Magnet device based on bitter plate and reactor apparatus using the same

Abstract

The present disclosure relates to a biter plate-based magnet device and a reactor device using the same. The reactor device may include a magnet device. The magnet device may include an upper lead plate; a plurality of conductor plates; a plurality of insulator plates; and a lower lead plate. The magnet device may be formed to have a center hole. The conductor plates and the insulator plates may be stacked such that an insulator plate is disposed between each of the two conductor plates. The conductor plate may be formed to have a first radial slot, and the insulator plate may be formed to have a second radial slot having a width wider in the circumferential direction than the first radial slot. According to the present disclosure, by implementing a biter plate-based magnet device and a reactor device using the same, it is possible to achieve high current density in a low volume and also enable the fabrication of a miniaturized reactor.

Description

Technology Field

[0001] The present disclosure relates to a biter plate-based magnet device and a reactor device using the same. Background Technology

[0002] A reactor is a device that can be connected to a power system to provide inductive reactance. Depending on their function, reactors can be classified into series reactors, shunt reactors, and reactors for power converters. Reactors used in power systems typically have large volume and weight to achieve high reactance values, which has posed a significant burden in terms of installation and cost.

[0003] Accordingly, there is a need to develop a miniaturized reactor with a new structure capable of achieving high current density in a small volume. Prior art literature

[65535] Korean Patent Publication No. 10-2023-0054413 (2023.11.06.) The problem to be solved

[0004] The present disclosure aims to solve these problems by providing a biter plate-based magnet device and a reactor device using the same. means of solving the problem

[0005] According to one embodiment of the present disclosure, a biter plate-based magnet device may be provided. The magnet device may include an upper lead plate; a plurality of conductor plates; a plurality of insulator plates; and a lower lead plate. The magnet device may be formed to have a center hole. The conductor plates and the insulator plates may be stacked such that an insulator plate is disposed between each of the two conductor plates. Each conductor plate may be formed to have a first radial slot. Each insulator plate may be formed to have a second radial slot having a width in the circumferential direction wider than the first radial slot of the conductor plate. The conductor plates and the insulator plates may be stacked in such a manner that one conductor plate and one insulator plate are stacked such that a first radial direction slot is formed in the one conductor plate based on a first radial angle and a second radial direction slot is formed in the one insulator plate based on the first radial angle, so that one radial direction end of the first radial direction slot of the one conductor plate and one radial direction end of the second radial direction slot of the one insulator plate are aligned, and the next conductor plate and the next insulator plate are stacked such that a first radial direction slot is formed in the next conductor plate based on a second radial angle rotated by a predetermined angle from the first radial angle and a second radial direction slot is formed in the next insulator plate based on the second radial angle, so that one radial direction end of the first radial direction slot of the next conductor plate and one radial direction end of the second radial direction slot of the next insulator plate are aligned.

[0006] In addition, the upper lead plate and the lower lead plate may each be formed to have a contact portion for electrical connection protruding from an outer part.

[0007] Additionally, the magnet device may further include an upper insulator plate disposed between the upper lead plate and the uppermost conductor plate; and a lower insulator plate disposed between the lower lead plate and the lowermost conductor plate.

[0008] Additionally, the upper lead plate and the upper insulator plate may be stacked such that the first radial direction slot is formed in the upper lead plate based on a third radial angle and the second radial direction slot is formed in the upper insulator plate based on the third radial angle, so that one radial direction end of the first radial direction slot of the upper lead plate and one radial direction end of the second radial direction slot of the upper insulator plate are aligned. The uppermost conductor plate and the corresponding insulator plate may be stacked such that the first radial direction slot is formed in the uppermost conductor plate based on a fourth radial angle rotated by a predetermined angle from the third radial angle and the second radial direction slot is formed in the corresponding insulator plate based on the fourth radial angle, so that one radial direction end of the first radial direction slot of the uppermost conductor plate and one radial direction end of the second radial direction slot of the corresponding insulator plate are aligned.

[0009] Additionally, the lowest conductor plate and the corresponding insulator plate may be stacked such that the first radial direction slot is formed in the lowest conductor plate based on a fifth radial angle and the second radial direction slot is formed in the corresponding insulator plate based on the fifth radial angle, so that one radial direction end of the first radial direction slot of the lowest conductor plate and one radial direction end of the second radial direction slot of the corresponding insulator plate are aligned. The lower lead plate and the lower insulator plate may be stacked such that the first radial direction slot is formed in the lower lead plate based on a sixth radial angle rotated by a predetermined angle from the fifth radial angle and the second radial direction slot is formed in the lower insulator plate based on the sixth radial angle, so that one radial direction end of the first radial direction slot of the lower lead plate and one radial direction end of the second radial direction slot of the lower insulator plate are aligned.

[0010] In addition, a plurality of cooling holes may be formed on the edges of a virtual shape that is concentric and similar to the corresponding plate, larger than the center hole, and smaller than the corresponding plate. A plurality of such virtual shapes may be defined on the corresponding plate at predetermined intervals.

[0011] In addition, the plurality of cooling holes each have a circular shape, and some of the plurality of cooling holes formed on the border of the same virtual shape may be formed to be arranged at preset intervals.

[0012] In addition, a plurality of fixing holes for fixing the magnet device may be formed symmetrically with respect to the center hole in each of the conductor plates, the insulator plates, the upper lead plate, and the lower lead plate.

[0013] In addition, the conductor plate and the lead plate may be made of copper or a copper alloy.

[0014] According to one embodiment of the present disclosure, a reactor device may be provided. The reactor device may include a magnet device based on a beater plate.

[0015] According to one embodiment of the present disclosure, a three-phase reactor device may be provided. The three-phase reactor device may include a first magnet device; a second magnet device; and a third magnet device. The first magnet device, the second magnet device, and the third magnet device may each be formed to have a central hole through which a first leg, a second leg, and a third leg of a core can pass. Each of the first magnet device, the second magnet device, and the third magnet device may include an upper lead plate; a plurality of conductor plates; a plurality of insulator plates; and a lower lead plate. The conductor plates and the insulator plates may be stacked in such a manner that one conductor plate and one insulator plate are stacked such that a first radial direction slot is formed in the one conductor plate based on a first radial angle and a second radial direction slot is formed in the one insulator plate based on the first radial angle, so that one radial direction end of the first radial direction slot of the one conductor plate and one radial direction end of the second radial direction slot of the one insulator plate are aligned, and the next conductor plate and the next insulator plate are stacked such that a first radial direction slot is formed in the next conductor plate based on a second radial angle rotated by a predetermined angle from the first radial angle and a second radial direction slot is formed in the next insulator plate based on the second radial angle, so that one radial direction end of the first radial direction slot of the next conductor plate and one radial direction end of the second radial direction slot of the next insulator plate are aligned. Effects of the invention

[0016] According to the present disclosure, by implementing a biter plate-based magnet device and a reactor device using the same, it is possible to achieve high current density in a low volume and also enable the fabrication of a miniaturized reactor.

[0017] In addition, according to the present disclosure, a beater plate-based reactor device can be implemented that maintains a uniform current, enables efficient cooling, and reduces mechanical stress. Brief explanation of the drawing

[0018] FIG. 1 is a schematic drawing showing an exemplary magnet device according to one embodiment of the present disclosure. FIG. 2 is an exemplary drawing showing a stacked structure of a magnet device according to one embodiment of the present disclosure. FIG. 3 is an exemplary drawing showing a conductor plate according to one embodiment of the present disclosure. FIG. 4 is an exemplary drawing showing an insulator plate according to one embodiment of the present disclosure. FIG. 5 is an exemplary drawing showing a lead plate according to one embodiment of the present disclosure. FIG. 6 is an exemplary drawing showing the lamination of a conductor plate and an insulator plate according to one embodiment of the present disclosure. FIG. 7 is an exemplary drawing showing the shape of two conductor plates and an insulator plate between them that constitute the stacking exemplified in FIG. 6. FIG. 8 is an exemplary drawing showing the movement of current through a conductor plate and an insulator plate in a stacked structure exemplified in FIG. 6. FIG. 9 is an exemplary drawing showing a core structure according to one embodiment of the present disclosure. FIG. 10 is an exemplary drawing showing a three-phase reactor device composed of a magnet device and a core according to one embodiment of the present disclosure. Specific details for implementing the invention

[0019] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. First, it should be noted that in assigning reference numerals to the components of each drawing, the same components are given the same reference numeral whenever possible, even if they are shown in different drawings. Furthermore, in describing the present invention, if it is determined that a detailed description of related known components or functions could obscure the essence of the invention, such detailed description is omitted.

[0020] Various aspects of the present invention are described below. It should be understood that the inventions presented herein may be embodied in a wide variety of forms, and that any specific structure, function, or all thereof presented herein are merely illustrative. Based on the inventions presented herein, those skilled in the art will understand that any one aspect presented herein may be embodied independently of any other aspects, and that two or more such aspects may be combined in various ways. For example, an apparatus may be embodied or a method may be practiced using any number of aspects described herein. Furthermore, such an apparatus may be embodied or such a method may be practiced using structures, functions, or structures and functions other than those described herein, in addition to or other than these aspects.

[0021] A bitter plate (or bitter magnet) has been proposed as a novel magnet structure capable of generating high magnetic fields. A bitter plate can be constructed using stacked conductive plates and can achieve high current density in a small volume.

[0022] The present disclosure aims to provide a reactor device (100) utilizing such a beater plate-based magnet device (200) which can not only achieve high current density in a low volume but also enable the fabrication of a miniaturized reactor.

[0023] A biter plate-based magnet device (200) according to the present disclosure will be described in connection with FIGS. 1 to 8, and a reactor device (100) according to the present disclosure that may include a magnet device (200) and a core (300) will be described in connection with FIGS. 9 and 10.

[0024] FIG. 1 is a schematic drawing showing an exemplary magnet device according to one embodiment of the present disclosure.

[0025] As illustrated in FIG. 1, the magnet device (200) may be configured based on a beater plate and may be formed to have a central hole through which the core (300) can pass. In the example of FIG. 1, the central hole of the magnet device (200) is illustrated as a square shape with rounded corners, but is not limited thereto and may be implemented in other shapes (e.g., circular, polygonal, etc.) through which the core (300) can pass.

[0026] FIG. 2 is an exemplary drawing showing a stacked structure of a magnet device according to one embodiment of the present disclosure. FIG. 3 is an exemplary drawing showing a conductor plate according to one embodiment of the present disclosure. FIG. 4 is an exemplary drawing showing an insulator plate according to one embodiment of the present disclosure. FIG. 5 is an exemplary drawing showing a lead plate according to one embodiment of the present disclosure.

[0027] As illustrated in FIG. 2, the magnet device (200) may include an upper lead plate (230), a plurality of conductor plates (240-1, 240-2, ... 240-n), a plurality of insulator plates (250-1, 250-2, ... 250-n), and a lower lead plate (260). The conductor plates (240) and the insulator plates (250) may be stacked such that an insulator plate is placed between each of the two conductor plates. Additionally, an upper insulator plate (253) may be placed between the upper lead plate (230) and the uppermost conductor plate (240-1), and a lower insulator plate (257) may be placed between the lowermost conductor plate (240-n) and the lower lead plate (260). The stacked plates (230 to 260) may be formed to have a central hole through which a core (300) can pass. Additionally, these plates (230 to 260) may be formed as square plates with rounded corners as illustrated in FIGS. 2 to 5, but are not limited thereto and may be implemented in other shapes (e.g., circular, regular polygonal, etc.) capable of stacking and current transfer according to the present disclosure.

[0028] Additionally, each of the plates (230–260) may be formed to have a slot in the radial direction. Each conductor plate (240) and each lead plate (230, 260) may be formed to have a first radial slot (241) (Figs. 3 and 5). Each insulator plate (250) and upper and lower insulator plates (253, 257) may be formed to have a second radial slot (251) having a wider width in the circumferential direction than the first radial slot (241) of the conductor plate (240) (Fig. 4).

[0029] In one embodiment, the conductor plate (240) and the lead plates (230, 260) may be made of copper or a copper alloy, but are not limited thereto, and other conductive materials that satisfy the required conductivity, strength, etc. may be applied. In one embodiment, the conductor plate (240) may be formed to have a greater thickness than the insulator plate (250), and for example, the thickness of the conductor plate (240) may be 6 mm and the thickness of the insulator plate (250) may be 0.5 mm. Also, in one embodiment, the lead plates (230, 260) may be formed to have a greater thickness than the conductor plate (240), and for example, the thickness of the lead plates (230, 260) may be 8 mm.

[0030] Furthermore, the plates constituting the magnet device (200) may be stacked to have a stacked structure as shown in FIG. 2 for current movement through the plates. To this end, one radial end (245) (e.g., right end) of the first radial slot (241) of the conductor plate (240) and one radial end (255) (e.g., right end) of the second radial slot (251) of the insulator plate (250) may be stacked so as to be aligned (enlarged portion of FIG. 2).

[0031] Specifically, conductor plates (240) and insulator plates (250) are stacked such that one conductor plate (240) and one insulator plate (250) have a first radial direction slot (241) formed in one conductor plate (240) based on a first radial angle and a second radial direction slot (251) formed in one insulator plate (250) based on the same radial angle (i.e., the first radial angle), so that one radial direction end of the first radial direction slot (241) of one conductor plate (240) and one radial direction end of the second radial direction slot (251) of one insulator plate (250) are aligned, and the next conductor plate (240) and the next insulator plate (250) have a first radial direction slot (241) formed in the next conductor plate (240) based on a second radial angle rotated by a predetermined angle (e.g., 30 degrees, 45 degrees, etc.) from the first radial angle It can be stacked in such a way that a second radial direction slot (251) is formed (e.g., 241-2 in FIG. 7) and formed in the next insulator plate (250) based on the same radial angle (i.e., second radial angle), so that one radial direction end of the first radial direction slot (241) of the next conductor plate (240) and one radial direction end of the second radial direction slot (251) of the next insulator plate (250) are aligned.

[0032] In one embodiment, a first radial slot (241) may be formed in the upper lead plate (230) and the lower lead plate (260) as described above so that the upper lead plate (230) and the lower lead plate (260) can also serve as conductor plates (240) for current movement. In this case, as illustrated in FIG. 2, the stacking method of the conductor plates (240) and insulator plates (250) described above may be applied in the same way to the stacking of the upper lead plate (230) and the lower lead plate (260).

[0033] Specifically, the upper lead plate (230) and the upper insulator plate (253) can be stacked such that a first radial direction slot (241) is formed in the upper lead plate (230) based on a third radial angle and a second radial direction slot (251) is formed in the upper insulator plate (253) based on a third radial angle, so that one radial direction end of the first radial direction slot (241) of the upper lead plate (230) and one radial direction end of the second radial direction slot (251) of the upper insulator plate (253) are aligned. The top conductor plate (240-1) and the corresponding insulator plate (250-1) can be stacked such that a first radial direction slot (241) is formed in the top conductor plate (240-1) based on a fourth radial angle rotated by a predetermined angle from a third radial angle, and a second radial direction slot (251) is formed in the corresponding insulator plate (250-1) based on the fourth radial angle, so that one radial direction end of the first radial direction slot (241) of the top conductor plate (240-1) and one radial direction end of the second radial direction slot (251) of the corresponding insulator plate (250-1) are aligned.

[0034] Additionally, the lowest conductor plate (240-n) and the corresponding insulator plate (250-n) can be stacked such that a first radial direction slot (241) is formed in the lowest conductor plate (240-n) based on a fifth radial angle and a second radial direction slot (251) is formed in the corresponding insulator plate (250-n) based on a fifth radial angle, so that one radial direction end of the first radial direction slot (241) of the lowest conductor plate (240-n) and one radial direction end of the second radial direction slot (251) of the corresponding insulator plate (250-n) are aligned. The lower lead plate (260) and the lower insulator plate (257) can be stacked such that a first radial direction slot (241) is formed in the lower lead plate (260) based on a sixth radial angle rotated by a predetermined angle from a fifth radial angle, and a second radial direction slot (251) is formed in the lower insulator plate (257) based on the sixth radial angle, so that one radial direction end of the first radial direction slot (241) of the lower lead plate (260) and one radial direction end of the second radial direction slot (251) of the lower insulator plate (257) are aligned.

[0035] Through the stacking method described above, the upper lead plate (230), conductor plates (240-1, 240-2,... 240-n), insulator plates (250-1, 250-2,... 250-n) and lower lead plate (260) may have a stacked structure as shown in FIG. 2.

[0036] The upper lead plate (230) and the lower lead plate (260) may each be formed to have a contact portion (233) (i.e., an electrical terminal) for electrical connection protruding from an outer portion (Fig. 5). When current is applied to the magnet device (200) through the contact portion (233) of the upper lead plate (230) and the lower lead plate (260), as shown in Fig. 2, the current may flow from the lead plates (230, 260) to the upper / lower conductor plates (253, 257) and to each stacked conductor plate (240) by current movement through the plates.

[0037] In one embodiment, the magnet device (200) may be formed to have an effective cooling structure for maintaining the temperature of the magnet device (200) with low power. To this end, a plurality of cooling holes (410) may be formed on the edges of a virtual shape (411) that is concentric and similar to the plate, larger than the center hole, and smaller than the plate, on each of the conductor plates (240), insulator plates (250), upper lead plate (230), and lower lead plate (260) of the magnet device (200). Here, when a plurality of virtual shapes (411) are formed, a plurality of virtual shapes (411) (411-1, 411-2, 411-3) may be defined on the plate at predetermined intervals (Fig. 3).

[0038] Furthermore, the plurality of cooling holes (410) may each have a circular shape, and some of the plurality of cooling holes (410) formed on the edges of the same virtual shape (411-1, 411-2, 411-3) may be formed to be arranged at predetermined intervals. For example, if the plates and the virtual shape (411-1, 411-2, 411-3) are squares with rounded corners, the cooling holes (410) formed on the straight sections of each side of the virtual shape (411-1, 411-2, 411-3) may be arranged at predetermined intervals.

[0039] As shown in FIGS. 3 to 5, by configuring cooling holes (410) on the plates, current can be flowed uniformly in the magnet device (200), enabling efficient heat transfer and cooling, and reducing mechanical stress.

[0040] Additionally, in one embodiment, a plurality of fixing holes (430) for fixing the magnet device (200) may be formed symmetrically with respect to the center hole of the magnet device (200) in each of the conductor plates (240), insulator plates (250), upper lead plate (230), and lower lead plate (260). The plates (230–260) of the magnet device (200) may be firmly fixed and compressed through the fixing holes (430) using bolts / nuts or other coupling structures.

[0041] FIG. 6 is an exemplary drawing showing a stack of conductor plates and insulator plates according to one embodiment of the present disclosure. FIG. 7 is an exemplary drawing showing the shape of two conductor plates and an insulator plate constituting the stacking illustrated in FIG. 6. FIG. 8 is an exemplary drawing showing the movement of current through the conductor plates and insulator plates in the stacking structure illustrated in FIG. 6.

[0042] As illustrated in FIGS. 6 to 8, when current is applied to the magnet device (200), the current travels through one conductor plate (240-2) and is connected to the next conductor plate (240-1) through the second radial slot (251) of the corresponding insulator plate (250), and the current can travel through the next conductor plate (240-1). In this way, a magnetic field can be formed in the magnet device (200) as the current travels along each conductor plate (240) of the magnet device (200).

[0043] FIG. 9 is an exemplary drawing showing a core structure according to one embodiment of the present disclosure.

[0044] In one embodiment, when the reactor device (100) is implemented as a single phase, the reactor device (100) may be composed of one magnet device (200) and a core (300) (e.g., rod-shaped) (i.e., iron core).

[0045] In one embodiment, as illustrated in FIG. 9, when the reactor device (100) is implemented in three phases, the core (300) may have a rectangular structure and may be composed of legs (310-1, 310-2, 310-3) and an upper yoke (320) and a lower yoke (330) connecting each leg. Each magnet device (200-1, 200-2, 200-3) may be arranged so that each leg (310-1, 310-2, 310-3) penetrates a central hole.

[0046] The reactor device (100) according to the present disclosure can achieve high current density with a beater plate-based structure while being implemented with much smaller dimensions than existing products (e.g., coil-based power reactors). For example, the plates (230–260) constituting the magnet device (200) may have a width of 226 mm and may be implemented to have a center hole with a width of 74 mm. Additionally, for example, the width / depth and height of the leg (310) penetrating each magnet device (200) in the core (300) may be 65 mm and 180 mm, respectively, and the height and length of the yoke (320, 330) may be 65 mm and 595 mm, respectively.

[0047] A reactor device (100) implemented in three phases can be exemplified as in FIG. 10.

[0048] FIG. 10 is an exemplary drawing showing a three-phase reactor device composed of a magnet device and a core according to one embodiment of the present disclosure.

[0049] As illustrated in FIG. 10, the three-phase reactor device (100) may include a first magnet device (200-1), a second magnet device (200-2), a third magnet device (200-3), and a core (300). Each leg (310-1, 310-2, 310-3) of the core (300) may be configured to penetrate the center hole of each magnet device (200-1, 200-2, 200-3). Additionally, each magnet device (200-1, 200-2, 200-3) may be formed to have a stacked structure based on a beater plate as described above in relation to FIGS. 1 to 8.

[0050] A reactor device (100) utilizing a biter plate-based magnet device (200) according to the present disclosure is a miniaturized reactor having a high current density and can be applied to various devices such as a reactor for a power converter, a reactor for a vehicle, a reactor for a Flexible AC Transmission System (FACTS), a starting reactor, a shunt reactor, and a current limiting reactor.

[0051] In an additional embodiment, the magnet device (200) according to the present disclosure may be applied to a coreless air-core reactor device.

[0052] In addition, in an additional embodiment, a biter plate-based transformer device can be implemented by applying a magnet device (200) according to the present disclosure to each of the primary and secondary windings of the transformer.

[0053] The description of the presented embodiments is provided so that any person skilled in the art may use or practice the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be applied to other embodiments without departing from the scope of the present invention. Thus, the present invention is not limited to the embodiments presented herein, but should be interpreted in the broadest possible scope consistent with the principles and novel features presented herein. Explanation of the symbols

[0054] 100 : Reactor device 200 : Magnet device 230 : Upper lead plate 240 : Conductor plate 241: 1st Radial Slot 250 : Insulator plate 251: Second radial slot 260 : Lower lead plate 300 : Core 310: Leg 320: Upper yoke 330: Lower yoke

Claims

Claim 1 A biter plate-based magnet device comprising: an upper lead plate; a plurality of conductor plates; a plurality of insulator plates; The magnet device includes a lower lead plate, wherein the magnet device is formed to have a center hole, and the conductor plates and the insulator plates are stacked such that an insulator plate is disposed between each of the two conductor plates, and each conductor plate is formed to have a first radial slot, and each insulator plate is formed to have a second radial slot having a width wider in the circumferential direction than the first radial slot of the conductor plate, and the conductor plates and the insulator plates are stacked such that one conductor plate and one insulator plate have a first radial slot formed in the one conductor plate based on a first radial angle and a second radial slot formed in the one insulator plate based on the first radial angle, so that one radial end of the first radial slot of the one conductor plate and one radial end of the second radial slot of the one insulator plate are aligned, and the next conductor plate and the next insulator plate are the next conductor plate rotated by a predetermined angle from the first radial angle. A magnet device stacked in such a manner that a first radial direction slot is formed based on a second radiation angle and a second radial direction slot is formed based on the second radiation angle in the next insulator plate, and one radial direction end of the first radial direction slot of the next conductor plate and one radial direction end of the second radial direction slot of the next insulator plate are aligned. Claim 2 A magnet device according to claim 1, wherein the upper lead plate and the lower lead plate are each formed to have a contact portion for electrical connection protruding from an outer portion. Claim 3 A magnet device according to claim 1, further comprising: an upper insulator plate disposed between the upper lead plate and the uppermost conductor plate; and a lower insulator plate disposed between the lower lead plate and the lowermost conductor plate. Claim 4 In claim 3, the upper lead plate and the upper insulator plate are stacked such that the first radial direction slot is formed in the upper lead plate based on a third radial angle and the second radial direction slot is formed in the upper insulator plate based on the third radial angle, so that one radial direction end of the first radial direction slot of the upper lead plate and one radial direction end of the second radial direction slot of the upper insulator plate are aligned, and the uppermost conductor plate and the corresponding insulator plate are stacked such that the first radial direction slot is formed in the uppermost conductor plate based on a fourth radial angle rotated by a predetermined angle from the third radial angle and the second radial direction slot is formed in the corresponding insulator plate based on the fourth radial angle, so that one radial direction end of the first radial direction slot of the uppermost conductor plate and one radial direction end of the second radial direction slot of the corresponding insulator plate are aligned. Claim 5 In claim 3, the lower conductor plate and the corresponding insulator plate are stacked such that the first radial direction slot is formed in the lower conductor plate based on a fifth radial angle and the second radial direction slot is formed in the corresponding insulator plate based on the fifth radial angle, so that one radial direction end of the first radial direction slot of the lower conductor plate and one radial direction end of the second radial direction slot of the corresponding insulator plate are aligned, and the lower lead plate and the lower insulator plate are stacked such that the first radial direction slot is formed in the lower lead plate based on a sixth radial angle rotated by a predetermined angle from the fifth radial angle and the second radial direction slot is formed in the lower insulator plate based on the sixth radial angle, so that one radial direction end of the first radial direction slot of the lower lead plate and one radial direction end of the second radial direction slot of the lower insulator plate are aligned. Claim 6 A magnet device according to claim 1, wherein each of the conductor plates, the insulator plates, the upper lead plate, and the lower lead plate has a plurality of cooling holes formed on the edge of a virtual shape that is concentric and similar to the plate, larger than the center hole, and smaller than the plate, and wherein a plurality of virtual shapes are defined on the plate at predetermined intervals. Claim 7 A magnet device according to claim 6, wherein the plurality of cooling holes each have a circular shape, and some of the plurality of cooling holes formed on the border of the same virtual figure are formed to be arranged at preset intervals. Claim 8 A magnet device according to claim 1, wherein each of the conductor plates, the insulator plates, the upper lead plate, and the lower lead plate has a plurality of fixing holes formed symmetrically with respect to the center hole for fixing the magnet device. Claim 9 A magnet device according to claim 1, wherein the conductor plate and the lead plate are made of copper or a copper alloy. Claim 10 A reactor device comprising a magnet device according to any one of claims 1 to 9. Claim 11 A three-phase reactor device comprising a first magnet device; a second magnet device; and a third magnet device, wherein the first magnet device, the second magnet device, and the third magnet device are each formed to have a central hole through which a first leg, a second leg, and a third leg of a core can pass, and each of the first magnet device, the second magnet device, and the third magnet device comprises an upper lead plate; a plurality of conductor plates; and a plurality of insulator plates.The conductor plates and the insulator plates are stacked such that an insulator plate is disposed between each of the two conductor plates, each conductor plate is formed to have a first radial slot, and each insulator plate is formed to have a second radial slot having a width wider in the circumferential direction than the first radial slot of the conductor plate, and the conductor plates and the insulator plates are stacked such that one conductor plate and one insulator plate have a first radial slot formed in the one conductor plate based on a first radial angle and a second radial slot formed in the one insulator plate based on the first radial angle, so that one radial end of the first radial slot of the one conductor plate and one radial end of the second radial slot of the one insulator plate are aligned, and the next conductor plate and the next insulator plate have a first radial slot formed in the next conductor plate based on a second radial angle rotated by a predetermined angle from the first radial angle. A three-phase reactor device stacked in such a manner that a second radial direction slot is formed in the next insulator plate based on the second radial angle, and one radial direction end of the first radial direction slot of the next conductor plate and one radial direction end of the second radial direction slot of the next insulator plate are aligned.

Images