WO2021255950A1 - Stacked-core stationary induction apparatus and method for manufacturing same - Google Patents

Stacked-core stationary induction apparatus and method for manufacturing same Download PDF

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Publication number
WO2021255950A1
WO2021255950A1 PCT/JP2020/038600 JP2020038600W WO2021255950A1 WO 2021255950 A1 WO2021255950 A1 WO 2021255950A1 JP 2020038600 W JP2020038600 W JP 2020038600W WO 2021255950 A1 WO2021255950 A1 WO 2021255950A1
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Prior art keywords
magnetic material
yoke
leg
induction device
material member
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PCT/JP2020/038600
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French (fr)
Japanese (ja)
Inventor
尊雄 今川
誠 舘村
孝平 佐藤
俊明 高橋
晶 中島
浩幸 三上
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株式会社日立産機システム
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Publication of WO2021255950A1 publication Critical patent/WO2021255950A1/en

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    • 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
    • H01F27/245—Magnetic cores made from sheets, e.g. grain-oriented
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F30/00—Fixed transformers not covered by group H01F19/00
    • H01F30/06—Fixed transformers not covered by group H01F19/00 characterised by the structure
    • H01F30/12—Two-phase, three-phase or polyphase transformers
    • 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
    • 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

Definitions

  • the present invention relates to a stationary iron core stationary induction device and a method for manufacturing the same.
  • a static induction device such as a transformer
  • a static induction device for a steel core in which a block body in which amorphous thin strips are laminated or an electromagnetic steel plate is stacked to form an iron core composed of a leg portion and a yoke portion.
  • a frame type and a strip type as the iron core structure of the stacked iron core guiding device.
  • the frame type as the magnetic material of the leg portion and the yoke portion, a material having an oblique end face shape such as a trapezoidal shape is used, and the diagonal end faces are connected to each other to form a stacked iron core.
  • the static induction device after assembly is more efficient than the strip type, but it is necessary to cut the magnetic material diagonally, which complicates cutting and assembling and increases the manufacturing process.
  • the strip type a rectangular parallelepiped strip-shaped magnetic material is used as the magnetic material of the leg portion and the yoke portion to form a stacked iron core. Compared to the frame type manufacturing process, the strip type is easier to cut the magnetic material and requires fewer manufacturing steps.
  • Patent Document 1 states that "a unit polymer is formed by cutting a strip polymer made of a stack of strips of a plurality of amorphous magnetic alloy foils to a predetermined length. Unit weights are sequentially formed. A laminated block of unit polymers is formed by stacking the coalesced products at different positions in the length direction. The unit polymers constituting the laminated block are taken in order from the top and stacked on a work table. It forms the legs and joints of the iron core. "(See summary).
  • Patent Document 1 discloses a method for manufacturing an amorphous steel core with improved work efficiency by making it possible to easily form a unit polymer composed of a polymer of a ribbon of an amorphous magnetic alloy foil.
  • the efficiency of the manufacturing method is considered, not the efficiency of the transformer or the static induction device after assembly.
  • An object of the present invention is to provide an easy-to-manufacture strip-shaped and efficient product core static induction device and a method for manufacturing the same.
  • the leg portion having a winding and the yoke portion having no winding are formed of a strip-shaped magnetic material member, and form a stacked iron core which is abutted against each other.
  • the leg portion and the yoke portion are formed by laminating a plurality of iron core block bodies in which a plurality of the magnetic material members are arranged in the short side direction, and the leg portion and the yoke portion are formed by laminating a plurality of iron core blocks.
  • the end portion of the magnetic member includes a layer of the iron core block body displaced in the long side direction, and one of the abutting portions of the leg portion and the yoke portion with respect to the end portion of the central leg portion.
  • a part of the yoke portion is located in the region formed by the displacement of the magnetic member in the leg portion at the central three intersections where the ends of the yoke portion are abutted from the side and the other side, and the yoke portion is located.
  • a part of the leg portion is located in the region where the magnetic member is displaced.
  • a method for manufacturing a steel core static induction device in which a leg portion having a winding and a yoke portion having no winding are formed of a strip-shaped magnetic material member and abutted against each other to form a stacked iron core.
  • the center of the step of forming the leg portion and the yoke portion by laminating a plurality of iron core block bodies in which the plurality of magnetic material members are arranged in the short side direction and the abutting portion between the leg portion and the yoke portion.
  • the yoke portion is located in a region generated by the displacement of the magnetic member in the legs.
  • a step is provided in which a part of the leg portion is positioned in a region of the yoke portion where the magnetic material member is displaced.
  • FIG. 1st layer of the product core used in the product core static induction device of the first embodiment It is a figure which shows the structure of 6 kinds of blocks. It is a front view of the 2nd and subsequent layers of the steel core of Example 1.
  • FIG. It is a figure which showed the calculation result of the magnetic flux density which was DC excited at the side 2 intersection part. It is a figure which showed the structure of the side 2 intersection part of the product core of Example 1.
  • FIG. It is a figure which shows the calculation result excited to the side 2 intersection part of Example 1.
  • FIG. It is a figure which shows the structure of the product core of Example 2.
  • FIG. It is a figure which shows the state when the length of the 2nd leg member is changed when the 1st leg member is 50. It is a figure which shows the state when the length of the 2nd leg member is changed when the 1st leg member is 51. It is a figure which shows the state when the length of the 2nd leg member is changed when the 1st leg member is 51s. It is a figure which shows the state when the length of the 2nd leg member is changed when the 1st leg member is 52. It is a figure which shows the state when the length of the 2nd leg member is changed when the 1st leg member is 52s.
  • FIGS. 13A and 13B are views showing a conventional stacked iron core type
  • FIG. 13A is an example of a frame type iron core
  • FIG. 13B is an example of a strip type iron core.
  • a magnetic material member having an end face shape such as a trapezoid or a hexagon is used for the leg portion 5
  • a magnetic material member having a trapezoidal shape with a notch is used for the yoke portion 6.
  • Each of the diagonal end faces is connected to form a frame-shaped steel core.
  • the position of the gap which is the abutment portion between the leg portion 5 and the yoke portion 6, is provided so as to be staggered between the upper layer and the lower layer in which the layers are laminated to improve the flow of magnetic flux between the upper and lower layers and increase the height. It may improve efficiency.
  • the primary and secondary coils 7 are wound around the leg portion 5.
  • the frame type has higher efficiency in iron core characteristics than the strip type, but it is necessary to cut the magnetic member diagonally, and the number of member shapes is large, so cutting the magnetic material and assembling the stacked iron core are complicated.
  • the leg portion 5 means an iron core member having a region around which the coil is wound
  • the yoke portion 6 means an iron core member having no region around which the coil is wound.
  • a rectangular parallelepiped strip-shaped magnetic member is used for the legs 5 and the yoke 6, and the ends of the strips are butted against the sides of the other strips. Arrange them to form a three-legged steel core.
  • the indicated iron core combination is set as one layer, and this layer is stacked upside down in units of one or two layers so that the gap positions are not concentrated, and the flow of magnetic flux between the upper and lower layers. We are trying to improve efficiency.
  • the strip type is easy to manufacture and assemble because it uses a strip-shaped magnetic member, but the end face of the member is perpendicular to the magnetic path, a large amount of magnetic poles are generated, and a large demagnetic field is generated. Therefore, the efficiency is lower than that of the frame type.
  • amorphous strips with good characteristics and small thickness are used instead of electrical steel sheets. It is suitable because the thickness is small and the eddy current is also small.
  • Transformers using amorphous strips in the current market are of the winding core type, while in order to be used for large transformers, it is necessary to use the stacked iron core type.
  • the width of the amorphous strip is determined by the standard, but there is no wide one suitable for a large transformer as compared with the magnetic steel sheet.
  • the amorphous strip is manufactured by pouring a heated and melted member into a low-temperature roller and spreading it, and it is generally difficult to manufacture a wide amorphous strip due to the manufacturing principle thereof.
  • the present invention provides a strip-shaped, easy-to-manufacture, and efficient three-phase stacked iron core transformer.
  • examples of the present invention will be described with reference to the drawings.
  • the same constituent elements are given the same name and reference numeral as much as possible, and the repeated description thereof will be omitted.
  • the first embodiment of the present invention will be described with reference to FIGS. 1 to 12.
  • the stacked iron core stationary inducer according to the first embodiment is formed by stacking a plurality of iron core block bodies in which two strip-shaped magnetic members are arranged in the short side direction in a leg portion and a yoke portion.
  • FIG. 1 is a diagram showing the first layer of a steel core used in the three-phase product core static induction device of this embodiment.
  • the leg portion 5 and the yoke portion 6 of this embodiment are formed of any of five types of iron core blocks a, b, c, d, and e, and these are abutted against each other to form a stacked iron core. It is composed.
  • the central 3 crossing portion is a portion where the end portion of the yoke portion 6 is abutted from one side (right side) and the other side (left side) with respect to the end portion of the central leg portion 5', and the side 2 crossing portion.
  • the portion is a portion where the end portion of the yoke portion 6 is abutted against the lateral (right side or left side) leg portion 5.
  • the iron core opening is a square having a length L.
  • FIG. 2 is a diagram showing the configuration of six types of blocks a to f, which are the basics.
  • Each block is formed by joining magnetic members 11 and 12 which are foils having a material width w at the center, and a to f have different length combinations.
  • the block a is adjacent to a rectangular first magnetic member 11 having a width w and a length L and a rectangular second magnetic member 12 having a width w and a length L + 2w so that both ends are w. It is joined at the joint portion 13 at the center of the facing surface.
  • b to e are blocks in which two magnetic material members having a width w are combined and joined so as to have a shift width w.
  • f is a block in which two L + w rectangular magnetic members are joined.
  • the joining method is not limited, but if it is a joining method such as spot welding in which the joining portion does not have a thickness, the space factor of the iron core can be improved because the joining portion does not have a thickness. Further, since the joint portion is not thick, the position shift is less likely to occur in the process of stacking the iron core blocks, and the productivity is improved. Using these, the following laminated body was constructed.
  • FIG. 3 is a diagram showing the second and subsequent layers of the steel core of this embodiment. As shown in FIG. 3, the second layer and the third layer have different arrangements from the first layer shown in FIG.
  • the fourth layer is the same as the second layer
  • the fifth layer is the same as the first layer
  • the sixth layer is the same arrangement as the third layer
  • these six layers, in which three types of layers are repeatedly laminated, are the constituent units. Become.
  • the leg portion and the yoke portion are the first magnetic material member and the second magnetic material member longer than the first magnetic material member. It has a magnetic material member. Then, on the end surface of one of the first magnetic material member and the second magnetic material member of the leg portion or the yoke portion, the side surface of the other first magnetic material member and the second magnetic material member of the leg portion or the yoke portion has a stepped shape. Have been dating.
  • the legs and the yoke are formed of a block body in which the ends of the magnetic member are displaced in the long side direction. Contains layers. Then, a part of the yoke portion is located in the region where the magnetic material member is displaced in the leg portion, and a part of the leg portion is located in the region where the magnetic material member is displaced in the yoke portion.
  • the materials of the magnetic members 11 and 12 may be amorphous alloy foil pieces or electromagnetic steel sheets.
  • the terms amorphous strip, amorphous alloy foil piece, amorphous alloy strip, etc. are referred to, but all of them refer to the amorphous strip.
  • the magnetic material member may be a clad material in which an amorphous foil piece and an electromagnetic steel sheet or a nanocrystal foil are laminated, or may be a thin band of a nanocrystal foil alone.
  • the amorphous foil piece is thinner than the thickness of the electrical steel sheet, and is about one tenth the thickness of the electrical steel sheet.
  • the iron core block body can be handled in the same manner as an electromagnetic steel sheet.
  • the characteristics of the iron core can be improved by forming the iron core block body obtained by joining the two magnetic material members 11 and 12 of the amorphous thin band and laminating them alternately. Further, when about 10 to 20 pieces of the joined pieces are stacked to form an iron core block body, the iron core block body can be combined for each iron core block body at the time of manufacturing, so that the productivity is improved. The reason for such a configuration will be described below.
  • FIG. 4 is a diagram showing the calculation results of the DC-excited magnetic flux density at the two side intersections.
  • the iron core is made by bundling 10 pieces of amorphous foil having a width of 170 mm as one layer and stacking them in two upper and lower layers.
  • (A) is a frame and (b) is a strip structure.
  • the exciting coil was set to 20 turns and the current was set to 4 A.
  • the magnetic flux was recirculated between the foils on the opposite side of the intersection with an iron plate having a thickness of 20 mm.
  • the average magnetic flux density values were compared with the cross section 55 mm from the exciting coil as the calculated position.
  • FIG. 5 is a diagram showing the structure of the lateral 2 intersections of the product core 1 of this embodiment.
  • a leg made of a second iron core block body 35 is attached to the end faces of the first magnetic body member 31 and the second magnetic body member 32 in the yoke portion made of the first iron core block body 30.
  • the side surfaces of the first magnetic material member 36 and the second magnetic material member 37 in the portion are attached to each other in a staircase shape.
  • a yoke composed of the first iron core block body 30 is attached to the end faces of the first magnetic material member 36 and the second magnetic material member 37 in the leg portion composed of the second iron core block body 35.
  • the side surfaces of the first magnetic material member 31 and the second magnetic material member 32 in the portion are attached to each other in a staircase shape.
  • the blocks having a single width of 85 mm, which is 1/2 of the width of 170 mm of the foil of FIG. 4, are shifted by a length of 85 mm and joined, and the blocks are arranged alternately.
  • FIG. 5 (b) was used as the lower layer, and the excitation calculation was performed in the same manner as in FIG.
  • FIG. 6 is a diagram showing a calculation result excited at two lateral intersections of this embodiment.
  • the region having a low magnetic flux density exists in the portion indicated by the arrow in the upper layer and the lower layer, but the region is smaller than the strip type of FIG. 4 (b).
  • the two layers of FIGS. 5 (a) and 5 (b) should be stacked on the basis of the two lateral intersections.
  • FIG. 7 is a diagram showing a design method at the central 3 intersection.
  • FIG. 7A has a structure in which an amorphous foil having a width of 170 mm is crossed in a T shape and the opposite side of the intersection is refluxed with an iron block having a thickness of 100 mm and a width of 65 mm.
  • the coil is placed 300 mm to the left and right from the center of the intersection of the foil and 150 mm below it, and 200 mm to the right (p1 in FIG. 7, hereinafter “calculated position 1") and 100 mm below (Fig. 7).
  • the average magnetic flux density was measured at p2 of 7 (hereinafter referred to as "calculation position 2").
  • the coil had 20 turns and the current conditions were determined as follows.
  • FIG. 7B shows u, v, w waveforms of three-phase alternating current.
  • the waveform is 120 ° out of phase.
  • the vertical axis intensity is a relative value.
  • the current of one phase becomes 0 at the positions of case 1 and case 2.
  • the case 1 in which direct current is applied to the two coils of the structure (a) and the magnetic flux flows laterally only in the yoke portion and the case 2 in which the magnetic flux flows from the bottom to the right and flows from the leg portion to the yoke portion.
  • the excitation efficiencies were compared by calculating each.
  • the measurement position was set to the intersection side 50 mm from the exciting coil regardless of the case.
  • FIG. 7 is an example of a frame structure.
  • FIG. 8 is a diagram showing the calculation results of Case 1 and Case 2 in the frame structure of FIG. 7.
  • Case 1 as shown in FIG. 8A, the magnetic flux flows through the entire yoke, and the average magnetic flux densities at the calculated positions 1 and 2 are 1.45T and 0.04T, respectively.
  • Case 2 also in Case 2, as shown in FIG. 8B, the flow efficiently flows from the leg to one side of the yoke, and the average magnetic flux densities at the calculated positions 1 and 2 are 1.48T and 1.51T, respectively.
  • FIG. 9 is a diagram showing an example of the central three intersections of the strip-shaped structure.
  • the first layer has a single block on the yoke side and a bundle branch block perpendicular to the block, and the second layer has two blocks on the yoke side. It is divided, the bundle branch block is projected by that amount, and these two layers are combined to form a structure.
  • the average magnetic flux densities of the calculated positions 1 and 2 under the same excitation conditions as in FIG. 8 are (1.24T, 0.03T) in case 1 and (1.23T, 1.34T) in case 2, and are 15 in all cases.
  • the magnetic flux density is small by about%.
  • FIG. 10 is a diagram showing the calculation results excited for the legs at the central 3 intersections when the first layer and the second layer are left-right asymmetric.
  • the legs and yoke are a combination of blocks formed by joining two magnetic members with a width of 85 mm, and the shift positions of the ends of the legs are changed by 85 mm in the upper and lower two layers. ..
  • FIG. 10A shows a structure in which the end faces of the magnetic member on the side far from the leg portion of the end faces of the yoke portion are butted against each other at the shift position of the end portion of the leg portion.
  • FIG. 10B shows a structure in which the end faces of the magnetic member on the side far from the legs of the end faces of the yoke portions are butted against each other at the center of the central three intersections.
  • FIG. 10 (c) shows an intermediate structure between FIGS. 10 (a) and 10 (b).
  • the structure of (b) had a high average magnetic flux density in both cases 1 and 2. From this, it can be seen that the center of the yoke contact is good when the legs are asymmetrical.
  • FIG. 11 is a diagram showing the calculation results excited for the legs at the central 3 intersections when the first layer and the second layer are symmetrical.
  • FIG. 11A shows a structure in which the yoke portions are butted against each other at a position where the end surface of the magnetic member on the side far from the leg portion of the end surface of the yoke portion is 85 mm away from the center of the central 3 intersecting portion. Is shown.
  • FIG. 11B shows a structure in which the end faces of the magnetic member on the side far from the legs of the end faces of the yoke portions are butted against each other at the center of the central three intersections.
  • the structure of (b) had a high average magnetic flux density in both cases 1 and 2. From this, it can be seen that the center of the yoke contact is good even when the legs are symmetrical.
  • FIG. 12 is a diagram showing calculation results excited from the results of FIGS. 10 and 11 when the central 3 intersecting portion has a first, second, and third three-layer structure.
  • the yoke contacts are placed in the center in each case, the legs of the first and second layers are asymmetrical, and the legs of the third layer are symmetrical.
  • the magnetic flux density of both cases 1 and 2 was reduced by 5% from that of the frame type, and the efficiency was good.
  • the optimum structure of the three-phase iron core when the legs and the yoke are composed of the iron core block body in which two strip-shaped magnetic members are arranged in the short side direction is two layers at the two lateral intersections. A combination of three layers is good at the central three intersections. Therefore, if six types of blocks, which are the least common multiples of 2 and 3, as shown in FIG. 2, are used, the iron core can be constructed with as few types as possible. Further, it can be seen that the desired steel core can be realized by repeating the 6 layers shown in FIGS. 1 and 3.
  • an efficient steel core transformer with a strip type that is easy to manufacture. Further, by forming a 6-layer structure in which the positions of the butt portions of the iron core block body are changed between the upper and lower layers, the flow of magnetic flux can be improved and the efficiency can be improved. Further, in this embodiment, since the iron core block body in which two magnetic material members are joined is combined to form a stacked iron core, the production becomes easy.
  • an amorphous foil with a width of 170 mm was separately cut into strips and joined in units of 10 sheets to prepare a strip iron core foil.
  • An iron core B (comparative example) was manufactured so that the strip iron core had a stack thickness of 60 mm with an opening of 170 mm.
  • a 0.7 mm diameter enamel wire is wound around the three legs of the iron cores A and B for 200 turns each, and a separate detection wire is wound around the yoke for 20 turns.
  • the peak magnetic flux density of the yoke part was compared from the winding output. As a result, it was found that the iron core A has a 20% higher peak magnetic flux density than the iron core B, and the strip-shaped iron core of this embodiment has high efficiency.
  • the stacked iron core stationary inducer according to the second embodiment is formed by stacking a plurality of iron core block bodies in which four strip-shaped magnetic members are arranged in the short side direction in a leg portion and a yoke portion.
  • FIG. 15 is a diagram showing the configuration of two lateral intersections in the case of a four-divided iron core.
  • four amorphous pieces are cut back by the width of one of them, and the gap is on the leg 5 side at the four-divided end A and the gap is on the four-divided end B. Combine so that it comes out on the yoke part 6 side.
  • the four-divided end portion A and the four-divided end portion B are combined for each layer or multiple layers to form an iron core.
  • the receding width a should be aligned with the width a of one sheet before joining, whereby the demagnetic field at the end portion is reduced and the efficiency is improved.
  • FIG. 16 is a diagram showing the configuration of a three-phase stacked iron core of this embodiment.
  • the members constituting the iron core it is preferable to arrange them point-symmetrically with respect to the center point of the iron core indicated by the point P. Therefore, in the following, the configuration of the central three intersections will be described by taking the iron core configuration of the right half as an example.
  • FIG. 17 shows a magnetic material on the anti-iron core opening side when the length b of the magnetic material member (hereinafter, the first leg member) on the iron core opening side of the central leg portion 5'is L + a (reference numeral 50). It is a figure which shows the state when the length of a member (hereinafter referred to as a 2nd leg member) is changed.
  • L is the opening width
  • a is the original material width (170 mm in this embodiment).
  • the length of the second leg member needs to be longer than the length of the first leg member. Further, in the case of L + a (length 50), the length of the second leg member needs to be L + 2a (length 51) or more because four end faces of the yoke portions 6 are lined up and the gap length is 4a. There is. Further, when the second leg member has a length of 51, three end faces of the yoke portions 6 are lined up, so that the gap length is 3a. However, when the gap length becomes 3a, the end portion of the material becomes longer with respect to the magnetic path, so that the loss increases. Therefore, in the following, it is decided to determine the suitability of the length and position of the second leg member under the condition of avoiding the gap length of 3a or more.
  • the length of the second leg member is L + 4a (length 53)
  • the upper end surface of the second leg member is arranged so as to travel by a length of 2a from the upper end surface of the first leg member, it can be configured to satisfy the condition.
  • this arrangement is vertically asymmetrical, it is possible to realize two patterns in which the top and bottom are interchanged. Therefore, two types of configurations of 1 ⁇ 2 are possible. The other two methods are unsuitable because the gap length becomes 3a or more above or below the second leg member.
  • the length of the second leg member is L + 5a (length 54)
  • the upper end surface of the second leg member is arranged so as to travel by a length of 2a from the upper end surface of the first leg member, it can be configured to satisfy the condition.
  • this arrangement is vertically asymmetrical, it is possible to realize two patterns in which the top and bottom are interchanged. Therefore, two types of configurations of 1 ⁇ 2 are possible. If the upper end surface of the second leg member has a length of 3a from the upper end surface of the first leg member, the gap length becomes 3a on the side of the second leg member, which is unsuitable.
  • the gap length becomes 3a on the side of the second leg member, which is unsuitable. If the second leg member is longer, the leg portion cuts the yoke portion, which reduces efficiency.
  • the total number of possible configurations is 4.
  • FIG. 18 is a diagram showing a state when the length of the first leg member is L + 2a (reference numeral 51) and the length of the second leg member is changed.
  • L + 3a length 52
  • L + 4a length 53
  • the condition is also satisfied when the length of the second leg member is L + 5a (length 54), but since this arrangement is vertically asymmetric, two patterns can be configured.
  • the condition is also satisfied when the length of the second leg member is L + 6a (length 55), but since this arrangement is vertically symmetrical, one pattern can be configured.
  • the length of the first leg member is L + 2a (length 51)
  • the total number of possible configurations is 4.
  • FIG. 19 is a diagram showing a state when the length of the first leg member is L + 2a (reference numeral 51s) and the length of the second leg member is changed.
  • the length of the first leg member is L + 2a as in the case of FIG. 18, but unlike the case of FIG. 18, the arrangement of the first leg member is shifted downward by the length a.
  • the description of FIG. 19 is omitted, the possible configuration in this case is 4.
  • FIG. 20 is a diagram showing a state when the length of the first leg member is L + 3a (reference numeral 52) and the length of the second leg member is changed. Although the description with respect to FIG. 20 will be omitted, the possible configuration in this case is 8.
  • FIG. 21 is a diagram showing a state when the length of the first leg member is L + 3a (reference numeral 52s) and the length of the second leg member is changed.
  • the length of the first leg member is L + 3a as in the case of FIG. 20, but unlike the case of FIG. 20, the arrangement of the first leg member is shifted downward by the length a.
  • the description with respect to FIG. 21 is omitted, the possible configuration in this case is 0.
  • FIG. 22 is a diagram showing a state when the length of the first leg member is L + 4a (reference numerals 53, 53s) and the length of the second leg member is changed.
  • the possible configuration is 4 when the first leg member is arranged as indicated by reference numeral 53, and the arrangement in which the first leg member is indicated by reference numeral 53s (arrangement shifted downward by the length a from the reference numeral 53).
  • the possible configuration at is 0.
  • FIG. 23 is a diagram showing the state of the second leg member when the length of the first leg member is L + 5a (reference numeral 54) and when the length of the first leg member is L + 6a (reference numeral 55). As shown in FIG. 23, the possible configuration is 0 regardless of whether the first leg member is arranged according to reference numeral 54 or reference numeral 555.
  • FIG. 24 is a table summarizing the determination results of suitability of the configuration for each combination of the length and arrangement of the first leg member and the second leg member described with reference to FIGS. 17 to 23. As shown in this table, the total number of possible configurations at the central 3 intersections is 24. Here, there are two types of patterns at the two lateral intersections. Therefore, the total combination of the central 3 intersections and the side 2 intersections is 24, which is the least common multiple of 24 and 2, and it is desirable to configure the iron core in units of 24 layers.
  • the noise is reduced by 3 dB compared with the rated power of the electromagnetic steel sheet iron core having a width of 550 mm and the same thickness of 200 mm, and the amorphous core of the present embodiment is used. The effect of the iron core was confirmed.

Abstract

The purpose of the present invention is to provide a stacked-core stationary induction apparatus of a strip type which is easy to manufacture and has high efficiency. For this purpose, the present invention provides a stacked-core stationary induction apparatus comprising a stacked core in which leg portions having windings and yoke portions having no windings are formed of strip-shaped magnetic material members and are abutted against each other. The leg portions and the yoke portions are each formed by stacking a plurality of core block bodies each comprising a plurality of the magnetic material members arranged in a short-side direction. The leg portions and the yoke portions each include a layer of the core block body in which the ends of the magnetic material members are displaced in a long-side direction. The leg portions and the yoke portions are abutted against each other in abutted parts, including a central tri-intersecting part in which ends of the yoke portions are abutted against an end of the central leg portion from one side and another side. In the tri-intersecting part, a part of the yoke portions is positioned in a region of the leg portion arising from the displacement of the magnetic material members thereof, and a part of the leg portion is positioned in a region of the yoke portions arising from the displacement of the magnetic material members thereof.

Description

積鉄心静止誘導機器およびその製造方法Sekisetsu core stationary induction device and its manufacturing method
　本発明は、積鉄心静止誘導機器およびその製造方法に関する。 The present invention relates to a stationary iron core stationary induction device and a method for manufacturing the same.
　変圧器などの静止誘導機器として、アモルファス薄帯を積層したブロック体や電磁鋼板を積み重ねて脚部およびヨーク部から成る鉄心を構成した積鉄心静止誘導機器がある。また、積鉄心誘導機器の鉄心構造として、額縁型と短冊型がある。額縁型は、脚部とヨーク部の磁性体として、台形形状などの斜めの端面形状を有するものを用いて、それぞれ斜めの端面同士をつないで積鉄心を構成するものである。額縁型は、組み立て後の静止誘導機器が短冊型に比べて高効率であるが、磁性体を斜めに切断する必要があり、切断や組み立てが複雑で製造工程が増加する。これに対して、短冊型は、脚部とヨーク部の磁性体として、直方体形状である短冊状のものを用いて、積鉄心を構成するものである。短冊型は、額縁型の製造工程に比べて、磁性体の切断が容易で製造工程が少なくなる。 As a static induction device such as a transformer, there is a static induction device for a steel core in which a block body in which amorphous thin strips are laminated or an electromagnetic steel plate is stacked to form an iron core composed of a leg portion and a yoke portion. In addition, there are a frame type and a strip type as the iron core structure of the stacked iron core guiding device. In the frame type, as the magnetic material of the leg portion and the yoke portion, a material having an oblique end face shape such as a trapezoidal shape is used, and the diagonal end faces are connected to each other to form a stacked iron core. In the frame type, the static induction device after assembly is more efficient than the strip type, but it is necessary to cut the magnetic material diagonally, which complicates cutting and assembling and increases the manufacturing process. On the other hand, in the strip type, a rectangular parallelepiped strip-shaped magnetic material is used as the magnetic material of the leg portion and the yoke portion to form a stacked iron core. Compared to the frame type manufacturing process, the strip type is easier to cut the magnetic material and requires fewer manufacturing steps.
　例えば、特許文献１には、「複数のアモルファス磁性合金箔のストリップを重ね合わせたものからなるストリップ重合体を所定の長さに切断することにより単位重合体を形成する。順次形成される単位重合体を長さ方向に位置をずらして段積みすることにより単位重合体の積層ブロックを形成する。積層ブロックを構成している単位重合体を上から順に取って作業台上に積層することにより積鉄心の脚部及び継鉄部を形成する。」（要約参照）と記載されている。 For example, Patent Document 1 states that "a unit polymer is formed by cutting a strip polymer made of a stack of strips of a plurality of amorphous magnetic alloy foils to a predetermined length. Unit weights are sequentially formed. A laminated block of unit polymers is formed by stacking the coalesced products at different positions in the length direction. The unit polymers constituting the laminated block are taken in order from the top and stacked on a work table. It forms the legs and joints of the iron core. "(See summary).
特開平１１－１８６０８２号公報Japanese Unexamined Patent Publication No. 11-186082
　特許文献１には、アモルファス磁性合金箔のリボンの重合体からなる単位重合体を容易に形成できるようにして作業能率を向上させたアモルファス積鉄心の製造方法が開示されている。しかし、製造方法の効率化についてのみ考慮されており、組み立て後の変圧器または静止誘導機器の効率を向上させることについては考慮されていない。 Patent Document 1 discloses a method for manufacturing an amorphous steel core with improved work efficiency by making it possible to easily form a unit polymer composed of a polymer of a ribbon of an amorphous magnetic alloy foil. However, only the efficiency of the manufacturing method is considered, not the efficiency of the transformer or the static induction device after assembly.
　本発明の目的は、製造容易な短冊型で効率の良い積鉄心静止誘導機器およびその製造方法を提供することにある。 An object of the present invention is to provide an easy-to-manufacture strip-shaped and efficient product core static induction device and a method for manufacturing the same.
　上記課題を解決するために、本発明は、巻線を有する脚部および巻線を有さないヨーク部が、短冊状の磁性体部材で形成され、互いに突き合わされた積鉄心を構成する積鉄心静止誘導機器であって、前記脚部およびヨーク部は、複数の前記磁性体部材が短辺方向に並べられた鉄心ブロック体を複数積層して形成され、前記脚部および前記ヨーク部は、前記磁性体部材の端部が長辺方向にずれた前記鉄心ブロック体の層を含んでおり、前記脚部と前記ヨーク部との突き合わせ部分のうち、中央の前記脚部の端部に対して一方側および他方側から前記ヨーク部の端部が突き合わされる中央３交差部分において、前記脚部における前記磁性体部材がずれて生じる領域に、前記ヨーク部の一部が位置し、前記ヨーク部における前記磁性体部材がずれて生じる領域に、前記脚部の一部が位置する。 In order to solve the above problems, in the present invention, the leg portion having a winding and the yoke portion having no winding are formed of a strip-shaped magnetic material member, and form a stacked iron core which is abutted against each other. In the stationary induction device, the leg portion and the yoke portion are formed by laminating a plurality of iron core block bodies in which a plurality of the magnetic material members are arranged in the short side direction, and the leg portion and the yoke portion are formed by laminating a plurality of iron core blocks. The end portion of the magnetic member includes a layer of the iron core block body displaced in the long side direction, and one of the abutting portions of the leg portion and the yoke portion with respect to the end portion of the central leg portion. A part of the yoke portion is located in the region formed by the displacement of the magnetic member in the leg portion at the central three intersections where the ends of the yoke portion are abutted from the side and the other side, and the yoke portion is located. A part of the leg portion is located in the region where the magnetic member is displaced.
　また、巻線を有する脚部および巻線を有さないヨーク部を、短冊状の磁性体部材で形成し、互いに突き合わせて積鉄心を構成する積鉄心静止誘導機器の製造方法であって、前記脚部およびヨーク部を、複数の前記磁性体部材を短辺方向に並べられた鉄心ブロック体を複数積層して形成するステップと、前記脚部と前記ヨーク部との突き合わせ部分のうち、中央の前記脚部の端部に対して一方側および他方側から前記ヨーク部の端部が突き合わされる中央３交差部分において、前記脚部における前記磁性体部材がずれて生じる領域に、前記ヨーク部の一部を位置させ、前記ヨーク部における前記磁性体部材がずれて生じる領域に、前記脚部の一部が位置させるステップと、を備える。 Further, a method for manufacturing a steel core static induction device in which a leg portion having a winding and a yoke portion having no winding are formed of a strip-shaped magnetic material member and abutted against each other to form a stacked iron core. The center of the step of forming the leg portion and the yoke portion by laminating a plurality of iron core block bodies in which the plurality of magnetic material members are arranged in the short side direction and the abutting portion between the leg portion and the yoke portion. At the central 3 intersections where the ends of the yoke are abutted from one side and the other side with respect to the ends of the legs, the yoke portion is located in a region generated by the displacement of the magnetic member in the legs. A step is provided in which a part of the leg portion is positioned in a region of the yoke portion where the magnetic material member is displaced.
　本発明によれば、製造容易な短冊型で効率の良い積鉄心静止誘導機器およびその製造方法を提供できる。 According to the present invention, it is possible to provide an easy-to-manufacture strip-shaped and efficient product core static induction device and a method for manufacturing the same.
　上記した以外の課題、構成および効果は、以下の実施例の説明により明らかにされる。 Issues, configurations and effects other than those mentioned above will be clarified by the explanation of the following examples.
実施例１の積鉄心静止誘導機器に用いられる積鉄心の１層目の正面図である。It is a front view of the 1st layer of the product core used in the product core static induction device of the first embodiment. ６種類のブロックの構成を示す図である。It is a figure which shows the structure of 6 kinds of blocks. 実施例１の積鉄心の２層目以降の正面図である。It is a front view of the 2nd and subsequent layers of the steel core of Example 1. FIG. 側方２交差点部分における、直流励磁した磁束密度の計算結果を示した図である。It is a figure which showed the calculation result of the magnetic flux density which was DC excited at the side 2 intersection part. 実施例１の積鉄心の側方２交差部分の構造を示した図である。It is a figure which showed the structure of the side 2 intersection part of the product core of Example 1. FIG. 実施例１の側方２交差部分に励磁した計算結果を示す図である。It is a figure which shows the calculation result excited to the side 2 intersection part of Example 1. FIG. 中央３交差部分における設計方法を示す図である。It is a figure which shows the design method in the central 3 intersection part. 図７の額縁構造で、ケース１とケース２の計算結果を示す図である。It is a figure which shows the calculation result of case 1 and case 2 in the frame structure of FIG. 短冊形構造の中央３交差部分の例を示す図である。It is a figure which shows the example of the central 3 intersection part of a strip-shaped structure. 中央３交差部分の脚部について、第１層と第２層を左右非対称とした場合に励磁した計算結果を示す図である。It is a figure which shows the calculation result which excited about the leg part of the central 3 intersection part when the 1st layer and the 2nd layer were asymmetrical. 中央３交差部分の脚部について、第１層と第２層を左右対称とした場合に励磁した計算結果を示す図である。It is a figure which shows the calculation result excited about the leg part of the central 3 intersection part when the 1st layer and the 2nd layer are symmetrical. 中央３交差部分を第１，第２，第３の三層構造とした場合に励磁した計算結果を示す図である。It is a figure which shows the calculation result excited when the central 3 intersection part was made into the 1st, 2nd, 3rd, 3rd layer structure. 従来の積鉄心形式を示す図である。It is a figure which shows the conventional product core type. 幅広のアモルファス薄帯の製造を説明する図である。It is a figure explaining the production of a wide amorphous ribbon. 実施例２の積鉄心の側方２交差部分の構成を示す図である。It is a figure which shows the structure of the side 2 intersection part of the product core of Example 2. FIG. 実施例２の積鉄心の構成を示す図である。It is a figure which shows the structure of the product core of Example 2. FIG. 第１脚部材が５０の場合に、第２脚部材の長さを変えたときの状態を示す図である。It is a figure which shows the state when the length of the 2nd leg member is changed when the 1st leg member is 50. 第１脚部材が５１の場合に、第２脚部材の長さを変えたときの状態を示す図である。It is a figure which shows the state when the length of the 2nd leg member is changed when the 1st leg member is 51. 第１脚部材が５１ｓの場合に、第２脚部材の長さを変えたときの状態を示す図である。It is a figure which shows the state when the length of the 2nd leg member is changed when the 1st leg member is 51s. 第１脚部材が５２の場合に、第２脚部材の長さを変えたときの状態を示す図である。It is a figure which shows the state when the length of the 2nd leg member is changed when the 1st leg member is 52. 第１脚部材が５２ｓの場合に、第２脚部材の長さを変えたときの状態を示す図である。It is a figure which shows the state when the length of the 2nd leg member is changed when the 1st leg member is 52s. 第１脚部材が５３および５３ｓの場合に、第２脚部材の状態を示す図である。It is a figure which shows the state of the 2nd leg member when the 1st leg member is 53 and 53s. 第１脚部材が５４および５５の場合に、第２脚部材の状態を示す図である。It is a figure which shows the state of the 2nd leg member when the 1st leg member is 54 and 55. 第１脚部材および第２脚部材の長さと配置の各組合せについて、構成の適否の判定結果を整理した表である。It is a table which arranged the judgment result of the suitability of the structure with respect to each combination of the length and the arrangement of the 1st leg member and the 2nd leg member.
　本発明の実施例の説明の前に、従来の３相の積鉄心変圧器を説明する。図１３は、従来の積鉄心形式を示す図であり、図１３（ａ）は額縁型鉄心の一例、図１３（ｂ）は短冊型鉄心の一例である。 Before explaining the embodiments of the present invention, a conventional three-phase product core transformer will be described. 13A and 13B are views showing a conventional stacked iron core type, FIG. 13A is an example of a frame type iron core, and FIG. 13B is an example of a strip type iron core.
　図１３（ａ）に示す額縁型積鉄心４０は、台形，六角形などの端面形状を有する磁性体部材を脚部５に、切り欠き付き台形形状を有する磁性体部材をヨーク部６に用いて、それぞれ斜めの端面同士をつないで、額縁形状の積鉄心を構成する。図には明示されていないが、脚部５とヨーク部６の突合せ部であるギャップの位置を、積層した上層と下層とでずらして設けることにより、上下層間で磁束の流れを良好にして高効率化を図る場合がある。なお、脚部５には明示しないが１次及び２次コイル７が巻回されている。額縁型は短冊型に比べて、鉄心特性が高効率であるが、磁性体部材を斜めに切断する必要があり、また部材形状が多数となるため磁性体の切断や積鉄心の組み立てが複雑である。なお、脚部５は、コイルを巻回す領域を有する鉄心部材を意味し、ヨーク部６は、コイルを巻き回す領域を有さない鉄心部材を意味する。 In the frame-type product core 40 shown in FIG. 13 (a), a magnetic material member having an end face shape such as a trapezoid or a hexagon is used for the leg portion 5, and a magnetic material member having a trapezoidal shape with a notch is used for the yoke portion 6. , Each of the diagonal end faces is connected to form a frame-shaped steel core. Although not explicitly shown in the figure, the position of the gap, which is the abutment portion between the leg portion 5 and the yoke portion 6, is provided so as to be staggered between the upper layer and the lower layer in which the layers are laminated to improve the flow of magnetic flux between the upper and lower layers and increase the height. It may improve efficiency. Although not specified on the leg portion 5, the primary and secondary coils 7 are wound around the leg portion 5. The frame type has higher efficiency in iron core characteristics than the strip type, but it is necessary to cut the magnetic member diagonally, and the number of member shapes is large, so cutting the magnetic material and assembling the stacked iron core are complicated. be. The leg portion 5 means an iron core member having a region around which the coil is wound, and the yoke portion 6 means an iron core member having no region around which the coil is wound.
　図１３（ｂ）に示す短冊型積鉄心５０は、直方体形状である短冊状の磁性体部材を脚部５およびヨーク部６に用いて、それぞれ短冊の端部を他の短冊の側部に突き合わせて配置し、３脚の積鉄心を構成する。図には明示されていないが、表示した鉄心組み合わせを１層とし、この層を１層または２層を単位として上下逆転に積層して、ギャップ位置を集中させないようにし、上下層間で磁束の流れを良好にして高効率化を図っている。短冊型は、短冊状の磁性体部材を用いるため製造・組立が容易であるが、部材端面が磁路に垂直であり、磁極発生が多く反磁界が大きい。このため額縁型に比べて効率が低い。 In the strip-shaped stacking core 50 shown in FIG. 13B, a rectangular parallelepiped strip-shaped magnetic member is used for the legs 5 and the yoke 6, and the ends of the strips are butted against the sides of the other strips. Arrange them to form a three-legged steel core. Although not explicitly shown in the figure, the indicated iron core combination is set as one layer, and this layer is stacked upside down in units of one or two layers so that the gap positions are not concentrated, and the flow of magnetic flux between the upper and lower layers. We are trying to improve efficiency. The strip type is easy to manufacture and assemble because it uses a strip-shaped magnetic member, but the end face of the member is perpendicular to the magnetic path, a large amount of magnetic poles are generated, and a large demagnetic field is generated. Therefore, the efficiency is lower than that of the frame type.
　変圧器等の鉄心材料としては、電磁鋼板に代えて、特性の良く厚みが小さいアモルファス薄帯を用いることが行われている。厚みが小さいため渦電流も小さくなるため好適である。現状の市場におけるアモルファス薄帯を用いた変圧器は巻鉄心型であり、一方、大型の変圧器に用いるためには、積鉄心型とすることが必要である。図１４（ａ）に示すように、アモルファス薄帯の幅は規格で決められているが、電磁鋼板に比べて、大型の変圧器に適した広幅のものはない。また、アモルファス薄帯は、熱して溶融した部材を低温のローラに注ぎ広げて製造するものであり、その製造原理の都合、幅が広いアモルファス薄帯を製造することは一般に困難である。このため、幅広にするためには、図１４（ｂ）に示すように、２枚のアモルファス薄帯を一部で重ねて接合部で接合する必要がある。また図１４（ｃ）に示すように、幅広としたアモルファス薄帯を額縁型鉄心に用いるためには、アモルファス薄帯を斜めに切断する必要がある。しかし、斜め切断には、対応する幅広の切断刃が必要であり、アモルファス薄帯が幅広化するほど切断刃も大きくする必要が生じ高コストとなる。また、特にアモルファス薄帯は電磁鋼板に比べて堅いために、幅広のアモルファス材料の切断は困難である。なお、アモルファス薄帯を用いる変圧器に限らず、電磁鋼板を用いる場合にも、同様の課題がある。 As the iron core material for transformers and the like, amorphous strips with good characteristics and small thickness are used instead of electrical steel sheets. It is suitable because the thickness is small and the eddy current is also small. Transformers using amorphous strips in the current market are of the winding core type, while in order to be used for large transformers, it is necessary to use the stacked iron core type. As shown in FIG. 14A, the width of the amorphous strip is determined by the standard, but there is no wide one suitable for a large transformer as compared with the magnetic steel sheet. Further, the amorphous strip is manufactured by pouring a heated and melted member into a low-temperature roller and spreading it, and it is generally difficult to manufacture a wide amorphous strip due to the manufacturing principle thereof. Therefore, in order to make the width wider, as shown in FIG. 14 (b), it is necessary to partially overlap the two amorphous strips and join them at the joining portion. Further, as shown in FIG. 14 (c), in order to use the wide amorphous ribbon for the frame type iron core, it is necessary to cut the amorphous ribbon diagonally. However, diagonal cutting requires a corresponding wide cutting blade, and the wider the amorphous strip, the larger the cutting blade becomes, which increases the cost. Further, since the amorphous strip is harder than the electromagnetic steel sheet, it is difficult to cut a wide amorphous material. It should be noted that not only the transformer using the amorphous strip but also the case of using the electromagnetic steel sheet has the same problem.
　本発明は、製造容易な短冊型で、かつ、効率の良い３相の積鉄心変圧器を提供するものである。以下、本発明の実施例を、図面を用いて説明する。なお、実施例を説明するための各図において、同一の構成要素にはなるべく同一の名称、符号を付して、その繰り返しの説明を省略する。 The present invention provides a strip-shaped, easy-to-manufacture, and efficient three-phase stacked iron core transformer. Hereinafter, examples of the present invention will be described with reference to the drawings. In addition, in each figure for demonstrating an embodiment, the same constituent elements are given the same name and reference numeral as much as possible, and the repeated description thereof will be omitted.
  本発明の実施例１に関し、図１から図１２を用いて説明する。実施例１に係る積鉄心静止誘導器は、脚部およびヨーク部が、２枚の短冊状の磁性体部材を短辺方向に並べた鉄心ブロック体を複数枚積層して形成されている。図１は、本実施例の３相の積鉄心静止誘導機器に用いられる積鉄心の１層目を示す図である。図１に示すように、本実施例の脚部５およびヨーク部６は、ａ，ｂ，ｃ，ｄ，ｅの５種類の鉄心ブロックのいずれかで形成され、これらを互いに突き合わせて積鉄心を構成している。また、脚部とヨーク部の突き合わせ部分としては、中央３交差部分（図１のアで示された部分）と、側方２交差部分（図１のイで示された部分）と、を有している。ここで、中央３交差部分は、中央脚部５’の端部に対して一方側（右側）および他方側（左側）からヨーク部６の端部が突き合わされる部分であり、側方２交差部分は、側方（右側または左側）の脚部５に対してヨーク部６の端部が突き合わされる部分である。なお、本実施例では、鉄心開口部は長さＬの正方形である。 The first embodiment of the present invention will be described with reference to FIGS. 1 to 12. The stacked iron core stationary inducer according to the first embodiment is formed by stacking a plurality of iron core block bodies in which two strip-shaped magnetic members are arranged in the short side direction in a leg portion and a yoke portion. FIG. 1 is a diagram showing the first layer of a steel core used in the three-phase product core static induction device of this embodiment. As shown in FIG. 1, the leg portion 5 and the yoke portion 6 of this embodiment are formed of any of five types of iron core blocks a, b, c, d, and e, and these are abutted against each other to form a stacked iron core. It is composed. Further, as the abutting portion between the leg portion and the yoke portion, there are a central 3 intersection portion (the portion shown by A in FIG. 1) and a side 2 intersection portion (the portion shown by B in FIG. 1). is doing. Here, the central 3 crossing portion is a portion where the end portion of the yoke portion 6 is abutted from one side (right side) and the other side (left side) with respect to the end portion of the central leg portion 5', and the side 2 crossing portion. The portion is a portion where the end portion of the yoke portion 6 is abutted against the lateral (right side or left side) leg portion 5. In this embodiment, the iron core opening is a square having a length L.
　図２は、基本となるａからｆの６種類のブロックの構成を示す図である。各ブロックは素材幅ｗの箔である磁性体部材１１，１２を中央で接合したもので、aからfはそれぞれ長さの組合せが異なる。ブロックａは、幅ｗで長さがＬの長方形の第１磁性体部材１１と、幅ｗで長さＬ＋２ｗの長方形の第２磁性体部材１２と、を両端がｗとなるようシフトさせ、隣接する対向面の中央の接合部１３で接合したものである。以下、同様にｂからeは、幅ｗの素材の磁性体部材を２枚ずつシフト幅ｗとなるよう組み合わせ接合したブロックである。fは、Ｌ＋ｗの長方形の磁性体部材を２枚接合したブロックである。接合方法は問わないが、接合部に厚みが生じないスポット溶接などの接合方法であれば、接合部に厚みが出ないため鉄心の占積率を向上させることができる。また、接合部に厚みが出ないことにより、鉄心ブロック体を積み重ねる工程において、位置ずれが起こりにくく生産性が向上する。これらを用い、以下積層体を構成した。 FIG. 2 is a diagram showing the configuration of six types of blocks a to f, which are the basics. Each block is formed by joining magnetic members 11 and 12 which are foils having a material width w at the center, and a to f have different length combinations. The block a is adjacent to a rectangular first magnetic member 11 having a width w and a length L and a rectangular second magnetic member 12 having a width w and a length L + 2w so that both ends are w. It is joined at the joint portion 13 at the center of the facing surface. Hereinafter, similarly, b to e are blocks in which two magnetic material members having a width w are combined and joined so as to have a shift width w. f is a block in which two L + w rectangular magnetic members are joined. The joining method is not limited, but if it is a joining method such as spot welding in which the joining portion does not have a thickness, the space factor of the iron core can be improved because the joining portion does not have a thickness. Further, since the joint portion is not thick, the position shift is less likely to occur in the process of stacking the iron core blocks, and the productivity is improved. Using these, the following laminated body was constructed.
　図３は、本実施例の積鉄心の２層目以降を示す図である。図３に示すように、２層目と３層目は、図１に示す１層目とは異なる配置となっている。そして、４層目は２層目と同じ、５層目は１層目と同じ、６層目は３層目と同じ配置とし、３種類の層を繰り返して積層したこの６層が構成単位となる。 FIG. 3 is a diagram showing the second and subsequent layers of the steel core of this embodiment. As shown in FIG. 3, the second layer and the third layer have different arrangements from the first layer shown in FIG. The fourth layer is the same as the second layer, the fifth layer is the same as the first layer, the sixth layer is the same arrangement as the third layer, and these six layers, in which three types of layers are repeatedly laminated, are the constituent units. Become.
　まず、本実施例の積鉄心の側方２交差部分においては、図１および図３に示すように、脚部およびヨーク部が、第１磁性体部材と、第１磁性体部材より長い第２磁性体部材と、を有している。そして、脚部またはヨーク部の一方の第１磁性体部材および第２磁性体部材の端面に、脚部またはヨーク部の他方の第１磁性体部材および第２磁性体部材の側面が、階段状に付き合わされている。 First, in the lateral two intersections of the steel core of the present embodiment, as shown in FIGS. 1 and 3, the leg portion and the yoke portion are the first magnetic material member and the second magnetic material member longer than the first magnetic material member. It has a magnetic material member. Then, on the end surface of one of the first magnetic material member and the second magnetic material member of the leg portion or the yoke portion, the side surface of the other first magnetic material member and the second magnetic material member of the leg portion or the yoke portion has a stepped shape. Have been dating.
　次に、本実施例の積鉄心の中央３交差部分においては、図１および図３に示すように、脚部およびヨーク部は、磁性体部材の端部が長辺方向にずれたブロック体の層を含んでいる。そして、脚部における磁性体部材がずれて生じる領域に、ヨーク部の一部が位置し、ヨーク部における磁性体部材がずれて生じる領域に、脚部の一部が位置する。 Next, in the central three intersections of the steel core of the present embodiment, as shown in FIGS. 1 and 3, the legs and the yoke are formed of a block body in which the ends of the magnetic member are displaced in the long side direction. Contains layers. Then, a part of the yoke portion is located in the region where the magnetic material member is displaced in the leg portion, and a part of the leg portion is located in the region where the magnetic material member is displaced in the yoke portion.
　磁性体部材１１，１２の材料は、アモルファス合金箔片でも良いし、電磁鋼板でも実施できる。本明細書において、アモルファス薄帯、アモルファス合金箔片またはアモルファス合金薄帯等の呼び方をするがいずれもアモルファス薄帯を指すものである。また、磁性体部材は、アモルファス箔片と電磁鋼板やナノ結晶箔を積層したクラッド材でも良いし、ナノ結晶箔単体の薄帯であっても良い。アモルファス箔片は、電磁鋼板の板厚に比べて薄く、凡そ電磁鋼板の十分の一の厚さである。そのため、２つのアモルファス箔片を幅方向に接合したものを、複数重ねて鉄心ブロック体とすることにより、電磁鋼板と同様に取り扱うことができる。アモルファス薄帯の２枚の磁性体部材１１，１２を接合したものを鉄心ブロック体として、互い違いに積層することで、鉄心の特性を向上させることができる。また、接合したものを１０枚から２０枚程度重ね合わせ鉄心ブロック体とした場合には、製造の際に鉄心ブロック体ごとに組み合わせできるため、生産性が向上する。以下このような構成とする理由を述べる。 The materials of the magnetic members 11 and 12 may be amorphous alloy foil pieces or electromagnetic steel sheets. In the present specification, the terms amorphous strip, amorphous alloy foil piece, amorphous alloy strip, etc. are referred to, but all of them refer to the amorphous strip. Further, the magnetic material member may be a clad material in which an amorphous foil piece and an electromagnetic steel sheet or a nanocrystal foil are laminated, or may be a thin band of a nanocrystal foil alone. The amorphous foil piece is thinner than the thickness of the electrical steel sheet, and is about one tenth the thickness of the electrical steel sheet. Therefore, by joining a plurality of amorphous foil pieces joined in the width direction to form an iron core block body, it can be handled in the same manner as an electromagnetic steel sheet. The characteristics of the iron core can be improved by forming the iron core block body obtained by joining the two magnetic material members 11 and 12 of the amorphous thin band and laminating them alternately. Further, when about 10 to 20 pieces of the joined pieces are stacked to form an iron core block body, the iron core block body can be combined for each iron core block body at the time of manufacturing, so that the productivity is improved. The reason for such a configuration will be described below.
　図４は、側方２交差点部分における、直流励磁した磁束密度の計算結果を示した図である。鉄心は幅１７０ｍｍのアモルファス箔１０枚を一層として束ね、上下２層に重ねたもので、（ａ）が額縁、（ｂ）が短冊構成である。励磁コイルは２０ターン、電流は４Ａとした。交差点の反対側の箔どうしは厚さ２０ｍｍの鉄板で磁束を還流させた。励磁コイルから５５ｍｍ位置の断面を計算位置とした磁束密度平均値を比較した。結果（ａ）額縁型では箔全面に磁束密度が高く、計算位置での平均磁束密度は１．５Ｔであった。これに対し（ｂ）短冊型では、重ね部分に磁束密度が低い領域が大きく、この結果、磁束がうまく還流せず、計算位置での平均磁束密度は１．２Ｔと低く、励磁効率が悪いことがわかる。 FIG. 4 is a diagram showing the calculation results of the DC-excited magnetic flux density at the two side intersections. The iron core is made by bundling 10 pieces of amorphous foil having a width of 170 mm as one layer and stacking them in two upper and lower layers. (A) is a frame and (b) is a strip structure. The exciting coil was set to 20 turns and the current was set to 4 A. The magnetic flux was recirculated between the foils on the opposite side of the intersection with an iron plate having a thickness of 20 mm. The average magnetic flux density values were compared with the cross section 55 mm from the exciting coil as the calculated position. Results (a) In the frame type, the magnetic flux density was high on the entire surface of the foil, and the average magnetic flux density at the calculated position was 1.5T. On the other hand, in (b) the strip type, the region where the magnetic flux density is low is large in the overlapped portion, and as a result, the magnetic flux does not return well, the average magnetic flux density at the calculated position is as low as 1.2 T, and the excitation efficiency is poor. I understand.
　図５は、本実施例の積鉄心１の側方２交差部分の構造を示した図である。図５（ａ）では、第１の鉄心ブロック体３０で構成されるヨーク部における第１磁性体部材３１および第２磁性体部材３２の端面に、第２の鉄心ブロック体３５で構成される脚部における第１磁性体部材３６および第２磁性体部材３７の側面が、階段３９状に付き合わされている。
図５（ｂ）では、第２の鉄心ブロック体３５で構成される脚部における第１磁性体部材３６および第２磁性体部材３７の端面に、第１の鉄心ブロック体３０で構成されるヨーク部における第１磁性体部材３１および第２磁性体部材３２の側面が、階段３９状に付き合わされている。ここでは、単一の幅が図４の箔の幅１７０ｍｍの１／２の８５ｍｍとした箔を、長さ８５ｍｍシフトさせて接合したブロックを互い違いに並べたもので、図５（ａ）を上層、図５（ｂ）を下層とし、図４と同様に励磁した計算を行った。 FIG. 5 is a diagram showing the structure of the lateral 2 intersections of the product core 1 of this embodiment. In FIG. 5A, a leg made of a second iron core block body 35 is attached to the end faces of the first magnetic body member 31 and the second magnetic body member 32 in the yoke portion made of the first iron core block body 30. The side surfaces of the first magnetic material member 36 and the second magnetic material member 37 in the portion are attached to each other in a staircase shape.
In FIG. 5B, a yoke composed of the first iron core block body 30 is attached to the end faces of the first magnetic material member 36 and the second magnetic material member 37 in the leg portion composed of the second iron core block body 35. The side surfaces of the first magnetic material member 31 and the second magnetic material member 32 in the portion are attached to each other in a staircase shape. Here, the blocks having a single width of 85 mm, which is 1/2 of the width of 170 mm of the foil of FIG. 4, are shifted by a length of 85 mm and joined, and the blocks are arranged alternately. , FIG. 5 (b) was used as the lower layer, and the excitation calculation was performed in the same manner as in FIG.
　図６は、本実施例の側方２交差部分に励磁した計算結果を示す図である。図４（ｂ）の短冊型と比較すると、磁束密度の低い領域は上層及び下層に矢印で示した部分に存在するが、その領域は図４（ｂ）の短冊型より小さい。また、図６（ｃ）の２層での結果から、側方２交差部分では、図５（ａ）（ｂ）の２層を基本に積み上げていけば良いことがわかった。 FIG. 6 is a diagram showing a calculation result excited at two lateral intersections of this embodiment. Compared with the strip type of FIG. 4 (b), the region having a low magnetic flux density exists in the portion indicated by the arrow in the upper layer and the lower layer, but the region is smaller than the strip type of FIG. 4 (b). In addition, from the results of the two layers of FIG. 6 (c), it was found that the two layers of FIGS. 5 (a) and 5 (b) should be stacked on the basis of the two lateral intersections.
　図７は、中央３交差部分における設計方法を示す図である。図７（ａ）は幅１７０ｍｍのアモルファス箔をＴ字型に交差させ、交差点の反対側を厚さ１００ｍｍ、幅６５ｍｍの鉄ブロックで還流させた構造としている。また、箔の交差点中心から左右に３００ｍｍずつの位置および下に１５０ｍｍの位置にコイルを置き、同じく交差点中心から右に２００ｍｍ（図７のｐ1，以下「計算位置１」）と下に１００ｍｍ（図７のｐ2，以下「計算位置２」）で平均磁束密度の計測を行った。コイルは２０ターンで電流条件は次のように決めた。 FIG. 7 is a diagram showing a design method at the central 3 intersection. FIG. 7A has a structure in which an amorphous foil having a width of 170 mm is crossed in a T shape and the opposite side of the intersection is refluxed with an iron block having a thickness of 100 mm and a width of 65 mm. In addition, the coil is placed 300 mm to the left and right from the center of the intersection of the foil and 150 mm below it, and 200 mm to the right (p1 in FIG. 7, hereinafter "calculated position 1") and 100 mm below (Fig. 7). The average magnetic flux density was measured at p2 of 7 (hereinafter referred to as "calculation position 2"). The coil had 20 turns and the current conditions were determined as follows.
　図７（ｂ）は、３相交流のｕ，ｖ，ｗ波形を示す。波形は位相が１２０°ずれている。
縦軸強度は相対値である。ここで、case１とcase２の位置で１相の電流が０となる。この条件を仮定して（ａ）構造の２つのコイルに直流通電し、磁束が横に流れるヨーク部のみとなるケース１と、下から右に流れ脚部からヨーク部へ流れるケース２と、をそれぞれ計算することで励磁効率を比較した。計測位置はケースにかかわらず励磁コイルから５０ｍｍ交差点側とした。なお、図７は額縁構造の例である。 FIG. 7B shows u, v, w waveforms of three-phase alternating current. The waveform is 120 ° out of phase.
The vertical axis intensity is a relative value. Here, the current of one phase becomes 0 at the positions of case 1 and case 2. Assuming this condition, the case 1 in which direct current is applied to the two coils of the structure (a) and the magnetic flux flows laterally only in the yoke portion, and the case 2 in which the magnetic flux flows from the bottom to the right and flows from the leg portion to the yoke portion. The excitation efficiencies were compared by calculating each. The measurement position was set to the intersection side 50 mm from the exciting coil regardless of the case. Note that FIG. 7 is an example of a frame structure.
　図８は、図７の額縁構造で、ケース１とケース２の計算結果を示す図である。ケース１では、図８（ａ）に示すように、磁束はヨーク全体に流れ、計算位置１および２の平均磁束密度はそれぞれ１．４５Ｔおよび０．０４Ｔとなった。一方、ケース２でも、図８（ｂ）に示すように、脚からヨーク片側に効率よく流れ、計算位置１および２の平均磁束密度はそれぞれ１．４８Ｔおよび１．５１Ｔとなった。 FIG. 8 is a diagram showing the calculation results of Case 1 and Case 2 in the frame structure of FIG. 7. In Case 1, as shown in FIG. 8A, the magnetic flux flows through the entire yoke, and the average magnetic flux densities at the calculated positions 1 and 2 are 1.45T and 0.04T, respectively. On the other hand, also in Case 2, as shown in FIG. 8B, the flow efficiently flows from the leg to one side of the yoke, and the average magnetic flux densities at the calculated positions 1 and 2 are 1.48T and 1.51T, respectively.
　図９は、短冊形構造の中央３交差部分の例を示す図であり、第１層はヨーク側を単一ブロック、これに垂直に接する脚ブロックとし、第２層はヨーク側のブロックを２分割し、脚ブロックをその分突き出させ、これら２層を組み合わせて構成したものである。図８と同じ励磁条件での計算位置１および２の平均磁束密度は、ケース１が（１．２４Ｔ，０．０３Ｔ）、ケース２が（１．２３Ｔ,１．３４Ｔ）で、どのケースでも１５％程度磁束密度が小さい。 FIG. 9 is a diagram showing an example of the central three intersections of the strip-shaped structure. The first layer has a single block on the yoke side and a bundle branch block perpendicular to the block, and the second layer has two blocks on the yoke side. It is divided, the bundle branch block is projected by that amount, and these two layers are combined to form a structure. The average magnetic flux densities of the calculated positions 1 and 2 under the same excitation conditions as in FIG. 8 are (1.24T, 0.03T) in case 1 and (1.23T, 1.34T) in case 2, and are 15 in all cases. The magnetic flux density is small by about%.
　図１０は、中央３交差部分の脚部について、第１層と第２層を左右非対称とした場合に励磁した計算結果を示す図である。なお、脚部及びヨーク部は、幅８５ｍｍの２枚の磁性体部材を接合して構成したブロックを組み合わせたものであり、上下の２層で脚部の端部のシフト位置が８５ｍｍ変えてある。図１０（ａ）は、ヨーク部の端面のうち、脚部から遠い側にある磁性体部材の端面が、脚部の端部のシフト位置にて、ヨーク部どうしが突き合わされた構造を示す。図１０（ｂ）は、ヨーク部の端面のうち、脚部から遠い側にある磁性体部材の端面が、中央３交差部分の中心にて、ヨーク部どうしが突き合わされた構造を示す。図１０（ｃ）は、図１０（ａ）と図１０（ｂ）との中間的な構造を示す。励磁した結果、ケース１，２とも、（ｂ）の構造が高い平均磁束密度となった。これより脚を左右非対称とした場合、ヨーク接点は中心が良いことが分かる。 FIG. 10 is a diagram showing the calculation results excited for the legs at the central 3 intersections when the first layer and the second layer are left-right asymmetric. The legs and yoke are a combination of blocks formed by joining two magnetic members with a width of 85 mm, and the shift positions of the ends of the legs are changed by 85 mm in the upper and lower two layers. .. FIG. 10A shows a structure in which the end faces of the magnetic member on the side far from the leg portion of the end faces of the yoke portion are butted against each other at the shift position of the end portion of the leg portion. FIG. 10B shows a structure in which the end faces of the magnetic member on the side far from the legs of the end faces of the yoke portions are butted against each other at the center of the central three intersections. FIG. 10 (c) shows an intermediate structure between FIGS. 10 (a) and 10 (b). As a result of excitation, the structure of (b) had a high average magnetic flux density in both cases 1 and 2. From this, it can be seen that the center of the yoke contact is good when the legs are asymmetrical.
　図１１は、中央３交差部分の脚部について、第１層と第２層を左右対称とした場合に励磁した計算結果を示す図である。図１１（ａ）は、ヨーク部の端面のうち、脚部から遠い側にある磁性体部材の端面が、中央３交差部分の中心から８５ｍｍはずした位置にて、ヨーク部どうしが突き合わされた構造を示す。図１１（ｂ）は、ヨーク部の端面のうち、脚部から遠い側にある磁性体部材の端面が、中央３交差部分の中心にて、ヨーク部どうしが突き合わされた構造を示す。励磁した結果、ケース１，２とも、（ｂ）の構造が高い平均磁束密度となった。これにより、脚を左右対称とした場合でも、ヨーク接点は中心が良いことが分かる。 FIG. 11 is a diagram showing the calculation results excited for the legs at the central 3 intersections when the first layer and the second layer are symmetrical. FIG. 11A shows a structure in which the yoke portions are butted against each other at a position where the end surface of the magnetic member on the side far from the leg portion of the end surface of the yoke portion is 85 mm away from the center of the central 3 intersecting portion. Is shown. FIG. 11B shows a structure in which the end faces of the magnetic member on the side far from the legs of the end faces of the yoke portions are butted against each other at the center of the central three intersections. As a result of excitation, the structure of (b) had a high average magnetic flux density in both cases 1 and 2. From this, it can be seen that the center of the yoke contact is good even when the legs are symmetrical.
　図１２は、図１０および図１１の結果から、中央３交差部分を第１，第２，第３の三層構造とした場合に励磁した計算結果を示す図である。図１２に示すように、いずれもヨーク接点は中心に置き、第１，第２層は脚部を左右非対称に、第３層は脚部を左右対称としたものである。励磁した結果、ケース１，２とも、額縁型から５％の磁束密度低下となり、効率が良いことがわかった。 FIG. 12 is a diagram showing calculation results excited from the results of FIGS. 10 and 11 when the central 3 intersecting portion has a first, second, and third three-layer structure. As shown in FIG. 12, the yoke contacts are placed in the center in each case, the legs of the first and second layers are asymmetrical, and the legs of the third layer are symmetrical. As a result of excitation, it was found that the magnetic flux density of both cases 1 and 2 was reduced by 5% from that of the frame type, and the efficiency was good.
　以上から、２枚の短冊状の磁性体部材を短辺方向に並べた鉄心ブロック体で脚部とヨーク部を構成する場合の３相鉄心の最適構造は、側方２交差部分では２層、中央３交差部分では３層の組み合わせが良い。従って、図２に示すような、２と３の最小公倍数である６種類のブロックを用いれば、できるだけ少ない種類で鉄心を構成できる。また、図１および図３で示した６層を繰り返すことで、所望の積鉄心を実現できることが分かる。 From the above, the optimum structure of the three-phase iron core when the legs and the yoke are composed of the iron core block body in which two strip-shaped magnetic members are arranged in the short side direction is two layers at the two lateral intersections. A combination of three layers is good at the central three intersections. Therefore, if six types of blocks, which are the least common multiples of 2 and 3, as shown in FIG. 2, are used, the iron core can be constructed with as few types as possible. Further, it can be seen that the desired steel core can be realized by repeating the 6 layers shown in FIGS. 1 and 3.
　本実施例によれば、製造容易な短冊型で、効率の良い積鉄心変圧器を提供することができる。また、上下の層で、鉄心ブロック体の突合せ部の位置を変えた６層構成とすることにより、磁束の流れを良好にし、効率化を図ることができる。さらに、本実施例では、２枚の磁性体部材を接合した鉄心ブロック体を組み合わせて積鉄心を構成したので、製造が容易となる。 According to this embodiment, it is possible to provide an efficient steel core transformer with a strip type that is easy to manufacture. Further, by forming a 6-layer structure in which the positions of the butt portions of the iron core block body are changed between the upper and lower layers, the flow of magnetic flux can be improved and the efficiency can be improved. Further, in this embodiment, since the iron core block body in which two magnetic material members are joined is combined to form a stacked iron core, the production becomes easy.
　以下、本実施例の鉄心を実際に製作して確認した効果について説明する。初めに、厚さ２５マイクロメートルで幅８５ｍｍのアモルファス箔ロールを２つ用意し、左右に並べて引き出し、中心をスポット接合して幅１７０ｍｍのアモルファスロールを作製した。次に、８５ｍｍ幅の切断刃２枚をそれぞれが接合箔の左右となるよう配置し、送りと切断タイミングを調整して図２のブロック体に切り出した。鉄心開口部Ｌは３００ｍｍとした。次に、同じブロックを１枚ずつ重ね、再びスポット接合して厚さ２５０マイクロメートルとなるブロック体を形成した。次に、図１と図３に示すブロック体を組み合わせた６層を単位として４０単位を積み上げ、総厚６０ｍｍの鉄心Ａ（本実施例）を製作した。 Hereinafter, the effect of actually manufacturing and confirming the iron core of this embodiment will be described. First, two amorphous foil rolls having a thickness of 25 micrometers and a width of 85 mm were prepared, pulled out side by side, and spot-bonded at the centers to prepare an amorphous roll having a width of 170 mm. Next, two cutting blades having a width of 85 mm were arranged so as to be on the left and right sides of the joining foil, and the feed and cutting timing were adjusted to cut into the block body of FIG. The iron core opening L was set to 300 mm. Next, the same blocks were stacked one by one and spot-bonded again to form a block body having a thickness of 250 micrometers. Next, 40 units were stacked in units of 6 layers in which the block bodies shown in FIGS. 1 and 3 were combined to produce an iron core A (this embodiment) having a total thickness of 60 mm.
　比較のため、別途幅１７０ｍｍのアモルファス箔を短冊に切断し、１０枚を単位として接合し短冊鉄心箔を準備した。開口部１７０ｍｍとして短冊鉄心を積厚６０ｍｍとなるよう鉄心Ｂ（比較例）を製作した。鉄心ＡおよびＢの３つの脚部に直径０．７ｍｍエナメル線を２００ターンずつ巻き、別途検知線をヨーク部に２０ターン巻き、何れもピーク値１Ａとなるよう５０Ｈｚで３相交流励磁し、検知巻き線出力からヨーク部のピーク磁束密度を比較した。その結果、鉄心Ａは鉄心Ｂより２０％ピーク磁束密度が大きく、本実施例の短冊型鉄心が高効率であることがわかった。 For comparison, an amorphous foil with a width of 170 mm was separately cut into strips and joined in units of 10 sheets to prepare a strip iron core foil. An iron core B (comparative example) was manufactured so that the strip iron core had a stack thickness of 60 mm with an opening of 170 mm. A 0.7 mm diameter enamel wire is wound around the three legs of the iron cores A and B for 200 turns each, and a separate detection wire is wound around the yoke for 20 turns. The peak magnetic flux density of the yoke part was compared from the winding output. As a result, it was found that the iron core A has a 20% higher peak magnetic flux density than the iron core B, and the strip-shaped iron core of this embodiment has high efficiency.
  本発明の実施例２に関し、図１５から図２４を用いて実施例２について説明する。実施例２に係る積鉄心静止誘導器は、脚部およびヨーク部が、４枚の短冊状の磁性体部材を短辺方向に並べた鉄心ブロック体を複数枚積層して形成されている。 Regarding Example 2 of the present invention, Example 2 will be described with reference to FIGS. 15 to 24. The stacked iron core stationary inducer according to the second embodiment is formed by stacking a plurality of iron core block bodies in which four strip-shaped magnetic members are arranged in the short side direction in a leg portion and a yoke portion.
　本実施例では、厚さ２５マイクロメートルで、幅１７０ｍｍの５層巻きアモルファスロール４つを並べ、ロール端部間を接合して合計幅６８０ｍｍの広幅ロールを作製した。さらに、１７０ｍｍ幅用の切断刃４枚を６８０ｍｍ間に２列に並べ、接合されたアモルファスロールを切り離し、短冊に形成できるようにした。４枚接合の場合、端部構成は複雑化するが、以下のように組み合わせた。 In this example, four 5-layer amorphous rolls having a thickness of 25 micrometers and a width of 170 mm were arranged and the ends of the rolls were joined to prepare a wide roll having a total width of 680 mm. Furthermore, four cutting blades for 170 mm width were arranged in two rows between 680 mm, and the bonded amorphous rolls were separated so that they could be formed into strips. In the case of four-sheet joining, the end configuration is complicated, but they are combined as follows.
　図１５は、４分割鉄心の場合における側方２交差部分の構成を示す図である。４分割鉄心の側方２交差部分では、４枚のアモルファスをその１枚の幅分後退させて切断し、４分割端部Ａではギャップが脚部５側に、４分割端部Ｂではギャップがヨーク部６側に出るよう組み合わせる。この４分割端部Ａおよび４分割端部Ｂを１層または複層ごとに組み合わせて重ねて鉄心を構成する。後退幅aは、接合前１枚分の幅ａで揃えるのが良く、これにより端部での反磁界を低下させ、効率が向上する。 FIG. 15 is a diagram showing the configuration of two lateral intersections in the case of a four-divided iron core. At the two lateral intersections of the four-divided iron core, four amorphous pieces are cut back by the width of one of them, and the gap is on the leg 5 side at the four-divided end A and the gap is on the four-divided end B. Combine so that it comes out on the yoke part 6 side. The four-divided end portion A and the four-divided end portion B are combined for each layer or multiple layers to form an iron core. The receding width a should be aligned with the width a of one sheet before joining, whereby the demagnetic field at the end portion is reduced and the efficiency is improved.
　図１６は、本実施例の３相の積鉄心の構成を示す図である。鉄心を構成する部材の最小化を図るため、点Ｐに示す鉄心の中心点に対し点対称に配置するのが良い。したがって、以下では、右半分の鉄心構成を例に挙げて、中央３交差部分の構成を説明する。 FIG. 16 is a diagram showing the configuration of a three-phase stacked iron core of this embodiment. In order to minimize the members constituting the iron core, it is preferable to arrange them point-symmetrically with respect to the center point of the iron core indicated by the point P. Therefore, in the following, the configuration of the central three intersections will be described by taking the iron core configuration of the right half as an example.
　図１７は、中央脚部５’のうち、鉄心開口部側の磁性体部材（以下、第１脚部材）の長さｂがＬ＋ａ（符号５０）の場合に、反鉄心開口部側の磁性体部材（以下、第２脚部材）の長さを変えて行ったときの状態を示す図である。なお、Ｌは開口幅、ａは元素材幅（本実施例では１７０ｍｍ）である。 FIG. 17 shows a magnetic material on the anti-iron core opening side when the length b of the magnetic material member (hereinafter, the first leg member) on the iron core opening side of the central leg portion 5'is L + a (reference numeral 50). It is a figure which shows the state when the length of a member (hereinafter referred to as a 2nd leg member) is changed. L is the opening width, and a is the original material width (170 mm in this embodiment).
　ここで、第２脚部材の長さは、第１脚部材の長さ以上となる必要がある。また、第２脚部材の長さは、Ｌ＋ａ（長さ５０）の場合、ヨーク部６の端面が４つ並んでしまい、ギャップ長が４ａになるため、Ｌ＋２ａ（長さ５１）以上とする必要がある。さらに、第２脚部材が長さ５１の場合は、ヨーク部６の端面が３つ並ぶため、ギャップ長が３ａになる。
しかし、ギャップ長が３ａになると、素材端部が磁路に対し長くなるため損失が増加してしまう。そこで、以下では、ギャップ長が３ａ以上になるのを避ける条件で、第２脚部材の長さや位置の適否を判定することにする。 Here, the length of the second leg member needs to be longer than the length of the first leg member. Further, in the case of L + a (length 50), the length of the second leg member needs to be L + 2a (length 51) or more because four end faces of the yoke portions 6 are lined up and the gap length is 4a. There is. Further, when the second leg member has a length of 51, three end faces of the yoke portions 6 are lined up, so that the gap length is 3a.
However, when the gap length becomes 3a, the end portion of the material becomes longer with respect to the magnetic path, so that the loss increases. Therefore, in the following, it is decided to determine the suitability of the length and position of the second leg member under the condition of avoiding the gap length of 3a or more.
　図１７に示すように、第２脚部材の長さがＬ＋３ａ（長さ５２）の場合、第２脚部材の配置としては３通りが考えられる。しかし、いずれの配置であっても、第２脚部材の上方または下方において、ギャップ長が３ａ以上になってしまうため、不適となり（△と表記）、可能な構成は０となる。 As shown in FIG. 17, when the length of the second leg member is L + 3a (length 52), there are three possible arrangements of the second leg member. However, regardless of the arrangement, the gap length becomes 3a or more above or below the second leg member, which makes it unsuitable (denoted by Δ), and the possible configuration is 0.
　次に、第２脚部材の長さがＬ＋４ａ（長さ５３）の場合、第２脚部材の配置としては３通りが考えられる。このうち、第２脚部材の上端面が第１脚部材の上端面から長さ２ａだけ出張った配置であれば、条件を満たすため構成することが可能である。しかも、この配置は、上下非対称であるため、上下を入れ替えた２パターンが実現できる。したがって、１×２の２種類の構成が可能となっている。なお、他の２通りについては、いずれも第２脚部材の上方または下方において、ギャップ長が３ａ以上になってしまうため、不適となる。 Next, when the length of the second leg member is L + 4a (length 53), there are three possible arrangements of the second leg member. Of these, if the upper end surface of the second leg member is arranged so as to travel by a length of 2a from the upper end surface of the first leg member, it can be configured to satisfy the condition. Moreover, since this arrangement is vertically asymmetrical, it is possible to realize two patterns in which the top and bottom are interchanged. Therefore, two types of configurations of 1 × 2 are possible. The other two methods are unsuitable because the gap length becomes 3a or more above or below the second leg member.
　次に、第２脚部材の長さがＬ＋５ａ（長さ５４）の場合、第２脚部材の配置としては２通りが考えられる。このうち、第２脚部材の上端面が第１脚部材の上端面から長さ２ａだけ出張った配置であれば、条件を満たすため構成することが可能である。しかも、この配置は、上下非対称であるため、上下を入れ替えた２パターンが実現できる。したがって、１×２の２種類の構成が可能となっている。なお、第２脚部材の上端面が第１脚部材の上端面から長さ３ａ出張った配置では、第２脚部材の側方において、ギャップ長が３ａになってしまうため、不適となる。 Next, when the length of the second leg member is L + 5a (length 54), there are two possible arrangements of the second leg member. Of these, if the upper end surface of the second leg member is arranged so as to travel by a length of 2a from the upper end surface of the first leg member, it can be configured to satisfy the condition. Moreover, since this arrangement is vertically asymmetrical, it is possible to realize two patterns in which the top and bottom are interchanged. Therefore, two types of configurations of 1 × 2 are possible. If the upper end surface of the second leg member has a length of 3a from the upper end surface of the first leg member, the gap length becomes 3a on the side of the second leg member, which is unsuitable.
　次に、第２脚部材の長さがＬ＋６ａ（長さ５５）の場合、第２脚部材の側方において、ギャップ長が３ａになってしまうため、不適となる。なお、第２脚部材がさらに長い場合、ヨーク部を脚部が切断する形となり、効率が低下する。 Next, when the length of the second leg member is L + 6a (length 55), the gap length becomes 3a on the side of the second leg member, which is unsuitable. If the second leg member is longer, the leg portion cuts the yoke portion, which reduces efficiency.
　以上述べたように、第１脚部材の長さがＬ＋ａ（長さ５０）の場合に可能な構成の合計は４となる。 As described above, when the length of the first leg member is L + a (length 50), the total number of possible configurations is 4.
　図１８は、第１脚部材の長さがＬ＋２ａ（符号５１）の場合に、第２脚部材の長さを変えて行ったときの状態を示す図である。図１８に示すように、第２脚部材の長さがＬ＋３ａ（長さ５２）の場合、第２脚部材の配置としては２通りが考えられるが、いずれも、第２脚部材の上方または下方において、ギャップ長が３ａ以上になってしまうため、不適となり、可能な構成は０となる。次に、第２脚部材の長さがＬ＋４ａ（長さ５３）の場合、第２脚部材の配置としては３通りあるが、このうち、第２脚部材の上端面が第１脚部材の上端面から長さａだけ出張った配置であれば、構成することが可能である。次に、第２脚部材の長さがＬ＋５ａ（長さ５４）の場合も条件を満たすが、この配置は上下非対称であるため、２パターンの構成が可能である。次に、第２脚部材の長さがＬ＋６ａ（長さ５５）の場合も条件を満たすが、この配置は上下対象であるため、１パターンの構成が可能である。以上述べたように、第１脚部材の長さがＬ＋２ａ（長さ５１）の場合に可能な構成の合計は４となる。 FIG. 18 is a diagram showing a state when the length of the first leg member is L + 2a (reference numeral 51) and the length of the second leg member is changed. As shown in FIG. 18, when the length of the second leg member is L + 3a (length 52), there are two possible arrangements of the second leg member, but both are above or below the second leg member. Since the gap length becomes 3a or more, it becomes unsuitable, and the possible configuration is 0. Next, when the length of the second leg member is L + 4a (length 53), there are three arrangements of the second leg member, of which the upper end surface of the second leg member is above the first leg member. It is possible to configure the arrangement as long as it is arranged on a business trip by the length a from the end face. Next, the condition is also satisfied when the length of the second leg member is L + 5a (length 54), but since this arrangement is vertically asymmetric, two patterns can be configured. Next, the condition is also satisfied when the length of the second leg member is L + 6a (length 55), but since this arrangement is vertically symmetrical, one pattern can be configured. As described above, when the length of the first leg member is L + 2a (length 51), the total number of possible configurations is 4.
　図１９は、第１脚部材の長さがＬ＋２ａ（符号５１ｓ）の場合に、第２脚部材の長さを変えて行ったときの状態を示す図である。図１９では、図１８の場合と同様に第１脚部材の長さはＬ＋２ａであるが、図１８の場合と異なり第１脚部材の配置が下方へ長さａだけずれている。図１９に関する説明は省略するが、この場合に可能な構成は４となる。 FIG. 19 is a diagram showing a state when the length of the first leg member is L + 2a (reference numeral 51s) and the length of the second leg member is changed. In FIG. 19, the length of the first leg member is L + 2a as in the case of FIG. 18, but unlike the case of FIG. 18, the arrangement of the first leg member is shifted downward by the length a. Although the description of FIG. 19 is omitted, the possible configuration in this case is 4.
　図２０は、第１脚部材の長さがＬ＋３ａ（符号５２）の場合に、第２脚部材の長さを変えて行ったときの状態を示す図である。図２０に関する説明も省略するが、この場合に可能な構成は８となる。 FIG. 20 is a diagram showing a state when the length of the first leg member is L + 3a (reference numeral 52) and the length of the second leg member is changed. Although the description with respect to FIG. 20 will be omitted, the possible configuration in this case is 8.
　図２１は、第１脚部材の長さがＬ＋３ａ（符号５２ｓ）の場合に、第２脚部材の長さを変えて行ったときの状態を示す図である。図２１では、図２０の場合と同様に第１脚部材の長さはＬ＋３ａであるが、図２０の場合と異なり第１脚部材の配置が下方へ長さａだけずれている。図２１に関する説明も省略するが、この場合に可能な構成は０である。 FIG. 21 is a diagram showing a state when the length of the first leg member is L + 3a (reference numeral 52s) and the length of the second leg member is changed. In FIG. 21, the length of the first leg member is L + 3a as in the case of FIG. 20, but unlike the case of FIG. 20, the arrangement of the first leg member is shifted downward by the length a. Although the description with respect to FIG. 21 is omitted, the possible configuration in this case is 0.
　図２２は、第１脚部材の長さがＬ＋４ａ（符号５３，５３ｓ）の場合に、第２脚部材の長さを変えて行ったときの状態を示す図である。図２２のうち、第１脚部材が符号５３に示す配置のときに可能な構成は４であり、第１脚部材が符号５３ｓに示す配置（符号５３より下方へ長さａだけずれた配置）のときに可能な構成は０である。 FIG. 22 is a diagram showing a state when the length of the first leg member is L + 4a ( reference numerals 53, 53s) and the length of the second leg member is changed. In FIG. 22, the possible configuration is 4 when the first leg member is arranged as indicated by reference numeral 53, and the arrangement in which the first leg member is indicated by reference numeral 53s (arrangement shifted downward by the length a from the reference numeral 53). The possible configuration at is 0.
　図２３は、第１脚部材の長さがＬ＋５ａ（符号５４）の場合とＬ＋６ａ（符号５５）の場合における第２脚部材の状態を示す図である。図２３に示す通り、第１脚部材が符号５４に示す配置のときも符号５５５に示す配置のときも、可能な構成は０である。 FIG. 23 is a diagram showing the state of the second leg member when the length of the first leg member is L + 5a (reference numeral 54) and when the length of the first leg member is L + 6a (reference numeral 55). As shown in FIG. 23, the possible configuration is 0 regardless of whether the first leg member is arranged according to reference numeral 54 or reference numeral 555.
　図２４は、上述の図１７から図２３で説明した、第１脚部材および第２脚部材の長さと配置の各組合せについて、構成の適否の判定結果を整理した表である。この表に示すように、中央３交差部分における可能な構成の合計は２４となる。ここで、側方２交差部分においては２種類のパターンが存在する。したがって、中央３交差部分と側方２交差部分を合わせた合計の組合せとしては、２４と２の最小公倍数である２４となり、２４層を単位として鉄心を構成するのが望ましいことが分かる。また、本実施例により構成した積厚２００ｍｍのアモルファス積鉄心によれば、幅５５０ｍｍで同じ２００ｍｍ厚で構成した電磁鋼板鉄心より、定格電力で比較して騒音が３ｄＢ低下し、本実施例のアモルファス鉄心の効果が確認できた。 FIG. 24 is a table summarizing the determination results of suitability of the configuration for each combination of the length and arrangement of the first leg member and the second leg member described with reference to FIGS. 17 to 23. As shown in this table, the total number of possible configurations at the central 3 intersections is 24. Here, there are two types of patterns at the two lateral intersections. Therefore, the total combination of the central 3 intersections and the side 2 intersections is 24, which is the least common multiple of 24 and 2, and it is desirable to configure the iron core in units of 24 layers. Further, according to the amorphous steel core having a product thickness of 200 mm configured according to the present embodiment, the noise is reduced by 3 dB compared with the rated power of the electromagnetic steel sheet iron core having a width of 550 mm and the same thickness of 200 mm, and the amorphous core of the present embodiment is used. The effect of the iron core was confirmed.
１…積鉄心、５…脚部、６…ヨーク部、７…コイル、１１…第１磁性体部材、１２…第２磁性体部材、１３…接合部、３０…第１の鉄心ブロック体、３１…第１磁性体部材、３２…第２磁性体部材、３５…第２の鉄心ブロック体、３６…第１磁性体部材、３７…第２磁性体部材、３９…階段、４０…額縁型積鉄心、５０…短冊型積鉄心 1 ... Steel core, 5 ... Leg, 6 ... Yoke, 7 ... Coil, 11 ... First magnetic material member, 12 ... Second magnetic material member, 13 ... Joint, 30 ... First iron core block body, 31 ... 1st magnetic material member, 32 ... 2nd magnetic material member, 35 ... 2nd iron core block body, 36 ... 1st magnetic material member, 37 ... 2nd magnetic material member, 39 ... staircase, 40 ... frame type stacked iron core , 50 ... Strip type steel core

Claims (9)

  1. 　巻線を有する脚部および巻線を有さないヨーク部が、短冊状の磁性体部材で形成され、互いに突き合わされた積鉄心を構成する積鉄心静止誘導機器であって、
    　前記脚部およびヨーク部は、複数の前記磁性体部材が短辺方向に並べられた鉄心ブロック体を複数積層して形成され、
    　前記脚部および前記ヨーク部は、前記磁性体部材の端部が長辺方向にずれた前記鉄心ブロック体の層を含んでおり、
    　前記脚部と前記ヨーク部との突き合わせ部分のうち、中央の前記脚部の端部に対して一方側および他方側から前記ヨーク部の端部が突き合わされる中央３交差部分において、
    　前記脚部における前記磁性体部材がずれて生じる領域に、前記ヨーク部の一部が位置し、前記ヨーク部における前記磁性体部材がずれて生じる領域に、前記脚部の一部が位置することを特徴とする積鉄心静止誘導機器。     The leg portion having a winding and the yoke portion having no winding are formed of a strip-shaped magnetic material member, and form a stacked iron core that is abutted against each other.
    The leg portion and the yoke portion are formed by laminating a plurality of iron core block bodies in which a plurality of the magnetic material members are arranged in the short side direction.
    The leg portion and the yoke portion include a layer of the iron core block body in which the end portion of the magnetic material member is displaced in the long side direction.
    At the central 3 crossing portion where the end portion of the yoke portion is abutted from one side and the other side with respect to the end portion of the central portion of the abutting portion between the leg portion and the yoke portion.
    A part of the yoke portion is located in a region of the leg portion where the magnetic material member is displaced, and a part of the leg portion is located in a region of the yoke portion where the magnetic material member is displaced. Sekisetsu core stationary induction device featuring.
  2. 　請求項１に記載の積鉄心静止誘導機器において、
    　短辺方向に並べられた複数の前記磁性体部材は、隣接する対向面が接合されていることを特徴とする積鉄心静止誘導機器。     In the product core stationary induction device according to claim 1,
    A product core stationary induction device characterized in that a plurality of the magnetic material members arranged in the short side direction are joined to adjacent facing surfaces.
  3. 　請求項１に記載の積鉄心静止誘導機器において、
    　前記脚部および前記ヨーク部は、第１磁性体部材と、前記第１磁性体部材より長い第２磁性体部材と、を有しており、
    　前記脚部と前記ヨーク部との突き合わせ部分のうち、側方の前記脚部の端部に対して前記ヨーク部の端部が突き合わされる側方２交差部分において、
    　前記脚部または前記ヨーク部の一方の前記第１磁性体部材および前記第２磁性体部材の端面に、前記脚部または前記ヨーク部の他方の前記第１磁性体部材および前記第２磁性体部材の側面が、階段状に突き合わされていることを特徴とする積鉄心静止誘導機器。     In the product core stationary induction device according to claim 1,
    The leg portion and the yoke portion have a first magnetic material member and a second magnetic material member longer than the first magnetic material member.
    Of the abutting portion between the leg portion and the yoke portion, at the lateral two intersections where the end portion of the yoke portion is abutted against the side end portion of the leg portion.
    On the end faces of the first magnetic material member and the second magnetic material member on one of the legs or the yoke portion, the first magnetic material member and the second magnetic material member on the other side of the leg portion or the yoke portion. A steel core static induction device characterized in that the sides of the magnet are butted in a staircase pattern.
  4. 　請求項１に記載の積鉄心静止誘導機器において、
    　前記ヨーク部の端面のうち、前記脚部から遠い側にある前記磁性体部材の端面は、前記中央３交差部分の中心で前記ヨーク部どうしが突き合わされていることを特徴とする積鉄心静止誘導機器。     In the product core stationary induction device according to claim 1,
    Of the end faces of the yoke portion, the end face of the magnetic material member on the side far from the leg portion is characterized in that the yoke portions are butted against each other at the center of the central three intersecting portions. device.
  5. 　請求項１に記載の積鉄心静止誘導機器において、
    　前記磁性体部材は、アモルファス磁性部材であることを特徴とする積鉄心静止誘導機器。     In the product core stationary induction device according to claim 1,
    The magnetic material member is a product core static induction device, characterized in that it is an amorphous magnetic member.
  6. 　請求項１に記載の積鉄心静止誘導機器において、
    　前記磁性体部材は、電磁鋼板であることを特徴とする積鉄心静止誘導機器。     In the product core stationary induction device according to claim 1,
    The magnetic material member is a product core static induction device, characterized in that it is an electromagnetic steel sheet.
  7. 　請求項１に記載の積鉄心静止誘導機器において、
    　前記磁性体部材は、アモルファス磁性部材を含むクラッド材であることを特徴とする積鉄心静止誘導機器。     In the product core stationary induction device according to claim 1,
    The magnetic material member is a clad material containing an amorphous magnetic member, and is a product core static induction device.
  8. 　請求項１に記載の積鉄心静止誘導機器において、
    　前記積鉄心は、３つの脚部を有する３相３脚型であることを特徴とする積鉄心静止誘導機器。     In the product core stationary induction device according to claim 1,
    The stacked iron core is a three-phase three-legged type having three legs, and is characterized in that the stacked iron core is a stationary induction device.
  9. 　巻線を有する脚部および巻線を有さないヨーク部を、短冊状の磁性体部材で形成し、互いに突き合わせて積鉄心を構成する積鉄心静止誘導機器の製造方法であって、
    　前記脚部およびヨーク部を、複数の前記磁性体部材を短辺方向に並べられた鉄心ブロック体を複数積層して形成するステップと、
    　前記脚部と前記ヨーク部との突き合わせ部分のうち、中央の前記脚部の端部に対して一方側および他方側から前記ヨーク部の端部が突き合わされる中央３交差部分において、
    　前記脚部における前記磁性体部材がずれて生じる領域に、前記ヨーク部の一部を位置させ、前記ヨーク部における前記磁性体部材がずれて生じる領域に、前記脚部の一部が位置させるステップと、を備えることを特徴とする積鉄心静止誘導機器の製造方法。     A method for manufacturing a steel core static induction device in which a leg portion having a winding and a yoke portion having no winding are formed of a strip-shaped magnetic material member and abutted against each other to form a stacked iron core.
    A step of forming the leg portion and the yoke portion by laminating a plurality of iron core block bodies in which a plurality of the magnetic material members are arranged in the short side direction.
    At the central 3 crossing portion where the end portion of the yoke portion is abutted from one side and the other side with respect to the end portion of the central portion of the abutting portion between the leg portion and the yoke portion.
    A step in which a part of the yoke portion is positioned in a region of the leg portion where the magnetic material member is displaced, and a part of the leg portion is positioned in a region of the yoke portion where the magnetic material member is displaced. And, a method of manufacturing a steel core static induction device, which is characterized by being provided with.
PCT/JP2020/038600 2020-06-16 2020-10-13 Stacked-core stationary induction apparatus and method for manufacturing same WO2021255950A1 (en)

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