JP2017157789A - Stationary induction machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a stationary induction machine in which noise due to magnetostriction is reduced, by suppressing large magnetostrictive vibration generated in the linear part of a wound core.SOLUTION: In a wound core 1 molded in substantially rectangular shape having arcuate corners, means for supporting the load of the wound core while applying a stress 6a in the horizontal outside direction is provided, at inner peripheral arcuate parts 1a on the upper opposite sides of the wound core 1, so that the resultant force with reaction 5a to the load of the core is directed in the radial direction 7a of the arcuate parts. Furthermore, means for supporting the load of the wound core while applying a stress 6b in the horizontal inside direction is provided, at outer peripheral arcuate parts 1b on the lower opposite sides of the wound core 1, so that the resultant force with reaction 5b to the load of the core is directed in the radial direction 7b of the arcuate parts.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an annular wound core used for static induction appliances such as transformers and reactors, which is formed by cutting, laminating and laminating a thin strip-shaped magnetic material, forming a substantially U shape, and closing one end by a lap joint technique or the like. In particular, the present invention relates to a technique for reducing excitation noise of the wound core.

  Low-loss magnetic materials such as ultra-thin magnetic steel sheets, amorphous alloys, and nanocrystalline alloys have a strip shape with a thickness of approximately 100 μm or less in order to suppress loss due to eddy current flowing in the material. Static induction devices such as transformers, reactors, etc., are cut into a specified length and stacked into a U-shape with one end opened by stacking multiple sheets, and single-phase or multi-phase windings from the open part Is inserted to close the open portion, and is formed of a substantially circular or substantially rectangular wound core having a joint such as a butt joint or a lap joint. The wound iron core is held in a posture in which the straight portion (magnetic leg portion) provided with the winding is oriented in the vertical direction and the straight portion (yoke portion) not provided with the winding is oriented in the horizontal direction. It is generally used as

  The above-described wound iron core is characterized in that the ribbon-shaped magnetic materials are not bonded and fixed to prevent an increase in magnetic loss. For this reason, the wound core alone cannot maintain its shape, and it is common to make it self-supporting by some support means and to function as a static induction iron core. For example, in Patent Document 1, a rectangular mold is applied to the inner periphery of a yoke portion of a substantially circular wound core, and a U-shaped molded holding metal fitting is applied to the outer periphery. A technique relating to the shape and manufacturing method of a metal fitting that can be molded into a rectangular shape and that can maintain its shape smoothly and satisfactorily is disclosed.

  Further, when an AC voltage is applied to the winding of the static induction electric machine, an AC magnetic flux is generated in the wound iron core, and the magnetic material constituting the wound iron core expands and contracts due to a magnetostriction phenomenon. Since the wound iron core vibrates due to the expansion and contraction and becomes a noise source, many techniques for reducing this noise have been disclosed. For example, Patent Document 2 discloses a technique for stably maintaining the magnetic properties of an iron core by winding a thin plate-like outer frame around the outer periphery of the wound iron core and controlling the tightening pressure of the outer frame to an appropriate value. Has been.

JP 2001-76951 A JP-A-4-206610

  All of the prior art methods for holding a wound core formed into a rectangular shape with arc-shaped corners support the load of the wound core in the vertical direction, and are generated at straight portions such as magnetic leg portions and yoke portions. The vibration speed (proportional to the noise value) due to magnetostriction is not suppressed, and there is a problem that it is difficult to obtain a sufficient noise reduction effect.

  An object of the present invention is to provide a static induction electric appliance that suppresses large magnetostrictive vibration generated in a straight portion of a wound iron core and reduces noise caused by magnetostriction.

In order to solve the above problems, the configuration described in the claims is adopted.
The present application includes a plurality of means for solving the above-mentioned problems. To give an example, a large number of ribbon-like magnetic materials are stacked and their open ends are joined together to form a substantially rectangular shape having arc-shaped corners. A static induction electric machine comprising a molded wound iron core and a winding inserted into the wound iron core, while applying stress in a substantially horizontal outer direction provided at inner circular arc portions on both sides of the upper part of the wound iron core Means for supporting the load of the wound iron core, and means for supporting the load of the wound iron core while applying stress in a substantially horizontal inner direction provided on the outer peripheral arcs on both sides of the lower part of the wound iron core. .

  In the static induction electric machine according to the present invention, the means for supporting the load of the wound iron core while applying stress in the substantially horizontal outer direction provided on the inner circumferential arc portions on both sides of the upper portion of the wound iron core, It is preferable to comprise a rod-shaped member having substantially the same radius of curvature and a member that applies stress to the rod-shaped member in a substantially horizontal outer direction.

  Further, in the static induction appliance of the present invention, the means for supporting the load of the wound core while applying stress in the substantially horizontal inner direction provided on the outer peripheral arc portions on both sides of the lower portion of the wound core is provided at the lower portion of the wound core. It is preferable to comprise a receiving metal fitting having substantially the same radius of curvature as the outer circumferential arc portion and a member that applies stress to the receiving metal fitting in a substantially horizontal inner direction.

  With the configuration of the present invention, the load of the wound induction core having a circular arc corner is not supported in the vertical direction by the linear portion such as the magnetic leg portion and the yoke portion, but the magnetostrictive vibration of the wound core is reduced. It is possible to support in the radial direction of the corners by arc-shaped corners in which the directions are dispersed. As a result, it is possible to suppress large magnetostrictive vibration generated at the straight portion of the wound iron core, and noise due to magnetostriction is reduced as compared with the conventional method of supporting a wound iron core. Further, by controlling the magnitude of each stress applied to the support member at the time of manufacturing, it is possible to easily suppress the manufacturing variation of the wound core noise compared to the prior art.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. The longitudinal section of the single phase static induction machine which shows the 2nd example of the present invention. The longitudinal section of the single phase static induction machine which shows the 3rd example of the present invention. The longitudinal cross-sectional view of the single phase static induction machine which shows the 4th Example of this invention. The longitudinal cross-sectional view of the single phase static induction appliance which shows the 5th Example of this invention. The longitudinal cross-sectional view of the three-phase static induction appliance which shows the 6th Example of this invention. The longitudinal cross-sectional view of the three-phase static induction appliance which shows the 7th Example of this invention. The figure which shows the calculation result of the magnetostriction force distribution of a single phase amorphous winding iron core by three-dimensional magnetic field analysis. The figure which shows the deformation amount by the magnetostriction vibration of the single phase amorphous winding iron core by the conventional support method by three-dimensional structural analysis. The figure which shows the deformation | transformation amount by the magnetostriction vibration of the single phase amorphous winding iron core by the support method of this invention by three-dimensional structural analysis.

  Hereinafter, a plurality of embodiments of the present invention will be described in detail with reference to the drawings. In the drawings for explaining the embodiments, the same components are denoted by the same names and symbols, and the repeated explanation thereof is omitted.

  FIG. 1 is a longitudinal sectional view of a single-phase static induction electric machine showing a first embodiment of the present invention. In addition, a present Example demonstrates the minimum structure required in order to acquire the effect of this invention, and its basic effect | action. A specific configuration for causing this action to be manifested in an actual static induction appliance will be exemplified in the second and subsequent embodiments.

  A stationary unit in which two sets of windings 2 are provided on a straight line portion (magnetic leg portion) in the vertical direction of a substantially rectangular single-phase wound core 1 formed by stacking a large number of thin ribbon magnetic materials having arc-shaped corners. In the induction machine, the reaction 5a of the load on the iron core is applied vertically upward to the inner circumferential arc portions 1a on both upper sides of the wound iron core 1. At this time, if the inner circumferential arc portion 1a is provided with means for applying the stress 6a in the horizontal outward direction, the reaction direction of the load on the upper portion of the wound core 1 becomes the resultant force 7a of the reaction 5a of the load and the stress 6a, This is the radial direction of the arc portion at the top of the wound core 1. A reaction 5b of the load of the wound core 1 acts vertically upward on the outer peripheral arc portion 1b on both lower sides of the wound core 1. At this time, if means for applying the stress 6b to the outer circumferential arc portion 1b in the horizontal inner direction is provided, the reaction direction of the load below the wound core 1 becomes the resultant force 7b of the reaction 5b of the load and the stress 6b. 1 is the radial direction of the arc portion of the lower part of 1.

  Next, the effect of reducing noise caused by the magnetostriction of the wound iron core obtained by the configuration of the present invention will be described using calculation results by three-dimensional magnetic field analysis and three-dimensional structure analysis.

  FIG. 8 shows the maximum value of the stress (magnetostrictive force) on the surface of the iron core generated by the magnetostrictive properties of the magnetic material when a single-phase wound iron core made of a ribbon-like magnetic material is excited at 50 Hz (winding is not shown). It is the result of having calculated distribution of this by three-dimensional magnetic field analysis. The longer the arrow and the higher the concentration, the larger the magnetostrictive force amplitude. The magnetic material assumed in this analysis is a 2605HB1M amorphous ribbon manufactured by Hitachi Metals, Ltd. with a thickness of 25 μm. The dimensions, excitation conditions, mechanical characteristics, and magnetostriction characteristics of the wound core are as shown in Table 1. .

  The magnetostrictive force generated on the surface of the wound iron core is large in the linear part such as the magnetic leg part and the yoke part, whereas the direction in which the magnetostrictive force acts is dispersed in the arc part. Or less.

  FIG. 9 and FIG. 10 show the results obtained by three-dimensional structural analysis of the amount of deformation accompanying the excitation vibration of the wound core due to the magnetostrictive force obtained by three-dimensional magnetic field analysis. The fundamental frequency of vibration due to magnetostrictive force is 100 Hz, which is twice the excitation frequency of the wound core 50 Hz, and each figure shows two states in which the amount of deformation is the maximum and the phase is 180 degrees different. . In addition, the amount of deformation of the wound core shown in these drawings is drawn with an emphasis of 100,000 times the actual size.

  In this calculation, the location of the constraining surface 50 of the wound core 1 is different between FIG. 9 and FIG. That is, FIG. 9 simulates the support state of the conventional wound core, and constrains the inner peripheral surface of the upper yoke and the outer peripheral surface of the lower yoke. This form simulates a state in which the load of the wound core is supported in the vertical direction. On the other hand, FIG. 10 simulates the support state of the wound core according to the present embodiment, and constrains the inner circumferential surface of the arc part on both sides of the upper part and the outer circumferential surface of the arc part on both sides of the lower part. This form simulates a state in which horizontal stress is applied to the arc part of the wound iron core and the resultant is supported so that the resultant force with the load is directed in the radial direction of the arc part.

  The vibration mode in which the magnetic leg portion opens and closes in the horizontal direction becomes dominant with the magnetostrictive force that vibrates at 100 Hz acting on the substantially rectangular wound iron core having the arc-shaped corner portion. According to this analysis, in the conventional support method shown in FIG. 9, the maximum displacement of the magnetic leg portion is about 0.65 μm, whereas in the support method simulating this embodiment shown in FIG. The maximum displacement of the magnetic leg portion is about 0.1 μm, which is reduced to 1/6 or less of the conventional example. Since the supporting method simulating the present embodiment restrains the arc portion of the iron core in which the direction in which the magnetostrictive force acts is dispersed, the vibration amplitude is suppressed. Accordingly, according to this analysis, the sound pressure level generated on the iron core surface is reduced by about 10 dB from the conventional example, and a sufficient noise reduction effect can be obtained by this example.

  The static induction machine of this embodiment is provided with inner circumferential arc portions on both sides of the upper part of the wound core, a means for supporting the load of the wound core while applying stress in a substantially horizontal outer direction, and outer circumferences on both sides of the lower part of the wound core. And a means for supporting the load of the wound iron core while applying stress in a substantially horizontal inner direction provided in the arc portion. And the resultant force of the reaction of the substantially horizontal stress applied to the inner peripheral arc part on both sides of the upper part of the wound core and the outer peripheral arc part on both sides of the lower part and the load acting on the vertical direction of the wound core is the arc part of the wound core. It faces the radial direction.

  According to the present embodiment, the load of the wound induction core having the arcuate corner is loaded into the arcuate corner where the direction of the magnetostrictive vibration of the wound core is dispersed, and the radial direction of the corner Therefore, it is possible to suppress a large magnetostrictive vibration generated in the straight portion of the wound iron core and to reduce noise caused by the magnetostriction.

  FIG. 2 is a longitudinal sectional view of a single-phase static induction electric machine showing a second embodiment of the present invention. In order to obtain the effect of the present invention described in the first embodiment, in this embodiment, two sets of rod-shaped members 3 having substantially the same radius of curvature r as the circular arc portion are formed on the inner peripheral circular arc portion 1a on both upper sides of the wound core 1. Abut. Then, the binding material 31 is applied to the rod-shaped member 3, and the binding material 31 is further applied to the arc portion of the upper portion of the wound iron core 1 to apply the clamping pressure 6a, thereby applying a stress in the substantially horizontal outer direction. The load 5a of the wound core 1 applied to the rod-shaped member 3 is applied to a structure other than the wound core such as the winding 2, and the structure is supported by a support member (not shown). In FIG. 2, as an example, it is shown that a reaction 5c that combines the load and the load of the winding itself is applied to the lower end of the winding 2, and the reaction 5c is a support member (not shown) that supports the winding. Supported by. With this configuration, the reaction direction of the load on the upper portion of the wound core 1 is the resultant force 7a of the load 5a of the wound core and the tightening pressure 6a, and the radial direction of the arc portion on the upper portion of the wound core 1. In order to avoid the formation of a current path surrounding the wound core 1, at least one of the rod-shaped member 3 and the binding material 31 is made of an insulating material.

  Next, two sets of receiving metal fittings 4 having substantially the same radius of curvature as the arc portion are applied to the outer peripheral arc portions on both sides of the lower part of the wound core 1. The second metal fitting 10 is applied to the side surface of the receiving metal fitting 4, and the fastening pressure 6b is applied by fixing the metal fitting to the bottom surface while applying pressure inward to each other. Since the reaction 5b of the load of the wound iron core 1 acts vertically upward on the metal fitting 4, the direction of the load acting on the arc portion at the bottom of the wound iron core 1 is the resultant force of the load reaction 5b and the tightening pressure 6b. 7b, which is the radial direction. In FIG. 2, the second metal fitting 10 that contacts the side surface of the metal fitting 4 is provided. However, if the metal fitting 4 has high rigidity, the second metal fitting 10 may not be provided.

  The winding core of this embodiment is attached by putting two rod-like members in the inner circular arcs on both sides of the upper part of the substantially rectangular winding core formed by stacking a large number of thin ribbon-like magnetic materials in a substantially horizontal outer direction. Apply the core load to the winding while applying stress. Then, an arc-shaped receiving metal fitting is applied to the outer peripheral arc portions on both sides of the lower part of the wound iron core to apply a load on the iron core while applying stress in a substantially horizontal inner direction. By applying a load to the arc portion where the direction of the magnetostrictive force of the iron core is dispersed, excitation noise caused by magnetostriction is reduced.

  According to the present embodiment, the rod-shaped member is brought into contact with the inner circular arc portions on both sides of the upper portion of the wound iron core, and the binding pressure is applied by applying the binding material to the arc-shaped portion of the rod-shaped member and the wound iron core. Large magnetostrictive vibration generated in the straight portion of the iron core can be suppressed, noise caused by magnetostriction can be reduced, and the tightening pressure can be adjusted by the binding material. In addition, since two sets of receiving metal fittings 4 are applied to the outer peripheral arcs on both sides of the lower part of the wound core and fixed to the bottom surface while applying pressure inward to each other, tightening pressure is applied. The large magnetostrictive vibration generated at the straight portion of the wound iron core can be suppressed, and noise caused by magnetostriction can be reduced.

  FIG. 3 is a longitudinal sectional view of a single-phase static induction electric machine showing a third embodiment of the present invention. Since the structure of the upper part of the wound iron core 1 in the present embodiment is the same as that in the second embodiment, description of the operation thereof is omitted.

  In this embodiment, two sets of rod-shaped members 3a having substantially the same radius of curvature r as the arc portions are brought into contact with the inner circumferential arc portions on both sides of the lower part of the wound core 1. Then, two sets of receiving metal fittings 4 having substantially the same radius of curvature as the circular arc parts are provided on the outer peripheral arc parts on both sides of the lower part of the wound iron core 1, and the binding material 31 is further interposed between the receiving metal fitting 4 and the rod-shaped member 3a. And a tightening pressure is applied, and a stress 6b is applied in the inner direction.

  According to the present embodiment, the rod-shaped member is brought into contact with the inner circumferential arc portion on both lower sides of the wound core, the receiving metal fitting is provided on the outer circumferential arc portion on both lower sides of the wound iron core, and the binding is performed between the receiving bracket and the rod-shaped member. Because the clamping pressure is applied by applying the material, the clamping pressure can be adjusted by the binding material, and the large magnetostrictive vibration generated in the straight part of the wound core can be optimally suppressed, resulting in magnetostriction. Noise can be reduced.

  FIG. 4 is a longitudinal sectional view of a single-phase static induction electric machine showing a fourth embodiment of the present invention. Since the structure of the lower part of the wound core 1 in the present embodiment is the same as that in the third embodiment, description of the operation thereof is omitted.

  In this embodiment, two sets of binding materials 31, 31 a are respectively applied to the rod-shaped members 3 applied to the inner circumferential arcs on both sides of the upper part of the wound core 1, and the binding materials 31, 31 a are further attached to both upper sides of the wound core 1. Tightening pressures 6a and 6c are applied to the receiving metal fitting 4 applied to the outer peripheral arc portion. The tightening pressure 6a is applied in the substantially horizontal outward direction, and the tightening pressure 6c is applied in the substantially vertical upward direction. In FIG. 1, the resultant force 7a of the load reaction 5a of the wound core and the stress 6a is suitably about 45 degrees with respect to the horizontal direction. By controlling the tightening pressure 6c of the binding material 31a, the direction of the resultant force with the reaction of the load of the wound core 1 applied to the rod-shaped member 3 is uniform in the radial direction of the arc portion on the upper portion of the wound core 1 and It can be controlled accurately. As in the second and third embodiments, in this embodiment, the load of the wound core 1 applied to the rod-shaped member 3 applied to the inner peripheral arc portion of the upper portion of the wound core 1 is the wound core such as the winding 2. The structure is configured to be supported by a support member (not shown).

  According to this embodiment, two sets of binding materials are applied to the rod-shaped members applied to the inner circumferential arcs on both sides of the upper part of the wound iron core so that the tightening pressure of the binding materials can be controlled to different magnitudes. In addition to the function and effect of Example 1, the direction of the resultant force with the reaction of the load of the wound core can be controlled uniformly and accurately in the radial direction of the arc portion of the upper part of the wound core. Noise manufacturing variations can be easily suppressed.

  FIG. 5 is a longitudinal sectional view of a single-phase static induction electric machine showing a fifth embodiment of the present invention. Conventionally, a rectangular metal fitting has been provided on the inner peripheral portion of the wound iron core. However, the rectangular metal fitting is improved to obtain the operational effects of the present invention.

  In this embodiment, the corners on both sides of the upper part of the rectangular metal fitting 32 provided on the inner peripheral portion of the wound core 1 are processed into a shape 32a that protrudes in an arc shape by bending or overlaying. Are brought into contact with the inner circumferential arcs on both sides of the upper part of the wound core 1. Here, the radius of curvature of the arcuate protruding portion 32a is substantially the same as the radius of curvature of the inner circumferential arc portion of the wound core. Further, the binding material 31 is applied to the outer periphery of the rectangular metal fitting 32 and the wound iron core 1, and a tightening pressure 6a is applied in a substantially horizontal outer direction.

  Also in the lower part of the wound iron core 1, the binding material 31 may be applied between the receiving metal fitting 4 using the rectangular metal fitting 32, and the tightening pressure 6 b may be applied in the substantially horizontal inner direction.

  According to the present embodiment, since the conventionally used rectangular metal fittings are improved, the present invention can be implemented with a slight modification of the conventional product in addition to the effects of the first embodiment.

  FIG. 6 is a longitudinal sectional view of a three-phase static induction electric machine showing a sixth embodiment of the present invention. Each of Examples 1 to 5 is a configuration example of the present invention for a single-phase wound core, but the present invention can be easily applied to a three-phase wound core.

  In the present embodiment, a three-phase static induction electric machine comprising three windings on a three-phase tripod-type wound core wound with one outer wound core 41 on the outside of two adjacent inner wound cores 40 is provided. Illustrated. In the same manner as in the first embodiment, the inner circumferential arc 1a on both sides of the upper part of the inner wound core 40, and the lower outer sides of the outer wound core 41 and the outer circumferential arc 1b of the lower center magnetic leg of the inner wound core 40 are respectively horizontally outward. By providing means for applying the stress 6a and the stress 6b in the horizontal inner direction, the resultant force with the reaction of the load of the wound cores 40 and 41 can be made the radial direction of the arc part of the wound core. The effect is obtained. As specific means for applying the stress 6a and the stress 6b, for example, any configuration described in the second to fifth embodiments may be used.

  According to the present embodiment, in a static induction machine having a three-phase tripod configuration, the load of the wound induction core having an arcuate corner is applied to the arcuate corner where the direction of magnetostriction vibration of the wound iron is dispersed. Therefore, the large magnetostriction vibration generated in the straight portion of the wound iron core can be suppressed, and noise caused by magnetostriction can be reduced.

  FIG. 7 is a longitudinal sectional view of a three-phase static induction electric machine showing a seventh embodiment of the present invention. In FIG. 6, a wound iron core having a three-phase tripod configuration has been described. However, four wound iron cores are arranged in parallel, and three-phase five wires are wound around three positions where the magnetic leg portions of the wound iron cores are adjacent to each other. The present invention can also be applied to a wound core with a leg structure.

  In the present embodiment, a three-phase static induction electric machine constituted by three windings cores 45 adjacent to each other and three windings 2 at two adjacent winding cores is shown. Yes. In the same manner as in the first embodiment, the inner circumferential arc portion 1a on both sides of the upper portion of the wound core 45 and the outer circumferential arc portion 1b on both sides of the lower portion of the wound core 45 are respectively subjected to horizontal outer stress 6a and horizontal inner stress 6b. By providing such means, the resultant force with the reaction of the load of the wound core 45 can be made the radial direction of the arc part of the wound core, and the effect of the present invention can be obtained. As specific means for applying the stress 6a and the stress 6b, for example, any configuration described in the second to fifth embodiments may be used.

  According to the present embodiment, in a three-phase five-leg stationary induction machine, the load of the wound induction core having an arcuate corner is applied to the arcuate shape in which the direction of magnetostrictive vibration of the wound core is dispersed. Since the corner portion is supported in the radial direction of the corner portion, large magnetostrictive vibration generated in the straight portion of the wound iron core can be suppressed, and noise caused by magnetostriction can be reduced.

  Each embodiment described above does not limit the configuration of the present invention, and the stress applying means provided at the upper and lower portions of the wound core may be any combination described in different embodiments. The stress applying means is not limited to the use of the binding materials 31 and 31a, and stress may be applied using, for example, a ratchet structure, a turnbuckle structure or the like that can realize the same function.

1: Winding core 1a: Inner circular arc part 1b at the upper part of the wound iron core: Outer circular arc part at the lower part of the wound core 2: Winding 3: Upper bar member 3a: Lower bar member 4: Receiving brackets 5a, 5b, 5c: Reaction of load Direction 6a, 6b, 6c: direction 7a, 7b of applied stress: direction of resultant force of reaction of load and applied stress 10: second fitting 31, 31a: binding material 32: rectangular fitting 32a: arc-shaped protruding portion 40 : Inner wound core 41: Outer wound core 45: Three-phase five-legged wound core 50: Restraint surface

Claims (15)

A static induction electric machine comprising a wound iron core formed by stacking a large number of ribbon-like magnetic materials and having open ends joined to each other and having a substantially rectangular shape with arcuate corners, and a winding inserted in the wound iron core. There,
A means for supporting the load of the wound core while applying stress in a substantially horizontal outer direction, provided on inner circular arc portions on both upper sides of the wound core;
Means for supporting the load of the wound core while applying stress in a substantially horizontal inner direction, provided on the outer peripheral arcs on both sides of the lower part of the wound core;
A static induction machine. The static induction machine according to claim 1,
The resultant force of the reaction between the substantially horizontal stress applied to the inner circumferential arc portion on both upper sides and the lower circumferential arc portion on both sides of the wound core and the load acting in the vertical direction of the wound core is the arc of the wound core. A static induction machine characterized by facing the radial direction of the part. The static induction machine according to claim 1,
The means for supporting the load of the wound iron core while applying stress in the substantially horizontal outer direction provided on the inner circumferential arc part on both upper sides of the wound iron core is a rod shape having substantially the same radius of curvature as the inner circumferential arc part. A stationary induction device comprising a member and a member that applies stress to the rod-shaped member in a substantially horizontal outer direction. The static induction machine according to claim 3,
The static induction machine characterized by the load of the wound iron core concerning the said rod-shaped member being supported by members other than the said wound iron core. The static induction machine according to claim 3,
The member that applies stress to the rod-shaped member in a substantially horizontal outer direction is a first binding material that spans between the rod-shaped member and an arc portion of the wound iron core and applies a tightening pressure. Induction machine. The static induction machine of claim 5, further comprising:
A stationary induction electric machine comprising a second binding member that spans between the rod-shaped member and an arc portion at an upper part of the wound iron core and applies a tightening pressure in a substantially vertical upward direction. The static induction machine according to claim 1,
The means for supporting the load of the wound core while applying stress in the substantially horizontal inner direction provided at the outer circumferential arcs on both sides of the lower part of the wound core has a radius of curvature substantially the same as that of the outer circumferential arc of the lower part of the wound core. A stationary induction machine comprising: a receiving metal fitting having a member; and a member that applies stress to the receiving metal metal in a substantially horizontal inner direction. The static induction machine according to claim 7,
The members that apply stress to the receiving metal in the substantially horizontal inner direction are respectively in contact with the side surfaces of the two sets of receiving metal applied to the outer peripheral arc of the lower part of the wound iron core and apply stress in the substantially horizontal inner direction to each other. A static induction appliance characterized by being a metal fitting of 2. The static induction machine according to claim 7,
The member that applies stress in the substantially horizontal inward direction to the metal fitting is a rod-shaped member having a radius of curvature substantially the same as the inner circumferential arc portion on both lower sides of the wound core provided on the inner circumferential arc portion on both lower sides of the wound core. Members,
A stationary induction electric machine comprising a binding material that spans between the rod-shaped member and the receiving metal and applies a clamping pressure. The static induction machine according to claim 1,
The inner periphery of the wound iron core is provided with a rectangular metal fitting having a shape in which the corners on both upper sides protrude in an arc shape, and the radius of curvature of the arc protruding portion is substantially the same as the radius of curvature of the inner arc portion of the wound iron core. And applying a load of the wound iron core while applying stress to the rectangular metal fitting in a substantially horizontal outer direction. The static induction machine according to claim 10, wherein
A stationary induction device comprising a binding material that spans between the rectangular metal fitting and an arc portion of the wound iron core and applies a tightening pressure. The static induction appliance according to any one of claims 1 to 11,
A static induction electric machine having a single-phase configuration in which a winding is wound around a magnetic leg portion of a single wound iron core. The static induction appliance according to any one of claims 1 to 11,
It has a three-phase tripod configuration in which two inner winding cores are adjacent, one outer winding core is provided outside the inner winding core, and three-phase windings are wound around three magnetic leg portions. Static induction machine. The static induction appliance according to any one of claims 1 to 11,
A static induction electric appliance having a three-phase five-leg configuration in which four wound iron cores are arranged in parallel and three-phase windings are wound around three adjacent magnetic leg portions of the wound iron cores. The static induction machine according to any one of claims 1 to 14,
The wound iron core is a thin strip-like ultra-thin electrical steel sheet, an amorphous alloy, or a nanocrystalline alloy.

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