JPH09232164A - Triangularly arranged tripod-core type three-phase transformer - Google Patents
Triangularly arranged tripod-core type three-phase transformerInfo
- Publication number
- JPH09232164A JPH09232164A JP8034664A JP3466496A JPH09232164A JP H09232164 A JPH09232164 A JP H09232164A JP 8034664 A JP8034664 A JP 8034664A JP 3466496 A JP3466496 A JP 3466496A JP H09232164 A JPH09232164 A JP H09232164A
- Authority
- JP
- Japan
- Prior art keywords
- iron core
- degrees
- yoke
- phase
- phase transformer
- 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.)
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- Manufacturing Cores, Coils, And Magnets (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】本発明は三相変圧器の鉄心の
構造に係り、特に、積層鉄心の三角配置三脚鉄心の構造
に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of an iron core of a three-phase transformer, and more particularly to a structure of a tripod iron core having a triangular arrangement of laminated cores.
【0002】[0002]
【従来の技術】内鉄形の三相変圧器の鉄心には、三脚鉄
心や五脚鉄心などがある。いずれも巻線がはめ込まれて
いる鉄心脚と、鉄心脚を連絡する継鉄からできており、
三相では三脚鉄心が多く採用されている。三相五脚鉄心
は、継鉄を通る磁束量が鉄心脚の磁束量により少ないの
で、継鉄の断面積を小さくすることができ、継鉄の幅が
小さくなるので鉄心全体の高さは低くなる。このため五
脚鉄心は輸送上の寸法制限から、鉄心高さを低くする必
要がある大容量変圧器などに採用されている。2. Description of the Related Art Iron cores of an inner iron type three-phase transformer include a tripod core and a pentapod core. All are made of iron core legs with windings fitted and yokes that connect the iron core legs.
The tripod core is often used in the three phases. The three-phase five-leg iron core has a smaller amount of magnetic flux passing through the yoke due to the amount of magnetic flux of the iron core leg, so the cross-sectional area of the yoke can be reduced and the width of the yoke is reduced, so the overall height of the iron core is low. Become. For this reason, the five-leg iron core is used in large capacity transformers, etc., where it is necessary to reduce the height of the iron core due to transportation size restrictions.
【0003】磁性鋼板としては、方向性珪素鋼板または
無方向性珪素鋼板が使用されている。鋼板の積み重ね方
法としては、長方形の鋼板を組み合わせた短冊形と、鉄
心脚と継鉄との接合端を45度とした額縁形とがある。
方向性珪素鋼板は圧延方向の磁気特性が優れているの
で、鉄心脚と継鉄との接合部で磁束を圧延方向に通すた
めに額縁形としている。As the magnetic steel sheet, a grain-oriented silicon steel sheet or a non-oriented silicon steel sheet is used. As a method of stacking steel plates, there are a strip shape in which rectangular steel plates are combined and a frame shape in which the joint end between the core leg and the yoke is 45 degrees.
Since the grain-oriented silicon steel sheet has excellent magnetic properties in the rolling direction, it has a frame shape so that magnetic flux can pass in the rolling direction at the joint between the iron core leg and the yoke.
【0004】このように、鉄心脚の鋼板と継鉄の鋼板の
接ぎ目が1枚または数枚ずつ交互にに重なるようにした
接続方法を重ね接続という。The connection method in which the joints of the steel plates of the iron core legs and the steel plates of the yokes are alternately overlapped one by one or several by one is called lap connection.
【0005】図12は従来の三相変圧器の三脚鉄心の斜
視図、図13はその平面図で、図12および図13に示
すように、巻線31を巻回する三つ鉄心脚32(三脚)
および上ヨーク33と下ヨーク33を平面上に配置して
鉄心34を形成している。この場合、鋼板の積み重ね方
法としては鉄心脚と継鉄との接合端を45度とした額縁
形である。FIG. 12 is a perspective view of a tripod iron core of a conventional three-phase transformer, and FIG. 13 is a plan view thereof. As shown in FIGS. 12 and 13, a three-iron core leg 32 ( tripod)
The upper yoke 33 and the lower yoke 33 are arranged on a plane to form the iron core 34. In this case, the method of stacking the steel plates is a frame shape in which the joint end between the iron core leg and the yoke is 45 degrees.
【0006】[0006]
【発明が解決しようとする課題】従来の技術で述べた三
相変圧器の三脚鉄心では、鉄心脚32が平面的に並んで
いるために、左右と中央とでは幾何学的に磁路が異なっ
てくる。このため中央脚の巻線に流れる励磁電流と、左
の外脚の巻線および右の外脚の巻線に流れる励磁電流と
は異なってくるなど、三相間のバランスに不均一を生じ
る結果となっている、という問題点を有していた。In the tripod core of the three-phase transformer described in the prior art, since the iron core legs 32 are arranged in a plane, the magnetic paths are geometrically different between the left and right and the center. Come on. Therefore, the exciting current flowing in the winding of the center leg is different from the exciting current flowing in the winding of the left outer leg and the winding of the right outer leg. It had a problem that it has become.
【0007】本発明は、従来の技術の有するこのような
問題点に鑑みてなされたもので、三相磁路を平衡させ、
鉄心の高さを低くし据付面積を小さくして、鉄心騒音を
低減し、輸送上有利で機械的強度が高い三角配置三脚鉄
心形三相変圧器を提供することを目的とする。The present invention has been made in view of the above problems of the prior art, and balances the three-phase magnetic paths,
An object of the present invention is to provide a triangular tripod core type three-phase transformer that has a low iron core height and a small installation area, reduces iron core noise, is advantageous in transportation, and has high mechanical strength.
【0008】[0008]
【課題を解決するための手段】本発明において、上記の
課題を解決するための手段は、それぞれ所要の幅の磁性
鋼板を、横断面の鋭角の角度が60度で鈍角の角度が1
20度の平行四辺形状に積層してなる複数段の単位ブロ
ックを積み重ねた2組のブロックを突き合わせて60度
の角度で接合して、その外接線が円形になるように積み
上げて形成した3個の鉄心脚の軸の中心をそれぞれ正三
角形の頂点に配置して相互に並立するように配置し、こ
れら3個の鉄心脚の各2脚間の上下を、それぞれ所要の
幅の磁性鋼板を前記鉄心脚との接合部となる長さ方向の
両端が長さ方向と積層方向の角度を60度に積層してな
る複数段の単位ブロックを積み上げて形成した継鉄を、
それぞれ各2個の継鉄の間を60度の角度に配置して接
合した構成とすることにより、三相磁路を平衡させ、鉄
心の高さを低くし据付面積を小さくして、鉄心騒音を低
減し、輸送上有利で機械的強度が高い三相変圧器とした
ものである。Means for Solving the Problems In the present invention, means for solving the above-mentioned problems are as follows: a magnetic steel sheet having a required width is used, and the cross-section has an acute angle of 60 degrees and an obtuse angle of 1
Three blocks formed by stacking multiple sets of unit blocks stacked in a parallelogram shape of 20 degrees, butting together two sets of blocks and joining them at an angle of 60 degrees so that their tangent lines are circular. The cores of the iron core legs are arranged so as to be parallel to each other by arranging the centers of the axes of the iron core legs at the vertices of an equilateral triangle. Yokes formed by stacking a plurality of stages of unit blocks in which both ends in the length direction that are joints with the iron core legs are stacked at an angle of 60 degrees in the length direction and the stacking direction,
By arranging and joining each two yokes at an angle of 60 degrees, the three-phase magnetic paths are balanced, the height of the iron core is lowered, the installation area is reduced, and the iron core noise is reduced. It is a three-phase transformer that is advantageous in transportation and has high mechanical strength.
【0009】磁性鋼板として方向性珪素鋼板または無方
向性珪素鋼板を使用する場合は、鉄心脚と継鉄の各段の
単位ブロックの接合部は中心線に対して30度の角度で
左右にジグザグに交差する線で突き合わせ接合するよう
に配設し、前記鉄心脚の各段の単位ブロックはその台形
の長辺を突き合わせ、この2個の台形の単位ブロックの
面を60度開いたV字形に配置するとともに、鉄心脚の
各段の台形の単位ブロックの上下端部の斜辺部は前記継
鉄の各段の単位ブロックの先端部の斜辺部分と接合した
構成とする。When a grain-oriented silicon steel sheet or a non-oriented silicon steel sheet is used as the magnetic steel sheet, the joint portion of the unit blocks of each stage of the core leg and the yoke is zigzag right and left at an angle of 30 degrees with respect to the center line. Are arranged so that they are butt-joined with each other at a line intersecting with each other, and the long sides of the trapezoids of the unit blocks at each stage of the iron core legs are butted against each other, and the faces of these two trapezoidal unit blocks are formed into a V shape with 60 degrees open. The hypotenuses of the trapezoidal unit blocks of each stage of the iron core leg are joined to the hypotenuses of the tips of the unit blocks of each step of the yoke.
【0010】また、鉄心脚と継鉄の各段の単位ブロック
の珪素鋼板の接合位置をそれぞれの珪素鋼板毎に所要の
一定間隔をおいて交互に移動した1枚おきに同位置で積
層する交互積み構成とするか、または鉄心脚と継鉄の珪
素鋼板の接合位置をそれぞれの珪素交番毎に所要の一定
間隔をおいて順次移動した複数の接合位置で積層するス
テップラップ積み構成のいずれかとする。Further, the joining positions of the silicon steel plates of the unit blocks of each stage of the iron core leg and the yoke are alternately moved at a predetermined fixed interval for each silicon steel plate, and every other one is laminated at the same position alternately. Either the stacking structure or the step lap stacking structure in which the joining positions of the iron core leg and the silicon steel plate of the yoke are sequentially moved at a predetermined fixed interval for each silicon alternation and laminated at a plurality of joining positions .
【0011】磁性鋼板として無方向性珪素鋼板を使用す
る場合は、鉄心脚と継鉄の各段の接合部は短冊形の無方
向性珪素鋼板を交互にL字形に積み重ねて接合する構成
とすることが多い。When a non-oriented silicon steel sheet is used as the magnetic steel sheet, the joining portion of each stage of the iron core leg and the yoke is constructed by alternately stacking strip-shaped non-oriented silicon steel sheets in an L-shape. Often.
【0012】さらに、左右のジグザグ状の鉄心脚と継鉄
の突き合わせ部の空隙部に磁性粉体を注入して硬化させ
て空隙部を埋める構成とすることにより、三相三脚変圧
器の鉄心騒音を低減することができる。Further, the magnetic noise is injected into the gap between the left and right zigzag iron core legs and the yoke butts and hardened to fill the gap, whereby the core noise of the three-phase tripod transformer is reduced. Can be reduced.
【0013】このように三相変圧器の3個の鉄心脚の軸
の中心をそれぞれ正三角形の頂点に配置して相互に並立
するように配置した三角配置とし、鉄心脚と継鉄の磁性
鋼板の各段の単位ブロックを60度の角度で接合して鉄
心を積層する部分を新規の構成とすることにより、三相
磁路を平衡させ、鉄心の高さを低くし据付面積を小さく
して、鉄心騒音を低減し、輸送上有利で機械的強度が高
い三相変圧器としたものである。In this way, the three iron core legs of the three-phase transformer are arranged in such a manner that the axes of the three iron core legs are arranged at the apexes of an equilateral triangle so as to be juxtaposed to each other. By joining the unit blocks of each stage at an angle of 60 degrees to form a new structure of the part where the iron core is laminated, the three-phase magnetic path is balanced, the height of the iron core is reduced, and the installation area is reduced. It is a three-phase transformer that reduces iron core noise, is advantageous in transportation, and has high mechanical strength.
【0014】[0014]
【発明の実施の形態】以下、本発明を図面に示す実施の
形態に基づいて説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below based on an embodiment shown in the drawings.
【0015】図1は本発明の三角配置三脚鉄心形三相変
圧器の実施の形態の鉄心の形状を示す斜視図、図2はそ
の平面図で、図1および図2に示すように、巻線1を巻
回する三つの鉄心脚2(三脚)の軸の中心をそれぞれ正
三角形の頂点に配置して相互に並立するように配設し、
これらの三つの鉄心脚2のそれぞれの上下をヨーク3に
よって接合して磁路を構成し三角配置の三脚の鉄心4を
形成している。FIG. 1 is a perspective view showing the shape of an iron core of an embodiment of a triangularly arranged tripod core type three-phase transformer of the present invention, and FIG. 2 is a plan view thereof, as shown in FIGS. The centers of the axes of the three iron core legs 2 (tripods) around which the wire 1 is wound are arranged at the vertices of an equilateral triangle, and are arranged so as to be in parallel with each other.
The upper and lower sides of each of these three iron core legs 2 are joined by a yoke 3 to form a magnetic path to form a triangular tripod iron core 4.
【0016】図3は本発明の三角配置三脚鉄心形三相変
圧器の実施の形態の継鉄の接合部を示す平面図で、図3
に示すように、巻線の最内側の絶縁筒5の内側に、鉄心
脚2の約半分づつをV字状に60度を持たせて2方向に
積み上げて行く。この場合、それぞれ所要の幅の磁性鋼
板を、各単位ブロック毎に、横断面の鋭角の角度が60
度で鈍角の角度が120度の平衡四辺形状に積層した複
数段の単位ブロックD1、D2、…Dk、…Dnのn段を積
み重ねた2組のブロックを前記60度の鋭角部を突き合
わせて60度の角度で接合して、その外接線が円形にな
るように積み上げて形成した3個の鉄心脚2の軸の中心
を、図1に示すように、それぞれ正三角形の頂点に配置
して相互に並立するように配設する。なお、K1は内
側、K2は外側を示している。FIG. 3 is a plan view showing the joint portion of the yoke of the embodiment of the triangularly arranged tripod core type three-phase transformer of the present invention.
As shown in FIG. 5, approximately half of the iron core legs 2 are stacked in two directions inside the insulating cylinder 5 which is the innermost side of the winding, with each half having a V shape of 60 degrees. In this case, a magnetic steel plate having a required width is used for each unit block with an acute angle of 60 degrees in the cross section.
The two sets of blocks in which n stages of a plurality of stages of unit blocks D 1 , D 2 , ... D k , ... D n stacked in a balanced quadrilateral with an obtuse angle of 120 degrees are acute angle parts of 60 degrees Butt and join at an angle of 60 degrees, and the center of the axis of the three iron core legs 2 formed by stacking them so that their tangents are circular, as shown in FIG. They are arranged so as to be in parallel with each other. Note that K 1 indicates the inside and K 2 indicates the outside.
【0017】これら3個の鉄心脚2の各2脚間の上下
を、それぞれ所要の幅の磁性鋼板を前記鉄心脚との接合
部となる長さ方向の両端が長さ方向と積層方向の角度を
60度に積層してなる複数段の単位ブロックD1、D2、
Dk、…Dnのn段を積み上げて形成した継鉄3を、それ
ぞれ各2個の継鉄3の間を60度の角度に配置して接合
して構成している。The upper and lower portions of each of these three iron core legs 2 are joined together by magnetic steel plates having a required width, and both ends in the length direction that form a joint with the iron core legs form an angle between the length direction and the laminating direction. A plurality of unit blocks D 1 , D 2 ,
The yokes 3 formed by stacking n stages of D k , ... D n are arranged by joining each two yokes 3 at an angle of 60 degrees.
【0018】図4は本発明の三角配置三脚鉄心形三相変
圧器の実施の形態の鉄心のDk段を示す拡大平面図で、
図4に示すように、鉄心脚2または継鉄3は、その積層
方向をD1、D2…Dk、…Dnのn段に分割している。な
お、K1は内側を、K2は外側を示している。磁性鋼板の
1枚づつの先端を鉄心脚2の積み方向と幅方向の角度が
60度の角度になるように積み上げる。FIG. 4 is an enlarged plan view showing the D k stage of the iron core of the embodiment of the triangularly arranged tripod core type three-phase transformer of the present invention.
As shown in FIG. 4, the iron core leg 2 or the yoke 3 is divided in the stacking direction into n stages of D 1 , D 2 ... D k , ... D n . Note that K 1 indicates the inside and K 2 indicates the outside. The tips of the magnetic steel sheets are piled up so that the angle between the direction of stacking the iron core legs 2 and the width direction is 60 degrees.
【0019】図5は本発明の三角配置三脚鉄心形三相変
圧器の実施の形態の継鉄部の60度接合部の形状を示す
平面図(A)と、これと比較するための90度接合部の
平面図(B)で、鉄心脚の積み方向と幅方向の角度が従
来通り90度であると、図5(B)に示すように、空隙
部6′が生じることになる。このため図5(A)に示す
ように、鉄心の積み方向と幅方向の角度を60度にする
ことにより空隙部6′を小さくすることができる。FIG. 5 is a plan view (A) showing the shape of the 60-degree joint portion of the yoke portion of the embodiment of the triangular-arranged tripod core type three-phase transformer of the present invention, and a 90-degree view for comparison therewith. When the angle between the stacking direction and the width direction of the iron core leg in the plan view (B) of the joint is 90 degrees as in the conventional case, a void portion 6'is generated as shown in FIG. 5 (B). Therefore, as shown in FIG. 5 (A), the gap 6'can be made small by setting the angle between the stacking direction and the width direction of the iron core to be 60 degrees.
【0020】図6は本発明の三角配置三脚鉄心形三相変
圧器の実施の形態の鉄心脚の断面図と継鉄の断面図で、
図6に示すように、継鉄3は鉄心脚2との60度の接合
に合わせて継鉄の長手方向を徐々にずらせていく。FIG. 6 is a sectional view of an iron core leg and a sectional view of a yoke of an embodiment of a triangularly arranged tripod core three-phase transformer of the present invention.
As shown in FIG. 6, the yoke 3 is gradually shifted in the longitudinal direction of the yoke in accordance with the joining with the core leg 2 at 60 degrees.
【0021】図7は本発明の三角配置三脚鉄心形三相変
圧器の実施の形態の鉄心脚と継鉄のDk段の単位ブロッ
クの最外側の接合形状を示す説明図、図8は本発明の三
角配置三脚鉄心形三相変圧器の実施の形態の鉄心脚と継
鉄のDk段の最内側の接合形状を示す説明図で、V相の
鉄心脚の場合を示す。ここで、7はU相側継鉄の鋼板、
8はU相側のV相鉄心脚の鋼板、9はW相側のV相鉄心
脚の鋼板、10はW相側継鉄の鋼板である。図7および
図8に示すように、鉄心脚2と継鉄3の各段の単位ブロ
ックの接合部は図3に示すように、中心線に対して30
度の角度で左右にジグザグに交差する線で突き合わせ接
合するように配設し、前記鉄心脚2の各段の単位ブロッ
クの鋼板、すなわち、U相側のV相鉄心脚の鋼板8とW
相側のV相鉄心脚の鋼板9はその台形の鋼板の長辺を突
き合わせ、この2枚の台形の鋼板の面を60度開いたV
字形に配置するとともに、鉄心脚2の各段の単位ブロッ
クの台形の鋼板8の上下端部の斜辺は前記継鉄3の各段
の単位ブロックの台形の鋼板7の先端部の斜辺部分と、
単位ブロックの台形の鋼板9の上下端部の斜辺は前記継
鉄3の各段の単位ブロックの台形の鋼板10の先端部の
斜辺部分と接合して形成される。U相またはW相の鉄心
脚の場合もV相の鉄心脚と同様である。FIG. 7 is an explanatory view showing the outermost joint shape of the core block and the unit block of the D k stage of the yoke in the embodiment of the triangularly arranged tripod core three-phase transformer of the present invention, and FIG. FIG. 3 is an explanatory view showing an innermost joint shape of the iron core leg and the yoke at the D k stage of the embodiment of the triangular-arranged tripod core type three-phase transformer of the present invention, showing a case of the V-phase iron core leg. Here, 7 is a U-phase side yoke steel plate,
8 is a steel plate of a V-phase iron core leg on the U-phase side, 9 is a steel plate of a V-phase iron core leg on the W-phase side, and 10 is a steel plate of a W-phase side yoke. As shown in FIG. 7 and FIG. 8, the joint portion of the unit block of each stage of the iron core leg 2 and the yoke 3 is 30 with respect to the center line as shown in FIG.
The steel plates of the unit blocks of each stage of the iron core leg 2, that is, the steel plates 8 and W of the V-phase iron core leg on the U-phase side are arranged so as to be butt-joined to each other in a zigzag crossing direction at right and left angles.
The steel plate 9 of the V-phase iron core leg on the phase side is formed by abutting the long sides of the trapezoidal steel plates and opening the faces of these two trapezoidal steel plates by 60 degrees.
The hypotenuses of the trapezoidal steel plates 8 of the unit blocks of the respective steps of the iron core leg 2 are the hypotenuses of the tip ends of the trapezoidal steel plates 7 of the unit blocks of the respective steps of the yoke 3,
The hypotenuses of the upper and lower ends of the trapezoidal steel plate 9 of the unit block are formed by being joined to the hypotenuses of the tips of the trapezoidal steel plates 10 of the unit blocks of each step of the yoke 3. The case of the U-phase or W-phase iron core leg is the same as that of the V-phase iron core leg.
【0022】ここで、図3におけるK2側(外側)を図
7に示す形状の接合とし、図3におけるK1側(内側)
を図8に示す形状の接合とし、H1/(H1+H2)の値
を10〜50%とし、K1に近付くにつれてこの値を大
きくし、K2に近付くにつれてこの値を小さくし、K2に
おいては図8の形状の接合形状になる。Here, the K 2 side (outer side) in FIG. 3 is a joint having the shape shown in FIG. 7, and the K 1 side (inner side) in FIG.
And the value of H 1 / (H 1 + H 2 ) is 10 to 50%, the value increases as it approaches K 1, and the value decreases as it approaches K 2 , At K 2 , the joint shape becomes the shape shown in FIG.
【0023】図9は本発明の三角配置三脚鉄心形三相変
圧器の実施の形態の鉄心脚と継鉄のDk段の接合部にお
いて、鋼板毎に所要の一定間隔を置いて接続位置を交互
に移動させて積層する交互積みとした接合部の形状を示
す説明図で、図7および図8と同様に、V相の鉄心脚の
場合を示す。ここで、11はU相側継鉄の鋼板、12は
U相側のV相鉄心脚の鋼板、13はW相側のV相鉄心脚
の鋼板、14はW相側継鉄の鋼板である。図9に示すよ
うに、U相側継鉄部の鋼板11とU相側のV相鉄心脚の
鋼板12およびW相側のV相鉄心脚の鋼板13とW相側
継鉄の鋼板14はそれぞれ鋼板毎に所要のラップ代(所
要の間隔)αをおいて接続位置を交互に移動させて接続
している。U相またはW相の鉄心脚の場合もV相の場合
と同様である。FIG. 9 shows the connecting positions of the steel plates at the joints of the Dk stages of the core legs and yokes of the embodiment of the triangularly arranged three-leg iron core type three-phase transformer of the present invention with a certain fixed interval for each steel plate. It is explanatory drawing which shows the shape of the junction part alternately moved and laminated | stacked, and the case of a V-phase iron core leg is shown like FIG. 7 and FIG. Here, 11 is a steel plate of a U-phase side yoke, 12 is a steel plate of a U-phase side V-phase core leg, 13 is a steel plate of a W-phase side V-phase core leg, and 14 is a steel plate of a W-phase side yoke. . As shown in FIG. 9, the steel plate 11 of the U-phase side yoke part, the steel plate 12 of the U-phase side V-phase core leg, the steel plate 13 of the W-phase side V-phase core leg and the steel plate 14 of the W-phase side yoke are The connection positions are alternately moved and connected with a required lap margin (required interval) α for each steel plate. The case of the U-phase or W-phase iron core leg is the same as that of the V-phase.
【0024】図10は本発明の三角配置三脚鉄心形三相
変圧器の実施の形態の鉄心脚と継鉄の各単位ブロックの
接合部の詳細を示す展開図で、図10に示すように、鉄
心脚2の鋼板15と継鉄3の鋼板16の対角線の両側で
所要のラップ代αをあけた位置で交互に接合する。な
お、先端の45度の部分の外側の出っ張り部17は切り
落とす。FIG. 10 is a development view showing the details of the joint portion of each unit block of the iron core leg and the yoke in the embodiment of the triangularly arranged three-leg iron core type three-phase transformer of the present invention. As shown in FIG. The steel plate 15 of the iron core leg 2 and the steel plate 16 of the yoke 3 are alternately joined on both sides of the diagonal line at a position where a required lapping margin α is provided. The protruding portion 17 outside the 45 ° portion of the tip is cut off.
【0025】図11は本発明の三角配置三脚鉄心形三相
変圧器の実施の形態の鉄心脚と継鉄のDk段の接合部に
おいて、珪素鋼板毎に所要のラップ代をおいて順次移動
した複数の接合位置で積層するステップラップ積みした
接合部の形状を示す説明図で、図7と同様にV相の鉄心
脚の場合を示す。ここで、18はU相側継鉄の鋼板、1
9はU相側のV相鉄心脚の鋼板、20はW相側のV相鉄
心脚の鋼板、21はW相側継鉄の鋼板である。図11に
示すように、U相側継鉄の鋼板18とはU相側のV相鉄
心脚19およびW相側のV相鉄心脚の鋼板20とW相側
継鉄の鋼板21はそれぞれ方向性珪素鋼板毎に所要のラ
ップ代αをおいて接続位置を順次移動させて接続してい
る。この場合、接続位置の移動は数箇所毎に元の位置に
戻って同じ間隔で移動して繰り返し循環して積層する。
U相またはW相の鉄心脚の場合もU相鉄心脚の場合と同
様である。FIG. 11 is a diagram showing an embodiment of the triangularly arranged tripod core type three-phase transformer according to the present invention, in which the core legs and the yokes are joined at the D k step, the silicon steel sheets are sequentially moved with a required lap margin. It is explanatory drawing which shows the shape of the joining part laminated | stacked by step lap laminated | stacked in the said several joining position, and shows the case of a V-phase iron core leg like FIG. Here, 18 is a steel plate of the U-phase side yoke, 1
9 is a steel plate of the V-phase iron core leg on the U-phase side, 20 is a steel plate of the V-phase iron core leg on the W-phase side, and 21 is a steel plate of the W-phase side yoke. As shown in FIG. 11, the steel plate 18 of the U-phase side yoke is the V-phase iron core leg 19 on the U-phase side, the steel plate 20 of the V-phase side V-core core leg on the W-phase side, and the steel plate 21 of the W-phase side yoke are in the respective directions. The connection position is sequentially moved and the connection is performed with a required lapping margin α for each silicon steel sheet. In this case, the connection position is moved back to the original position at every several positions, moved at the same interval, and repeatedly circulated for stacking.
The case of the U-phase or W-phase iron core leg is the same as that of the U-phase iron core leg.
【0026】磁性鋼板として無方向性珪素鋼板を使用す
る場合は、鉄心脚と継鉄の各段の接合部は短冊形の無方
向性珪素鋼板を交互にL字形に積み重ねて接合する構成
とする。When a non-oriented silicon steel sheet is used as the magnetic steel sheet, the joining portion of each stage of the core leg and yoke is constructed by alternately stacking strip-shaped non-oriented silicon steel sheets in an L-shape. .
【0027】なお、図3に示すK1,K2を中心とする左
右のジグザグ状の突き合わせは、細かく見ると、1枚1
枚の磁性鋼板(方向性珪素鋼板や無方向性珪素鋼板な
ど)は、直角に切断されているため、図4に示すような
空隙部6が存在している。この空隙部6に磁性粉体を注
入して硬化させて空隙部を埋めて磁気特性を改善するこ
とができる。Incidentally, the left and right zigzag-shaped abutting around K 1 and K 2 shown in FIG.
Since one magnetic steel plate (oriented silicon steel plate, non-oriented silicon steel plate, etc.) is cut at a right angle, a void portion 6 as shown in FIG. 4 exists. Magnetic properties can be improved by injecting magnetic powder into the voids 6 and curing the powder to fill the voids.
【0028】[0028]
【発明の効果】本発明の三角配置三脚鉄心形三相変圧器
の鉄心は、鉄心脚を三脚配置とし、鉄心ヨークを60度
で接合する鉄心脚を積層した構造として構成されている
ので、次に記載する効果を奏する。Since the iron core of the triangularly arranged tripod core type three-phase transformer of the present invention has a structure in which the iron core legs are arranged in a tripod and the iron core yokes that join the iron core yoke at 60 degrees are laminated, Has the effect described in.
【0029】(1)幾何学的な磁路が三相とも等しくな
り、三相不均一が生じない。(1) The geometrical magnetic paths are the same in all three phases, and three-phase nonuniformity does not occur.
【0030】(2)鉄心脚の三角配置により、変圧器の
据付面積を小さくすることが可能となる。(2) The triangular arrangement of the iron core legs makes it possible to reduce the installation area of the transformer.
【0031】(3)理論的には三角配置三脚鉄心の継鉄
の磁束は鉄心脚の磁束の約58%であるから、上下の継
鉄の断面積が鉄心脚の断面積の約58%でよくなり、し
たがって、鉄心の高さを低減できる。(3) Theoretically, the magnetic flux of the yoke of the triangularly arranged tripod iron core is about 58% of the magnetic flux of the iron core leg, so the cross-sectional area of the upper and lower yokes is about 58% of the cross-sectional area of the iron core leg. It improves, and therefore the height of the iron core can be reduced.
【0032】(4)鉄心高さの低減により、輸送上、有
利である。(4) The reduction of the iron core height is advantageous in transportation.
【0033】(5)磁気回路が三相平衡するので、騒音
が低下する。(5) Noise is reduced because the magnetic circuit is three-phase balanced.
【0034】(6)異なった方向の鉄心を組み合わせる
際に、接合部を直線にしないで左右のジグザグ状に突き
合わせたので、機械的強度が高まる。(6) When assembling iron cores in different directions, the joints are abutted in a zigzag pattern on the left and right instead of being straight, so that the mechanical strength is increased.
【0035】(7)鉄心脚の鋼板どうし、あるいは継鉄
の鋼板どうしの端部の接合部を60度の角度で揃えて積
層したので空隙が少なくなり、磁気特性改善、鉄心騒音
の低下する。(7) Since the steel plates of the iron core legs or the joints of the ends of the steel plates of the yoke are aligned at an angle of 60 degrees, the voids are reduced, the magnetic characteristics are improved, and the core noise is reduced.
【0036】(8)左右のジグザグ状の鉄心脚と継鉄の
空隙部に磁性粉体を注入して硬化させて空隙部を埋めて
ることにより鉄心騒音を減少させ、磁気特性を改善する
ことができる。(8) Magnetic noise is reduced and magnetic characteristics are improved by injecting magnetic powder into the voids of the left and right zigzag-shaped iron core legs and yokes and hardening them to fill the voids. it can.
【図1】本発明の三角配置三脚鉄心形三相変圧器の実施
の形態の鉄心の形状を示す斜視図。FIG. 1 is a perspective view showing the shape of an iron core according to an embodiment of a triangular arrangement tripod core type three-phase transformer of the present invention.
【図2】本発明の三角配置三脚鉄心形三相変圧器の実施
の形態の鉄心の形状を示す平面図。FIG. 2 is a plan view showing the shape of an iron core according to an embodiment of a triangularly arranged tripod core three-phase transformer of the present invention.
【図3】本発明の三角配置三脚鉄心形三相変圧器の実施
の形態の鉄心の形状を示す平面図。FIG. 3 is a plan view showing the shape of the iron core of the embodiment of the triangularly arranged tripod core type three-phase transformer of the present invention.
【図4】本発明の三角配置三脚鉄心形三相変圧器の実施
の形態の鉄心のDk段の形状を示す拡大平面図。FIG. 4 is an enlarged plan view showing the shape of the D k step of the iron core of the embodiment of the triangularly arranged tripod core type three-phase transformer of the present invention.
【図5】本発明の三角配置三脚鉄心形三相変圧器の実施
の形態において、継鉄を60度で接合した接合部の形状
を示す平面図(A)と、この平面図(A)と比較するた
めに継鉄部を90度で接合した接合部の平面図(B)。FIG. 5 is a plan view (A) showing a shape of a joint portion in which yokes are joined at 60 degrees in the embodiment of the triangular arrangement tripod core type three-phase transformer of the present invention, and this plan view (A). The top view (B) of the joining part which joined the yoke part at 90 degrees for comparison.
【図6】本発明の三角配置三脚鉄心形三相変圧器の実施
の形態の鉄心脚を示す断面図および継鉄部を示す断面
図。6A and 6B are a cross-sectional view showing an iron core leg and a cross-sectional view showing a yoke portion of an embodiment of a triangular arrangement tripod core three-phase transformer of the present invention.
【図7】本発明の三角配置三脚鉄心形三相変圧器の実施
の形態の鉄心脚と継鉄のDk段の最外側の接合形状を示
す説明図。FIG. 7 is an explanatory view showing the outermost joint shape of the core leg and the yoke at the D k stage of the embodiment of the triangularly arranged tripod core three-phase transformer of the present invention.
【図8】本発明の三角配置三脚鉄心形三相変圧器の実施
の形態の鉄心脚と継鉄のDk段の最内側の接合形状を示
す説明図。FIG. 8 is an explanatory view showing the innermost joint shape of the core leg and the yoke at the D k stage in the embodiment of the triangularly arranged tripod core three-phase transformer of the present invention.
【図9】本発明の三角配置三脚鉄心形三相変圧器の実施
の形態の鉄心脚と継鉄のDk段の接合部において、鋼板
毎に所要の一定間隔を置いて交互に移動させて積層する
交互積みとした接合部の形状を示す説明図。FIG. 9 is a diagram showing an embodiment of a triangular-arranged tripod core type three-phase transformer of the present invention, in which a D k stage joint of an iron core leg and a yoke is moved alternately at a required constant interval for each steel plate. Explanatory drawing which shows the shape of the junction part made into the laminated | stacked alternating stack.
【図10】本発明の三角配置三脚鉄心形三相変圧器の実
施の形態の鉄心脚と継鉄の各単位ブロックの接合部の詳
細を示す展開図。FIG. 10 is a development view showing details of a joint portion of each unit block of an iron core leg and a yoke of an embodiment of a triangularly arranged tripod core three-phase transformer of the present invention.
【図11】本発明の三角配置三脚鉄心形三相変圧器の実
施の形態の鉄心脚と継鉄のDk段の接合部において、鋼
板毎に所要の一定間隔を置いて順次移動した複数の接合
位置で積層するステップラップ積みとした接合部の形状
を示す説明図。FIG. 11 is a view showing a plurality of Dk- stage joints of an iron core leg and a yoke of the embodiment of the triangular-arranged tripod core type three-phase transformer of the present invention, which are sequentially moved at predetermined constant intervals for each steel plate. Explanatory drawing which shows the shape of the joining part which carried out the step lap stacking laminated | stacked at a joining position.
【図12】従来の三相変圧器の三脚鉄心の平面図。FIG. 12 is a plan view of a tripod core of a conventional three-phase transformer.
【図13】従来の三相変圧器の三脚鉄心の平面図。FIG. 13 is a plan view of a tripod core of a conventional three-phase transformer.
1…巻線 2…鉄心脚 3…継鉄 4…鉄心 5…絶縁筒 6,6′…空隙部 7,11,18…U相側の継鉄の鋼板 8,12,19…U相側のV相鉄心後の鋼板 9,13,20…W相側のV相鉄心脚の鋼板 10,14,21…W相側の継鉄の鋼板 15…鉄心脚の鋼板 16…継鉄の鋼板 17…出っ張り部 D1,D2,Dk,Dn…ブロックの段数 H1…継鉄先端の直線部の幅 H2…継鉄先端の斜辺部の幅 K1−K2…中心線 α…鋼板のラップ代1 ... Winding 2 ... Iron core leg 3 ... Yoke 4 ... Iron core 5 ... Insulation cylinder 6,6 '... Void 7, 11, 18 ... Steel plate of U-phase side yoke 8, 12, 19 ... U-phase side Steel plate after V phase iron core 9,13,20 ... Steel plate of V phase iron core leg on W phase side 10, 14, 21 ... Steel plate of yoke iron on W phase side 15 ... Steel plate of iron core leg 16 ... Steel plate of yoke iron 17 ... Projection D 1 , D 2 , D k , D n … Number of blocks H 1 … Width of straight part of yoke tip H 2 … Width of hypotenuse of yoke tip K 1 −K 2 … Center line α… Steel plate Lap fee
Claims (6)
の鋭角の角度が60度で鈍角の角度が120度の平行四
辺形状に積層してなる複数段の単位ブロックを積み重ね
た2組のブロックを突き合わせて60度の角度で接合し
て、その外接線が概略円形になるように積み上げて形成
した3個の鉄心脚の軸の中心をそれぞれ正三角形の頂点
に配置して相互に並立するように配設し、これら3個の
鉄心脚の各2脚間の上下に、それぞれ所要の幅の磁性鋼
板を前記鉄心脚との接合部となる長さ方向の両端が長さ
方向と積層方向の角度を60度に積層してなる複数段の
単位ブロックを積み上げて形成した継鉄を、それぞれ各
2個の鉄心脚の間に60度の角度に配置して接合して構
成したことを特徴とする三角配置三脚鉄心形三相変圧
器。1. Two sets of unit blocks are stacked by stacking magnetic steel sheets each having a required width into a parallelogram shape having a transverse cross-section with an acute angle of 60 degrees and an obtuse angle of 120 degrees. The blocks are butted and joined at an angle of 60 degrees, and the axes of the three iron core legs formed by stacking them so that their outer tangent lines are approximately circular are arranged at the vertices of an equilateral triangle and stand side by side. The magnetic steel plates having a required width are provided above and below each of the two legs of the three iron core legs. It is characterized in that the yokes formed by stacking unit blocks of multiple stages that are stacked at an angle of 60 degrees are arranged and joined at an angle of 60 degrees between each two core legs. Triangle iron core type three-phase transformer.
方向性珪素鋼板であり、鉄心脚と鉄心脚および継鉄と継
鉄の各段の単位ブロックの接合部は中心線に対して30
度の角度で左右にジグザグに交差する線で突き合わせ接
合するように配設し、前記鉄心脚の各段の単位ブロック
はその台形の長辺を突き合わせ、この2個の台形の単位
ブロックの面を60度開いたV字形に配置するととも
に、鉄心脚の各段の台形の単位ブロックの上下端部の斜
辺は前記継鉄の各段の単位ブロックの先端部の斜辺部分
と接合して形成したことを特徴とする請求項1に記載の
三角配置三脚鉄心形三相変圧器。2. The magnetic steel sheet is a grain-oriented silicon steel sheet or a non-oriented silicon steel sheet, and the joint portion of the core leg and the core leg and the unit block of each step of the yoke and the yoke is 30 with respect to the center line.
It is arranged so as to be butt-joined to each other at a line intersecting in a zigzag manner at right and left angles, and the long sides of the trapezoids of the unit blocks at each stage of the iron core legs are butted, and the faces of these two trapezoidal unit blocks The hypotenuses of the upper and lower ends of the trapezoidal unit block of each stage of the iron core leg are arranged to be arranged in a V shape opened by 60 degrees, and are joined to the hypotenuse part of the tip of the unit block of each stage of the yoke. The tripod core type three-phase transformer having a triangular arrangement according to claim 1, wherein
の珪素鋼板の接合位置を、それぞれの珪素鋼板毎に所要
の一定間隔をおいて交互に移動して積層する交互積みと
したことを特徴とする請求項2に記載の三角配置三脚鉄
心形三相変圧器。3. The joining positions of the silicon steel plates of the unit blocks of the respective stages of the iron core leg and the yoke are alternated stacks in which the silicon steel plates are alternately moved and laminated at predetermined constant intervals for each silicon steel plate. The tripod core type three-phase transformer with triangular arrangement according to claim 2, wherein
の珪素鋼板の接合位置をそれぞれの珪素鋼板毎に所要の
一定間隔をおいて順次移動した複数の接合位置で積層す
るステップラップ積みとしたことを特徴とする請求項2
に記載の三角配置三脚鉄心形三相変圧器。4. A step lap stacking in which the joining positions of the silicon steel plates of the unit blocks of each stage of the iron core leg and the yoke are sequentially moved at a predetermined constant interval for each silicon steel plate at a plurality of joining positions. 3. The method according to claim 2, wherein
Triangle iron core type three-phase transformer as described in.
り、鉄心脚と継鉄の各段の接合部は短冊形の無方向性珪
素鋼板を交互にL字形に積み重ねて接合したことを特徴
とする請求項1に記載の三角配置三脚鉄心形三相変圧
器。5. The magnetic steel sheet is a non-oriented silicon steel sheet, and the joining portions of each stage of the core leg and yoke are formed by alternately stacking strip-shaped non-oriented silicon steel sheets and joining them in an L-shape. The tripod iron core type three-phase transformer having a triangular arrangement according to claim 1.
合わせ部の空隙部に磁性粉体を注入して硬化させて空隙
部を埋めて形成したことを特徴とする請求項2ないし請
求項5のいずれかに記載の三角配置三脚鉄心形三相変圧
器。6. The method according to claim 2, wherein the magnetic powder is injected into the gaps between the left and right zigzag-shaped iron core legs and the yokes, and the gaps are filled to fill the gaps. 5. A tripod iron core type three-phase transformer having a triangular arrangement according to any one of 5 above.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8034664A JPH09232164A (en) | 1996-02-22 | 1996-02-22 | Triangularly arranged tripod-core type three-phase transformer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8034664A JPH09232164A (en) | 1996-02-22 | 1996-02-22 | Triangularly arranged tripod-core type three-phase transformer |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH09232164A true JPH09232164A (en) | 1997-09-05 |
Family
ID=12420711
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8034664A Pending JPH09232164A (en) | 1996-02-22 | 1996-02-22 | Triangularly arranged tripod-core type three-phase transformer |
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Country | Link |
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JP (1) | JPH09232164A (en) |
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JP2003522407A (en) * | 2000-02-06 | 2003-07-22 | ヘグルンド、レンナルト | Transformer core |
JP2004055773A (en) * | 2002-07-19 | 2004-02-19 | Nippon Steel Corp | Transformer |
WO2010024153A1 (en) | 2008-08-25 | 2010-03-04 | 株式会社精電製作所 | Three-phase high frequency transformer |
JP2010520636A (en) * | 2007-03-07 | 2010-06-10 | ヘクサフォーマー・アクチボラゲット | Transformer structure |
KR101154813B1 (en) * | 2010-10-26 | 2012-06-13 | 한양전기공업(주) | Transformer with a unit core |
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-
1996
- 1996-02-22 JP JP8034664A patent/JPH09232164A/en active Pending
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WO2010024153A1 (en) | 2008-08-25 | 2010-03-04 | 株式会社精電製作所 | Three-phase high frequency transformer |
US10115514B2 (en) | 2008-08-25 | 2018-10-30 | Seiden Mfg. Co., Ltd. | Three-phase high frequency transformer |
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CN102725947A (en) * | 2009-09-18 | 2012-10-10 | 方德济 | Direct-drive electric equipment |
KR101154813B1 (en) * | 2010-10-26 | 2012-06-13 | 한양전기공업(주) | Transformer with a unit core |
CN102938298A (en) * | 2012-09-05 | 2013-02-20 | 广东岭先技术投资企业(有限合伙) | Transformer iron core and manufacturing method thereof |
CN102938298B (en) * | 2012-09-05 | 2016-01-06 | 广东岭先技术投资企业(有限合伙) | Transformer core and manufacture method thereof |
CN103280310A (en) * | 2013-06-17 | 2013-09-04 | 江苏中容科技有限公司 | Method for binding iron cores of transformer with wound stereoscopic triangular iron core before annealing |
JP2016122830A (en) * | 2014-10-29 | 2016-07-07 | ゼネラル・エレクトリック・カンパニイ | Filter assembly and method |
US10008322B2 (en) | 2014-10-29 | 2018-06-26 | General Electric Company | Filter assembly and method |
CN105990004A (en) * | 2015-02-25 | 2016-10-05 | 上海稳得新能源科技有限公司 | Stereo lamination type zero-clearance magnetic circuit three-phase transformer |
CN105990004B (en) * | 2015-02-25 | 2020-12-04 | 上海稳得新能源科技有限公司 | Three-dimensional laminated zero-gap magnetic circuit three-phase transformer |
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