformers For General Uses (AREA)

Abstract

L'invention concerne une bobine de réactance (1) comprenant : un noyau magnétique (2) qui comporte un interstice (5) ; un enroulement (3) qui entoure le noyau (2) de manière à former une bobine ; ainsi qu'un élément de refroidissement (4) en forme de plaque qui est situé entre l'enroulement (3) et une partie du noyau (2) incluant un interstice (5), et qui présente à l'intérieur un trajet d'écoulement (9) destiné à un liquide de refroidissement.
PCT/JP2013/007580 2012-12-27 2013-12-25 Bobine de réactance WO2014103298A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2012283943A JP6055306B2 (ja) 2012-12-27 2012-12-27 リアクトル
JP2012-283943 2012-12-27

Publications (1)

Publication Number Publication Date
WO2014103298A1 true WO2014103298A1 (fr) 2014-07-03

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2013/007580 WO2014103298A1 (fr) 2012-12-27 2013-12-25 Bobine de réactance

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JP (1) JP6055306B2 (fr)
WO (1) WO2014103298A1 (fr)

Cited By (16)

* 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
WO2016080131A1 (fr) * 2014-11-17 2016-05-26 株式会社 豊田自動織機 Appareil à induction
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
WO2018033451A1 (fr) * 2016-08-18 2018-02-22 Manfred Schmelzer Gmbh Bobine de puissance symétrique à multiples phases
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
WO2020101905A1 (fr) * 2018-11-12 2020-05-22 Carrier Corporation Transformateur refroidi pour dispositif de stockage d'énergie
CN112997263A (zh) * 2018-11-15 2021-06-18 三菱电机株式会社 功率转换器
WO2024047739A1 (fr) * 2022-08-30 2024-03-07 スミダコーポレーション株式会社 Élément bobine pour dispositif de bobine électrique, dispositif de bobine électrique et procédé d'assemblage pour dispositif de bobine électrique

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* Cited by examiner, † Cited by third party
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JP2016096314A (ja) * 2014-11-17 2016-05-26 株式会社豊田自動織機 電子機器
JP6317306B2 (ja) * 2015-10-22 2018-04-25 東芝産業機器システム株式会社 水冷鉄心
CN105761904B (zh) * 2016-02-25 2017-03-08 胡长磊 一种具有冷却结构的变压器
TWI620210B (zh) * 2016-08-22 2018-04-01 致茂電子股份有限公司 嵌埋熱傳元件之變壓器
CN106531424B (zh) * 2016-12-30 2018-08-28 北京金风科创风电设备有限公司 水冷式空心电抗器、电力变换装置和风力发电机组

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JPS59109122U (ja) * 1983-01-12 1984-07-23 神鋼電機株式会社 中周波可飽和リアクトル
JP2004135465A (ja) * 2002-10-11 2004-04-30 Toyota Motor Corp 電圧変換装置、および電圧変換の制御をコンピュータに実行させるためのプログラムを記録したコンピュータ読取り可能な記録媒体
JP2008186904A (ja) * 2007-01-29 2008-08-14 Daikin Ind Ltd リアクトルおよび空調機
JP2009188034A (ja) * 2008-02-04 2009-08-20 Sumitomo Electric Ind Ltd リアクトルおよびその取付構造
JP2012089838A (ja) * 2010-10-19 2012-05-10 General Electric Co <Ge> 高周波数及び大出力用途向けの間接冷却を有する液体冷却式磁気構成要素

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JP2006312422A (ja) * 2005-05-09 2006-11-16 Sumitomo Electric Ind Ltd 水素燃料車
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Publication number Priority date Publication date Assignee Title
JPS59109122U (ja) * 1983-01-12 1984-07-23 神鋼電機株式会社 中周波可飽和リアクトル
JP2004135465A (ja) * 2002-10-11 2004-04-30 Toyota Motor Corp 電圧変換装置、および電圧変換の制御をコンピュータに実行させるためのプログラムを記録したコンピュータ読取り可能な記録媒体
JP2008186904A (ja) * 2007-01-29 2008-08-14 Daikin Ind Ltd リアクトルおよび空調機
JP2009188034A (ja) * 2008-02-04 2009-08-20 Sumitomo Electric Ind Ltd リアクトルおよびその取付構造
JP2012089838A (ja) * 2010-10-19 2012-05-10 General Electric Co <Ge> 高周波数及び大出力用途向けの間接冷却を有する液体冷却式磁気構成要素

Cited By (18)

* 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
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
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
US9831768B2 (en) 2014-07-17 2017-11-28 Crane Electronics, Inc. Dynamic maneuvering configuration for multiple control modes in a unified servo system
WO2016080131A1 (fr) * 2014-11-17 2016-05-26 株式会社 豊田自動織機 Appareil à induction
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
WO2018033451A1 (fr) * 2016-08-18 2018-02-22 Manfred Schmelzer Gmbh Bobine de puissance symétrique à multiples phases
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
WO2020101905A1 (fr) * 2018-11-12 2020-05-22 Carrier Corporation Transformateur refroidi pour dispositif de stockage d'énergie
CN112997263A (zh) * 2018-11-15 2021-06-18 三菱电机株式会社 功率转换器
WO2024047739A1 (fr) * 2022-08-30 2024-03-07 スミダコーポレーション株式会社 Élément bobine pour dispositif de bobine électrique, dispositif de bobine électrique et procédé d'assemblage pour dispositif de bobine électrique

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JP6055306B2 (ja) 2016-12-27
JP2014127610A (ja) 2014-07-07

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