JP2003338414A - Reactor - Google Patents
ReactorInfo
- Publication number
- JP2003338414A JP2003338414A JP2002144871A JP2002144871A JP2003338414A JP 2003338414 A JP2003338414 A JP 2003338414A JP 2002144871 A JP2002144871 A JP 2002144871A JP 2002144871 A JP2002144871 A JP 2002144871A JP 2003338414 A JP2003338414 A JP 2003338414A
- Authority
- JP
- Japan
- Prior art keywords
- permanent magnet
- core
- magnetic
- reactor
- magnetic flux
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
-
- 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
- H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
- H01F27/38—Auxiliary core members; Auxiliary coils or windings
-
- 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
- H01F2003/103—Magnetic circuits with permanent magnets
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、永久磁石を用い
て磁気バイアスを与えるリアクトルに関するものであ
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reactor for applying a magnetic bias using a permanent magnet.
【０００２】[0002]
【従来の技術】永久磁石を用いて磁気バイアスを与える
リアクトルとして、特開平８−３１６０４９号公報に示
されているリアクトルがあり、図３にその構成を示す。
この従来のリアクトルは、Ｔ型コア１２１とＣ型コア１
１１によってコア１１０を構成している。Ｔ型コア１２
１の両底部１２１ｂとＣ型コア１１１の両側面脚１１１
ｅとの間に磁気的空隙１０５を形成しており、Ｔ型コア
１２１の脚１２１ｃにコイル１０３を巻回している。Ｔ
型コア１２１の両側面に、永久磁石１０４を設け、永久
磁石１０４の背面に、永久磁石１０４の外側面とＴ型コ
ア１２１の外側面をブリッジするＬ形のバックヨーク１
０６を設けている。永久磁石１０４の作る磁束φｍはバ
ックヨーク１０６から永久磁石１０４を通り、コイル１
０３の作る磁束φｅと磁気的空隙１０５でバイアスす
る。2. Description of the Related Art As a reactor for applying a magnetic bias using a permanent magnet, there is a reactor disclosed in Japanese Patent Laid-Open No. 8-316049, and its configuration is shown in FIG.
This conventional reactor has a T-shaped core 121 and a C-shaped core 1
The core 110 is composed of 11. T-shaped core 12
1. Both bottom parts 121b and both side legs 111 of the C-shaped core 111
A magnetic air gap 105 is formed between the coil 103 and e, and the coil 103 is wound around the leg 121c of the T-shaped core 121. T
The L-shaped back yoke 1 is provided with permanent magnets 104 on both side surfaces of the die core 121, and the back surface of the permanent magnet 104 bridges the outer surface of the permanent magnet 104 and the outer surface of the T-shaped core 121.
06 is provided. The magnetic flux φm created by the permanent magnet 104 passes from the back yoke 106 through the permanent magnet 104, and
Bias is made by the magnetic flux φe created by 03 and the magnetic gap 105.
【０００３】このようにこの従来技術においては、コア
の磁気的空隙１０５の側面に磁気バイアス用の永久磁石
１０４とバックヨーク１０６とが磁気的に直列に密着し
て設けられており、コアに巻かれたコイル１０３の作る
磁束φｅと永久磁石１０４の作る磁束φｍが互いに逆方
向になるように永久磁石１０４が着磁されている。As described above, in this prior art, the permanent magnet 104 for magnetic bias and the back yoke 106 are magnetically and closely attached in series on the side surface of the magnetic gap 105 of the core and wound around the core. The permanent magnet 104 is magnetized so that the magnetic flux φe generated by the coil 103 and the magnetic flux φm generated by the permanent magnet 104 are in opposite directions.
【０００４】この従来の技術においては、永久磁石１０
４の作るバイアス磁束φｍとコイル１０３の作る磁束φ
ｅが打ち消し合うため、コア内部の磁束が減少し、コア
の磁気飽和を抑制することができる。また、コイル１０
３の作る磁束が永久磁石１０４内を流れにくいので、渦
電流損も減少し、永久磁石１０４も減磁しにくいという
特徴がある。In this conventional technique, the permanent magnet 10 is used.
Bias magnetic flux φm created by 4 and magnetic flux φ created by coil 103
Since e cancel each other, the magnetic flux inside the core decreases, and the magnetic saturation of the core can be suppressed. Also, the coil 10
Since the magnetic flux generated by 3 does not easily flow in the permanent magnet 104, the eddy current loss is also reduced, and the permanent magnet 104 is also difficult to demagnetize.
【０００５】[0005]
【発明が解決しようとする課題】しかしながら、このよ
うな従来の永久磁石付きリアクトルにあっては、永久磁
石１０４がコア１１０に密着して設けられているため、
鉄損等により生じたコア１１０の発熱や、銅損等により
生じたコイル１０３の発熱が永久磁石１０４に伝わり、
永久磁石１０４の温度も上昇する。However, in such a conventional reactor with a permanent magnet, since the permanent magnet 104 is provided in close contact with the core 110,
Heat generation of the core 110 caused by iron loss or the like, and heat generation of the coil 103 caused by copper loss or the like are transmitted to the permanent magnet 104,
The temperature of the permanent magnet 104 also rises.
【０００６】一般的に永久磁石は代表的な磁気特性であ
る減磁曲線が温度特性を有しており、特に、フェライト
磁石や希土類磁石は負の温度係数を有している。図４
に、参考として、NEOMAX−37H（住友特殊金属（株）製
のＮｄ磁石の商品名）の減磁曲線の温度変化を示す。NE
OMAX−37Hのようにエネルギー密度および発生磁束密度
が高い永久磁石にあっては、温度上昇による性能劣化が
極端であり、図４の減磁曲線に示すように、磁化力（発
生磁力）が温度上昇に応じて急激に減少するという性質
がある。Generally, a permanent magnet has a temperature characteristic as a demagnetization curve which is a typical magnetic characteristic, and in particular, a ferrite magnet and a rare earth magnet have a negative temperature coefficient. Figure 4
For reference, the temperature change of the demagnetization curve of NEOMAX-37H (trade name of Nd magnet manufactured by Sumitomo Special Metals Co., Ltd.) is shown. NE
In the case of permanent magnets with high energy density and generated magnetic flux density such as OMAX-37H, the performance deterioration due to temperature rise is extreme, and as shown by the demagnetization curve in Fig. 4, the magnetizing force (generated magnetic force) changes with temperature. It has the property of rapidly decreasing as it rises.
【０００７】通常、リアクトルにおいては１８０°Ｃの
Ｈ種絶縁まで用いられるため、永久磁石がコアに密着し
て設けられている場合には、永久磁石の表面も熱伝導に
より１００°Ｃ以上になる。Normally, up to 180 ° C. class H insulation is used in the reactor, so when the permanent magnet is provided in close contact with the core, the surface of the permanent magnet also becomes 100 ° C. or higher due to heat conduction. .
【０００８】このように、上記従来のリアクトルにおい
ては、永久磁石の温度上昇による発生磁力の減少によ
り、永久磁石による磁気バイアス量が減少し、コアの磁
気飽和が良好に抑制できなくなって所望のＬ−Ｉ特性を
得られなくなるという問題があった。As described above, in the conventional reactor described above, the magnetic bias generated by the permanent magnet decreases due to the decrease in the magnetic force generated by the temperature rise of the permanent magnet, and the magnetic saturation of the core cannot be suppressed well, so that the desired L There is a problem that the -I characteristic cannot be obtained.
【０００９】さらに、永久磁石の作る磁束を調節できる
ような磁気空隙が設けられていないため、コイルの作る
磁束を最適に打ち消すように永久磁石の作るバイアス磁
束を調節できず、結果としてリアクトルのＬ−Ｉ特性を
所望の値にすることができないという問題があった。Further, since the magnetic gap for adjusting the magnetic flux produced by the permanent magnet is not provided, the bias magnetic flux produced by the permanent magnet cannot be adjusted so as to optimally cancel the magnetic flux produced by the coil, resulting in the reactor L There is a problem that the −I characteristic cannot be set to a desired value.
【００１０】この発明は上記に鑑みてなされたもので、
コアからの熱に起因した永久磁石の温度上昇を効果的に
防止でき、永久磁石として温度特性が悪いものが使用さ
れるような状況下であっても温度上昇による特性劣化を
防止できるリアクトルを得ることを目的とする。The present invention has been made in view of the above,
To obtain a reactor that can effectively prevent the temperature rise of the permanent magnet due to the heat from the core, and can prevent the characteristic deterioration due to the temperature rise even in the situation where a permanent magnet having bad temperature characteristics is used. The purpose is to
【００１１】[0011]
【課題を解決するための手段】上記目的を達成するた
め、この発明にかかるリアクトルは、コイルが巻回され
たコアに永久磁石を配設し、この永久磁石を用いて磁気
バイアスを与えるリアクトルにおいて、永久磁石とコア
の間に磁気的空隙を設け、この磁気的空隙に熱が伝達し
にくい断熱絶縁体シートを介在させることを特徴とす
る。In order to achieve the above object, a reactor according to the present invention is a reactor in which a permanent magnet is arranged in a core around which a coil is wound and a magnetic bias is given by using this permanent magnet. A magnetic gap is provided between the permanent magnet and the core, and a heat insulating insulator sheet through which heat is hard to be transmitted is interposed in the magnetic gap.
【００１２】この発明によれば、永久磁石とコアの間に
磁気的空隙を設け、この磁気的空隙に断熱絶縁体シート
を設けるようにしており、永久磁石の温度上昇を抑制し
て特性劣化を少なくすることができる。According to the present invention, the magnetic gap is provided between the permanent magnet and the core, and the heat insulating insulator sheet is provided in the magnetic gap. Can be reduced.
【００１３】つぎの発明にかかるリアクトルは、上記の
発明において、前記断熱絶縁体シートの厚みを可変する
ことによりバイアス磁束を調節することを特徴とする。The reactor according to the next invention is characterized in that, in the above invention, the bias magnetic flux is adjusted by varying the thickness of the heat insulating insulator sheet.
【００１４】この発明によれば、磁気的空隙に配設され
る断熱シートの厚みを変えることにより、バイアス磁束
を調節するようにしており、これによりコイルの作る磁
束を殆ど変えずに永久磁石の作るバイアス磁束だけを調
節することができる。According to the present invention, the bias magnetic flux is adjusted by changing the thickness of the heat insulating sheet arranged in the magnetic air gap, whereby the magnetic flux produced by the coil is hardly changed. Only the bias magnetic flux that is created can be adjusted.
【００１５】[0015]
【発明の実施の形態】以下に添付図面を参照して、この
発明にかかるリアクトルの好適な実施の形態を詳細に説
明する。BEST MODE FOR CARRYING OUT THE INVENTION Preferred embodiments of a reactor according to the present invention will be described in detail below with reference to the accompanying drawings.
【００１６】図１はこの発明にかかるリアクトルの実施
の形態を示すものである。このリアクトルは、Ｔ形コア
１およびＣ形コア５によってＴＣ形のコア１５を構成し
ている。FIG. 1 shows an embodiment of a reactor according to the present invention. In this reactor, a T-shaped core 1 and a C-shaped core 5 constitute a TC-shaped core 15.
【００１７】Ｔ形コア１の脚部２にはコイル３を巻回し
ている。Ｔ形コア１の底部４とＣ形コア５の両脚６の間
に磁気的空隙７を形成し、この磁気的空隙７に絶縁体８
を介在させている。A coil 3 is wound around the leg portion 2 of the T-shaped core 1. A magnetic gap 7 is formed between the bottom portion 4 of the T-shaped core 1 and both legs 6 of the C-shaped core 5, and an insulator 8 is formed in the magnetic gap 7.
Is intervening.
【００１８】Ｔ形コア１およびＣ形コア５の両脚６との
間の磁気的空隙７の付近の両外側面には、磁気的空隙１
０を介してバイアス磁束を発生する板状の一対の永久磁
石９を配設している。これら一対の永久磁石９は、板の
長手方向および板厚方向の各々に片側２極となるように
着磁し、対向するもの同士が同極性となるようにしてい
る。磁気的空隙１０には、断熱性の良い絶縁体である断
熱絶縁体シート１１を介在させている。永久磁石９の背
面には、磁性体材料から成る一対の平板状のバックヨー
ク１２を貼付してある。The magnetic gap 1 is formed on both outer side surfaces near the magnetic gap 7 between the legs 6 of the T-shaped core 1 and the C-shaped core 5.
A pair of plate-shaped permanent magnets 9 that generate a bias magnetic flux via 0 are arranged. The pair of permanent magnets 9 are magnetized so as to have two poles on one side in each of the longitudinal direction and the thickness direction of the plate, and the opposing magnets have the same polarity. A heat insulating insulator sheet 11 which is an insulator having a good heat insulating property is interposed in the magnetic gap 10. On the back surface of the permanent magnet 9, a pair of flat plate-shaped back yokes 12 made of a magnetic material are attached.
【００１９】この実施の形態においては、磁気的空隙１
０およびこの磁気的空隙１０に挿入した断熱絶縁体シー
ト１１により、鉄損等により生じたＴ形コア１およびＣ
形コア５の発熱や、銅損等により生じたコイル３の発熱
が永久磁石９に伝わることを防いでおり、先の図４に示
したような温度特性を有した減磁特性を持つ永久磁石９
が温度上昇により性能劣化することを抑制し、リアクト
ルを所望のＬ−Ｉ特性に維持することができる。In this embodiment, the magnetic gap 1
0 and the heat insulating insulator sheet 11 inserted in the magnetic gap 10 cause T-shaped cores 1 and C generated by iron loss or the like.
The heat generated by the core 5 and the heat generated by the coil 3 caused by copper loss, etc. are prevented from being transmitted to the permanent magnet 9, and the permanent magnet has the demagnetization characteristic having the temperature characteristic as shown in FIG. 9
It is possible to suppress the performance deterioration due to the temperature rise and maintain the reactor with a desired L-I characteristic.
【００２０】さらに、この実施の形態の構造によれば、
磁気的空隙１０の間隔を調整することにより、すなわち
断熱絶縁体シート１１の厚み変えることにより、コイル
３の作る磁束１３を殆ど変えずに永久磁石９の作るバイ
アス磁束１４だけを支配的に調節することができる。Further, according to the structure of this embodiment,
By adjusting the spacing of the magnetic gaps 10, that is, by changing the thickness of the heat insulating insulator sheet 11, the magnetic flux 13 produced by the coil 3 is hardly changed and only the bias magnetic flux 14 produced by the permanent magnet 9 is predominantly adjusted. be able to.
【００２１】従って、コイル３の作るコイル磁束１３を
最適に打ち消すようにリアクトルのＬ−Ｉ特性を容易に
調整することができる。図２は、磁気的空隙１０の間隔
を変えたときのリアクトルのＬ−Ｉ特性を示すものであ
り、磁気的空隙１０を広くすればＡの方向にＬ−Ｉ曲線
をシフトさせることができ、また磁気的空隙１０を狭く
すればＣの方向にＬ−Ｉ曲線をシフトできることが示さ
れている。Therefore, the L-I characteristic of the reactor can be easily adjusted so as to optimally cancel the coil magnetic flux 13 created by the coil 3. FIG. 2 shows the L-I characteristics of the reactor when the spacing of the magnetic gap 10 is changed. If the magnetic gap 10 is widened, the L-I curve can be shifted in the A direction. It is also shown that the LI curve can be shifted in the C direction by narrowing the magnetic gap 10.
【００２２】ここで、磁気的空隙１０を狭くすると、電
流大の領域でのＬ値を大きく保つことができるが、余り
狭くしすぎると電流が小さい領域でのＬ値が減少する状
態に至ることがある。従って、磁気的空隙１０を調整し
て、所望のＬ−Ｉ特性に設定すればよい。Here, if the magnetic gap 10 is narrowed, the L value in the large current region can be kept large, but if it is made too narrow, the L value will decrease in the small current region. There is. Therefore, the magnetic gap 10 may be adjusted to set the desired L-I characteristic.
【００２３】このように本実施の形態によれば、永久磁
石９とコア１５の間に磁気的空隙１０を設け、この磁気
的空隙１０に断熱絶縁体シート１１を設けるようにして
いるので、永久磁石９の温度上昇が抑制されて特性が劣
化し難くなる。つまり、コア１５に発生した熱が永久磁
石９へ伝わることを断熱部材としての断熱絶縁体シート
１１により抑制されるから、コア１５からの熱に起因し
た永久磁石９の温度上昇を効果的に防止でき、特に、永
久磁石９として温度特性が悪いものが使用されるような
状況下であっても温度上昇による特性劣化を防止でき
る。As described above, according to the present embodiment, the magnetic gap 10 is provided between the permanent magnet 9 and the core 15, and the heat insulating insulator sheet 11 is provided in the magnetic gap 10. The temperature rise of the magnet 9 is suppressed, and the characteristics are less likely to deteriorate. That is, the heat generated in the core 15 is suppressed from being transmitted to the permanent magnet 9 by the heat insulating insulator sheet 11 as a heat insulating member, so that the temperature rise of the permanent magnet 9 caused by the heat from the core 15 is effectively prevented. In particular, it is possible to prevent the characteristic deterioration due to the temperature rise even under the situation where the permanent magnet 9 having bad temperature characteristics is used.
【００２４】また、磁気的空隙１０に配設される断熱シ
ートの厚みを変えることにより、バイアス磁束を調節す
ることができ、コイル３の作る磁束を殆ど変えずに永久
磁石９の作るバイアス磁束だけを支配的に調節できる。
従って、コイル３の作る磁束を最適に打ち消すように永
久磁石９の作るバイアス磁束を調節でき、結果としてリ
アクトルのＬ−Ｉ特性を所望の値に設定することができ
る。The bias magnetic flux can be adjusted by changing the thickness of the heat insulating sheet arranged in the magnetic gap 10, and the magnetic flux generated by the coil 3 is hardly changed, and only the bias magnetic flux generated by the permanent magnet 9 is changed. Can be controlled dominantly.
Therefore, the bias magnetic flux generated by the permanent magnet 9 can be adjusted to optimally cancel the magnetic flux generated by the coil 3, and as a result, the L-I characteristic of the reactor can be set to a desired value.
【００２５】なお、上記した各実施例は、Ｔ形コアとＣ
形コアより成るリアクトルを対象とした例で説明した
が、本発明は、Ｅ形コアとＩ形コアまたは一対のＣ形コ
アより成るリアクトルの場合についても適用することが
できる。In each of the above embodiments, the T-shaped core and C
Although the description has been given of the example of the reactor including the shape core, the present invention can be applied to the case of the reactor including the E-shaped core and the I-shaped core or the pair of C-shaped cores.
【００２６】さらに、永久磁石については、板の長手方
向および板厚方向おのおのに片側２極となるように着磁
した場合について示したが、板厚方向に２極となるよう
に着磁し、それを２枚組み合わせても良いし、１枚だけ
用いてもう片方はバックヨークで構成しても良い。Further, regarding the permanent magnet, the case where it is magnetized so as to have two poles on one side in each of the longitudinal direction and the thickness direction of the plate is shown, but it is magnetized so as to have two poles in the plate thickness direction, Two of them may be combined, or only one may be used and the other may be a back yoke.
【００２７】[0027]
【発明の効果】以上説明したように、この発明によれ
ば、永久磁石とコアの間に磁気的空隙を設け、この磁気
的空隙に断熱絶縁体シートを設けるようにしているの
で、永久磁石の温度上昇が抑制されて特性が劣化し難く
なる。つまり、コアに発生した熱が永久磁石へ伝わるこ
とを断熱部材としての断熱絶縁体シートにより抑制され
るから、コアからの熱に起因した永久磁石９の温度上昇
を効果的に防止でき、特に、永久磁石として温度特性が
悪いものが使用されるような状況下であっても温度上昇
による特性劣化を防止できる。As described above, according to the present invention, the magnetic gap is provided between the permanent magnet and the core, and the heat insulating insulator sheet is provided in the magnetic gap. The temperature rise is suppressed and the characteristics are less likely to deteriorate. That is, the heat generated in the core is suppressed from being transferred to the permanent magnet by the heat insulating insulator sheet as the heat insulating member, so that the temperature rise of the permanent magnet 9 due to the heat from the core can be effectively prevented, and in particular, It is possible to prevent characteristic deterioration due to temperature rise even in a situation where a permanent magnet having bad temperature characteristics is used.
【００２８】つぎの発明によれば、磁気的空隙に配設さ
れる断熱シートの厚みを変えることにより、バイアス磁
束を調節することができ、コイルの作る磁束を殆ど変え
ずに永久磁石の作るバイアス磁束だけを調節できる。従
って、コイルの作る磁束を最適に打ち消すように永久磁
石の作るバイアス磁束を調節でき、結果としてリアクト
ルのＬ−Ｉ特性を所望の値に設定することができる。According to the next invention, the bias magnetic flux can be adjusted by changing the thickness of the heat insulating sheet disposed in the magnetic gap, and the bias generated by the permanent magnet can be hardly changed by the magnetic flux generated by the coil. Only the magnetic flux can be adjusted. Therefore, the bias magnetic flux generated by the permanent magnet can be adjusted to optimally cancel the magnetic flux generated by the coil, and as a result, the L-I characteristic of the reactor can be set to a desired value.
【図１】 この発明の実施の形態によるリアクトルを示
す断面図である。FIG. 1 is a sectional view showing a reactor according to an embodiment of the present invention.
【図２】 コアと永久磁石の間の磁気的空隙の広さを変
えたときのＬ−Ｉ特性の変化を示す図である。FIG. 2 is a diagram showing changes in the L-I characteristics when the width of the magnetic gap between the core and the permanent magnet is changed.
【図３】 従来技術を示す図である。FIG. 3 is a diagram showing a conventional technique.
【図４】 永久磁石の温度と減磁特性の関係を示す図で
ある。FIG. 4 is a diagram showing a relationship between a temperature of a permanent magnet and a demagnetization characteristic.
１ Ｔ形コア、２ 脚部、３ コイル、４ 底部、５
Ｃ形コア、６ 両脚、７ 磁気的空隙、８ 絶縁体、９
永久磁石、１０ 磁気的空隙、１１ 断熱絶縁体シー
ト、１２ バックヨーク、１３ コイル磁束、１４ バ
イアス磁束、１５ コア。1 T-shaped core, 2 legs, 3 coils, 4 bottom, 5
C-shaped core, 6 legs, 7 magnetic air gap, 8 insulator, 9
Permanent magnets, 10 magnetic air gaps, 11 heat insulating insulator sheets, 12 back yokes, 13 coil magnetic fluxes, 14 bias magnetic fluxes, 15 cores.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 大上 正勝 東京都千代田区丸の内二丁目２番３号 三 菱電機株式会社内 (72)発明者 加藤 昌則 東京都千代田区丸の内二丁目２番３号 三 菱電機株式会社内 (72)発明者 中原 裕治 東京都千代田区丸の内二丁目２番３号 三 菱電機株式会社内 (72)発明者 秋田 裕之 東京都千代田区丸の内二丁目２番３号 三 菱電機株式会社内 (72)発明者 谷 良浩 東京都千代田区丸の内二丁目２番３号 三 菱電機株式会社内 ─────────────────────────────────────────────────── ─── Continued front page (72) Inventor Masakatsu Oue 2-3 2-3 Marunouchi, Chiyoda-ku, Tokyo Inside Ryo Electric Co., Ltd. (72) Inventor Masanori Kato 2-3 2-3 Marunouchi, Chiyoda-ku, Tokyo Inside Ryo Electric Co., Ltd. (72) Inventor Yuji Nakahara 2-3 2-3 Marunouchi, Chiyoda-ku, Tokyo Inside Ryo Electric Co., Ltd. (72) Inventor Hiroyuki Akita 2-3 2-3 Marunouchi, Chiyoda-ku, Tokyo Inside Ryo Electric Co., Ltd. (72) Inventor Yoshihiro Tani 2-3 2-3 Marunouchi, Chiyoda-ku, Tokyo Inside Ryo Electric Co., Ltd.
Claims (2)
設し、この永久磁石を用いて磁気バイアスを与えるリア
クトルにおいて、 永久磁石とコアの間に磁気的空隙を設け、この磁気的空
隙に熱が伝達しにくい断熱絶縁体シートを介在させるこ
とを特徴とするリアクトル。1. A reactor in which a permanent magnet is disposed on a core around which a coil is wound, and a magnetic bias is provided by using the permanent magnet, a magnetic air gap is provided between the permanent magnet and the core, and the magnetic air gap is provided. A reactor characterized by interposing a heat insulating insulator sheet that does not easily transfer heat to the reactor.
ことによりバイアス磁束を調節することを特徴とする請
求項１に記載のリアクトル。2. The reactor according to claim 1, wherein the bias magnetic flux is adjusted by changing the thickness of the heat insulating insulator sheet.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002144871A JP3910488B2 (en) | 2002-05-20 | 2002-05-20 | Reactor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002144871A JP3910488B2 (en) | 2002-05-20 | 2002-05-20 | Reactor |
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| JP3910488B2 JP3910488B2 (en) | 2007-04-25 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011065001A1 (en) | 2009-11-25 | 2011-06-03 | ダイキン工業株式会社 | Cooling structure for magnet-fitted reactor |
| CN106057395A (en) * | 2016-08-16 | 2016-10-26 | 福州大学 | Permanent magnet biased magnetic element assembly and method for implementing same |
| WO2017103077A1 (en) * | 2015-12-17 | 2017-06-22 | Commissariat A L'energie Atomique Et Aux Energies Alternatives | Inductive core exhibiting low magnetic losses |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107068348A (en) * | 2016-12-29 | 2017-08-18 | 江苏越达电力设备有限公司 | A kind of frequency converter direct current reactor based on flat ripple control module |
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2002
- 2002-05-20 JP JP2002144871A patent/JP3910488B2/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011065001A1 (en) | 2009-11-25 | 2011-06-03 | ダイキン工業株式会社 | Cooling structure for magnet-fitted reactor |
| US8928444B2 (en) | 2009-11-25 | 2015-01-06 | Daikin Industries, Ltd. | Cooling structure for magnet-equipped reactor |
| WO2017103077A1 (en) * | 2015-12-17 | 2017-06-22 | Commissariat A L'energie Atomique Et Aux Energies Alternatives | Inductive core exhibiting low magnetic losses |
| FR3045924A1 (en) * | 2015-12-17 | 2017-06-23 | Commissariat Energie Atomique | INDUCTANCE CORE WITH REDUCED MAGNETIC LOSSES |
| US11309109B2 (en) | 2015-12-17 | 2022-04-19 | Commissariat A L'energie Atomique Et Aux Energies Alternatives | Inductive core exhibiting low magnetic losses |
| CN106057395A (en) * | 2016-08-16 | 2016-10-26 | 福州大学 | Permanent magnet biased magnetic element assembly and method for implementing same |
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| Publication number | Publication date |
|---|---|
| JP3910488B2 (en) | 2007-04-25 |
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