JP2019029506A - Transformer - Google Patents

Abstract

To prevent a wound core from being deformed.SOLUTION: A transformer (1) includes an iron core (10) composed of a wound core for winding an amorphous alloy ribbon in an overlapping manner and a winding (20) inserted into the iron core. In the iron core, a plurality of unit laminate bodies (U) in each of which a plurality of amorphous alloy ribbons is laminated is wound, and both end portions of the plurality of unit laminate bodies are overlapped to each other to form an overlap region (Ua). At a position overlapping with the overlap region, an adhesive tape (T2) for regulating the relative displacement of the plurality of unit laminate bodies in the overlap region is provided so as to be laminated.SELECTED DRAWING: Figure 6

Description

  The present invention relates to a transformer, and more particularly to a transformer including a wound iron core in which amorphous alloy ribbons are wound in multiple layers.

  The transformer is a device that converts the voltage of AC power using electromagnetic induction, and includes an iron core that forms a magnetic circuit and a winding (coil) that forms an electric circuit. In such a transformer, what employ | adopted the wound iron core which wound the amorphous alloy ribbon in multiple layers as an iron core is known (for example, refer patent document 1). By using the amorphous alloy ribbon as described above, it is possible to configure an iron core with low loss and excellent magnetic characteristics. The wound iron core of Patent Document 1 includes two leg portions and two yoke portions connecting the upper end portions and the lower end portions of the leg portions, and is surrounded by the leg portions and the yoke portions. An opening is formed.

  Moreover, as a wound iron core using an amorphous alloy ribbon, a configuration in which an outer iron core is provided on the outer peripheral side of an inner iron core that forms an opening is known (for example, see Patent Document 2). In Patent Document 2, an overlap method is adopted, and both ends of the amorphous alloy ribbon wound around the outer iron core are joined so as to overlap each other.

  Here, the amorphous alloy ribbon has a very thin plate thickness for manufacturing reasons, and has a low rigidity. For this reason, in a wound core in which amorphous alloy ribbons are wound in multiple layers, the outer core part of the upper yoke part is not sufficiently supported, and deformation and distortion are likely to occur, and the magnetic properties of the wound core can be degraded. Increases nature. Thus, a configuration is known in which a plate member is provided between the inner iron core portion and the outer iron core portion in the upper yoke portion, and the outer iron core portion is supported from below.

JP 2000-21642 A JP 2007-5470 A

  However, when the plate member is provided as described above, there is a problem that the plate member moves between the inner iron core portion and the outer iron core portion when an external force is applied due to transportation of the transformer or an earthquake. When the plate member moves in this manner, there is a problem that deformation or the like occurs in the wound iron core, resulting in deterioration of the magnetic properties of the wound iron core. Moreover, in a wound core, there exists a problem that a magnetic property as a wound iron core falls by the direction which an overlap joined part opens by transportation, an earthquake, etc ..

  This invention is made | formed in view of this point, and it aims at providing the transformer which can prevent a deformation | transformation etc. of a wound iron core.

  The transformer in the present invention is a transformer comprising a wound iron core in which an amorphous alloy ribbon is wound in an overlapping manner to form an opening, and a winding inserted into the wound iron core. The iron core is a plurality of unit laminates in which a plurality of amorphous alloy ribbons are laminated by the overlap method, and both end portions of the plurality of unit laminates are respectively overlapped to form an overlap region, A fixing member that restricts relative displacement of the plurality of unit laminate bodies in the overlap region is laminated on at least one of the overlap region and the vicinity thereof.

  According to such a configuration, since the fixing member is laminated in the overlap region of the wound core or in the vicinity thereof, even if an external force is applied due to transportation of the transformer or an earthquake, the joint portion at the overlap in the wound core is It is possible to prevent deformation in the opening direction.

  The transformer according to the present invention is a transformer including a wound iron core in which an opening is formed by winding an amorphous alloy ribbon, and a winding inserted into the wound iron core, wherein the wound core is A plurality of leg portions extending in the vertical direction with an inner iron core portion forming the opening and an outer iron core portion disposed on the outer periphery thereof, and connecting the upper ends of the plurality of leg portions. A lower iron part connecting the upper iron part and the lower end part, and further comprising an inter-core plate between the inner iron core part and the outer iron core part in the upper iron part, A fixing member for restricting relative displacement between the inter-core plate and the inner iron core is provided.

  According to such a configuration, since the fixing member that regulates the relative displacement between the inter-core plate and the inner iron core is laminated, the relative displacement even if an external force is applied due to the transportation of the transformer or an earthquake. It is possible to prevent the wound iron core from being deformed due to the above.

  According to the transformer of the present invention, since the fixing members are stacked around the overlap region of the wound iron core and around the core plate, it is possible to prevent the wound iron core from being deformed.

It is a front view which shows the principal part of the transformer which concerns on this Embodiment. It is explanatory drawing of the manufacturing process of the transformer which concerns on this Embodiment. It is explanatory drawing of the manufacturing process of the transformer which concerns on this Embodiment. It is explanatory drawing of the manufacturing process of the transformer which concerns on this Embodiment. It is explanatory drawing of the manufacturing process of the transformer which concerns on this Embodiment. FIG. 6A is a schematic view showing a part of a state in which the unit laminated body of the outer core part is laminated and joined, and FIG. 6B is a plan view of FIG. 6A. It is explanatory drawing of the manufacturing process of the transformer which concerns on this Embodiment.

  Hereinafter, a transformer according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings. In the following, the case where the present invention is applied to a molded transformer will be described. However, the application target of the present invention is not limited to the mold transformer, and can be appropriately changed. For example, the present invention can be applied to dry transformers other than mold transformers (for example, Class H dry transformers), gas-insulated transformers, and oil-filled transformers.

  FIG. 1 is a front view showing a main part of the transformer according to the present embodiment. A transformer 1 shown in FIG. 1 includes an iron core 10 that forms a magnetic circuit, a winding (coil) 20 that forms an electric circuit, and a frame 30 that houses a part of the iron core 10. FIG. 1 shows a transformer 1 having a three-phase three-leg structure in which a part of an iron core 10 inserted into three windings 20 is fixed to a pair of upper and lower frames 30 (301, 302). In addition, about the structure of the transformer used as the application object of this invention, it is not limited to this, It is applicable to the transformer 1 which has arbitrary structures, such as a 3 phase 5 leg structure.

  The iron core 10 is formed of a wound iron core in which amorphous alloy ribbons are wound in multiple layers and are generally rectangular in a front view. More specifically, the iron core 10 is composed of a wound iron core wound with a 25 μm amorphous alloy ribbon. As shown in FIG. 1, the iron core 10 has a pair of inner iron core portions 101 arranged on the inner side and an outer iron core portion 102 arranged on the outer side (outer peripheral side) of the inner iron core portions 101. . Each inner iron core portion 101 is individually wound with an amorphous alloy ribbon. The outer iron core portion 102 is wound with an amorphous alloy ribbon with the inner iron core portion 101 disposed inside.

  An opening 103 is formed at the center of each inner iron core portion 101 constituting the iron core 10. That is, the iron core 10 is formed with a pair of openings 103a and 103b penetrating perpendicularly to the lamination direction of the electromagnetic steel sheets. These openings 103 may be called window portions of the iron core 10. The iron core 10 includes a plurality of (in this embodiment, three) leg portions 11 to 13 extending in the vertical direction and an upper iron portion (first portion) that connects between upper end portions that are one end portions of the leg portions 11 to 13. The yoke portion 14 is provided in a shape including a lower yoke portion (second yoke portion) 15 that connects the lower end portions that are the other end portions of the leg portions 11 to 13. Note that silicon steel plates are disposed on the inner and outer circumferences of the inner iron core portion 101 and the outer circumference of the outer iron core portion 102 in order to maintain the shape of the iron core 10 and reinforce the iron core 10 itself.

  An inter-core plate 104 made of a metal such as stainless steel is disposed between the inner iron core 101 and the outer iron core 102 in the upper iron part 14. The outer core part 102 in the upper iron part 14 is supported from below by the inter-core plate 104.

  The winding 20 has, for example, an inner winding 201 and an outer winding 202 (not shown in FIG. 1, refer to FIG. 2), and the entire surface of these windings 20 is covered with resin or an insulating material containing resin. Has been. For example, an epoxy resin excellent in heat resistance and electrical insulation is used as the resin that covers the winding 20. Each winding 20 is arranged around each leg 11 to 13 of the iron core 10. These windings 20 are positioned with respect to the frame 30 (301, 302) via a spacer member (not shown).

  The frame 30 has an upper frame 301 and a lower frame 302. The upper frame 301 has a box shape opened to the lower side, and is configured to accommodate the upper iron part 14 of the iron core 10 therein. On the other hand, the lower frame 302 has a box shape opened to the upper side, and is configured to accommodate the succeeding iron portion 15 of the iron core 10 therein. These frames 30 function as a jig when the transformer 1 is assembled, and also protect the iron core 10 and the winding 20 after the assembly is completed.

  A plurality of (four in the present embodiment) support plates 40 constituting the support member are fixed to the frame 30. These support plates 40 are disposed in the opening 103 of the iron core 10 and are fixed to the frame 30 from the inside of the iron core 10. More specifically, these support plates 40 are fixed to the frame 30 in a state where the iron core 10 is supported while being in surface contact with the inner side surface 103 c of the opening 103.

  The support plate 40 is formed by, for example, punching and bending a metal plate material such as mild steel. In the present embodiment, the support plate 40 includes a pair of upper support plates 41 and 42 and a pair of lower support plates 43 and 44. The pair of upper support plates 41 and 42 are fixed to the upper frame 301. On the other hand, the pair of lower support plates 43 and 44 are fixed to the lower frame 302. Moreover, the upper side support plate 41 and the lower side support plate 43 are arrange | positioned in the opening part 103a. On the other hand, the upper support plate 42 and the lower support plate 44 are disposed in the opening 103b.

  Hereinafter, the process of manufacturing the transformer 1 having the above configuration will be described with reference to FIGS. 2-7 is explanatory drawing of the manufacturing process of the transformer 1 which concerns on this Embodiment. In addition, in the manufacturing process of the transformer 1 shown below, the overlap method is applied to the opening operation and the closing operation of the iron core 10, and for convenience of explanation, the steps before the opening operation and the steps after the closing operation are omitted. 2 to 5 and 7, a part of the rail R arranged along the production line of the transformer 1 and the lower surface of the lower frame 302 are provided, and the transformer 1 on the rail R is provided. The movement mechanism M which supports the movement of the is shown.

  In the opening operation of the iron core 10, as shown in FIG. 1, the central portion of the rectangular iron-shaped inner core portion 101 and the outer iron core portion 102 that extends in the horizontal direction at the upper iron portion 14 is opened. It is generally U-shaped when viewed from the front (see FIG. 2).

  The opening operation of the iron core 10 is performed in a state where the iron core 10 is fixed to the lower frame 302 (see FIG. 2). In this case, the iron core 10 is fixed to the lower frame 302 via the lower support plates 43 and 44. The lower support plates 43, 44 are the inner side surface of the inner iron core portion 101 (the lower inner surface that defines the opening 103) and are in the state of being in surface contact with the inner surface (upper surface) of the lower iron portion 15. It is fixed to the frame 302 (see FIG. 1). As shown in FIG. 2, the iron core 10 whose opening operation has been completed is in a state in which the inner iron core portion 101 and the outer iron core portion 102 extend upward on the lower frame 302.

  The winding 20 is attached to the iron core 10 so that the iron core 10 (the inner iron core portion 101 and the outer iron core portion 102) thus opened is inserted into the winding wire 20 (iron core insertion step). In this iron core insertion step, the iron core 10 (the inner iron core portion 101 and the outer iron core portion 102) is inserted into the through-hole 203 inside the inner winding 201 constituting the winding 20. Thereby, as shown in FIG. 3, the winding 20 is arranged at a predetermined position on the lower frame 302. At this time, the iron core 10 protrudes upward from the through hole 203 of the winding 20.

  And the upper side support plates 41 and 42 are arrange | positioned so that it may be located between the iron cores 10 which protrude upwards rather than the coil | winding 20 (refer FIG. 4). The upper support plates 41 and 42 are placed on the upper end surface of the winding 20 via a spacer member (not shown). By mounting on the winding 20 in this manner, the upper support plates 41 and 42 are disposed in the opening 103 of the iron core 10.

  In a state where the upper support plates 41 and 42 are disposed on the winding 20, as shown in FIG. 4, the inner core portion 101 and the outer core portion 102 disposed outside do not interfere with the closing operation. The outer side of the transformer 1 is bent.

  Next, a closing step is performed in which both ends of the amorphous alloy ribbon constituting the inner core portion 101 and the outer core portion 102 are joined and closed. In the closing step, first, the inner iron core portion 101 is closed, and then the outer iron core portion 102 is closed. Closing of the inner core portion 101 is such that the amorphous alloy ribbon constituting the inner core portion 101 bent outward is bent inward, and the amorphous alloy ribbon constituting the inner core portion 101 disposed in the center is bent outward. It is done. And it joins in the state which accumulated and wrapped the both ends of the amorphous alloy ribbon which comprises the inner iron core part 101. FIG. Note that the closing of the inner iron core portion 101 may be an overlap method or another method such as a step wrap method. When the overlap method is applied, joining may be performed in the same manner as closing of the outer iron core portion 102 described later.

  After the inner core portion 101 is closed, the inter-core plate 104 is placed on the upper outer peripheral surface of each of the two inner core portions 101 as shown in FIG. The inter-core plate 104 is formed in a rectangular shape having a lateral dimension that does not protrude from the side of the inner core part 101 and a longitudinal dimension that extends so as to be placed across the two inner core parts 101. Is done. Adhesive tape T1 is attached as a fixing member to both ends in the longitudinal direction of the inter-core plate 104, and relative displacement between the inter-core plate 104 and the inner iron core portion 101 is regulated by the adhesive tape T1. The pressure-sensitive adhesive tape T1 is configured by laminating a pressure-sensitive adhesive layer on one surface of a base sheet made of a synthetic resin such as polyester. Adhesive tape T1 is stuck over the upper surface of the longitudinal direction both ends side of the plate 104 between cores, and the upper outer peripheral surface area | region of the inner core part 101 adjacent to the said both ends. As a result, the inter-core plate 104 is fixed on the inner iron core 101 and the inter-core plate 104 is fixed.

  After fixing the inter-core plate 104, the outer iron core portion 102 is closed. Closing of the outer iron core portion 102 is performed by folding the amorphous alloy ribbon forming the outer iron core portion 102 bent outward and wrapping both ends of the amorphous alloy ribbon in an overlapping manner. Joined in state.

  More specifically, a plurality of unit laminated bodies U (see FIG. 6A) in which a plurality of (for example, several hundred) amorphous alloy ribbons are stacked are formed before the closing, and the plurality The unit laminated body U of the set is laminated. As shown in FIG. 6A, both ends of the unit laminate body U are joined sequentially from the inner side of the outer core part 102 to the outer side (from the bottom to the top of FIG. 6A) in the formation portion of the upper iron part 14. . In such joining, both end portions of all the unit laminate bodies U are overlapped with each other, and the overlapped region is formed as an overlap region Ua.

  FIG. 6A is a schematic diagram showing a part of a state in which the unit laminate body U of the outer iron core portion 102 is laminated and joined. For ease of illustration, the unit laminate body U is arranged in the stacking direction for convenience. Are alternately shown with a lattice pattern and white. In FIG. 6A, the unit laminated bodies U adjacent to each other in the stacking direction are illustrated with a gap, but in actuality, they are stacked in close contact. Here, the lamination direction of the amorphous alloy ribbon and the unit laminate body U is the same, and the vertical direction in FIG. 6A is the lamination direction.

  In each unit laminate body U, the other end Uc is placed on the upper side in FIG. 6A on one end Ub side in the extending direction by forming the overlap region Ua, the other end Uc is placed on the outside, and the other end Ub is placed on the inside. And the adhesive tape T2 is stuck as a fixing member across the other end Uc of the unit laminated body U, and the relative displacement of the unit laminated bodies U in the overlap region Ua is regulated by the adhesive tape T2. The adhesive tape T2 is configured in the same manner as the above-mentioned adhesive tape T1, and one or a plurality of adhesive tapes are attached to one other end Uc (see FIG. 6B, two adhesive tapes T2 in FIG. 6B). The adhesive tape T2 is disposed across the overlap region Ua and the upper surface of the unit laminate body U adjacent to the right side in FIG. 6A of the overlap region Ua. Therefore, the adhesive tape T2 is provided so as to be laminated in both the overlap region Ua and the vicinity thereof, in other words, a part of the adhesive tape T2 is disposed so as to overlap the overlap region Ua in the lamination direction. By sticking the adhesive tape T2 in this way, the two unit laminate bodies U are joined in a state where both end portions are overlapped, and displacement in the opening direction of the joined portion including the overlap region Ua is regulated. .

  After joining one unit laminated body U with adhesive tape T2, the next unit laminated body U is wound around the outer side. The one end Ub side of the next unit laminated body U is disposed in the vicinity of the right side in FIG. 6A or adjacent to the other end Uc of the unit laminated body U joined before that. At this time, the one end Ub side of the next unit laminated body U is arrange | positioned so that it may laminate | stack on the adhesive tape T2 used for the unit laminated body U before that. Thereafter, both end portions of the next unit laminate body U are overlapped to form an overlap region Ua, and in the same manner as described above, the adhesive tape T2 is applied across the other end Uc, and both end portions of the unit laminate body U are Be joined.

  By repeating the winding and joining of all the unit laminate bodies U as described above, the closing of the outer iron core portion 102 is completed. The overlap regions Ua of the unit stacked bodies U adjacent in the stacking direction are arranged side by side in a stepped manner. That is, the plurality of overlap regions Ua in the outer iron core portion 102 are arranged so as to be shifted from the positions aligned in the stacking direction (vertical direction in FIG. 6A). In the single outer iron core portion 102, the overlap region Ua may be arranged in a single step or a plurality of portions. When there are a plurality of overlap regions Ua, the overlap regions Ua may be arranged in the stacking direction according to the number of portions where the overlap regions Ua are arranged stepwise. The plurality of overlap regions Ua are preferably arranged at positions shifted from the positions in which the overlap regions Ua are arranged in the stacking direction, thereby avoiding the overlap region Ua from being bulky in the stacking direction. Can do.

  Through the above-described closing process, the iron core 10 returns to the state before opening as shown in FIG. In addition, the closing operation | work of this iron core 10 may be called the joining operation | work or rejoining operation | work of the iron core 10. After completing the closing process, the upper frame 301 is disposed on the iron core 10. The upper frame 301 is disposed so as to accommodate the upper end portion of the iron core 10 exposed from the winding 20 (see FIG. 1). In this case, the upper frame 301 is disposed on a spacer member (not shown). This spacer member is placed on the upper end surface of the winding 20.

  After the upper frame 301 is disposed, the upper support plates 41 and 42 placed on the upper end surface of the winding 20 are fixed to the upper frame 301. In this case, the upper support plates 41 and 42 are fixed to the upper frame 301 while supporting the iron core 10 from the inside. More specifically, it is fixed to the upper frame 301 in a state where it is in surface contact with and supported by the upper inner surface that defines the opening 103 of the iron core 10 (see FIG. 1). Through the series of steps as described above, the transformer 1 according to the present embodiment is completed.

  As described above, in the above embodiment, since the inter-core plate 104 is fixed so as not to move by the adhesive tape T1, the inter-core plate 104, the inner iron core portion 101, and the like due to the external force due to transportation of the transformer 1 or an earthquake. Can be prevented from relative displacement. Thereby, the deformation | transformation and damage of the iron core 10 by this relative displacement can be prevented.

  Moreover, in the said embodiment, the adhesive tape T2 is stuck so that the overlap area | region Ua may not be displaced in the opening direction in the unit laminated body U of the outer side iron core part 102. FIG. Thereby, even if the external force by transportation of the transformer 1 or an earthquake acts, the deformation | transformation and damage of the outer core part 102 can be prevented. In particular, the outer core portion 102 has a large width in the left-right direction in FIG. 1 and is laminated with an amorphous alloy ribbon that has a very smooth surface and hardly generates friction. However, deformation due to external force can be effectively prevented by sticking the adhesive tape T2.

  Since the deformation of the iron core 10 can be prevented with the adhesive tapes T1 and T2 in this way, the appearance of the iron core 10 can be prevented from being damaged, and the work load for restoring the deformation of the iron core 10 can be reduced. . Moreover, it can suppress that the magnetic characteristic of the iron core 10 falls, and it becomes possible to exhibit prescribed | regulated performance favorably as the transformer 1. FIG.

  In addition, this invention is not limited to the said embodiment, It can implement variously. In the above-described embodiment, the size, shape, and the like illustrated in the accompanying drawings are not limited thereto, and can be appropriately changed within a range in which the effect of the present invention is exhibited. In addition, various modifications can be made without departing from the scope of the object of the present invention.

  In the above-described embodiment, the adhesive tapes T1 and T2 are used as the fixing members, but various modifications are possible as long as the relative displacement of the inter-core plate 104 and the unit laminate body U can be regulated.

  For example, an adhesive or double-sided tape (hereinafter referred to as “adhesive” or the like) may be used as the fixing member. In this case, an adhesive or the like is provided between the core plate 104 and the outer peripheral surface of the inner iron core 101. An adhesive or the like may be provided between the relative surfaces of both end portions of the unit laminate body U that are provided or overlapped in the overlap region Ua. Further, in addition to the overlap region Ua, or when an adhesive or the like is provided in the vicinity of the overlap region Ua separately from the overlap region Ua, the unit laminate bodies U adjacent in the stacking direction by the adhesive or the like They can be bonded and their relative displacement can be regulated.

  Further, the fixing member may be a tape or a sheet having no adhesiveness (hereinafter referred to as “tape or the like”) instead of the adhesive tapes T1 and T2 or an adhesive. In this case, the tape or the like seems to have a surface with a higher friction coefficient than the contact object (the outer peripheral surface of the inner iron core portion 101, the inter-core plate 104, the amorphous alloy ribbon of the unit laminate body U) with which the tape or the like comes into contact. To. By disposing such a tape or the like at a position where the adhesive tapes T1 and T2 or the above-described adhesive or the like are provided, it is possible to regulate the relative displacement of the inter-core plate 104 so as to slide relative to the inner iron core portion 101. It is possible to prevent the unit laminated body U from being deformed so that the relative position of the unit laminated body U is shifted.

  In addition, when it is made to have a surface with a high coefficient of friction compared with the contact target object which the base material sheet of adhesive tape T1 and T2 contacts, contact objects, such as unit laminated body U, also in the surface on the opposite side to an adhesive layer The relative displacement of the object can be regulated.

  Further, the iron core 10 provided with the adhesive tape T2 and the fixing member in the overlap region Ua may be wound without distinguishing the inner iron core portion 101 and the outer iron core portion 102 to be a wound iron core having a single opening.

  Further, the number of the inter-core plates 104 is not limited to one of the iron cores 10, and a plurality of sheets may be provided side by side in the width direction of the amorphous alloy ribbon.

  Further, as another embodiment of the present invention, the above embodiment or the above modification may be combined in whole or in part.

  In the present embodiment, the configuration in which the present invention is applied to a transformer has been described. However, as long as the above-described effects can be obtained, the present invention can be applied to other power stationary devices and power conversion devices. is there.

  According to the transformer of the present invention, there is an effect that it is possible to prevent the wound iron core from being deformed, and it can be suitably used for a transformer including a wound iron core wound with an amorphous alloy ribbon.

DESCRIPTION OF SYMBOLS 1 Transformer 10 Iron core 101 Inner iron core part 102 Outer iron core part 103, 103a, 103b Opening part 104 Core-to-core plates 11-13 Leg part 14 Upper iron part 15 Lower iron part 20 Winding T1, T2 Adhesive tape (fixing member )
U unit laminate body Ua overlap region

Claims (12)

A transformer comprising a wound iron core in which an opening is formed by winding an amorphous alloy ribbon in an overlapping manner, and a winding inserted into the wound iron core,
The wound core has a plurality of unit laminates each of which is laminated with a plurality of amorphous alloy ribbons by the overlap method, and both end portions of the plurality of unit laminates are overlapped to form an overlap region. And
A transformer for fixing a relative displacement of the plurality of unit laminated bodies in the overlap region is laminated on at least one of the overlap region and the vicinity thereof.   The transformer according to claim 1, wherein at least a part of the fixing member overlaps the overlap region in the stacking direction.   The transformer according to claim 1 or 2, wherein the fixing member is disposed across the overlap region and the adjacent region.   The transformer according to any one of claims 1 to 3, wherein the fixing member is disposed between relative surfaces of both end portions of the unit laminated body to be overlaid.   5. The transformer according to claim 1, wherein at least one of the overlap regions in the wound iron core is disposed at a position shifted from a position at which at least one of the overlap areas is aligned in the stacking direction. A transformer comprising a wound iron core in which an opening is formed by winding an amorphous alloy ribbon, and a winding inserted in the wound iron core,
The wound iron core includes an inner iron core portion that forms the opening, an outer iron core portion disposed on the outer peripheral side thereof, and a plurality of leg portions extending in the vertical direction, and upper end portions of the plurality of leg portions. It is formed into a shape that includes an upper iron part that connects between the lower iron part and a lower iron part that connects between the lower ends,
An inter-core plate is further provided between the inner iron core portion and the outer iron core portion in the upper iron portion, and a fixing member for restricting relative displacement between the inter-core plate and the inner iron core portion is provided. A transformer characterized by   The transformer according to claim 6, wherein the fixing member is disposed across the inter-core plate and the inner iron core portion adjacent to the inter-core plate.   The transformer according to claim 6 or 7, wherein the fixing member is disposed between the inter-core plate and an outer peripheral surface of the inner core portion. The wound iron core is formed by winding an amorphous alloy ribbon in an overlapping manner,
The outer iron core is wound with a plurality of unit laminates in which a plurality of amorphous alloy ribbons are laminated by the overlap method, and both end portions of the plurality of unit laminates are overlapped to form an overlap region. Formed,
The fixing member for restricting the relative displacement of the plurality of unit laminated bodies in the overlap region is stacked on at least one of the overlap region and its vicinity. The transformer according to any one of Item 8.   The transformer according to any one of claims 1 to 9, wherein the fixing member is an adhesive tape.   The transformer according to any one of claims 1 to 10, wherein the fixing member is an adhesive. The transformer according to any one of claims 1 to 11, wherein the fixing member has a surface having a higher coefficient of friction than a contact object with which the fixing member contacts.

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