WO2013075268A1 - Triangular transformer iron core of amorphous alloy - Google Patents

Triangular transformer iron core of amorphous alloy Download PDF

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Publication number
WO2013075268A1
WO2013075268A1 PCT/CN2011/001961 CN2011001961W WO2013075268A1 WO 2013075268 A1 WO2013075268 A1 WO 2013075268A1 CN 2011001961 W CN2011001961 W CN 2011001961W WO 2013075268 A1 WO2013075268 A1 WO 2013075268A1
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Prior art keywords
iron
iron core
amorphous alloy
iron yoke
core
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PCT/CN2011/001961
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French (fr)
Chinese (zh)
Inventor
吴茂安
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浙江金三角变压器有限公司
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Priority to PCT/CN2011/001961 priority Critical patent/WO2013075268A1/en
Publication of WO2013075268A1 publication Critical patent/WO2013075268A1/en

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/24—Magnetic cores
    • H01F27/25—Magnetic cores made from strips or ribbons
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H01F41/0206—Manufacturing of magnetic cores by mechanical means
    • H01F41/0213—Manufacturing of magnetic circuits made from strip(s) or ribbon(s)
    • H01F41/0226—Manufacturing of magnetic circuits made from strip(s) or ribbon(s) from amorphous ribbons

Definitions

  • the present invention relates to a transformer core, and more particularly to an amorphous alloy triangular transformer core.
  • the existing three-phase amorphous alloy transformer core adopts a four-frame five-column structure or a three-frame three-column structure, and the iron core column has a rectangular cross section.
  • the iron yoke of one end of the single-frame iron core needs to be disconnected at each end to form a mitered seam.
  • each layer of the iron yoke is opened one by one at the break, and the coil is set on the iron core column. Then they are closed one by one, and the joints are glued with special glue.
  • This iron core structure has many disadvantages.
  • the joints are likely to cause low-frequency chattering, which causes a large The noise.
  • the magnetic flux density in the iron yoke of the iron core is 155 times that of the magnetic flux density in the iron core, so that it also causes an increase in the no-load loss of the iron core.
  • the object of the present invention is to design an amorphous alloy triangular transformer core to reduce the no-load loss of the core, reduce the noise of the transformer, and save the copper material consumed by the coil.
  • the amorphous alloy triangular transformer core includes a core post and an upper iron yoke at an upper end of the iron core and a lower iron yoke at a lower end of the iron core, characterized in that: the iron The stem is composed of the same independent first, second and third iron core columns, each of which has the same height and is wound by two or more amorphous alloy strips.
  • each of the core legs has a circular through hole; the upper iron yoke is the same as the lower iron yoke, and is respectively a triangular-shaped frame wound by an equal-width amorphous alloy strip.
  • the center holes of the upper and lower iron yokes are equilateral triangles, and their outer edges are equilateral triangles with rounded corners.
  • the thickness of the upper and lower iron yokes is equal to the diameter of the iron core column, and the effective cross-sectional area of the upper and lower iron yokes.
  • the first iron core pillar, the second iron core pillar and the third iron core pillar are vertically butted with the upper and lower iron yokes respectively, and are located at the upper and lower iron yokes 3 of the rounded corners, and 3 of the circles respectively Inscribed in the corner.
  • the center of the cross section of the first core leg, the second core leg and the third core leg constitutes an equilateral triangle.
  • the invention has the advantages that: the transformer core adopts a triangular three-dimensional arrangement structure, the length of each phase iron yoke is the same and the shortest, and the iron core column and the iron yoke are continuously wound by the amorphous alloy strip, without seams and In the gap, the core has a circular cross section. Therefore, it has low no-load loss, low noise, and saves copper, and because the iron core column and the upper and lower iron yokes are vertically butted, the package of the high and low voltage coils of the transformer is greatly facilitated.
  • Figure 1 is a structural view of the present invention
  • Figure 2 is a structural view of Figure 1 with the upper iron yoke removed
  • Figure 3 is a plan view of Figure 2
  • the amorphous alloy triangular transformer core comprises a core column and an upper iron yoke 4 at an upper end of the iron core column and a lower iron yoke 5 at a lower end of the iron core column, the iron core column being identical
  • Each of the first iron core column 1, the second iron core column 2 and the third iron core column 3 are composed of independent cores, each of which has the same height and is wound by two or more amorphous alloy strips.
  • the upper iron yoke 4 is identical to the lower iron yoke 5, and is respectively wound from respective continuous amorphous alloy strips of equal width a triangular-shaped frame, the center holes of the upper iron yoke 4 and the lower iron yoke 5 are equilateral triangles, and the outer edges of the upper iron yoke 4 and the lower iron yoke 5 are equilateral triangles with rounded corners;
  • the first core The column 1, the second core post 2 and the third core stud 3 are vertically butted against the upper iron yoke 4 and the lower iron yoke 5, respectively, and are located on the three rounded corners of the upper iron yoke 4 and the lower iron yoke 5, And respectively inscribed with three of the rounded corners;
  • the center of the cross section of the first iron core column 1, the second iron core column 2 and the third iron core column 3 constitutes a a side triangle;
  • the entire amorphous alloy triangular transformer core consists of two parts, namely three identical core legs and upper and lower iron yokes 4, 5.
  • a cylindrical mandrel is clamped on the winder, and then an equal-width amorphous alloy strip is tightly and neatly wound on the mandrel to form an amorphous bond.
  • Gold cylinders after winding, send them to a special annealing furnace and apply magnetic field annealing at 350 °C - 450 °C.
  • the two end faces of the annealed amorphous alloy cylinders should be evenly coated with special glue. Or two or more amorphous alloy cylinders are stacked together to form a core column.
  • the upper iron yoke 4 and the lower iron yoke 5 are manufactured, and the amorphous alloy strip having an equal width according to the design requirement can be wound on the triangular shaped core block so that the thickness of the upper iron yoke 4 and the lower iron yoke 5 are equal to iron.
  • the diameter of the stem in order to make the magnetic flux density in the upper and lower iron yokes 4, 5 less than or equal to the magnetic flux density in the iron core, we make the effective cross-sectional area of the upper and lower iron yokes 4, 5 greater than or equal to The multiple of the effective cross section of the iron core.
  • the rolled upper and lower iron yokes 4 and 5 are also subjected to vacuum and magnetic field annealing treatment to eliminate internal stress and reduce iron loss.
  • the inner frame of the upper iron yoke 4 and the lower iron yoke 5 is an equilateral triangle, and the frame is an equilateral triangle shape with three rounded corners, and the three rounded corners are respectively cut in cross section with each of the core legs.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacturing Cores, Coils, And Magnets (AREA)

Abstract

Disclosed is a triangular transformer iron core of an amorphous alloy, composed of three identical iron core posts (1, 2, 3) formed of coiled amorphous alloy strips, the posts abutting at right angles an upper and a lower iron yoke (4, 5). The transverse section of each iron core post is circular, and the upper and lower iron yokes (4, 5) use coiled amorphous alloy strips of equal width to form frames of identical triangular shape. A transformer made from the iron core enables a low core loss, a low noise level, low consumption, and a good performance in terms of the impact of short circuits.

Description

非晶合金三角形变压器铁芯  Amorphous alloy triangular transformer core
技术领域 Technical field
本发明涉及一种变压器铁芯， 具体地说是一种非晶合金三角形变压 器铁芯。  The present invention relates to a transformer core, and more particularly to an amorphous alloy triangular transformer core.
背景技术 Background technique
现有的三相非晶合金变压器铁芯， 都釆用四框五柱结构或三框三柱 结构， 其铁芯柱横截面呈矩形。为了套装变压器线圈， 其单框铁芯的一端 铁轭每层都需断开， 形成斜接缝， 在装配线圈时， 将铁轭每层在断开处逐 一打开， 线圈套装在铁芯柱上后再逐一合拢， 接缝处用专用胶水粘接。  The existing three-phase amorphous alloy transformer core adopts a four-frame five-column structure or a three-frame three-column structure, and the iron core column has a rectangular cross section. In order to set the transformer coil, the iron yoke of one end of the single-frame iron core needs to be disconnected at each end to form a mitered seam. When assembling the coil, each layer of the iron yoke is opened one by one at the break, and the coil is set on the iron core column. Then they are closed one by one, and the joints are glued with special glue.
这种铁芯结构有许多缺点， 首先铁芯柱的矩形横截面比圆形横截面 在线圈匝数相同的情况下， 要多消耗 11.4%的铜材； 其次由于每个单框铁 芯的一端铁轭都断开，形成斜接缝，磁阻增加，铁芯的空载损耗随之增加， 变压器运行时， 在交流磁场的作用下， 其接缝处极易引起低频颤动， 从而 产生很大的噪音。另外，这种铁芯的铁轭中的磁通密度是铁芯柱中磁通密 度的 1 . 155倍， 因此它也导致了铁芯的空载损耗增加。  This iron core structure has many disadvantages. First, the rectangular cross section of the iron core column consumes 11.4% more copper than the circular cross section in the same number of turns of the coil; secondly, because of the end of each single frame iron core The iron yokes are disconnected, forming a slant joint, the magnetic resistance is increased, and the no-load loss of the iron core is increased. When the transformer is running, under the action of the alternating magnetic field, the joints are likely to cause low-frequency chattering, which causes a large The noise. In addition, the magnetic flux density in the iron yoke of the iron core is 155 times that of the magnetic flux density in the iron core, so that it also causes an increase in the no-load loss of the iron core.
发明内容 Summary of the invention
本发明的目的在于设计一种非晶合金三角形变压器铁芯， 以减小铁 芯的空载损耗， 降低变压器的噪声， 并节约线圈所消耗的铜材。按照本发 明提供的技术方案，所述非晶合金三角形变压器铁芯，包括铁芯柱与位于 铁芯柱上端的上铁轭和位于铁芯柱下端的下铁轭，其特征是：所述铁芯柱 由相同的各自独立的第一铁芯柱、第二铁芯柱及第三铁芯柱所组成，每个 铁芯柱高度相同，由 2个或 2个以上非晶合金带材卷绕成圆柱对接所组成， 每个铁芯柱中心有一圆形通孔；所述上铁轭与下铁轭相同，且分别是由等 宽度的非晶合金带材卷绕成的三角形状的框，上、下铁轭的中心孔为等边 三角形， 它们的外边缘为带圆角的等边三角形， 上、下铁轭的厚度等于铁 芯柱的直径，上、下铁轭的有效横截面积大于或等于铁芯柱有效横截面积 的 倍； 所述第一铁芯柱、 第二铁芯柱及第三铁芯柱分别与上、 下铁 轭垂直对接， 并位于上、下铁轭的 3个所述圆角上， 并分别与 3个所述圆 角内切。第一铁芯柱、第二铁芯柱及第三铁芯柱横截面的圆心构成一个等 边三角形。 The object of the present invention is to design an amorphous alloy triangular transformer core to reduce the no-load loss of the core, reduce the noise of the transformer, and save the copper material consumed by the coil. According to the technical solution provided by the present invention, the amorphous alloy triangular transformer core includes a core post and an upper iron yoke at an upper end of the iron core and a lower iron yoke at a lower end of the iron core, characterized in that: the iron The stem is composed of the same independent first, second and third iron core columns, each of which has the same height and is wound by two or more amorphous alloy strips. Formed by a cylindrical butt joint, each of the core legs has a circular through hole; the upper iron yoke is the same as the lower iron yoke, and is respectively a triangular-shaped frame wound by an equal-width amorphous alloy strip. The center holes of the upper and lower iron yokes are equilateral triangles, and their outer edges are equilateral triangles with rounded corners. The thickness of the upper and lower iron yokes is equal to the diameter of the iron core column, and the effective cross-sectional area of the upper and lower iron yokes. And greater than or equal to a multiple of the effective cross-sectional area of the iron core; the first iron core pillar, the second iron core pillar and the third iron core pillar are vertically butted with the upper and lower iron yokes respectively, and are located at the upper and lower iron yokes 3 of the rounded corners, and 3 of the circles respectively Inscribed in the corner. The center of the cross section of the first core leg, the second core leg and the third core leg constitutes an equilateral triangle.
本发明的优点是： 该变压器铁芯采用了三角形立体排列结构， 每相 铁轭长度相同并且最短， 铁芯柱与铁轭都是由非晶合金带材连续卷绕而 成， 无接缝和间隙， 铁芯横截面呈圆形。 因此它空载损耗小， 噪音低， 节 约铜材， 并且由于铁芯柱与上、下铁轭采用垂直对接的联接方式， 极大方 便了变压器高低压线圈的套装。  The invention has the advantages that: the transformer core adopts a triangular three-dimensional arrangement structure, the length of each phase iron yoke is the same and the shortest, and the iron core column and the iron yoke are continuously wound by the amorphous alloy strip, without seams and In the gap, the core has a circular cross section. Therefore, it has low no-load loss, low noise, and saves copper, and because the iron core column and the upper and lower iron yokes are vertically butted, the package of the high and low voltage coils of the transformer is greatly facilitated.
附图说明 DRAWINGS
图 1是本发明的结构图  Figure 1 is a structural view of the present invention
图 2是图 1中去掉了上铁轭后的结构图  Figure 2 is a structural view of Figure 1 with the upper iron yoke removed
图 3是图 2的俯视图 具体实施方式  Figure 3 is a plan view of Figure 2
如图所示： 所述非晶合金三角形变压器铁芯， 包括铁芯柱与位于铁 芯柱上端的上铁轭 4和位于铁芯柱下端的下铁轭 5，所述铁芯柱由相同的 各自独立的第一铁芯柱 1、 第二铁芯柱 2及第三铁芯柱 3所组成， 每个铁 芯柱高度相同，由 2个或 2个以上非晶合金带材卷绕成的圆柱对接所组成， 每个铁芯柱中心有一圆形通孔；所述上铁轭 4与下铁轭 5相同，且分别是 由各自连续的等宽度的非晶合金带材卷绕而成的三角形状的框，上铁轭 4 与下铁轭 5的中心孔均为等边三角形，上铁轭 4与下铁轭 5的外边缘为带 圆角的等边三角形； 所述第一铁芯柱 1、第二铁芯柱 2及第三铁芯柱 3分 别与上铁轭 4和下铁轭 5垂直对接，并位于上铁轭 4和下铁轭 5的 3个所 述圆角上， 并分别与 3个所述圆角内切； 第一铁芯柱 1、 第二铁芯柱 2及 第三铁芯柱 3的横截面的圆心构成一个等边三角形；上铁轭 4与下铁轭 5 的厚度等于铁芯柱横截面的直径，上铁轭 4与下铁轭 5的有效的横截面积 大于或等于铁芯柱有效横截面积的 1/ 倍。  As shown in the figure: the amorphous alloy triangular transformer core comprises a core column and an upper iron yoke 4 at an upper end of the iron core column and a lower iron yoke 5 at a lower end of the iron core column, the iron core column being identical Each of the first iron core column 1, the second iron core column 2 and the third iron core column 3 are composed of independent cores, each of which has the same height and is wound by two or more amorphous alloy strips. Cylindrical butt joints, each of which has a circular through hole in the center; the upper iron yoke 4 is identical to the lower iron yoke 5, and is respectively wound from respective continuous amorphous alloy strips of equal width a triangular-shaped frame, the center holes of the upper iron yoke 4 and the lower iron yoke 5 are equilateral triangles, and the outer edges of the upper iron yoke 4 and the lower iron yoke 5 are equilateral triangles with rounded corners; the first core The column 1, the second core post 2 and the third core stud 3 are vertically butted against the upper iron yoke 4 and the lower iron yoke 5, respectively, and are located on the three rounded corners of the upper iron yoke 4 and the lower iron yoke 5, And respectively inscribed with three of the rounded corners; the center of the cross section of the first iron core column 1, the second iron core column 2 and the third iron core column 3 constitutes a a side triangle; the thickness of the upper iron yoke 4 and the lower iron yoke 5 is equal to the diameter of the cross section of the iron core, and the effective cross sectional area of the upper iron yoke 4 and the lower iron yoke 5 is greater than or equal to 1 of the effective cross sectional area of the iron core column / times.
制造时， 整个非晶合金三角形变压器铁芯， 包括二部分， 即 3 个完 全相同的铁芯柱及上、 下铁轭 4， 5。 在卷绕机上装夹上圆柱形的芯棒， 然后将等宽度的非晶合金带料紧密整齐地卷绕在芯棒上，形成一个非晶合 金圆柱， 卷绕完毕后将它们送入专用退火炉在 350°C— 450°C温度下加磁 场退火， 退火后的非晶合金圆柱的两个端面要均匀地涂复专用胶水， 将 2 个或 2个以上非晶合金圆柱叠装在一起组成铁芯柱。 When manufactured, the entire amorphous alloy triangular transformer core consists of two parts, namely three identical core legs and upper and lower iron yokes 4, 5. A cylindrical mandrel is clamped on the winder, and then an equal-width amorphous alloy strip is tightly and neatly wound on the mandrel to form an amorphous bond. Gold cylinders, after winding, send them to a special annealing furnace and apply magnetic field annealing at 350 °C - 450 °C. The two end faces of the annealed amorphous alloy cylinders should be evenly coated with special glue. Or two or more amorphous alloy cylinders are stacked together to form a core column.
制造上铁轭 4和下铁轭 5，可用符合设计要求的等宽度的非晶合金带 料，卷绕在三角形状的芯块上，使上铁轭 4和下铁轭 5的厚度都等于铁芯 柱的直径； 为了使上、 下铁轭 4、 5中的磁通密度小于或等于铁芯柱中的 磁通密度， 我们使上、 下铁轭 4、 5的有效横截面积大于或等于铁芯柱有 效横截面的 倍。 卷好后的上、 下铁轭 4、 5也需经过真空加磁场退火 处理， 从而消除内应力， 降低铁损。上铁轭 4和下铁轭 5的内框是等边三 角形，处框是带有三个圆角的等边三角形状，三个圆角分别与每个铁芯柱 横截面内切。  The upper iron yoke 4 and the lower iron yoke 5 are manufactured, and the amorphous alloy strip having an equal width according to the design requirement can be wound on the triangular shaped core block so that the thickness of the upper iron yoke 4 and the lower iron yoke 5 are equal to iron. The diameter of the stem; in order to make the magnetic flux density in the upper and lower iron yokes 4, 5 less than or equal to the magnetic flux density in the iron core, we make the effective cross-sectional area of the upper and lower iron yokes 4, 5 greater than or equal to The multiple of the effective cross section of the iron core. The rolled upper and lower iron yokes 4 and 5 are also subjected to vacuum and magnetic field annealing treatment to eliminate internal stress and reduce iron loss. The inner frame of the upper iron yoke 4 and the lower iron yoke 5 is an equilateral triangle, and the frame is an equilateral triangle shape with three rounded corners, and the three rounded corners are respectively cut in cross section with each of the core legs.

Claims

1、 非晶合金三角形变压器铁芯， 包括铁芯柱与位于铁芯柱上端的上 铁轭（4)和位于铁芯柱下端的下铁轭（5 )， 其特征是： 所述铁芯柱由相同 的各自独立的第一铁芯柱 （1 )、 第二铁芯柱 （2) 及第三铁芯柱 （3 ) 所组 成， 每个铁芯柱高度相同， 由 2个及 2个以上非晶合金等宽带材卷绕成的 圆柱对接组成， 每个铁芯柱中心有一圆形通孔； 所述上铁轭（4)与下铁轭1. An amorphous alloy triangular transformer core comprising a core post and an upper iron yoke (4) at an upper end of the iron core column and a lower iron yoke (5) at a lower end of the iron core column, characterized in that: the iron core column It consists of the same independent first iron core column (1), second iron core column (2) and third iron core column (3). Each iron core column has the same height, consisting of two or more. a wide-angle material such as an amorphous alloy is wound into a cylindrical butt joint, each of which has a circular through hole in the center; the upper iron yoke (4) and the lower iron yoke
(5 )相同， 分别由各自等宽度的非晶合金带材卷绕成三角形状的框， 上铁 轭（4) 与下铁轭（5 ) 的中心孔均为等边三角形状， 上铁轭（4) 与下铁轭 (5 ) 的外边缘为带圆角的等边三角形； 所述第一铁芯柱（1 )、 第二铁芯柱 (2) 及第三铁芯柱 （3 ) 分别与上铁轭 （4) 和下铁轭 （5 ) 垂直对接， 并 位于上铁轭 （4) 及下铁轭 （5) 的所述圆角上， 并分别与 3个所述圆角内 切。 (5) Similarly, each of the amorphous alloy strips of equal width is wound into a triangular frame, and the center holes of the upper iron yoke (4) and the lower iron yoke (5) are equilateral triangle shapes, and the upper iron yoke (4) The outer edge of the lower iron yoke (5) is an equilateral triangle with rounded corners; the first iron core column (1), the second iron core column (2) and the third iron core column (3) Vertically abutting the upper iron yoke (4) and the lower iron yoke (5), respectively, on the rounded corners of the upper iron yoke (4) and the lower iron yoke (5), and respectively within the three rounded corners cut.
2、 根据权利要求 1所述的非晶合金三角形变压器铁芯， 其特征是： 第 一铁芯柱 （1 )、 第二铁芯柱 （2) 及第三铁芯柱 （3 ) 的横截面的圆心构成 一个等边三角形。  2. The amorphous alloy triangular transformer core according to claim 1, wherein: a cross section of the first core post (1), the second iron post (2) and the third core post (3) The center of the circle forms an equilateral triangle.
3、 根据权利要求 1所述的非晶合金三角形变压器铁芯， 其特征是： 上 铁轭 （4) 与下铁轭 （5 ) 的厚度等于铁芯柱横截面的直径。  The amorphous alloy triangular transformer core according to claim 1, wherein the thickness of the upper iron yoke (4) and the lower iron yoke (5) is equal to the diameter of the cross section of the iron core.
4， 根据权利要求 1所述的非晶合金三角形变压器铁芯， 其特征是： 上 铁轭 （4) 与下铁轭 （5 ) 的有效横截面积大于或者等于铁芯柱有效横截面 积的 0.577倍。  4. The amorphous alloy triangular transformer core according to claim 1, wherein: the effective cross-sectional area of the upper iron yoke (4) and the lower iron yoke (5) is greater than or equal to the effective cross-sectional area of the iron core column. 0.577 times.
PCT/CN2011/001961 2011-11-25 2011-11-25 Triangular transformer iron core of amorphous alloy WO2013075268A1 (en)

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Publication number Priority date Publication date Assignee Title
CN105845383A (en) * 2016-06-15 2016-08-10 上海琦荣机电设备有限公司 Triangular three-dimensional magnetic heat balance reactor
CN106601461B (en) * 2016-12-13 2018-12-11 上海置信电气非晶有限公司 A kind of machining manufacture of stereo amorphous alloy wound iron core

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WO2001082316A1 (en) * 2000-04-27 2001-11-01 A.T.T. Advanced Transformer Technologies (1998) Ltd. A wound transformer core and a method and apparatus for manufacturing thereof
CN2562322Y (en) * 2002-07-09 2003-07-23 董军 Threedimensional triangular iron core of power and electronic three-phase transformer
CN2622823Y (en) * 2003-05-27 2004-06-30 新疆特变电工股份有限公司 Loop three-phase cable winding transformer
CN201421770Y (en) * 2009-06-08 2010-03-10 吴茂安 Open triangle transformer iron core
CN201820600U (en) * 2010-08-24 2011-05-04 吴茂安 Amorphous alloy ring-shaped transformer iron core
CN102339667A (en) * 2010-07-28 2012-02-01 吴茂安 Amorphous alloy delta transformer core
CN202332513U (en) * 2011-11-23 2012-07-11 吴茂安 Stereo amorphous alloy wound iron core

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WO2001082316A1 (en) * 2000-04-27 2001-11-01 A.T.T. Advanced Transformer Technologies (1998) Ltd. A wound transformer core and a method and apparatus for manufacturing thereof
CN2562322Y (en) * 2002-07-09 2003-07-23 董军 Threedimensional triangular iron core of power and electronic three-phase transformer
CN2622823Y (en) * 2003-05-27 2004-06-30 新疆特变电工股份有限公司 Loop three-phase cable winding transformer
CN201421770Y (en) * 2009-06-08 2010-03-10 吴茂安 Open triangle transformer iron core
CN102339667A (en) * 2010-07-28 2012-02-01 吴茂安 Amorphous alloy delta transformer core
CN201820600U (en) * 2010-08-24 2011-05-04 吴茂安 Amorphous alloy ring-shaped transformer iron core
CN202332513U (en) * 2011-11-23 2012-07-11 吴茂安 Stereo amorphous alloy wound iron core

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105845383A (en) * 2016-06-15 2016-08-10 上海琦荣机电设备有限公司 Triangular three-dimensional magnetic heat balance reactor
CN106601461B (en) * 2016-12-13 2018-12-11 上海置信电气非晶有限公司 A kind of machining manufacture of stereo amorphous alloy wound iron core

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