JPH04357804A - Gapped iron-core reactor - Google Patents
Gapped iron-core reactorInfo
- Publication number
- JPH04357804A JPH04357804A JP13302591A JP13302591A JPH04357804A JP H04357804 A JPH04357804 A JP H04357804A JP 13302591 A JP13302591 A JP 13302591A JP 13302591 A JP13302591 A JP 13302591A JP H04357804 A JPH04357804 A JP H04357804A
- Authority
- JP
- Japan
- Prior art keywords
- core
- gapped
- iron
- block
- leg
- 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
- 239000000463 material Substances 0.000 claims abstract description 11
- 230000035699 permeability Effects 0.000 claims abstract description 4
- 238000004804 winding Methods 0.000 claims description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 8
- 229910000976 Electrical steel Inorganic materials 0.000 claims description 7
- 238000010030 laminating Methods 0.000 claims description 3
- 230000004907 flux Effects 0.000 abstract description 19
- 230000006698 induction Effects 0.000 abstract 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
Landscapes
- Regulation Of General Use Transformers (AREA)
Abstract
Description
[発明の目的] [Purpose of the invention]
【0001】0001
【産業上の利用分野】本発明はギャップ付鉄心形リアク
トルに関するもので、特にギャップ付鉄心脚の磁束密度
分布を均一にするための鉄心構造の改良に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gapped core reactor, and more particularly to an improvement in the core structure for making the magnetic flux density distribution of gapped core legs uniform.
【0002】0002
【従来の技術】分路リアクトル等に用いられるリアクト
ルは従来一般にギャップ付鉄心形リアクトルが用いられ
ている。このギャップ付鉄心形リアクトルは方向性けい
素鋼板の抜板を主磁束と方向性を合せて放射状に積層し
て形成した略々断面円形の複数個のブロック鉄心間に絶
縁物性のギャップ部材を挟みこむことにより複数個の磁
気的ギャップを介して前記ブロック鉄心を積み重ねてギ
ャップ付鉄心脚を構成し、その上、下に同じくけい素鋼
板を積層して形成した断面矩形のヨーク鉄心を配置し、
前記ギャップ付鉄心脚に巻線を巻装して構成される。2. Description of the Related Art Conventionally, a gapped iron core type reactor has been generally used as a reactor used as a shunt reactor or the like. This gapped core reactor has an insulating gap member sandwiched between multiple block cores with approximately circular cross-sections, which are formed by laminating radially cut grain-oriented silicon steel sheets with the main magnetic flux and directionality aligned. The block cores are stacked together via a plurality of magnetic gaps to form a gapped core leg, and a yoke core with a rectangular cross section formed by laminating silicon steel plates is placed above and below the core,
It is constructed by winding a winding around the gapped core leg.
【0003】0003
【発明が解決しようとする課題】ところで、このように
構成されたギャップ付鉄心形リアクトルでは、リアクト
ル本体から発生する騒音の低減が1つの大きな問題点で
ある。騒音の要因としては機械的な振動によるものと磁
気歪によるものとに大別することができる。機械的振動
によるものとは、前記ギャップを通過する磁束によりギ
ャップ上、下のブロック鉄心間に磁気吸引力が作用し、
これにより振動のため騒音が発生する現象である。従っ
て、ギャップを介してヨーク鉄心、ブロック鉄心を一体
的に強固に締付ける構成が必要になるが、経年変化等に
よる締付力低下が発生し管理が難しい。一方、磁気歪に
よるものとは、鉄心の中に磁束が通ることによって発生
する磁気歪による振動であり、これに関しては鉄心断面
積を増して磁束密度を低く抑え、適切に管理することに
よって比較的容易に低減できる。ところで機械的振動は
ギャップ付鉄心脚の磁束分布によって更に増大される恐
れがある。即ち、ギャップ付鉄心脚の高さ方向中央部よ
りも両端部の方が磁束密度が一般に低くなっており、そ
の為に鉄心脚の高さ方向に沿って各ギャップにおける磁
気吸引力にアンバランスを生じ、結果として鉄心脚全体
が大きく振動するという現象である。この磁束分布のア
ンバランスは巻線と鉄心脚との相対的な位置関係、即ち
鉄心脚の高さ方向中央部は巻線によって磁束が鉄心中に
しっかり押え込まれるが、鉄心脚の端部では磁束が巻線
端部へと広がることによって生ずる現象である。However, in the gapped iron core reactor constructed as described above, one major problem is the reduction of noise generated from the reactor body. Noise causes can be broadly classified into those caused by mechanical vibration and those caused by magnetostriction. The mechanical vibration is caused by the magnetic flux passing through the gap that causes a magnetic attraction force to act between the block cores above and below the gap.
This is a phenomenon in which noise is generated due to vibration. Therefore, a configuration is required in which the yoke core and block core are integrally tightened firmly through a gap, but the tightening force decreases due to changes over time and is difficult to manage. On the other hand, magnetostrictive vibrations are vibrations caused by magnetostriction caused by magnetic flux passing through the iron core, and this can be reduced by increasing the core cross-sectional area, keeping the magnetic flux density low, and managing it appropriately. Can be easily reduced. However, the mechanical vibration may be further increased by the magnetic flux distribution of the gapped core legs. In other words, the magnetic flux density is generally lower at both ends of the gapped core leg than at the center in the height direction, which causes an imbalance in the magnetic attraction force in each gap along the height direction of the core leg. This is a phenomenon in which the entire core leg vibrates greatly as a result. This unbalance in magnetic flux distribution is caused by the relative positional relationship between the windings and the core legs. In other words, at the center of the core leg in the height direction, the magnetic flux is firmly held down by the windings into the core, but at the ends of the core leg, the magnetic flux is firmly held down by the windings. This is a phenomenon that occurs when magnetic flux spreads to the ends of the winding.
【0004】本発明は以上の欠点を除去してギャップ付
鉄心脚中の磁束分布を均一にして機械的振動を低減し、
騒音のより一層の低減を図ったギャップ付鉄心形リアク
トルを提供することを目的とする。
[発明の構成]The present invention eliminates the above-mentioned drawbacks, uniformizes the magnetic flux distribution in the gapped core legs, and reduces mechanical vibration.
The purpose of the present invention is to provide an iron core reactor with a gap that further reduces noise. [Structure of the invention]
【0005】[0005]
【課題を解決するための手段】本発明のギャップ付鉄心
形リアクトルはヨーク鉄心に接するギャップ付鉄心脚の
高さ方向両端に位置するブロック鉄心の材質を、同じく
中央部のブロック鉄心に比べてより透磁率の高いものを
使用するようにしたものである。[Means for Solving the Problems] The gapped core type reactor of the present invention has a material of the block cores located at both ends in the height direction of the gapped core legs in contact with the yoke core, which is made of a material that is lower than that of the block core located at the center. A material with high magnetic permeability is used.
【0006】[0006]
【作用】このようにするとギャップ付鉄心脚の上、下端
に磁束が集まり易くなり、鉄心脚全体として磁束密度の
均一化が図れ、各ギャップ間での磁気吸引力のアンバラ
ンスを低減して機械的振動による騒音を低減することが
できる。[Effect] This makes it easier for magnetic flux to gather at the upper and lower ends of the gapped core legs, making the magnetic flux density uniform throughout the core legs, reducing the imbalance of magnetic attraction between each gap, and machine noise caused by mechanical vibration can be reduced.
【0007】[0007]
【実施例】以下、本発明の一実施例を単相3脚鉄心のギ
ャップ付鉄心形リアクトルの場合について図面を参照し
て説明する。図1において、けい素鋼板の抜板を積層し
て形成した断面略々円形の複数個のブロック鉄心1aを
絶縁物性のギャップ部材から成る磁気的なギャップ2を
介して積み重ねてギャップ付鉄心脚1を構成し、このギ
ャップ付鉄心脚1に巻線が巻装されている。このギャッ
プ付鉄心脚1の上、下にはこれを挟むようにけい素鋼板
を積層して構成される断面矩形の上、下のヨーク鉄心4
,5が配置されており、上、下の締付板6を介して締付
スタッド7、締付ナット8によって上、下ヨーク鉄心4
,5、ギャップ付鉄心脚1を一体的に締付けている。
9は側脚である。そして、本発明においては、上、下の
ヨーク鉄心4,5と接するギャップ付鉄心脚1の高さ方
向上、下端に位置するブロック鉄心1aの抜板の材質を
高さ方向中央部のブロック鉄心に比べ透磁率の高いけい
素鋼板とし、高さ方向中央部のブロック鉄心1bの材質
を方向性、または無方向性けい素鋼板としている。その
結果、矢印10で示すギャップ付鉄心脚1の磁束の流れ
が各ギャップ間にて均一となり、磁気吸引力のアンバラ
ンスが少なくなり、機械的振動による騒音を低減するこ
とができる。DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings in the case of a single-phase three-leg core reactor with a gap. In FIG. 1, a plurality of block cores 1a each having a substantially circular cross section formed by stacking blanks of silicon steel plates are stacked together with a magnetic gap 2 made of an insulating gap member interposed therebetween to form a gapped core leg 1. A winding wire is wound around this core leg 1 with a gap. Upper and lower yoke cores 4 with a rectangular cross section are constructed by stacking silicon steel plates on the upper and lower sides of the gapped core leg 1.
, 5 are arranged, and the upper and lower yoke cores 4 are connected via the upper and lower clamping plates 6 to the clamping studs 7 and clamping nuts 8.
, 5. The gapped iron core leg 1 is integrally tightened. 9 is the side leg. In the present invention, the punched material of the block core 1a located at the upper and lower ends of the gapped core leg 1 in contact with the upper and lower yoke cores 4 and 5 in the height direction is changed from the material of the punched block core 1a at the center in the height direction. The material of the block iron core 1b at the center in the height direction is a oriented or non-oriented silicon steel plate. As a result, the flow of magnetic flux in the gapped core leg 1 shown by the arrow 10 becomes uniform between the gaps, the imbalance of magnetic attraction force is reduced, and noise due to mechanical vibration can be reduced.
【0008】[0008]
【発明の効果】以上のように本発明によれば、ヨーク鉄
心に接するギャップ付鉄心脚の高さ方向上、下端に位置
するブロック鉄心抜板の材質を透磁率の高い材質にして
、中央部のブロック鉄心よりも磁束が集り易くしてギャ
ップ付鉄心脚の磁束密度を均一化することにより機械的
振動を抑制し、騒音のより一層の低減を図ったギャップ
付鉄心形リアクトルを得ることができる。As described above, according to the present invention, the material of the block core blanks located at the upper and lower ends in the height direction of the gapped core legs in contact with the yoke core is made of a material with high magnetic permeability. It is possible to obtain a gapped core reactor that suppresses mechanical vibration and further reduces noise by making it easier for magnetic flux to gather than in the block core and making the magnetic flux density uniform in the gapped core legs. .
【図1】本発明の一実施例を示す正面図。FIG. 1 is a front view showing an embodiment of the present invention.
1…ギャップ付鉄心脚
1a…ブロック鉄心
2…ギャップ
3…巻線4,5…ヨーク鉄心
6…締付板7…スタッド
8…締付
ナット9…側脚
10…磁束の流れ1... Core leg with gap
1a...Block core 2...Gap
3...Winding 4, 5...Yoke iron core
6...Tightening plate 7...Stud
8...Tightening nut 9...Side leg
10...Flow of magnetic flux
Claims (1)
形成される断面略々円形の複数個のブロック鉄心を磁気
的ギャップを介して積み重ねてギャップ付鉄心脚を構成
し、このギャップ付鉄心脚の周囲に巻線を巻装し、且つ
ギャップ付鉄心脚の上、下にけい素鋼板を積層して形成
した断面矩形のヨーク鉄心を配置し、締付スタッドによ
りヨーク鉄心及びギャップ付鉄心脚を一体的に締付ける
ようにしたギャップ付鉄心形リアクトルにおいて、ギャ
ップ付鉄心脚の高さ方向の上、下端に位置するブロック
鉄心の抜板の材質を高さ方向中央部のブロック鉄心に比
べて透磁率の高い材質を用いたことを特徴とするギャッ
プ付鉄心形リアクトル。Claim 1: A gapped core leg is constructed by stacking a plurality of block cores each having a substantially circular cross section formed by stacking punched silicon steel plates radially through a magnetic gap. A winding is wound around the core leg, and a yoke core with a rectangular cross section formed by laminating silicon steel plates is placed above and below the gapped core leg, and the yoke core and gapped core are connected by tightening studs. In a gapped core type reactor in which the legs are integrally tightened, the material of the punched block cores located at the upper and lower ends of the gapped core legs in the height direction is compared with that of the block core located at the center in the height direction. An iron core reactor with a gap characterized by the use of a material with high magnetic permeability.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13302591A JPH04357804A (en) | 1991-06-04 | 1991-06-04 | Gapped iron-core reactor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13302591A JPH04357804A (en) | 1991-06-04 | 1991-06-04 | Gapped iron-core reactor |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH04357804A true JPH04357804A (en) | 1992-12-10 |
Family
ID=15095041
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13302591A Pending JPH04357804A (en) | 1991-06-04 | 1991-06-04 | Gapped iron-core reactor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH04357804A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009033057A (en) * | 2007-07-30 | 2009-02-12 | Sumitomo Electric Ind Ltd | Core for reactor |
JP2016167620A (en) * | 2010-12-08 | 2016-09-15 | エプコス アクチエンゲゼルシャフトEpcos Ag | Inductive structural element with improved core characteristic |
-
1991
- 1991-06-04 JP JP13302591A patent/JPH04357804A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009033057A (en) * | 2007-07-30 | 2009-02-12 | Sumitomo Electric Ind Ltd | Core for reactor |
JP2016167620A (en) * | 2010-12-08 | 2016-09-15 | エプコス アクチエンゲゼルシャフトEpcos Ag | Inductive structural element with improved core characteristic |
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