JPH10172841A - Choke coil and noise filter using the coil - Google Patents
Choke coil and noise filter using the coilInfo
- Publication number
- JPH10172841A JPH10172841A JP8326556A JP32655696A JPH10172841A JP H10172841 A JPH10172841 A JP H10172841A JP 8326556 A JP8326556 A JP 8326556A JP 32655696 A JP32655696 A JP 32655696A JP H10172841 A JPH10172841 A JP H10172841A
- Authority
- JP
- Japan
- Prior art keywords
- choke coil
- winding
- wire
- magnetic core
- noise filter
- 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.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/12—Arrangements for reducing harmonics from ac input or output
- H02M1/126—Arrangements for reducing harmonics from ac input or output using passive filters
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/32—Means for protecting converters other than automatic disconnection
- H02M1/322—Means for rapidly discharging a capacitor of the converter for protecting electrical components or for preventing electrical shock
Landscapes
- Coils Or Transformers For Communication (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は電源ラインと電子・
電気装置間に挿入されるＥＭＩ（Electro-Magnetic-Int
erference）対策用のライン・ノイズ・フィルタに関す
るものである。The present invention relates to a power supply line and an electronic
EMI (Electro-Magnetic-Int) inserted between electrical devices
The present invention relates to a line noise filter for countermeasures.
【０００２】[0002]
【従来の技術】半導体スイッチング素子の高性能化の進
展に伴い、スイッチング電源やインバータ装置が急速に
普及している。特にＩＧＢＴに代表される高周波化対応
の大出力用半導体スイッチング素子の開発により、スイ
ッチング周波数を可聴周波数帯の上限以上とした低騒音
インバータ装置をはじめとして、大容量インバータ装置
の高周波化が急速に図られつつある。しかし、このよう
なスイッチング電源と高周波インバータ装置の普及にと
もない、これらの装置の半導体スイッチング素子のスイ
ッチング動作により発生する高周波ノイズが電源ライン
を介して同一の電源ラインに接続される他の電子機器に
障害を与えてしまう問題がある。このため、このような
スイッチング動作を行う装置から電源ライン側に伝搬さ
れる高周波ノイズを抑制するため、従来、例えば図５に
示すような回路構成のノイズフィルタが前記のスイッチ
ング動作を行う装置と電源ライン間に挿入される。ま
た、これらのノイズフィルタは電源ラインから装置に高
周波ノイズが進入し装置が誤動作するのを防ぐ機能も付
加されている。2. Description of the Related Art With the advancement of high performance semiconductor switching elements, switching power supplies and inverter devices have rapidly become widespread. In particular, with the development of high-power semiconductor switching elements such as IGBTs, which can handle high frequencies, large-capacity inverters, including low-noise inverters whose switching frequency is higher than the upper limit of the audible frequency band, are rapidly increasing in frequency. It is being done. However, with the spread of such switching power supplies and high-frequency inverter devices, high-frequency noise generated by the switching operation of the semiconductor switching elements of these devices is transmitted to other electronic devices connected to the same power line via the power line. There is a problem that causes obstacles. For this reason, in order to suppress high-frequency noise propagated from the device performing such a switching operation to the power supply line side, conventionally, for example, a noise filter having a circuit configuration as shown in FIG. Inserted between lines. These noise filters are also provided with a function for preventing high-frequency noise from entering a device from a power supply line and causing the device to malfunction.
【０００３】図５は単相用のノイズフィルタの回路構成
であり、同図で３１と３２は電源ラインに接続される入
力端子、３３と３５は電源ライン間コンデンサ、３４は
コモンモードチョークコイル、３６と３７はそれぞれ電
源ラインとアース間のコンデンサ、３８は電源ライン間
抵抗、３９と４０は装置に接続される出力端子である。
用途によっては入力と出力とを逆に接続して使うことも
可能である。FIG. 5 shows a circuit configuration of a single-phase noise filter. In FIG. 5, reference numerals 31 and 32 denote input terminals connected to a power supply line, reference numerals 33 and 35 denote capacitors between power supply lines, reference numeral 34 denotes a common mode choke coil, 36 and 37 are capacitors between the power supply line and the ground, 38 is a resistance between the power supply lines, and 39 and 40 are output terminals connected to the device.
Depending on the application, the input and output can be connected in reverse.
【０００４】上記のコモンモードチョークコイルは環状
形の磁心に単相若しくは三相の導線を巻いて形成したも
のである（図５は単相巻の例である）。そして、従来、
上記磁心はＭｎ−Ｚｎフェライト、圧粉鉄心、Ｆｅ基ア
モルファス合金、Ｃｏ基アモルファス合金等によって形
成されていた。コモンモードチョークコイルに用いる磁
心は比透磁率と飽和磁束密度とが共に高いことが望まし
いが、上記の材質はその点で必ずしも満足のいくもので
はなかった。従って、この様な材質を磁心に用いたコモ
ンモードチョークコイルを有するノイズフィルタは、そ
の特性において十分なものではなく、多段接続で使用さ
れるため大型化するなどして今日要求されている高周波
化や小型化が十分に図られなかった。The above-mentioned common mode choke coil is formed by winding a single-phase or three-phase conductor around an annular magnetic core (FIG. 5 shows an example of a single-phase winding). And conventionally,
The magnetic core was made of Mn-Zn ferrite, dust core, Fe-based amorphous alloy, Co-based amorphous alloy, or the like. It is desirable that the magnetic core used for the common mode choke coil has high relative magnetic permeability and high saturation magnetic flux density, but the above-mentioned materials are not always satisfactory in that respect. Therefore, the noise filter having a common mode choke coil using such a material for the magnetic core is not satisfactory in its characteristics, and is used in multi-stage connection, so that the noise filter is required to be operated at a higher frequency, which is required today. And miniaturization was not achieved enough.
【０００５】近年、上記材質に変わりうるものとして日
立金属株式会社が開発した合金であるファインメット
（商品名）を磁心に用いることで高い比透磁率と飽和磁
束密度が得られ、コモンモードチョークコイルおよびノ
イズフィルタの高周波化や小型化が可能となった。ファ
インメットは組織の体積全体の５０％以上を粒径５００
オングストローム以下の結晶粒が占める超微細結晶軟磁
性合金である。これはＦｅ、Ｃｏ、Ｎｉから選ばれる少
なくとも１種の元素を主成分とし、結晶粒微細化や磁気
特性改善のための元素を添加したもので、液体急冷法に
より非晶質合金とし、これを熱処理により結晶化して製
造する。In recent years, by using Finemet (trade name) which is an alloy developed by Hitachi Metals, Ltd. as a material which can be replaced with the above-mentioned materials, a high relative permeability and a high saturation magnetic flux density can be obtained by using a common mode choke coil. In addition, the frequency and size of the noise filter can be increased. Finemet has a particle diameter of 500% or more of the entire tissue volume.
An ultrafine crystalline soft magnetic alloy occupied by crystal grains of Å or less. This is a material containing at least one element selected from Fe, Co, and Ni as a main component, and adding an element for refining crystal grains and improving magnetic properties, and forming an amorphous alloy by a liquid quenching method. It is manufactured by crystallization by heat treatment.
【０００６】[0006]
【発明が解決しようとする課題】ファインメットを環状
形の磁心に用いた従来のチョークコイルを図６に示す。
４５はファインメットからなる磁心であり、通常は樹脂
製のケースに入れて導線４６との絶縁を図る。導線４６
にはポリウレタン被覆銅線（一般的にはマグネットワイ
ヤと呼ばれる）が用いられている。マグネットワイヤの
被覆は環状形の磁心に巻く際にキズが発生しやすいので
図６に示すように相単位で別々に離して巻き、絶縁性樹
脂の仕切板４７を巻線スペース４８に導線４６を相単位
で仕切るように装着し、導線４６間のレアショートを防
ぐ。マグネットワイヤの巻線作業は手作業で行われ、比
較的細いものは巻きやすいが大きい電流を流すには太い
線径にしなければならない。マグネットワイヤは基本的
には可とう性に乏しいため太い線径のマグネットワイヤ
ほど巻線の作業効率が悪くなる。その場合、細い導体を
用いた導線を複数本並列巻きすることが一般的であるが
巻きにくく作業工数増となり、やはり作業効率が悪い。
また、仕切板のスペースを残さなければならず、環状形
磁心の内径側のスペースを巻線用のスペースとして有効
に利用することができない。即ち、ファインメットを磁
心に使用して磁心の小型化は可能となっても巻線の作業
効率が悪くなる。巻線の作業効率を確保しようとすれば
巻線スペース４８をある程度大きくせざるを得ず、環状
形の磁心（チョークコイル）の小型化は十分に達成でき
ないという問題点があった。FIG. 6 shows a conventional choke coil using Finemet for an annular magnetic core.
Numeral 45 denotes a magnetic core made of finemet, which is usually housed in a resin case to insulate it from the conductor 46. Conductor 46
Uses a polyurethane-coated copper wire (generally called a magnet wire). Since the coating of the magnet wire is liable to be scratched when wound around an annular magnetic core, as shown in FIG. It is mounted so as to be divided in units of phases to prevent rare shorts between the conductors 46. The winding operation of the magnet wire is performed manually, and a relatively thin one is easy to wind, but a large wire diameter must be used to pass a large current. Since the magnet wire is basically inferior in flexibility, the work efficiency of winding becomes worse as the magnet wire has a larger diameter. In such a case, it is common to wind a plurality of conductors using a thin conductor in parallel, but it is difficult to wind the wire and the number of work steps increases, and the work efficiency is also poor.
Further, a space for the partition plate must be left, and the space on the inner diameter side of the annular magnetic core cannot be effectively used as a space for winding. That is, even if fine cores can be miniaturized by using finemets for the magnetic cores, the working efficiency of the windings deteriorates. If the operation efficiency of the winding is to be ensured, the winding space 48 must be increased to some extent, and the size of the annular magnetic core (choke coil) cannot be sufficiently reduced.
【０００７】本発明の目的は、小型化され巻線スペース
の小さい環状形の大容量チョークコイル用磁心を用いて
も効率よく巻線作業ができ、小型化できる環状形チョー
クコイルを提供することである。SUMMARY OF THE INVENTION An object of the present invention is to provide an annular choke coil which can be efficiently wound even if a small-sized annular large-capacity choke coil core having a small winding space can be used. is there.
【０００８】[0008]
【課題を解決するための手段】第一の発明は、超微細結
晶軟磁性合金で形成し表面に絶縁処理を施した環状形磁
心に、仕切板を設けずに、複数の可とう性電気絶縁電線
を巻線して形成してなり、前記電線１条当たりの導体の
断面積が１．２５mm2以上であることを特徴とするチョ
ークコイルである。環状形磁心は前述の組成のものを液
体急冷法により非晶質軟磁性合金薄帯とし、この薄帯を
巻いて環状形にする。これを熱処理により超微細結晶軟
磁性合金として環状形磁心を製造する。超微細結晶軟磁
性合金を粉体にして環状形磁心を形成してもよい。環状
形磁心の表面の絶縁処理は樹脂などの絶縁物を塗布若し
くはモールドするか、又は絶縁物で形成したケースに環
状形磁心を入れてもよい。可とう性電気絶縁電線は導体
と電気絶縁被覆体とを有するがその何れについても可と
う性が必要である。可とう性を与えるには一条の導体
は、より線構造であることが好ましく、より線の材質は
例えば銀メッキ軟銅線、すずメッキ軟銅線などが好適で
ある。導体の線径は流す電流値から求めることができ
る。電気絶縁被覆体の材質は例えばポリテトラフルオロ
エチレン、ポリクロロトリフルオロエチレン、ポリフッ
化ビニル、ポリフッ化ビニリデンなどのフッ素樹脂が好
適である。電気絶縁被覆体は十分な絶縁性を確保するた
めに０．４mm以上の厚さを有することが好ましい。この
様な可とう性電気絶縁電線を用いることで、環状形磁心
の内径側のスペースが小さくても巻線作業がしやすくな
るのである。また、従来のマグネットワイヤに比べレア
ショートを起こしにくくなるので仕切板を省くことがで
きる。よって、環状形磁心の内径側のスペースを巻線用
のスペースとして有効に利用することができる。図６に
示す従来のチョークコイルの巻線作業工数（時間）に対
する本願第一の発明のチョークコイルの巻線作業工数の
比は、電線１条当たりの導体の断面積が１．２５mm2で
約０．５、５．５mm2で約０．３であり導体の断面積が
大きくなるほど巻線作業工数の比は小さくなる。また、
環状形磁心に複数の巻線を施す場合、複数の電線はそれ
ぞれが別々であっても、それらを束ねることで巻線作業
の工数を更に抑えることができる。A first aspect of the present invention is to provide a ring-shaped magnetic core made of ultrafine crystalline soft magnetic alloy and having its surface insulated, without a partition plate, and a plurality of flexible electric insulating members. A choke coil formed by winding an electric wire, wherein a cross-sectional area of the conductor per one electric wire is 1.25 mm 2 or more. The annular magnetic core is made of the above composition into an amorphous soft magnetic alloy ribbon by a liquid quenching method, and the ribbon is wound into an annular shape. This is heat-treated to produce an annular magnetic core as an ultrafine crystalline soft magnetic alloy. An annular magnetic core may be formed by powdering an ultrafine crystalline soft magnetic alloy. The insulating treatment of the surface of the annular magnetic core may be performed by applying or molding an insulating material such as a resin, or by placing the annular magnetic core in a case formed of the insulating material. A flexible electrically insulated wire has a conductor and an electrically insulating covering, and any of them needs to have flexibility. In order to provide flexibility, it is preferable that one conductor has a stranded structure, and the material of the stranded wire is, for example, a silver-plated soft copper wire, a tin-plated soft copper wire, or the like. The wire diameter of the conductor can be determined from the value of the flowing current. As the material of the electric insulating covering, for example, a fluororesin such as polytetrafluoroethylene, polychlorotrifluoroethylene, polyvinyl fluoride, or polyvinylidene fluoride is preferable. It is preferable that the electrically insulating covering has a thickness of 0.4 mm or more in order to secure sufficient insulation. By using such a flexible electrically insulated wire, even if the space on the inner diameter side of the annular magnetic core is small, the winding operation becomes easy. In addition, since a rare short circuit is less likely to occur as compared with a conventional magnet wire, a partition plate can be omitted. Therefore, the space on the inner diameter side of the annular magnetic core can be effectively used as a space for winding. The ratio of the winding operation steps of the choke coil of the present first invention to the winding number of working steps of a conventional choke coil (time) shown in FIG. 6, about the cross-sectional area of the conductor per Article wire with 1.25 mm 2 It is about 0.3 at 0.5 and 5.5 mm 2 , and the ratio of the number of winding operations becomes smaller as the cross-sectional area of the conductor increases. Also,
When a plurality of windings are applied to the annular magnetic core, even if the plurality of electric wires are separate from each other, by bundling them, the number of winding operations can be further reduced.
【０００９】第二の発明は、超微細結晶軟磁性合金で形
成し表面に絶縁処理を施した環状形磁心に、仕切板を設
けずに、複数の導体を有する可とう性電気絶縁電線を巻
線して形成してなり、前記導体１条当たりの断面積が
１．２５mm2以上であることを特徴とするチョークコイ
ルである。第二の発明において、可とう性電気絶縁電線
は互いに電気絶縁された複数の導体を有する構造であ
る。可とう性電気絶縁電線の導体と電気絶縁被覆体に必
要な特性は第一の発明のものと同様であり、同様のもの
を使用しうる。環状形磁心に複数の巻線を施す場合、そ
れらの導線が互いの絶縁状態を維持しつつ一体構造とな
り一本の電線を形成することで巻線作業の工数増加を抑
えることができる。A second aspect of the present invention is to wind a flexible electrically insulated electric wire having a plurality of conductors on an annular magnetic core formed of an ultrafine crystalline soft magnetic alloy and having a surface subjected to insulation treatment, without providing a partition plate. A choke coil characterized by having a cross-sectional area per conductor of 1.25 mm 2 or more. In the second invention, the flexible electrically insulated wire has a structure having a plurality of conductors electrically insulated from each other. The characteristics required for the conductor of the flexible electrically insulated wire and the electrically insulative coating are the same as those of the first invention, and similar ones can be used. When a plurality of windings are applied to an annular magnetic core, the conductors are integrated into a single structure while maintaining an insulated state from each other, so that an increase in the number of winding operations can be suppressed by forming a single electric wire.
【００１０】[0010]
【発明の実施の形態】本発明による実施例について説明
する。図１において環状形磁心は液体急冷法により非晶
質軟磁性合金薄帯とし、この薄帯を巻いて環状形にし、
これを熱処理により超微細結晶軟磁性合金とし、この環
状形磁心をポリブチレンテレフタレート製のケース１１
にいれた後、可とう性電気絶縁電線１２に日立電線株式
会社製フロンレックス電線（商品名）（導体はより線構
造で、すずメッキ軟銅線、電気絶縁被覆体はポリテトラ
フルオロエチレン）２本を束ねて４ターン巻線し、チョ
ークコイル１０とした例である。本実施例以外の巻数、
材質であっても同様の構成を採れば効果は同様である。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment according to the present invention will be described. In FIG. 1, the annular magnetic core is formed into an amorphous soft magnetic alloy ribbon by a liquid quenching method, and the ribbon is wound into an annular shape.
This is heat-treated to form an ultrafine crystalline soft magnetic alloy, and this annular magnetic core is made of a case 11 made of polybutylene terephthalate.
After that, two flexible electric insulated wires 12 were used for the FLEXLEX electric wire (trade name) manufactured by Hitachi Cable Co., Ltd. (the conductor is a stranded structure, tinned annealed copper wire, and the electric insulating coating is polytetrafluoroethylene). In a choke coil 10. Number of turns other than this embodiment,
The same effect can be obtained by adopting the same configuration even if the material is used.
【００１１】次に巻線作業工数について説明する。ま
ず、超微細結晶軟磁性合金をポリブチレンテレフタレー
ト製のケースにいれ内径２０mm、外径４０mm、厚さ（高
さ）４０mmの環状形磁心を作製した。この環状形磁心に
マグネットワイヤを用いて図６の如く巻線する従来のチ
ョークコイル、２本の線を別々に巻線する本発明のチョ
ークコイルおよび図１の如く２本の線を束ねて巻線する
本発明のチョークコイルを作製した。本発明のチョーク
コイルに用いた線は前述の日立電線株式会社製フロンレ
ックス電線、それぞれ４ターンの巻線を手作業で行っ
た。作業工数を図２に示す。横軸は電線の１条当たりの
導体の断面積を表し、縦軸は各断面積における（本発明
のチョークコイルの巻線時間）／（従来のチョークコイ
ルの巻線時間）を表す。ａは２本の線を別々に巻線する
本発明のチョークコイル、ｂは２本の線を束ねて巻線す
る本発明のチョークコイルである。ａでは導体の断面積
が１．２５mm2以上で急激に巻線作業の効率がよくな
り、１．２５mm2で従来の５０％程度、５．５mm2で従来
の３０％程度になる。ｂではａのさらに１／２程度にな
る。Next, the winding man-hour will be described. First, an ultrafine crystalline soft magnetic alloy was placed in a case made of polybutylene terephthalate to prepare an annular magnetic core having an inner diameter of 20 mm, an outer diameter of 40 mm, and a thickness (height) of 40 mm. A conventional choke coil wound as shown in FIG. 6 using a magnet wire around this annular magnetic core, a choke coil according to the present invention in which two wires are separately wound, and a bundle of two wires as shown in FIG. A choke coil according to the present invention was manufactured. The wire used for the choke coil of the present invention was a Fronlex wire manufactured by Hitachi Cable Co., Ltd., and each of the wires was manually wound with four turns. The work steps are shown in FIG. The horizontal axis represents the cross-sectional area of the conductor per wire of the electric wire, and the vertical axis represents (the winding time of the choke coil of the present invention) / (the winding time of the conventional choke coil) in each cross-sectional area. a is a choke coil of the present invention in which two wires are separately wound, and b is a choke coil of the present invention in which two wires are bundled and wound. conductor cross-sectional area of the a rapidly becomes more efficient winding work in 1.25 mm 2 or more, the conventional about 50% at 1.25 mm 2, made with the conventional 30% at 5.5 mm 2. In the case of b, it becomes about 1/2 of a.
【００１２】このチョークコイル１０をコモンモードチ
ョーコイルとして単相用のノイズフィルタに組み込んだ
例を図３に示す。同図で２１と２２は電源ラインに接続
される入力端子、２３と２５は電源ライン間コンデン
サ、１０はコモンモードチョークコイル、２６と２７は
それぞれ電源ラインとアース間のコンデンサ、２８は電
源ライン間放電用抵抗、２９と３０は装置に接続される
出力端子である。FIG. 3 shows an example in which the choke coil 10 is incorporated as a common-mode choke coil into a single-phase noise filter. In the figure, 21 and 22 are input terminals connected to the power supply line, 23 and 25 are capacitors between power supply lines, 10 is a common mode choke coil, 26 and 27 are capacitors between the power supply line and the ground, and 28 is between power supply lines. Discharge resistors 29 and 30 are output terminals connected to the device.
【００１３】実施例ではコモンモードチョークコイルを
１つ使う１段のノイズフィルタを示したが、ノイズを除
去しきれない場合は図４に示すようにコモンモードチョ
ークコイルを２つ使う２段のノイズフィルタとすること
もできる。図３と同一部材のものには同一符号を付し
た。この場合、何れも本発明のチョークコイルとすると
きは勿論のこと、１つだけ本発明のチョークコイルとし
てもノイズフィルタの小型化に寄与する。更に段数が増
えても同様の効果が得られる。In the embodiment, a one-stage noise filter using one common mode choke coil is shown. However, if the noise cannot be completely removed, a two-stage noise filter using two common mode choke coils is used as shown in FIG. It can also be a filter. The same members as those in FIG. 3 are denoted by the same reference numerals. In this case, not only the choke coil of the present invention, but also one of the choke coils of the present invention contributes to downsizing of the noise filter. Similar effects can be obtained even if the number of stages further increases.
【００１４】[0014]
【発明の効果】本発明のチョークコイルは、小型化され
巻線スペースの小さい環状形の大容量チョークコイル用
磁心を用いても効率よく巻線作業ができる。また、チョ
ークコイルの小型化、更にはそれを用いるノイズフィル
タの小型化を容易にする。According to the choke coil of the present invention, even if a small-sized and large-capacity annular magnetic core for a choke coil having a small winding space can be used, the winding operation can be performed efficiently. Further, it is easy to reduce the size of the choke coil and the size of the noise filter using the choke coil.
【図１】本発明のチョークコイルの一例。FIG. 1 is an example of a choke coil according to the present invention.
【図２】従来のチョークコイルの巻線作業工数に対する
本発明のチョークコイルの巻線作業工数の比。FIG. 2 shows the ratio of the man-hour for winding the choke coil of the present invention to the man-hour for winding the conventional choke coil.
【図３】本発明のチョークコイルを用いたノイズフィル
タ回路の一例。FIG. 3 is an example of a noise filter circuit using the choke coil of the present invention.
【図４】本発明のチョークコイルを２つ用いたノイズフ
ィルタ回路の一例。FIG. 4 is an example of a noise filter circuit using two choke coils of the present invention.
【図５】従来のチョークコイルを用いたノイズフィルタ
回路の一例。FIG. 5 shows an example of a conventional noise filter circuit using a choke coil.
【図６】従来のチョークコイル。FIG. 6 shows a conventional choke coil.
１０ チョークコイル、１１ ケース（環状形磁心） １２ 可とう性電気絶縁電線 Reference Signs List 10 choke coil, 11 case (annular magnetic core) 12 flexible electrically insulated wire
Claims (5)
縁処理を施した環状形磁心に、仕切板を設けずに、複数
の可とう性電気絶縁電線を巻線して形成してなり、前記
電線１条当たりの導体の断面積が１．２５mm2以上であ
ることを特徴とするチョークコイル。1. A plurality of flexible electrically insulated wires are formed by winding a plurality of flexible electrically insulated wires without providing a partition plate on an annular magnetic core formed of an ultrafine crystalline soft magnetic alloy and having its surface insulated. A cross-sectional area of a conductor per one wire of the electric wire is 1.25 mm 2 or more.
は０．４mm以上の厚さを有することを特徴とする請求項
１に記載のチョークコイル。2. The choke coil according to claim 1, wherein the electrically insulating covering of the flexible electrically insulated wire has a thickness of 0.4 mm or more.
縁処理を施した環状形磁心に、仕切板を設けずに、複数
の導体を有する可とう性電気絶縁電線を巻線して形成し
てなり、前記導体１条当たりの断面積が１．２５mm2以
上であることを特徴とするチョークコイル。3. A flexible electrically insulated wire having a plurality of conductors wound around an annular magnetic core made of an ultrafine crystalline soft magnetic alloy and having a surface insulated, without a partition plate. A choke coil having a cross-sectional area per conductor of 1.25 mm 2 or more.
は０．４mm以上の厚さを有することを特徴とする請求項
３に記載のチョークコイル。4. The choke coil according to claim 3, wherein the electrically insulating covering of the flexible electrically insulated wire has a thickness of 0.4 mm or more.
るノイズフィルタにおいて、コモンモードチョークコイ
ルに請求項１乃至請求項４のいずれかに記載のチョーク
コイルを少なくとも１つ用いたことを特徴とするノイズ
フィルタ。5. A noise filter comprising a common mode choke coil, wherein at least one choke coil according to claim 1 is used for the common mode choke coil. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8326556A JPH10172841A (en) | 1996-12-06 | 1996-12-06 | Choke coil and noise filter using the coil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8326556A JPH10172841A (en) | 1996-12-06 | 1996-12-06 | Choke coil and noise filter using the coil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH10172841A true JPH10172841A (en) | 1998-06-26 |
Family
ID=18189150
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8326556A Pending JPH10172841A (en) | 1996-12-06 | 1996-12-06 | Choke coil and noise filter using the coil |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH10172841A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000027017A1 (en) * | 1998-11-04 | 2000-05-11 | Vacuumschmelze Gmbh | Frequency converter having a dampened direct voltage intermediate circuit |
| KR101199325B1 (en) | 2011-03-15 | 2012-11-09 | (주)모토닉 | Switching noise removal apparatus |
| JP2013106475A (en) * | 2011-11-15 | 2013-05-30 | Toshiba Corp | System connection inverter |
| JP2019021918A (en) * | 2017-07-11 | 2019-02-07 | プレモ・エセ・アPremo, S.A. | Hollow toroidal coil magnetic power unit |
| JPWO2018179326A1 (en) * | 2017-03-31 | 2019-12-12 | 三菱電機株式会社 | Noise filter and power conversion device |
-
1996
- 1996-12-06 JP JP8326556A patent/JPH10172841A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000027017A1 (en) * | 1998-11-04 | 2000-05-11 | Vacuumschmelze Gmbh | Frequency converter having a dampened direct voltage intermediate circuit |
| KR101199325B1 (en) | 2011-03-15 | 2012-11-09 | (주)모토닉 | Switching noise removal apparatus |
| JP2013106475A (en) * | 2011-11-15 | 2013-05-30 | Toshiba Corp | System connection inverter |
| JPWO2018179326A1 (en) * | 2017-03-31 | 2019-12-12 | 三菱電機株式会社 | Noise filter and power conversion device |
| JP2019021918A (en) * | 2017-07-11 | 2019-02-07 | プレモ・エセ・アPremo, S.A. | Hollow toroidal coil magnetic power unit |
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